{"title":"Thermopompe Multi Zone SENVILLE | Installation à Montréal, Laval, Longueuil, Rive Sud et Rive Nord","description":null,"products":[{"product_id":"thermopompe-2-zones-senville-r454b-18000-btu","title":"SENVILLE R454B 2-Zone Heat Pump | 18000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTwo zones, two 9,000 BTU indoor units, and a single condenser: a particularly interesting configuration for Quebec's climate\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 2-Zone Heat Pump | 18,000 BTU\u003c\/strong\u003e addresses a need we regularly encounter at AirGreen: heating and cooling two separate spaces without installing two condensers on the façade, balcony, or side of the house. For properties in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e, this configuration can be particularly relevant when a single wall-mounted unit cannot properly distribute air to two bedrooms, two floors, or two separate zones.\u003c\/p\u003e\n\u003cp\u003eThe configuration presented here is based on the \u003cstrong\u003eSENA-18HF-MOA\u003c\/strong\u003e condenser, paired in the dual-zone product with \u003cstrong\u003etwo indoor units of 9,000 BTU each\u003c\/strong\u003e. The Senville brochure confirms the 9,000 + 9,000 BTU combination, as well as the inclusion of two 16 ft. installation kits in the configuration shown. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical reference to remember is \u003cstrong\u003eAHRI 215735311\u003c\/strong\u003e. This heat pump operates with \u003cstrong\u003eR454B\u003c\/strong\u003e, is designed for \u003cstrong\u003eheating down to -30 °C\u003c\/strong\u003e, offers \u003cstrong\u003e25 SEER2\u003c\/strong\u003e efficiency, is \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certified, and belongs to the category of systems suited to cold climates.\u003c\/p\u003e\n\u003cp\u003eOn paper, these figures are already impressive. In practice, it is primarily the distribution of capacity between the two zones, the length of the lines, the positioning of the indoor units, and the heat load of each room that determine whether the system will actually be comfortable.\u003c\/p\u003e\n\u003ch3\u003eWhat the 2-zone configuration actually includes\u003c\/h3\u003e\n\u003cp\u003ePage 4 of the brochure specifies that the package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 indoor units of 9,000 BTU each\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 outdoor unit\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethe wireless remote controls;\u003c\/li\u003e\n\u003cli\u003ea USB Wi-Fi kit;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 16 ft. installation kits\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethe wiring between the units;\u003c\/li\u003e\n\u003cli\u003ethe installation manual. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is therefore indeed a \u003cstrong\u003eDual-Zone 9,000 + 9,000 BTU system\u003c\/strong\u003e, even though the SENA-18HF-MOA outdoor platform is listed in the technical documentation as compatible with \u003cstrong\u003e2 to 3 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis distinction is important when comparing products online. The fact that a condenser can accommodate different configurations does not mean that the product sold here includes three indoor units. The configuration we are interested in consists of \u003cstrong\u003etwo wall-mounted units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e18,000 BTU in the name, but 19,000 BTU of cooling capacity in the technical specifications\u003c\/h3\u003e\n\u003cp\u003eThe commercial nomenclature refers to an \u003cstrong\u003e18,000 BTU\u003c\/strong\u003e system, but Senville states in its technical documentation:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003erated cooling capacity: 19,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling range: \u003cstrong\u003e5,400 to 28,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003enominal heating capacity: \u003cstrong\u003e20,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating range: \u003cstrong\u003e5,700 to 27,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis detail is particularly revealing of Inverter technology.\u003c\/p\u003e\n\u003cp\u003eA multizone system does not constantly produce exactly 9,000 BTU at each head. The condenser modulates its capacity and distributes it according to the zones’ active demands.\u003c\/p\u003e\n\u003cp\u003eIf one room requires substantial heating while the other is already at temperature, the compressor load is not necessarily divided into exactly two equal shares.\u003c\/p\u003e\n\u003cp\u003eThis is precisely what makes the design of a \u003cstrong\u003e2-zone heat pump\u003c\/strong\u003e more interesting than a simple “9,000 + 9,000 = 18,000” calculation.\u003c\/p\u003e\n\u003ch3\u003eA very wide modulation range for two rooms with different needs\u003c\/h3\u003e\n\u003cp\u003eThe published heating range, from \u003cstrong\u003e5,700 to 27,000 BTU\/h\u003c\/strong\u003e, gives the compressor considerable leeway to adjust its output. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLet’s take a typical example in a duplex in \u003cstrong\u003eMontreal\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA 9,000 BTU head is installed in the ground-floor living room, which has several windows and an exterior door. The second is installed in a large bedroom upstairs.\u003c\/p\u003e\n\u003cp\u003eOn an autumn day, the bedroom may require very little heat while the living room receives more cold air when the door is opened. The Inverter system can adjust its operation instead of constantly producing its maximum capacity.\u003c\/p\u003e\n\u003cp\u003eThis modulation generally makes it possible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eto limit unnecessary on-off cycles;\u003c\/li\u003e\n\u003cli\u003eto maintain more stable temperatures;\u003c\/li\u003e\n\u003cli\u003eto operate longer at low capacity;\u003c\/li\u003e\n\u003cli\u003eto reduce noise fluctuations;\u003c\/li\u003e\n\u003cli\u003eto better match output to two different thermal loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNevertheless, it is important to keep in mind that the two indoor units share the \u003cstrong\u003esame condenser\u003c\/strong\u003e. A multizone heat pump should therefore not be considered two completely independent systems capable of simultaneously handling any conflicting heating and cooling demand.\u003c\/p\u003e\n\u003cp\u003eEach zone can have its own setpoint temperature and airflow, but the system remains a shared system overall.\u003c\/p\u003e\n\u003ch3\u003e25 SEER2 and 15 EER2: particularly high efficiency for a multi-split system\u003c\/h3\u003e\n\u003cp\u003eSENVILLE lists:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 25.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 15.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region IV: 10.4\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region V: 8.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal COP: 4.0\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe figure of 25 should be interpreted as a \u003cstrong\u003eSEER2\u003c\/strong\u003e, which is the value published in the current brochure.\u003c\/p\u003e\n\u003cp\u003eFor an 18,000 BTU multizone heat pump, this efficiency level is one of the model’s main selling points. Senville also presents the system as ENERGY STAR certified and claims reduced consumption compared with less efficient systems. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, however, we avoid directly converting a SEER2 rating into a dollar amount saved.\u003c\/p\u003e\n\u003cp\u003eA highly efficient heat pump installed in a poorly insulated building may consume more than a less efficient heat pump installed in a property with a low heat load.\u003c\/p\u003e\n\u003cp\u003eActual performance also depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe requested temperature;\u003c\/li\u003e\n\u003cli\u003ethe level of insulation;\u003c\/li\u003e\n\u003cli\u003ewindows;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003ethe number of operating hours;\u003c\/li\u003e\n\u003cli\u003ethe load of each of the two zones;\u003c\/li\u003e\n\u003cli\u003esizing;\u003c\/li\u003e\n\u003cli\u003eand the quality of the refrigeration installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA true cold-climate heat pump down to -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a minimum outdoor heating temperature of \u003cstrong\u003e-30 °C\u003c\/strong\u003e, or -22 °F. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product sheet associated with pairing \u003cstrong\u003eAHRI 215735311\u003c\/strong\u003e provides particularly useful capacities for understanding what this represents during a Montreal winter:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20,000 BTU\/h at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19,000 BTU\/h at -15 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e10,000 BTU\/h at -30 °C\u003c\/strong\u003e under the maximum published condition;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOP of approximately 2.53 at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOP of approximately 1.3 at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese values show why the simple statement “operates at -30 °C” is insufficient for comparing heat pumps.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the unit can still operate, but its available capacity is lower than at -8 °C.\u003c\/p\u003e\n\u003cp\u003eTo determine whether electric baseboard heaters or another supplemental heat source will be necessary, we must compare this capacity with the building’s \u003cstrong\u003eheat loss\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn a very well-insulated condo in \u003cstrong\u003eLaval\u003c\/strong\u003e, 10,000 BTU\/h at very low temperatures can represent a significant contribution. In an old Montreal duplex with substantial air leaks, the requirements may be much higher.\u003c\/p\u003e\n\u003ch3\u003eCapacity almost maintained at -15 °C\u003c\/h3\u003e\n\u003cp\u003eThe drop from \u003cstrong\u003e20,000 BTU\/h at -8 °C\u003c\/strong\u003e to approximately \u003cstrong\u003e19,000 BTU\/h at -15 °C\u003c\/strong\u003e deserves particular attention.\u003c\/p\u003e\n\u003cp\u003eThis means that the heat pump maintains substantial heating capacity across a temperature range that is very common in Quebec.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner who wants to reduce the use of electric baseboard heaters, capacity at moderate winter temperatures is often more important than performance at an extreme temperature reached only during certain periods.\u003c\/p\u003e\n\u003cp\u003eThis is exactly the type of data we use at AirGreen to compare two models that both display “-30 °C” on their marketing specifications.\u003c\/p\u003e\n\u003ch3\u003eWhy two 9,000 BTU heads can be more effective than a single large unit\u003c\/h3\u003e\n\u003cp\u003eOne of the most common scenarios involves two physically separate spaces.\u003c\/p\u003e\n\u003cp\u003eImagine a floor consisting of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large primary bedroom;\u003c\/li\u003e\n\u003cli\u003ean office or a second bedroom on the other side of the corridor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA single 18,000 BTU heat pump in the hallway might have sufficient total capacity, but that does not guarantee that the air will reach both rooms properly, especially when the doors are closed.\u003c\/p\u003e\n\u003cp\u003eWith two 9,000 BTU units, each space receives its own direct airflow.\u003c\/p\u003e\n\u003cp\u003eThis allows us to distribute air more precisely without needing two outdoor condensers.\u003c\/p\u003e\n\u003ch3\u003eOne condenser: a concrete advantage in dense neighborhoods\u003c\/h3\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal\u003c\/strong\u003e, the number of outdoor units is not just an aesthetic issue.\u003c\/p\u003e\n\u003cp\u003eIn plexes and closely spaced homes, we often have to work around:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003enarrow side passages;\u003c\/li\u003e\n\u003cli\u003ebalconies;\u003c\/li\u003e\n\u003cli\u003ebrick walls;\u003c\/li\u003e\n\u003cli\u003eclosely spaced windows;\u003c\/li\u003e\n\u003cli\u003eproperty-line limitations;\u003c\/li\u003e\n\u003cli\u003emunicipal restrictions;\u003c\/li\u003e\n\u003cli\u003eareas where noise must be controlled;\u003c\/li\u003e\n\u003cli\u003every little space for the piping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe recently completed a DoubleZone installation in \u003cstrong\u003eVilleray–Saint-Michel–Parc-Extension\u003c\/strong\u003e on a brick Montreal building where the available space, windows, and piping route required particularly precise planning. Although this project involved another brand, the design logic is exactly what we apply to Senville systems: \u003cstrong\u003etwo indoor zones while limiting the outdoor installation to a single condenser\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is often what makes a Dual Zone heat pump more appealing in an urban environment.\u003c\/p\u003e\n\u003ch2\u003eWhat we check at AirGreen before installing an SENVILLE 2-Zone 18,000 BTU\u003c\/h2\u003e\n\u003ch3\u003eTwo 9,000 BTU units do not mean that every room is suitable for 9,000 BTU\u003c\/h3\u003e\n\u003cp\u003eWe assess each zone separately.\u003c\/p\u003e\n\u003cp\u003eA 250 sq. ft. room with full southern exposure and a large picture window may have a greater load than a 400 sq. ft. room facing north and surrounded by heated rooms.\u003c\/p\u003e\n\u003cp\u003eWe specifically check:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003efloor area;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ewindows;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003eexterior-facing walls;\u003c\/li\u003e\n\u003cli\u003eair infiltration;\u003c\/li\u003e\n\u003cli\u003ehow the room is used;\u003c\/li\u003e\n\u003cli\u003ecommunication with the other spaces.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe brochure suggests this range for applications covering approximately \u003cstrong\u003e750 to 1,250 sq. ft.\u003c\/strong\u003e, but this figure refers to a general scenario, not a guarantee for every property. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA 1,000 sq. ft. home with two large open areas can be an excellent candidate. A home of the same size with five enclosed rooms may require a different configuration.\u003c\/p\u003e\n\u003ch3\u003eThe published 2,131 CFM is not the airflow of the two indoor units\u003c\/h3\u003e\n\u003cp\u003eThe technical sheet mentions \u003cstrong\u003e2,130.7 CFM\u003c\/strong\u003e. It is important to read the table carefully: this value corresponds to the \u003cstrong\u003emaximum airflow of the outdoor unit\u003c\/strong\u003e, not the airflow delivered into the rooms by the two wall-mounted evaporators. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is an important detail because an isolated figure of “CFM 2,131” on a commercial specification sheet can easily be misinterpreted.\u003c\/p\u003e\n\u003cp\u003eComfort in both rooms depends on the airflow of each 9,000 BTU indoor unit, its fan speed, and above all its orientation.\u003c\/p\u003e\n\u003ch3\u003ePositioning the two units is more complex than with a single-split system.\u003c\/h3\u003e\n\u003cp\u003eOn a Dual Zone system, we seek to achieve good air distribution in \u003cstrong\u003etwo different spaces while maintaining a logical outdoor installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWe therefore need to find a compromise between:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe best position for the first unit;\u003c\/li\u003e\n\u003cli\u003ethe best position for the second one;\u003c\/li\u003e\n\u003cli\u003ethe total length of the lines;\u003c\/li\u003e\n\u003cli\u003eease of drainage;\u003c\/li\u003e\n\u003cli\u003ethe appearance of the line covers;\u003c\/li\u003e\n\u003cli\u003eaccess to the condenser;\u003c\/li\u003e\n\u003cli\u003ethe building’s drilling options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA poor decision at the outset may save a few feet of piping while compromising comfort for the next ten years.\u003c\/p\u003e\n\u003cp\u003eWe therefore prioritize air distribution over ease of installation.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in – 3\/8 in piping: each branch must be properly prepared\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003e1\/4 in – 3\/8 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eThe system contains two refrigerant circuits running from the condenser to the indoor units. This means more connections than with a single-zone installation and, consequently, more points where workmanship quality matters.\u003c\/p\u003e\n\u003cp\u003eWe pay particular attention to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eflaring;\u003c\/li\u003e\n\u003cli\u003etightening;\u003c\/li\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ebend radii;\u003c\/li\u003e\n\u003cli\u003ebranch lengths;\u003c\/li\u003e\n\u003cli\u003eleak tightness;\u003c\/li\u003e\n\u003cli\u003evacuum evacuation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn a multizone system, a problem on a single branch can affect the operation of one zone and complicate troubleshooting.\u003c\/p\u003e\n\u003ch3\u003eR454B and a precharge covering up to 75 ft\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies a charge of \u003cstrong\u003e78.31 oz of R454B\u003c\/strong\u003e and a precharge advertised for up to \u003cstrong\u003e75 ft\u003c\/strong\u003e of piping. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis feature is particularly practical on a Dual Zone system because the two indoor units can be located in different areas of the building.\u003c\/p\u003e\n\u003cp\u003eHowever, the “75 ft” specification does not mean that we can improvise two routes of any length. The total limits, the lengths of each branch, and the height differences must comply with the manufacturer’s requirements.\u003c\/p\u003e\n\u003cp\u003eThe configuration sold in the brochure also includes \u003cstrong\u003etwo 16 ft assemblies\u003c\/strong\u003e, meaning an initial physical length well below the system’s maximum precharge capacity. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eR454B: professional installation is particularly important\u003c\/h3\u003e\n\u003cp\u003eR454B belongs to the A2L refrigerant category.\u003c\/p\u003e\n\u003cp\u003eThe brochure specifically highlights a \u003cstrong\u003eleak detection and diagnostic system\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor our HVAC work, this means using methods and equipment compatible with the refrigerant installed.\u003c\/p\u003e\n\u003cp\u003eA professional installation involves much more than mounting the units:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eline-set preparation;\u003c\/li\u003e\n\u003cli\u003eleak testing;\u003c\/li\u003e\n\u003cli\u003evacuuming;\u003c\/li\u003e\n\u003cli\u003eelectrical connections;\u003c\/li\u003e\n\u003cli\u003edrain management;\u003c\/li\u003e\n\u003cli\u003ecommissioning;\u003c\/li\u003e\n\u003cli\u003etesting of both zones;\u003c\/li\u003e\n\u003cli\u003everification of communication between the units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is also a requirement specified by Senville to maintain the warranty conditions. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eElectrical circuit: 17.5 A MCA and 20 A maximum protection\u003c\/h3\u003e\n\u003cp\u003eThe official brochure states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003epower supply: \u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003evoltage range: 187 to 253 V;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eminimum circuit ampacity: 17.5 A\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emaximum protection: 20 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe AirGreen listing rounds the MCA to \u003cstrong\u003e18 A\u003c\/strong\u003e, but the detailed manufacturer data is 17.5 A.\u003c\/p\u003e\n\u003cp\u003eWe always check the nameplate and applicable documentation at the time of installation before finalizing the electrical circuit.\u003c\/p\u003e\n\u003ch3\u003eA 137 lb condenser: the outdoor support must be designed for winter\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 in × 16.14 in × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs approximately \u003cstrong\u003e137.35 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIts published outdoor sound level is \u003cstrong\u003e61.5 dB(A)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal, Laval, Longueuil, or on the South Shore\u003c\/strong\u003e, we think about winter from the day of installation.\u003c\/p\u003e\n\u003cp\u003eThe condenser must be positioned to limit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow accumulation;\u003c\/li\u003e\n\u003cli\u003eice from a roof;\u003c\/li\u003e\n\u003cli\u003evibrations;\u003c\/li\u003e\n\u003cli\u003eobstructions;\u003c\/li\u003e\n\u003cli\u003edefrosting difficulties;\u003c\/li\u003e\n\u003cli\u003eaccess problems during a service call.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn a two-zone system where a single condenser serves two rooms, its location deserves even more attention: an outdoor failure or obstruction affects both zones.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included: convenient when there are two zones\u003c\/h3\u003e\n\u003cp\u003eThe system includes a \u003cstrong\u003eUSB Wi-Fi kit\u003c\/strong\u003e and remote control through an app. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a Dual Zone system, this feature is especially useful.\u003c\/p\u003e\n\u003cp\u003eThe owner can adjust the temperatures in different rooms, create schedules, and manage the system without having to go find each remote control.\u003c\/p\u003e\n\u003cp\u003eIn a residence where one zone serves as an office during the day and the other as a bedroom at night, the schedules allow usage to be adapted to the occupants’ actual routine.\u003c\/p\u003e\n\u003ch3\u003eLogisVert subsidy: why the AirGreen listing says $2,400\u003c\/h3\u003e\n\u003cp\u003eThe heating capacity listed for this Senville is \u003cstrong\u003e20,000 BTU\/h at -8 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec currently provides assistance of \u003cstrong\u003e$120 per 1,000 BTU\/h at -8 °C\u003c\/strong\u003e for an ENERGY STAR–certified cold-climate heat pump, subject to compliance with all program conditions. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculation is therefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20 × $120 = $2,400\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis corresponds exactly to the \u003cstrong\u003e$2,400 LogisVert grant\u003c\/strong\u003e displayed for the model.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec also specifies that the amount is determined according to the \u003cstrong\u003einstallation date\u003c\/strong\u003e, which means that the assistance must always be verified when the project is carried out. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eAnd in some multi-unit residential buildings?\u003c\/h3\u003e\n\u003cp\u003eSince June 15, 2026, certain eligible multi-unit residential buildings may benefit from an enhancement that increases the assistance to \u003cstrong\u003e$220 per 1,000 BTU\/h at -8 °C\u003c\/strong\u003e for an ENERGY STAR cold-climate wall-mounted heat pump, when all program criteria are met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith a capacity of 20,000 BTU\/h at -8 °C, this would theoretically represent:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20 × $220 = $4,400\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis enhanced assistance is not automatic. The requirements include, in particular, the type of building and its eligibility for the multi-unit residential component.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore verify the program applicable to the address rather than presenting an amount as guaranteed.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference between the AirGreen product sheet and the brochure should be clarified\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet provided for this model indicates a warranty \u003cstrong\u003e10-10-0\u003c\/strong\u003e, namely ten years on the compressor, ten years on parts, and no manufacturer labor coverage, with the possibility of additional warranty coverage.\u003c\/p\u003e\n\u003cp\u003eThe attached Senville brochure indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese two pieces of information are therefore not identical.\u003c\/p\u003e\n\u003cp\u003eThe coverage actually offered on an AirGreen installation must be confirmed on the \u003cstrong\u003efinal quote\u003c\/strong\u003e, according to the applicable program, product registration, and any additional protections included or purchased.\u003c\/p\u003e\n\u003cp\u003eWe consider this verification important, particularly when a customer compares two quotes solely based on the number of years displayed on a website.\u003c\/p\u003e\n\u003ch3\u003eThe most common mistakes to avoid with a 2-zone heat pump\u003c\/h3\u003e\n\u003ch4\u003eChoosing two identical heads simply because the total is 18,000 BTU\u003c\/h4\u003e\n\u003cp\u003eTwo rooms can have very different needs. The 9,000 + 9,000 combination should match the actual loads.\u003c\/p\u003e\n\u003ch4\u003ePositioning the units according to the shortest piping route\u003c\/h4\u003e\n\u003cp\u003eAn installation can be mechanically very clean while still blowing in the wrong direction. Comfort must remain the priority.\u003c\/p\u003e\n\u003ch4\u003eConfusing two zones with two independent systems\u003c\/h4\u003e\n\u003cp\u003eThe two units share a condenser and a common available capacity.\u003c\/p\u003e\n\u003ch4\u003eNeglecting the total length of the lines\u003c\/h4\u003e\n\u003cp\u003eA multi-split system requires more rigorous management of line lengths, elevation differences, and refrigerant charge.\u003c\/p\u003e\n\u003ch4\u003eInstall the condenser too close to the ground\u003c\/h4\u003e\n\u003cp\u003eA system advertised for temperatures down to -30 °C must be able to breathe when it snows. The outdoor installation must be adapted to Quebec’s climate.\u003c\/p\u003e\n\u003ch4\u003eComparing price alone\u003c\/h4\u003e\n\u003cp\u003eTwo quotes for “an 18,000 BTU Dual-Zone heat pump” can conceal significant differences: exact models, efficiency, capacity at -15 °C, warranty, brackets, electrical work, line length, and quality of commissioning.\u003c\/p\u003e\n\u003ch3\u003eWho do we primarily recommend this SENVILLE 2-Zone system to?\u003c\/h3\u003e\n\u003cp\u003eWe consider this configuration particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etwo bedrooms located in different areas;\u003c\/li\u003e\n\u003cli\u003ea ground floor and an enclosed room that does not receive enough air;\u003c\/li\u003e\n\u003cli\u003ean office and a bedroom;\u003c\/li\u003e\n\u003cli\u003ea small duplex or apartment where two zones need to be treated separately;\u003c\/li\u003e\n\u003cli\u003ea home where the available outdoor space does not allow for two outdoor units;\u003c\/li\u003e\n\u003cli\u003ea homeowner who wants to benefit from an \u003cstrong\u003eENERGY STAR cold-climate\u003c\/strong\u003e system down to -30 °C;\u003c\/li\u003e\n\u003cli\u003ea property where the LogisVert rebate significantly improves the project’s cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe would be more cautious if one of the two zones had a very high heating load or if several other enclosed rooms also needed to be heated and cooled.\u003c\/p\u003e\n\u003ch3\u003eWhy entrust a Dual-Zone installation to AirGreen?\u003c\/h3\u003e\n\u003cp\u003eA multi-split heat pump requires more planning than a single-split system.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we must consider the \u003cstrong\u003etwo indoor units\u003c\/strong\u003e, their drains, the two piping routes, the shared outdoor unit, the electrical circuit, and how the two zones behave when needs change.\u003c\/p\u003e\n\u003cp\u003eWe carry out this type of \u003cstrong\u003eHVAC installation in Montreal, Laval, Longueuil, on the South Shore, the North Shore, and in Montérégie\u003c\/strong\u003e, in single-family homes as well as in plexes and condos where physical constraints are much tighter.\u003c\/p\u003e\n\u003cp\u003eOur goal is not simply to manage to fit two 9,000 BTU units in the building. We want their location, capacity, and operation to truly match the two spaces the customer wants to control.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for the SENVILLE 2-Zone 18,000 BTU R454B\u003c\/h3\u003e\n\u003cp\u003eFor an \u003cstrong\u003eSENVILLE R454B 18,000 BTU 2-Zone Heat Pump\u003c\/strong\u003e in \u003cstrong\u003eMontreal, Laval, Longueuil, on the South Shore or the North Shore\u003c\/strong\u003e, contact AirGreen.\u003c\/p\u003e\n\u003cp\u003eWe can assess the load of each room, confirm the \u003cstrong\u003e9,000 + 9,000 BTU\u003c\/strong\u003e configuration, plan the routing of the two refrigerant lines, validate the electrical installation, and check eligibility for the \u003cstrong\u003e$2,400 LogisVert rebate\u003c\/strong\u003e under the current conditions.\u003c\/p\u003e\n\u003cp\u003eWith a Dual-Zone heat pump, the quality of the result depends just as much on choosing the two locations as on the performance listed on the technical data sheet.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"6 + 6","offer_id":56200888844580,"sku":"SENA-18HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"6 + 12","offer_id":56200888877348,"sku":"SENA-18HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9","offer_id":56200888910116,"sku":"SENA-18HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 12","offer_id":56200888942884,"sku":"SENA-18HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 12","offer_id":56200888975652,"sku":"SENA-18HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_2_ZONES_SENVILLE_R454B_18000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057698"},{"product_id":"thermopompe-2-zones-senville-r454b-27000-btu","title":"SENVILLE R454B 2-Zone Heat Pump | 27000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTwo zones, one outdoor unit: why this SENVILLE is particularly interesting for Quebec homes that are difficult to cool with a single head\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA multistory house, a condo with a living area separate from the bedrooms, or a bungalow whose living room and basement require different temperatures presents a problem we regularly encounter at AirGreen: \u003cstrong\u003ea single wall-mounted heat pump may have enough BTUs but be unable to distribute the air properly everywhere comfort is needed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is precisely where a \u003cstrong\u003eSENVILLE R454B two-zone heat pump\u003c\/strong\u003e, based on the \u003cstrong\u003eSENA-28HF-MOA\u003c\/strong\u003e outdoor unit, becomes relevant. Rather than installing two independent compressors on the exterior wall, we can connect several indoor units to a single outdoor unit and create two distinct comfort zones.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product sheet presents this configuration as a \u003cstrong\u003e27,000-BTU two-zone heat pump\u003c\/strong\u003e, while Senville documentation identifies the SENA-28HF-MOA outdoor unit as a nominal \u003cstrong\u003e28,000-BTU\u003c\/strong\u003e platform that can serve two to four zones, depending on the selected combination. The brochure confirms a nominal cooling capacity of 28,000 BTUs and a modulation range of approximately 9,838 to 30,438 BTU\/h. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the homeowner, this small nomenclature discrepancy does not change the essentials: before purchasing, what must be verified is \u003cstrong\u003ethe exact combination of indoor units, the corresponding AHRI reference, and the certified capacity of that combination\u003c\/strong\u003e, not just the commercial name shown on the box.\u003c\/p\u003e\n\u003cp\u003eFor the configuration published by AirGreen, the important data includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-28HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI reference: 215735314\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePublished cooling capacity: 27,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold-climate certification: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR number: 3630061\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER: 12.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF: 10.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 61 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 2,130 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor dimensions: 37.24 × 16.14 × 31.89 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePiping: 1\/4 in – 3\/8 in for applicable connections\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eProvincial rebate indicated on the AirGreen product sheet: $3,600\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTwo zones do not simply mean “two times 13,500 BTUs”\u003c\/h3\u003e\n\u003cp\u003eThis is probably the most important point to understand about a multi-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003etwo-zone heat pump\u003c\/strong\u003e does not necessarily divide its 27,000 or 28,000 BTUs into two fixed and equal portions.\u003c\/p\u003e\n\u003cp\u003eThe inverter compressor adjusts its output according to the simultaneous demand from the indoor units. If one zone has a high heating demand while the second is nearly satisfied, a larger portion of the available capacity can be directed to the active zone, within the limits of the operating conditions and the installed combination.\u003c\/p\u003e\n\u003cp\u003eThe Senville brochure confirms a heating range of \u003cstrong\u003e8,218 to 31,000 BTU\/h\u003c\/strong\u003e, with an advertised nominal capacity of 28,000 BTU. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation explains why a multi-zone system must be designed according to the \u003cstrong\u003eroom loads\u003c\/strong\u003e, rather than simply adding the numbers listed on the indoor units.\u003c\/p\u003e\n\u003cp\u003eA combination including, for example, two 12,000 BTU units does not necessarily mean that the compressor will constantly provide 12,000 BTU to each one. Demand varies continuously.\u003c\/p\u003e\n\u003ch3\u003eA practical advantage for a two-story home\u003c\/h3\u003e\n\u003cp\u003eLet’s consider a scenario we frequently encounter in \u003cstrong\u003eGreater Montreal\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe ground floor of a \u003cstrong\u003eSouth Shore\u003c\/strong\u003e home is open, with a living room, dining room, and kitchen. The upper floor contains three bedrooms connected by a hallway.\u003c\/p\u003e\n\u003cp\u003eInstalling a single very high-capacity unit in the living room could cool the ground floor effectively, but the cool air would not naturally rise to the bedrooms evenly. In heating mode, the behavior will be different again, since warm air tends to rise, sometimes at the expense of comfort on the ground floor.\u003c\/p\u003e\n\u003cp\u003eWith two zones, we can instead position:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ean indoor unit in the main living area;\u003c\/li\u003e\n\u003cli\u003ea second unit in a strategic area upstairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe result is not simply an increase in capacity. Above all, it is \u003cstrong\u003ebetter distribution of heating and cooling\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTwo thermostats, two truly independent temperatures\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit has its own control.\u003c\/p\u003e\n\u003cp\u003eThis means that a homeowner could request, for example:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e21 °C on the ground floor\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e19 °C in the bedrooms\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt night, the needs may be reversed. The living room zone may require very little heating while the bedroom zone remains active.\u003c\/p\u003e\n\u003cp\u003eThis independence is one of the main advantages of a \u003cstrong\u003emulti-zone heat pump\u003c\/strong\u003e compared with a single large wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eHowever, it is important to understand a fundamental limitation of multi-zone systems: indoor units connected to the same outdoor unit must normally operate in compatible modes. With a conventional reversible compressor, you cannot continuously request cooling in one zone and heating in another.\u003c\/p\u003e\n\u003cp\u003eThis is a detail we always explain before installation, particularly in buildings where some rooms receive a great deal of sunlight while others remain cold.\u003c\/p\u003e\n\u003ch3\u003e-30 °C: the SENVILLE continues to heat, but the available capacity changes\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate heating operation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, and the Senville brochure also confirms a minimum outdoor operating temperature of \u003cstrong\u003e-22 °F \/ -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe “-30 °C” designation must nevertheless be interpreted correctly.\u003c\/p\u003e\n\u003cp\u003eIt does not mean that the system produces its full nominal capacity of 27,000 or 28,000 BTU at that temperature.\u003c\/p\u003e\n\u003cp\u003eThe data published by AirGreen notably indicates:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eOutdoor temperature\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eHeating capacity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e30,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-15 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e27,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-30 °C maximum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e14,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe stated COP is approximately \u003cstrong\u003e2.36 at -8 °C\u003c\/strong\u003e and \u003cstrong\u003e1.26 at -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis information is extremely useful for a Quebec home.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-8 °C\u003c\/strong\u003e, the published heating capacity is even higher than the machine's nominal capacity. At \u003cstrong\u003e-15 °C\u003c\/strong\u003e, it remains substantial. But when we reach \u003cstrong\u003e-30 °C\u003c\/strong\u003e, the maximum capacity drops to approximately 14,000 BTU\/h.\u003c\/p\u003e\n\u003cp\u003eThis heat pump can therefore continue heating during a period of intense cold, but it may need the support of supplemental heating if the property's heat loss exceeds the heat it can produce at that point.\u003c\/p\u003e\n\u003ch3\u003eWhy the COP at -30 °C must be understood before evaluating savings\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003eCOP of 1.26\u003c\/strong\u003e means approximately that for each unit of electrical energy consumed, the heat pump transfers 1.26 units of heat.\u003c\/p\u003e\n\u003cp\u003eAt more moderate temperatures, a COP of \u003cstrong\u003e2.36 at -8 °C\u003c\/strong\u003e is considerably more advantageous.\u003c\/p\u003e\n\u003cp\u003eThat is why the annual savings from a heat pump should never be judged solely by its performance on the coldest day in January.\u003c\/p\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal, Laval, Longueuil, on the North Shore or South Shore\u003c\/strong\u003e, much of the heating season takes place at temperatures far milder than -30 °C. During these hundreds of operating hours, the heat pump can significantly reduce the use of electric baseboard heaters or another backup heating system.\u003c\/p\u003e\n\u003ch3\u003eCold-climate and ENERGY STAR certification\u003c\/h3\u003e\n\u003cp\u003eFor this AirGreen configuration, the SENVILLE is identified as:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSenville documentation also confirms that the SENA-28HF-MOA is marketed as an \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e system and as a cold-climate heat pump capable of operating down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis distinction is important in Quebec, particularly when the heat pump is selected as part of a financial assistance application.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a \u003cstrong\u003e$3,600 provincial rebate\u003c\/strong\u003e for the combination in question. As with any financial assistance, we recommend confirming the eligibility of the exact combination installed and the applicable conditions at the time of the project.\u003c\/p\u003e\n\u003cp\u003eWith a multi-zone system, this verification is all the more important because the same outdoor unit can support different combinations of indoor units.\u003c\/p\u003e\n\u003ch3\u003eThe AHRI number matters more than the series name\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENA-28HF-MOA\u003c\/strong\u003e unit is a multi-zone platform. The brochure states that it can be configured for \u003cstrong\u003e2 to 4 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe product sheet shown in the brochure presents, for example, a combination with \u003cstrong\u003etwo 12,000 BTU indoor units each\u003c\/strong\u003e and two 16 ft installation kits. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis does not mean that all possible combinations have exactly the same certified performance.\u003c\/p\u003e\n\u003cp\u003eFor AirGreen, the \u003cstrong\u003eAHRI 215735314\u003c\/strong\u003e reference associated with the product is therefore essential. When a homeowner compares quotes, they should always verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe outdoor unit model number;\u003c\/li\u003e\n\u003cli\u003ethe indoor unit models;\u003c\/li\u003e\n\u003cli\u003ethe AHRI combination;\u003c\/li\u003e\n\u003cli\u003elow-temperature heating capacity;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR status;\u003c\/li\u003e\n\u003cli\u003eeligibility for the subsidy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply comparing “Senville 28,000 BTU” with another 28,000 BTU heat pump is not enough.\u003c\/p\u003e\n\u003ch2\u003eInstallation, energy consumption, and technical details: what we verify before recommending this SENVILLE 2-zone system\u003c\/h2\u003e\n\u003ch3\u003e23 SEER2: high cooling efficiency\u003c\/h3\u003e\n\u003cp\u003eThe Senville brochure displays \u003cstrong\u003e23 SEER2 ENERGY STAR\u003c\/strong\u003e for the system, and its technical table indicates a SEER of 23.8 and an \u003cstrong\u003eEER of 12.5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet lists \u003cstrong\u003eSEER 23.0\u003c\/strong\u003e and EER 12.5.\u003c\/p\u003e\n\u003cp\u003eThese differences may result from the type of data displayed, the combination of indoor units, or the certification method. We therefore avoid using a single figure to compare two multi-zone systems without verifying their exact configuration.\u003c\/p\u003e\n\u003cp\u003eIn practice, the important point for the homeowner is that this is a high-efficiency multi-zone heat pump designed to modulate rather than operate constantly at maximum capacity.\u003c\/p\u003e\n\u003ch3\u003eR-454B: an important consideration for a new installation\u003c\/h3\u003e\n\u003cp\u003eThis generation uses \u003cstrong\u003eR-454B refrigerant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure indicates a charge of \u003cstrong\u003e120.61 oz\u003c\/strong\u003e and a precharge allowing up to \u003cstrong\u003e100 ft of piping\u003c\/strong\u003e, depending on the configuration specified by the manufacturer. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a multi-zone system, the total piping length is particularly important, because each indoor unit has its own route to the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIn a two-story home in \u003cstrong\u003eLaval\u003c\/strong\u003e, for example, a ground-floor head may be 15 ft from the compressor, while a head located upstairs may require 35 or 40 ft of piping.\u003c\/p\u003e\n\u003cp\u003eWe therefore calculate the piping routes before confirming the location of the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eAn installation where the piping unnecessarily runs throughout the entire building increases costs, multiplies the areas that need to be covered, and complicates future maintenance.\u003c\/p\u003e\n\u003ch3\u003ePiping: do not extrapolate a single size to every configuration\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003e1\/4 in. – 3\/8 in.\u003c\/strong\u003e for the piping.\u003c\/p\u003e\n\u003cp\u003eFor a multi-zone heat pump, however, the diameters must always be confirmed according to the \u003cstrong\u003eactual connected indoor units\u003c\/strong\u003e. The requirements of a small-capacity head may differ from those of a larger head.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore do not order the piping simply based on the total tonnage of the outdoor unit.\u003c\/p\u003e\n\u003ch3\u003eMCA 30 A and MOP 35 A\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003epower supply: \u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003evoltage range: \u003cstrong\u003e187 to 253 V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eMCA\u003c\/strong\u003e represents the minimum circuit ampacity required based on the equipment specifications, while the \u003cstrong\u003eMOP\u003c\/strong\u003e indicates the maximum overcurrent protection permitted for the unit.\u003c\/p\u003e\n\u003cp\u003eThese are essential data for planning the electrical circuit correctly.\u003c\/p\u003e\n\u003cp\u003eA common mistake is choosing the circuit breaker solely based on the nominal BTU capacity. Instead, the electrical specifications listed in the documentation and on the nameplate should guide the installation.\u003c\/p\u003e\n\u003ch3\u003eA 168 lb outdoor unit: the support deserves serious consideration\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures \u003cstrong\u003e37.24 in. wide × 16.14 in. deep × 31.89 in. high\u003c\/strong\u003e and weighs approximately \u003cstrong\u003e168.43 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is not a small 9,000 BTU unit.\u003c\/p\u003e\n\u003cp\u003eWe must provide a support suited to its weight, height, and winter conditions.\u003c\/p\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal and on the South Shore\u003c\/strong\u003e, we regularly see older installations where an outdoor unit is almost at ground level. After a heavy snowfall, the lower heat exchanger may be partially blocked.\u003c\/p\u003e\n\u003cp\u003eFor a heat pump designed to operate down to -30 °C, this mistake is particularly counterproductive.\u003c\/p\u003e\n\u003cp\u003eWe look for a location where:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow does not block the heat exchanger;\u003c\/li\u003e\n\u003cli\u003edefrost water can drain away;\u003c\/li\u003e\n\u003cli\u003eair circulates freely;\u003c\/li\u003e\n\u003cli\u003ethe unit remains accessible for maintenance;\u003c\/li\u003e\n\u003cli\u003evibrations are not unnecessarily transmitted to the building.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApproximately 2,130 CFM through the outdoor unit\u003c\/h3\u003e\n\u003cp\u003eThe published maximum outdoor airflow is \u003cstrong\u003e2,129.41 CFM\u003c\/strong\u003e, or approximately 2,130 CFM. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis figure explains why clearance around the outdoor unit is essential.\u003c\/p\u003e\n\u003cp\u003eA heat pump installed too close to a wall, enclosed under a deck, or surrounded by objects may draw back in some of the air it has just discharged and operate under less favorable conditions.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan the location before even determining the pipe route.\u003c\/p\u003e\n\u003ch3\u003e61 dB(A) outdoors: choosing the right wall\u003c\/h3\u003e\n\u003cp\u003eThe stated outdoor sound level is \u003cstrong\u003e61 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a detached house with plenty of side space, this value is rarely the only decisive factor.\u003c\/p\u003e\n\u003cp\u003eIn a \u003cstrong\u003eMontreal\u003c\/strong\u003e plex or a \u003cstrong\u003eLaval\u003c\/strong\u003e condo, or on a property where the houses are close together, placement deserves more attention.\u003c\/p\u003e\n\u003cp\u003eWe avoid placing the outdoor unit directly near, whenever possible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea bedroom window;\u003c\/li\u003e\n\u003cli\u003ea patio;\u003c\/li\u003e\n\u003cli\u003ea frequently used balcony;\u003c\/li\u003e\n\u003cli\u003ea nearby window;\u003c\/li\u003e\n\u003cli\u003ea corner formed by several walls that may reflect noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn acoustically acceptable system on paper may seem more noticeable when installed in a location that amplifies vibrations or sound reflections.\u003c\/p\u003e\n\u003ch3\u003eWiFi included and smart control\u003c\/h3\u003e\n\u003cp\u003eSENVILLE enables smart control, and the brochure confirms integration with \u003cstrong\u003eAlexa as well as control through the app\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a two-zone installation, WiFi is more useful than it may seem.\u003c\/p\u003e\n\u003cp\u003eThe homeowner can manage both zones without walking through the house to adjust each remote control. For a second home or rental property, they can also adjust the temperatures remotely.\u003c\/p\u003e\n\u003cp\u003eWe consider this feature a complement to the control system, not a substitute for proper sizing. An app cannot compensate for a poorly placed indoor unit.\u003c\/p\u003e\n\u003ch3\u003eAutomatic louvers improve air distribution\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003eautomatic vertical and automatic horizontal louvers\u003c\/strong\u003e for the units concerned.\u003c\/p\u003e\n\u003cp\u003eIn a large room, this movement allows the air to be distributed over a wider area.\u003c\/p\u003e\n\u003cp\u003ePositioning remains much more important than oscillation, however.\u003c\/p\u003e\n\u003cp\u003eA unit installed above a tall cabinet, facing a wall a few feet away, or in an enclosed corridor may remain limited, even with motorized louvers.\u003c\/p\u003e\n\u003ch3\u003eHow we choose the two indoor locations\u003c\/h3\u003e\n\u003cp\u003eFor a \u003cstrong\u003emulti-zone HVAC installation\u003c\/strong\u003e, we want to achieve the best possible airflow with each unit.\u003c\/p\u003e\n\u003cp\u003eWe look at, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe shape of the rooms;\u003c\/li\u003e\n\u003cli\u003edoors that generally remain open or closed;\u003c\/li\u003e\n\u003cli\u003estairs;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003eexterior walls;\u003c\/li\u003e\n\u003cli\u003ewindow placement;\u003c\/li\u003e\n\u003cli\u003emajor heat sources;\u003c\/li\u003e\n\u003cli\u003ethe possible drain route;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant line route;\u003c\/li\u003e\n\u003cli\u003efuture access for \u003cstrong\u003eHVAC maintenance\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, we also avoid directing the airflow straight toward the bed when the layout allows for a better location.\u003c\/p\u003e\n\u003ch3\u003eWhy two smaller zones can be better than a single large head\u003c\/h3\u003e\n\u003cp\u003eWe often have homeowners who think only in terms of total capacity: “If I need 24,000 BTU, why not install a single 24,000 BTU unit?”\u003c\/p\u003e\n\u003cp\u003eBecause a heat pump heats and cools with \u003cstrong\u003eair\u003c\/strong\u003e, and air does not travel effectively through several closed walls.\u003c\/p\u003e\n\u003cp\u003eA 24,000 BTU unit in the living room will not necessarily provide better comfort in a bedroom at the other end of the building than a much smaller unit installed directly in that zone.\u003c\/p\u003e\n\u003cp\u003eIn this type of situation, \u003cstrong\u003edistribution may be more important than raw capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is one of the key advantages of the SENVILLE 2-zone system.\u003c\/p\u003e\n\u003ch3\u003eBeware of oversizing indoor units\u003c\/h3\u003e\n\u003cp\u003eThe opposite mistake also exists.\u003c\/p\u003e\n\u003cp\u003eSince two heads are available, it may be tempting to choose the largest possible capacity for each one.\u003c\/p\u003e\n\u003cp\u003eWe prefer to match each head to the load of its zone. A well-insulated bedroom or small floor does not necessarily need 12,000 BTU simply because the outdoor unit can accommodate it.\u003c\/p\u003e\n\u003cp\u003eAn indoor unit that is too large can quickly reach its setpoint and provide less favorable modulation in a small room.\u003c\/p\u003e\n\u003ch3\u003eLeak detection and self-diagnosis\u003c\/h3\u003e\n\u003cp\u003eSenville also highlights \u003cstrong\u003eself-diagnosis and leak detection\u003c\/strong\u003e functions, designed to facilitate the identification of certain operating problems. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese functions can assist with diagnosis, but they obviously do not replace a professional inspection when a system loses capacity, makes noise, produces abnormal ice buildup, or displays an error code.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference to verify between the AirGreen sheet and the brochure\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen sheet indicates a manufacturer’s warranty of \u003cstrong\u003e10-10-0\u003c\/strong\u003e, namely:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labor\u003c\/strong\u003e, with the possibility of additional coverage.\u003c\/p\u003e\n\u003cp\u003eHowever, the Senville brochure provided with the product states \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. This information appears both in the sales presentation and in the brochure’s technical table. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference should be confirmed at the time of purchase based on \u003cstrong\u003ethe exact combination, purchase date, and applicable registration conditions\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we prefer to verify the coverage that actually applies rather than automatically presenting the longest warranty when contradictory documentation exists.\u003c\/p\u003e\n\u003ch3\u003eMaintaining a multi-zone heat pump: two indoor units to monitor\u003c\/h3\u003e\n\u003cp\u003eA 2-zone system also means two filters, two indoor heat exchangers, two fans, and two drains.\u003c\/p\u003e\n\u003cp\u003eBoth zones therefore need to be maintained.\u003c\/p\u003e\n\u003cp\u003eAmong the signs that warrant an inspection or cleaning:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ereduced airflow;\u003c\/li\u003e\n\u003cli\u003eodor at startup;\u003c\/li\u003e\n\u003cli\u003evisible dust on the fan wheel;\u003c\/li\u003e\n\u003cli\u003ewater flowing inside;\u003c\/li\u003e\n\u003cli\u003esignificant difference in output between zones;\u003c\/li\u003e\n\u003cli\u003eunusual noise;\u003c\/li\u003e\n\u003cli\u003eabnormal frost or ice;\u003c\/li\u003e\n\u003cli\u003eunusual increase in consumption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA head that operates very frequently in a busy living room can become dirty more quickly than a unit installed in a bedroom used only at night.\u003c\/p\u003e\n\u003ch3\u003eWho do we recommend this SENVILLE R454B 2-zone system for?\u003c\/h3\u003e\n\u003cp\u003eThis solution is particularly well suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea \u003cstrong\u003etwo-story home\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ea ground floor and basement requiring independent controls;\u003c\/li\u003e\n\u003cli\u003etwo large separate rooms;\u003c\/li\u003e\n\u003cli\u003ea condo with a main living area and a separate bedroom zone;\u003c\/li\u003e\n\u003cli\u003ea property where avoiding two outdoor units is desired;\u003c\/li\u003e\n\u003cli\u003ea project seeking a \u003cstrong\u003ecold-climate ENERGY STAR heat pump\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ea residence where low-temperature heating is a priority;\u003c\/li\u003e\n\u003cli\u003ea homeowner seeking \u003cstrong\u003ebuilt-in WiFi\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is less advantageous when two zones have completely opposite needs for extended periods, or when the indoor units would be installed in rooms that are too small for their minimum capacity.\u003c\/p\u003e\n\u003ch3\u003eA strong technical specification sheet is not enough: the result depends on the installation\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE SENA-28HF-MOA combines several features that are particularly relevant in Québec: \u003cstrong\u003eR-454B, operation down to -30 °C, cold-climate certification, ENERGY STAR, high seasonal efficiency, and multi-zone management\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBut the numbers do not replace design work.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, we assess the building, the loads of the different rooms, the locations of the two heads, piping routes, drainage, electrical installation, and outdoor unit placement before confirming the configuration.\u003c\/p\u003e\n\u003cp\u003eThis approach is particularly important with a multi-zone heat pump because the outdoor unit, indoor units, and line lengths must operate as a single system.\u003c\/p\u003e\n\u003ch3\u003eSENVILLE 2-zone installation in Montréal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/h3\u003e\n\u003cp\u003eFor a property in \u003cstrong\u003eMontréal, Laval, Longueuil, Boucherville, Terrebonne, Blainville, or elsewhere on the North Shore and South Shore\u003c\/strong\u003e, we can verify whether a \u003cstrong\u003eSENVILLE 2-zone 27,000 BTU configuration with a SENA-28HF-MOA outdoor unit\u003c\/strong\u003e truly meets the building’s needs.\u003c\/p\u003e\n\u003cp\u003eWe can also validate the AHRI combination, low-temperature capacities, electrical requirements, indoor and outdoor locations, as well as the subsidy applicable to the project.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen for a quote and to have your SENVILLE 2-zone heat pump properly sized. Proper configuration is not simply a matter of BTU count: it starts with choosing the right two zones and ends with an HVAC installation designed to operate efficiently during Montréal’s humid summers and winters.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"12 + 12","offer_id":56200890908964,"sku":"SENA-28HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 18","offer_id":56200890941732,"sku":"SENA-28HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 18","offer_id":56200890974500,"sku":"SENA-28HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_2_ZONES_SENVILLE_R454B_27000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057708"},{"product_id":"thermopompe-2-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 2-Zone Heat Pump | 36000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTwo zones, a single outdoor compressor, and capacity designed for a true Québec winter\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e36,000 BTU 2-zone heat pump\u003c\/strong\u003e meets a very different need from a single-zone wall-mounted heat pump. It can heat and cool two distinct areas of a property from a single outdoor unit, while giving each zone its own indoor unit and temperature control.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-36HF-MOA R454B\u003c\/strong\u003e is particularly interesting in this category because it combines a nominal capacity of \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e, an efficiency rating of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification, heating operation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, included Wi-Fi, and a multi-zone architecture that can be configured according to the building's needs. Senville documentation presents the SENA-36HF\/D system as a 36,000 BTU ductless heat pump designed for multi-zone applications and ENERGY STAR certified. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the \u003cstrong\u003e2-zone\u003c\/strong\u003e configuration, the manufacturer's page illustrates, among other options, an \u003cstrong\u003e18,000 BTU + 18,000 BTU\u003c\/strong\u003e pairing, with two indoor units powered by a single outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, this type of system is particularly relevant in Greater Montréal when a homeowner wants to replace two old air conditioners, heat two floors without installing ductwork, or better control two large zones with different heating and cooling loads.\u003c\/p\u003e\n\u003cp\u003eThe configuration shown includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-36HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNominal cooling capacity: 36,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735317\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR reference: 3630064\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 13.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 4: 10.7\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 3,038 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpecified piping: 1\/4 in – 1\/2 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAdditional warranty available\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicated provincial financial assistance: up to $4,560\u003c\/strong\u003e, subject to applicable eligibility conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy the 2-zone format may make more sense than two independent heat pumps\u003c\/h3\u003e\n\u003cp\u003eIn many properties in \u003cstrong\u003eMontréal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/strong\u003e, installing two independent outdoor units is not always desirable.\u003c\/p\u003e\n\u003cp\u003eOutdoor space may be limited. A condominium association may impose certain restrictions. A side façade may already contain an electrical meter, a gas line, a basement window, or a narrow passage.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003emulti-zone heat pump\u003c\/strong\u003e can then connect two indoor units to a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003eThis notably simplifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe use of the outdoor space;\u003c\/li\u003e\n\u003cli\u003ethe appearance of the installation;\u003c\/li\u003e\n\u003cli\u003ethe number of visible mechanical units;\u003c\/li\u003e\n\u003cli\u003ecertain portions of the electrical connection;\u003c\/li\u003e\n\u003cli\u003emanaging two separate spaces with a single outdoor platform.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHowever, it is important to understand that a multi-zone system is not simply “two heat pumps combined in one box.” The two indoor units share the available capacity of the same outdoor compressor.\u003c\/p\u003e\n\u003cp\u003eThis is precisely where sizing becomes important.\u003c\/p\u003e\n\u003ch3\u003e36,000 BTU outdoors does not necessarily mean a constant 18,000 BTU in each room\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates a \u003cstrong\u003enominal heating capacity of 36,000 BTU\/h\u003c\/strong\u003e, with a modulating range from \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e. In cooling mode, the stated range extends from \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is one of the important features of an inverter system.\u003c\/p\u003e\n\u003cp\u003eConsider a configuration with two 18,000 BTU indoor units. This does not mean that each one constantly receives exactly 18,000 BTU.\u003c\/p\u003e\n\u003cp\u003eIf a single zone requires a great deal of heating while the second is already close to its setpoint, the compressor can adjust its output. Conversely, when both zones simultaneously require substantial capacity, the outdoor unit must distribute what it can produce between the two indoor units.\u003c\/p\u003e\n\u003cp\u003eThis distinction is essential for a successful installation.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore seek to understand not only the total area, but also \u003cstrong\u003ethe load of each zone\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA very common layout: open ground floor and upper floor with bedrooms\u003c\/h3\u003e\n\u003cp\u003eIn a \u003cstrong\u003eSouth Shore\u003c\/strong\u003e home, for example, the ground floor may include the living room, dining room, and kitchen in one large open area, while the upper floor contains several bedrooms accessible from a hallway.\u003c\/p\u003e\n\u003cp\u003eInstalling an identical indoor unit on each floor may seem simple, but the needs may differ.\u003c\/p\u003e\n\u003cp\u003eThe ground floor may experience greater solar gains in the afternoon. The upper floor may accumulate heat in the summer. An open stairwell can allow warm air to rise and alter the balance between the two zones.\u003c\/p\u003e\n\u003cp\u003eWe must then take into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe location of each indoor unit;\u003c\/li\u003e\n\u003cli\u003enatural air circulation;\u003c\/li\u003e\n\u003cli\u003edoor layout;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003eattic insulation;\u003c\/li\u003e\n\u003cli\u003ethe area actually open to the unit;\u003c\/li\u003e\n\u003cli\u003ethe heat loss from each floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is often this design work that determines whether a \u003cstrong\u003e2-zone heat pump\u003c\/strong\u003e will be comfortable in every room.\u003c\/p\u003e\n\u003ch3\u003eA 23 SEER2 rating that puts summer efficiency first\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation confirms a rating of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e for the SENA-36HF-MOA. It also indicates an HSPF2 of \u003cstrong\u003e10.7 for Region 4\u003c\/strong\u003e and \u003cstrong\u003e8.5 for Region 5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSEER2 represents seasonal cooling efficiency according to a standardized testing methodology.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner who uses air conditioning extensively in \u003cstrong\u003eMontreal or Laval\u003c\/strong\u003e, a SEER2 rating of 23 is therefore highly relevant.\u003c\/p\u003e\n\u003cp\u003eHowever, we advise against selecting a heat pump based solely on its SEER2 rating.\u003c\/p\u003e\n\u003cp\u003eAn extremely efficient system on paper can lose some of its advantage if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe indoor units are poorly positioned;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant lines are improperly installed;\u003c\/li\u003e\n\u003cli\u003ethe system is oversized;\u003c\/li\u003e\n\u003cli\u003ethe filters are neglected;\u003c\/li\u003e\n\u003cli\u003ea unit blows directly toward a staircase rather than toward the occupied area;\u003c\/li\u003e\n\u003cli\u003ethe drains are poorly designed;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant is not managed properly during commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA heat pump’s efficiency is therefore the result of two elements: \u003cstrong\u003ethe equipment and the installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e38,000 BTU at -8 °C: a particularly interesting figure for Montreal\u003c\/h3\u003e\n\u003cp\u003eThe available data for this configuration indicate a heating capacity of approximately \u003cstrong\u003e38,000 BTU\/h at -8 °C\u003c\/strong\u003e, with a \u003cstrong\u003eCOP of 2.12\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-15 °C\u003c\/strong\u003e, the listed capacity is still approximately \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis data is particularly relevant in Quebec, since a heat pump is not evaluated only during the mild temperatures of fall. Its performance at -8 °C and -15 °C provides a much more useful indication of what it can deliver during a significant portion of the heating season.\u003c\/p\u003e\n\u003cp\u003eA system capable of maintaining a large portion of its rated capacity at these temperatures can further reduce reliance on backup heating, provided it has been properly sized for the building.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C, capacity decreases: this must be taken into account\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE is advertised as continuing to provide heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, which is also confirmed in the manufacturer’s documentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt this extreme temperature, the data provided for the configuration indicate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eheating capacity: approximately 22,400 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP: approximately 1.47\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis figure deserves more attention than the simple statement “heating down to -30 °C.”\u003c\/p\u003e\n\u003cp\u003eA 36,000 BTU heat pump therefore does not necessarily produce 36,000 BTU when the outdoor temperature reaches -30 °C.\u003c\/p\u003e\n\u003cp\u003eIf a home loses, for example, 35,000 BTU\/h at this temperature and the heat pump provides approximately 22,400, the difference must be supplied by another heating source.\u003c\/p\u003e\n\u003cp\u003eDepending on the property, this may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eelectric baseboard heaters;\u003c\/li\u003e\n\u003cli\u003ean existing furnace;\u003c\/li\u003e\n\u003cli\u003econvector heaters;\u003c\/li\u003e\n\u003cli\u003eanother backup system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt AirGreen, we prefer to explain this reality when selecting the system rather than creating the impression that a minimum operating temperature automatically represents full rated capacity.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.12 at -8°C: what this means in simple terms\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003eCOP of 2.12\u003c\/strong\u003e means that, at the corresponding temperature condition, the heat pump can provide approximately 2.12 units of heat for each unit of electricity consumed by the heat-pumping process.\u003c\/p\u003e\n\u003cp\u003eAt -30°C, the indicated COP drops to \u003cstrong\u003e1,47\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is normal: the lower the outdoor temperature drops, the more difficult it becomes to extract heat from outside and transfer it indoors.\u003c\/p\u003e\n\u003cp\u003eActual performance may also vary depending on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edefrost cycles;\u003c\/li\u003e\n\u003cli\u003ethe requested indoor temperature;\u003c\/li\u003e\n\u003cli\u003ethe number of active zones;\u003c\/li\u003e\n\u003cli\u003ethe length of the lines;\u003c\/li\u003e\n\u003cli\u003ecompressor modulation;\u003c\/li\u003e\n\u003cli\u003eoutdoor conditions;\u003c\/li\u003e\n\u003cli\u003ethe condition of the filters and coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA true cold-climate heat pump\u003c\/h3\u003e\n\u003cp\u003eThe configuration is listed as \u003cstrong\u003eCOLD CLIMATE: Yes\u003c\/strong\u003e, and Senville’s documentation also presents the system as optimized for cold climates, with heating maintained down to \u003cstrong\u003e-22°F, or -30°C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis clearly distinguishes it from a model that can operate only down to -15°C or -20°C.\u003c\/p\u003e\n\u003cp\u003eFor a property in \u003cstrong\u003eLongueuil, Terrebonne, Laval, Boucherville, Repentigny, or Montréal\u003c\/strong\u003e, this operating range corresponds much better to the use we expect from a heat pump used as the primary heating source for a large part of the winter.\u003c\/p\u003e\n\u003ch3\u003eAn ENERGY STAR certification and a specific AHRI number\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e is listed as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e, with reference \u003cstrong\u003e3630064\u003c\/strong\u003e and AHRI number \u003cstrong\u003e215735317\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure also explicitly mentions the system’s ENERGY STAR certification and AHRI certification. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AHRI number is important because it identifies a certified combination rather than merely a product family.\u003c\/p\u003e\n\u003cp\u003eWhen we prepare an installation involving financial assistance, we must ensure that the installed equipment matches the eligible pairing.\u003c\/p\u003e\n\u003ch3\u003eUp to $4,560 in indicated provincial grants\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen sheet indicates a \u003cstrong\u003e$4,560 provincial grant\u003c\/strong\u003e for this configuration.\u003c\/p\u003e\n\u003cp\u003eThis amount can make comparison with less efficient systems particularly worthwhile.\u003c\/p\u003e\n\u003cp\u003eHowever, a grant amount should never be considered automatically guaranteed. Programs may impose conditions related in particular to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe building;\u003c\/li\u003e\n\u003cli\u003ethe system type;\u003c\/li\u003e\n\u003cli\u003ethe AHRI number;\u003c\/li\u003e\n\u003cli\u003ethe certification;\u003c\/li\u003e\n\u003cli\u003ethe installation date;\u003c\/li\u003e\n\u003cli\u003ethe contractor;\u003c\/li\u003e\n\u003cli\u003ethe required documentation;\u003c\/li\u003e\n\u003cli\u003ethe criteria in effect at the time of the application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore always recommend confirming actual eligibility before calculating a project’s net cost.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing more than 200 lb: the location must be properly prepared\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures \u003cstrong\u003e38.58 in × 16.34 in × 38.39 in\u003c\/strong\u003e and weighs approximately \u003cstrong\u003e211.86 lb\u003c\/strong\u003e. The manufacturer also specifies a maximum outdoor airflow of \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e and a sound level of \u003cstrong\u003e65 dB\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is therefore not a small outdoor unit.\u003c\/p\u003e\n\u003cp\u003eFor an installation in \u003cstrong\u003eMontreal or Longueuil\u003c\/strong\u003e, where side passages can be narrow, we must measure the location before delivery.\u003c\/p\u003e\n\u003cp\u003eOn the \u003cstrong\u003eNorth Shore or South Shore\u003c\/strong\u003e, space is often more generous, but other constraints arise: snow accumulation, terrain slope, terrace, bedroom windows, or neighboring properties.\u003c\/p\u003e\n\u003cp\u003eA proper outdoor installation must include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea stable base;\u003c\/li\u003e\n\u003cli\u003esufficient height above the snow;\u003c\/li\u003e\n\u003cli\u003eadequate clearance around the heat exchanger;\u003c\/li\u003e\n\u003cli\u003eaccess for maintenance;\u003c\/li\u003e\n\u003cli\u003ea logical route for both piping sets;\u003c\/li\u003e\n\u003cli\u003eproper drain management;\u003c\/li\u003e\n\u003cli\u003ea location that avoids unnecessarily directing noise toward a bedroom or neighboring terrace.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e65 dB outdoors: how to interpret the sound level\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer specifies \u003cstrong\u003e65 dB\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis value must be considered when choosing the location.\u003c\/p\u003e\n\u003cp\u003eA unit installed against a bedroom wall, beneath a window, or in a narrow passage between two buildings may be perceived differently from a unit placed in an open area.\u003c\/p\u003e\n\u003cp\u003eReflective surfaces can also affect how sound is perceived.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, choosing the outdoor location is therefore part of the design, not just a matter of aesthetics.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and maximum protection of 40 A\u003c\/h3\u003e\n\u003cp\u003eThe technical data sheet states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003epower supply: 208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003evoltage range: \u003cstrong\u003e187 to 253 V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emaximum protection: 40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information must be verified before installation.\u003c\/p\u003e\n\u003cp\u003eIn an older Montreal home equipped with a 100 A panel, for example, we do not assume that a new heat pump circuit can simply be added without analysis.\u003c\/p\u003e\n\u003cp\u003eThe available capacity at the electrical panel, existing loads, and the project’s electrical requirements must be verified.\u003c\/p\u003e\n\u003ch3\u003eR-454B: another generation of refrigerant\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe documentation indicates a charge of \u003cstrong\u003e134.04 oz\u003c\/strong\u003e and specifies that the unit is \u003cstrong\u003eprecharged for up to 125 ft of refrigerant line\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis substantial precharge is particularly relevant for a multi-zone heat pump, since two indoor units may require separate piping runs.\u003c\/p\u003e\n\u003cp\u003eHowever, “precharged for 125 ft” should not be interpreted as authorization to install any length or configuration without respecting the manufacturer’s specified limits.\u003c\/p\u003e\n\u003cp\u003eEach branch must be properly designed, with the appropriate diameters and a compliant installation.\u003c\/p\u003e\n\u003ch3\u003eWhy piping matters even more on a two-zone system\u003c\/h3\u003e\n\u003cp\u003eThe configuration specifies \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eOn a two-zone system, we must manage two separate refrigerant lines from the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIn a duplex, a two-story house, or a property with one indoor unit at the front and the other at the back, the lengths can become substantial.\u003c\/p\u003e\n\u003cp\u003eA clean installation notably requires:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ea well-planned route before drilling;\u003c\/li\u003e\n\u003cli\u003ean appropriate slope for gravity drains;\u003c\/li\u003e\n\u003cli\u003emechanical protection for the lines;\u003c\/li\u003e\n\u003cli\u003eproperly executed refrigerant connections;\u003c\/li\u003e\n\u003cli\u003ea proper vacuum before commissioning;\u003c\/li\u003e\n\u003cli\u003ea leak-tightness check;\u003c\/li\u003e\n\u003cli\u003ean exterior finish that remains accessible for servicing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eAn error on a single branch can affect the comfort of one zone and complicate future troubleshooting.\u003c\/p\u003e\n\u003ch3\u003eTwo zones do not mean simultaneous heating and cooling\u003c\/h3\u003e\n\u003cp\u003eThis is a common question with multi-zone heat pumps.\u003c\/p\u003e\n\u003cp\u003eIndoor units connected to the same outdoor unit generally need to operate in a compatible mode. In other words, you should not expect to heat one zone significantly while the other is simultaneously providing cooling.\u003c\/p\u003e\n\u003cp\u003eIn a typical residence, this is generally not a problem.\u003c\/p\u003e\n\u003cp\u003eHowever, in a property with very different orientations, a large sun-exposed sunroom, and a cold north-facing room, this point can become important during the shoulder seasons.\u003c\/p\u003e\n\u003cp\u003eWe take this into account before recommending a multi-zone configuration.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included and Alexa integration\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA includes smart control features.\u003c\/p\u003e\n\u003cp\u003eThe documentation indicates \u003cstrong\u003eapp control\u003c\/strong\u003e, \u003cstrong\u003eAlexa\u003c\/strong\u003e compatibility, and the ability to schedule the system and manage comfort remotely. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe manufacturer also lists an \u003cstrong\u003eAlexa USB kit\u003c\/strong\u003e, wireless remote controls, and communication wiring among the included components. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a two-zone installation, this feature is more useful than in multiple single-zone systems, because the homeowner can manage the two spaces separately without having to go to each unit.\u003c\/p\u003e\n\u003ch3\u003eAutomatic vertical and horizontal louvers\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen configuration indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003evertical louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ehorizontal louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the airflow to be directed more effectively in a large room.\u003c\/p\u003e\n\u003cp\u003eHowever, the unit’s location remains crucial. Even with motorized oscillation, a unit installed too close to a wall, directly in front of a staircase, or in a poorly chosen corner will not distribute air as effectively as a unit positioned after analyzing the room.\u003c\/p\u003e\n\u003ch3\u003eIntegrated diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville documentation mentions an integrated \u003cstrong\u003ediagnostic and leak-detection system\u003c\/strong\u003e, with monitoring capable of alerting the user to a problem, particularly one related to refrigerant. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese functions can speed up the identification of certain anomalies, but they do not replace a technical diagnosis.\u003c\/p\u003e\n\u003cp\u003eAn error code often helps identify a group of problems; it does not necessarily indicate which part needs to be replaced.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we use diagnostic information as a starting point, then verify the system’s actual conditions.\u003c\/p\u003e\n\u003ch3\u003e“Up to 1,800 sq. ft.”: a marketing indication, not a sizing method\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates that the system can cover \u003cstrong\u003eup to 1,800 sq. ft.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe recommend treating this figure with caution.\u003c\/p\u003e\n\u003cp\u003eA recently built 1,800 sq. ft. home on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e and a century-old 1,800 sq. ft. home in Montreal can have completely different heat losses.\u003c\/p\u003e\n\u003cp\u003eEven the distribution of the 1,800 sq. ft. changes the result.\u003c\/p\u003e\n\u003cp\u003eAn open bungalow does not perform the same way as a three-story house with several enclosed bedrooms.\u003c\/p\u003e\n\u003cp\u003eWe therefore use area as one piece of data among several others, never as the sole sizing criterion.\u003c\/p\u003e\n\u003ch2\u003eAirGreen Installation: how to turn a good specification sheet into true comfort in two zones\u003c\/h2\u003e\n\u003ch3\u003eThe choice of the two indoor units is just as important as that of the outdoor compressor\u003c\/h3\u003e\n\u003cp\u003eThe system documentation indicates that it can support \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e, depending on the configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn the application discussed here, we are referring to a \u003cstrong\u003etwo-zone configuration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer offers, among other options, an \u003cstrong\u003e18,000 + 18,000 BTU\u003c\/strong\u003e combination, but the right combination must be adapted to the building. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTwo zones of similar area do not always require the same indoor unit.\u003c\/p\u003e\n\u003cp\u003eA large open room with a cathedral ceiling may have a higher load than a floor of comparable area with several well-insulated bedrooms.\u003c\/p\u003e\n\u003cp\u003eThe distribution must therefore be decided before ordering.\u003c\/p\u003e\n\u003ch3\u003eThe mistake we want to avoid: choosing the heads based solely on square footage\u003c\/h3\u003e\n\u003cp\u003eSuppose that two zones are each 800 sq. ft.\u003c\/p\u003e\n\u003cp\u003eIt would be tempting to conclude that they require the same capacity.\u003c\/p\u003e\n\u003cp\u003eBut the first may have:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elarge patio doors;\u003c\/li\u003e\n\u003cli\u003ea 12-foot ceiling;\u003c\/li\u003e\n\u003cli\u003ea southwest-facing orientation;\u003c\/li\u003e\n\u003cli\u003ean open kitchen;\u003c\/li\u003e\n\u003cli\u003emore air infiltration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe second may include rooms with small windows and standard-height ceilings.\u003c\/p\u003e\n\u003cp\u003eThe number of square feet is the same, but the load is not.\u003c\/p\u003e\n\u003cp\u003eThat is why we assess the building’s actual conditions before choosing the distribution of the indoor units.\u003c\/p\u003e\n\u003ch3\u003eThe drains can be more complicated than the refrigerant lines\u003c\/h3\u003e\n\u003cp\u003eOn a wall-mounted heat pump, each indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eWith two zones, we therefore have two drains to manage.\u003c\/p\u003e\n\u003cp\u003eWhen a natural slope toward the outside is available, drainage remains relatively simple. When the unit must be installed on an interior wall or in a configuration where gravity is insufficient, a condensate pump may be required.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we try to account for this aspect during the estimate because poor drainage can lead to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewater leaks;\u003c\/li\u003e\n\u003cli\u003epump noise;\u003c\/li\u003e\n\u003cli\u003emarks on the wall;\u003c\/li\u003e\n\u003cli\u003eadditional maintenance;\u003c\/li\u003e\n\u003cli\u003esystem shutdowns if a safety device is triggered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe warranty deserves careful verification\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen listing indicates a \u003cstrong\u003e10-10-0 manufacturer’s warranty\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eHowever, the Senville documentation provided specifies \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt also states that \u003cstrong\u003eprofessional installation is required\u003c\/strong\u003e to maintain full warranty coverage and the expected performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen preparing a quote, we therefore always recommend confirming the exact coverage corresponding to the system combination sold, the registration conditions, and the terms in effect.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer’s warranty and a labor warranty are two different protections.\u003c\/p\u003e\n\u003ch3\u003eSimple maintenance, but two indoor units to monitor\u003c\/h3\u003e\n\u003cp\u003eOne of the advantages of a ductless heat pump is the absence of a central network to maintain.\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean “zero maintenance.”\u003c\/p\u003e\n\u003cp\u003eEach indoor unit has its own filters and heat exchanger.\u003c\/p\u003e\n\u003cp\u003eTo maintain good performance, we particularly recommend:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eto clean the filters regularly;\u003c\/li\u003e\n\u003cli\u003eto monitor dust buildup in the blower wheels;\u003c\/li\u003e\n\u003cli\u003eto keep the air inlets and outlets clear;\u003c\/li\u003e\n\u003cli\u003eto check the drains;\u003c\/li\u003e\n\u003cli\u003eto avoid blocking the outdoor unit with objects or vegetation;\u003c\/li\u003e\n\u003cli\u003eto keep the outdoor unit clear of snow;\u003c\/li\u003e\n\u003cli\u003eto have the indoor units thoroughly cleaned when dirt buildup warrants it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a two-zone system, a very dirty unit may operate less efficiently than the other and give the impression that the system is distributing its capacity poorly.\u003c\/p\u003e\n\u003ch3\u003eWhen this SENVILLE 36,000 BTU 2-zone system is an excellent candidate\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-36HF-MOA R454B\u003c\/strong\u003e is particularly worth considering when a homeowner wants to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eheat and cool two large zones with a single outdoor unit;\u003c\/li\u003e\n\u003cli\u003eget a heat pump that operates down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003etake advantage of a \u003cstrong\u003e23 SEER2\u003c\/strong\u003e rating;\u003c\/li\u003e\n\u003cli\u003emaintain strong heating capacity at -8 °C and -15 °C;\u003c\/li\u003e\n\u003cli\u003ebenefit from an \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e system;\u003c\/li\u003e\n\u003cli\u003eget the included Wi-Fi control;\u003c\/li\u003e\n\u003cli\u003ereduce the number of outdoor units;\u003c\/li\u003e\n\u003cli\u003etake advantage, if eligible, of financial assistance of up to \u003cstrong\u003e4 560 $\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is particularly well suited to projects where the two zones can operate in a complementary manner and where the placement of the indoor units allows for good air distribution.\u003c\/p\u003e\n\u003ch3\u003eWhen we would consider another configuration\u003c\/h3\u003e\n\u003cp\u003eWe might recommend a different approach if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe two zones have extremely different needs;\u003c\/li\u003e\n\u003cli\u003ethey frequently need to operate in opposite modes;\u003c\/li\u003e\n\u003cli\u003ea single indoor unit cannot properly distribute air throughout a divided zone;\u003c\/li\u003e\n\u003cli\u003ethe actual total load exceeds what the system can provide during extreme cold;\u003c\/li\u003e\n\u003cli\u003ethe distance or line-set configuration makes the installation excessively complicated;\u003c\/li\u003e\n\u003cli\u003etwo independent outdoor units would provide greater flexibility for the project.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe best system is therefore not necessarily the one with the highest BTU rating. It is the one whose design matches the building.\u003c\/p\u003e\n\u003ch3\u003eWhy have AirGreen install this 2-zone heat pump\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Climatisation \u0026amp; Chauffage\u003c\/strong\u003e, we do not reduce a multi-zone installation to choosing a location for two wall-mounted units.\u003c\/p\u003e\n\u003cp\u003eWe analyze the entire project:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecapacity of each zone;\u003c\/li\u003e\n\u003cli\u003esolar exposure;\u003c\/li\u003e\n\u003cli\u003eair circulation;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003eindoor unit placement;\u003c\/li\u003e\n\u003cli\u003eline-set length;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003eoutdoor location;\u003c\/li\u003e\n\u003cli\u003esnow management;\u003c\/li\u003e\n\u003cli\u003enoise level;\u003c\/li\u003e\n\u003cli\u003efuture accessibility for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis approach is especially important with a \u003cstrong\u003e36,000 BTU 2-zone heat pump\u003c\/strong\u003e, since both spaces depend on the same outdoor unit.\u003c\/p\u003e\n\u003cp\u003eA well-designed configuration lets you take advantage of inverter modulation, heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, and individual zone control. Conversely, poor placement of the indoor units can reduce comfort despite very appealing technical specifications.\u003c\/p\u003e\n\u003ch3\u003eGet an AirGreen quote for the SENVILLE 2-Zone R454B 36,000 BTU\u003c\/h3\u003e\n\u003cp\u003eAre you considering a \u003cstrong\u003eSENVILLE 2-zone 36,000 BTU heat pump\u003c\/strong\u003e for a house, condo, duplex, or business?\u003c\/p\u003e\n\u003cp\u003eContact \u003cstrong\u003eAirGreen\u003c\/strong\u003e for an assessment of your project. We can verify the required capacity for each zone, the location of the units, the line-set routing, drainage, electrical supply, and eligibility for applicable financial assistance programs.\u003c\/p\u003e\n\u003cp\u003eWe install and service \u003cstrong\u003emulti-zone heat pumps in Montreal, Laval, Longueuil, the North Shore, the South Shore, and Montérégie\u003c\/strong\u003e, with particular attention to sizing and commissioning quality.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"18  + 18","offer_id":56200893956388,"sku":"SENA-36HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 24","offer_id":56200893989156,"sku":"SENA-36HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_2_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057723"},{"product_id":"thermopompe-2-zones-senville-r454b-48000-btu","title":"SENVILLE R454B 2-Zone Heat Pump | 48000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTwo 24,000 BTU zones, one outdoor unit: a configuration designed for large spaces that require true independent control\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e48,000 BTU 2-zone heat pump\u003c\/strong\u003e meets a very different need from a single-zone wall-mounted heat pump. Here, a single outdoor unit powers two separate indoor units, making it possible to condition two major zones of a building while retaining a single outdoor refrigeration system.\u003c\/p\u003e\n\u003cp\u003eThe SENVILLE configuration associated with this listing uses the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e outdoor unit and, in the 2-zone version documented by Senville, two indoor units of \u003cstrong\u003e24,000 BTU each\u003c\/strong\u003e. The brochure specifically identifies the product as the \u003cstrong\u003eSENA-48HF\/D\u003c\/strong\u003e, with the commercial combination \u003cstrong\u003eSENA-48HF-D2424\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor us at \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, this type of system becomes particularly relevant when a homeowner in \u003cstrong\u003eMontreal, Laval, Longueuil, on the South Shore or the North Shore\u003c\/strong\u003e wants to cool and heat two large zones without installing two separate outdoor units.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen combination is associated with the following specifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-48HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommercial capacity: 48,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConfiguration shown: 2 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTwo 24,000 BTU indoor units\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735320\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR® Cold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630067\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2-4: 11\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum heating temperature: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSenville documentation confirms the \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e, the use of R-454B, 208\/230 V power supply, and a multi-zone design capable of managing \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e depending on the configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eOne essential clarification: the outdoor unit can support several configurations, but this article focuses on two zones.\u003c\/h3\u003e\n\u003cp\u003eThe brochure states that the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e can support \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis does not mean that the configuration presented here includes six indoor units. The version documented on the first page does include \u003cstrong\u003etwo 24,000 BTU units each\u003c\/strong\u003e, for a 24,000 + 24,000 BTU combination. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a homeowner, this distinction is important.\u003c\/p\u003e\n\u003cp\u003eA multi-zone outdoor unit is a platform capable of supporting different combinations. However, the final performance depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eof the number of installed heads;\u003c\/li\u003e\n\u003cli\u003eof their individual capacity;\u003c\/li\u003e\n\u003cli\u003eof the line-set length;\u003c\/li\u003e\n\u003cli\u003eof the zones’ simultaneous needs;\u003c\/li\u003e\n\u003cli\u003eof the certified combination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is therefore essential to always compare the \u003cstrong\u003ecomplete combination\u003c\/strong\u003e, not just the outdoor unit number.\u003c\/p\u003e\n\u003ch3\u003eTwo 24,000 BTU heads: for what type of building is this configuration suitable?\u003c\/h3\u003e\n\u003cp\u003eTwo \u003cstrong\u003e24,000 BTU\u003c\/strong\u003e wall-mounted units represent substantial capacity.\u003c\/p\u003e\n\u003cp\u003eThis combination may be interesting, for example, for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etwo relatively open large floors;\u003c\/li\u003e\n\u003cli\u003ea large ground floor and basement;\u003c\/li\u003e\n\u003cli\u003etwo large commercial zones;\u003c\/li\u003e\n\u003cli\u003etwo independent residences or sections when the technical configuration allows it;\u003c\/li\u003e\n\u003cli\u003ea large residential space divided into two thermal zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSenville generally recommends this 48,000 BTU version for approximately \u003cstrong\u003e2,000 to 2,500 sq. ft.\u003c\/strong\u003e, while presenting it as a solution for multiple zones or large spaces. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe consider this area only a general indication.\u003c\/p\u003e\n\u003cp\u003eA 2,200 sq. ft. property in \u003cstrong\u003eBoucherville\u003c\/strong\u003e with recent insulation and an open layout may have a completely different load from an older duplex in \u003cstrong\u003eMontreal\u003c\/strong\u003e of a similar size.\u003c\/p\u003e\n\u003cp\u003eFor a \u003cstrong\u003emulti-zone HVAC installation\u003c\/strong\u003e, we must consider, among other factors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ewindows;\u003c\/li\u003e\n\u003cli\u003esolar exposure;\u003c\/li\u003e\n\u003cli\u003eceilings;\u003c\/li\u003e\n\u003cli\u003eexterior walls;\u003c\/li\u003e\n\u003cli\u003enatural air circulation;\u003c\/li\u003e\n\u003cli\u003ethe actual separation between the zones;\u003c\/li\u003e\n\u003cli\u003ewinter heating needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA common mistake is to simply add 24,000 + 24,000 and assume that each head will always have 24,000 BTU\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system operates differently from two independent heat pumps.\u003c\/p\u003e\n\u003cp\u003eThe two indoor units share the same outdoor unit and compressor. When both zones require substantial capacity simultaneously, the outdoor unit must distribute its output.\u003c\/p\u003e\n\u003cp\u003eThe brochure lists a nominal cooling capacity of \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e for the system, with an operating range of \u003cstrong\u003e12,000 to 57,000 BTU\/h\u003c\/strong\u003e. In heating mode, the nominal capacity is \u003cstrong\u003e49,000 BTU\/h\u003c\/strong\u003e, with modulation from \u003cstrong\u003e13,000 to 57,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThat is precisely why we do not present a multi-zone system as two completely independent single units from a refrigeration standpoint.\u003c\/p\u003e\n\u003cp\u003eThe temperatures can be adjusted separately in the two spaces, but the units share the available outdoor capacity.\u003c\/p\u003e\n\u003ch3\u003eSEER2 23: outstanding efficiency for a system of this capacity\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e is particularly noteworthy for a 48,000 BTU multi-zone system.\u003c\/p\u003e\n\u003cp\u003eThe brochure also confirms:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2-4: 11\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2-5: 9\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal COP: 3.7\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a property that frequently uses both zones during the summer, seasonal efficiency becomes important because a high-capacity system can accumulate many operating hours.\u003c\/p\u003e\n\u003cp\u003eThe inverter also allows modulation. It is therefore not a unit doomed to constantly produce 48,000 BTU.\u003c\/p\u003e\n\u003cp\u003eThe cooling range, which can go down to \u003cstrong\u003e12,000 BTU\/h\u003c\/strong\u003e, allows the system to adjust its output when only one zone requires little energy or when overall needs decrease.\u003c\/p\u003e\n\u003ch3\u003eWhy modulation is even more important in a 2-zone heat pump\u003c\/h3\u003e\n\u003cp\u003eLet’s consider a simple configuration.\u003c\/p\u003e\n\u003cp\u003eThe first head serves a large living room-kitchen where several people are present. The second serves a floor that has become almost unused for a few hours.\u003c\/p\u003e\n\u003cp\u003eThe needs are not identical.\u003c\/p\u003e\n\u003cp\u003eThe inverter compressor adjusts its output to meet the overall load rather than operating solely in on-off mode.\u003c\/p\u003e\n\u003cp\u003eIn a properly sized installation, this can improve:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etemperature stability;\u003c\/li\u003e\n\u003cli\u003epartial-load consumption;\u003c\/li\u003e\n\u003cli\u003ethe comfort of both zones;\u003c\/li\u003e\n\u003cli\u003ethe acoustic performance of the indoor units;\u003c\/li\u003e\n\u003cli\u003ethe efficiency during periods when a single zone demands a lot of energy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHeating down to -30 °C: low-temperature capacities must be considered separately\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications provide three particularly useful operating points:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e45,000 BTU\/h at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e47,000 BTU\/h at -15 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum 24,600 BTU\/h at -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe stated COP is approximately \u003cstrong\u003e2.6 at -8 °C\u003c\/strong\u003e and \u003cstrong\u003e1.27 at the maximum operating point at -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville’s documentation confirms a minimum heating temperature of \u003cstrong\u003e-22 °F, or -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical conclusion is important: \u003cstrong\u003eoperating down to -30 °C does not mean maintaining 48,000 BTU of heating capacity down to -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt this extreme temperature, the AirGreen specifications indicate a maximum capacity of approximately \u003cstrong\u003e24,600 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a large home in \u003cstrong\u003eGreater Montreal\u003c\/strong\u003e, this difference must be incorporated into the heating calculation.\u003c\/p\u003e\n\u003ch3\u003eAt -15 °C, the capacity remains very high\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e47,000 BTU at -15 °C\u003c\/strong\u003e listed on the AirGreen specifications sheet is particularly interesting.\u003c\/p\u003e\n\u003cp\u003eAt this temperature, the available capacity remains close to the system’s overall rated capacity.\u003c\/p\u003e\n\u003cp\u003eThis is precisely the type of data we examine at AirGreen when a customer wants to use their heat pump as the primary heating source for a large portion of the winter.\u003c\/p\u003e\n\u003cp\u003eThe relevant question is not merely: “Down to what temperature does it operate?”\u003c\/p\u003e\n\u003cp\u003eWe look instead at:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many BTUs does the system produce at the temperature when the house actually needs them?\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eCold Climate and ENERGY STAR®\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand the brochure also presents the series as ENERGY STAR certified and designed to provide heating down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a Quebec homeowner, this certification may be relevant both to the technical choice and to certain financial assistance programs.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen listing associates this combination with reference \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e and identifier \u003cstrong\u003eENERGY STAR 3630067\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eAdvertised provincial rebate: $5,400\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen listing currently indicates a \u003cstrong\u003e$5,400 provincial rebate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a multi-zone project, an amount of this magnitude can obviously significantly change the installation’s net cost.\u003c\/p\u003e\n\u003cp\u003eEligibility must nevertheless be confirmed when the quote is prepared, as programs, amounts, and criteria may be revised.\u003c\/p\u003e\n\u003cp\u003eWe specifically verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe exact models;\u003c\/li\u003e\n\u003cli\u003eAHRI;\u003c\/li\u003e\n\u003cli\u003eCold Climate certification;\u003c\/li\u003e\n\u003cli\u003ethe type of building;\u003c\/li\u003e\n\u003cli\u003ethe rules in effect at the time of the project.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA system commercially called “Senville 48,000 BTU” is not sufficient to validate a rebate. \u003cstrong\u003eThe specific certified combination is decisive.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eTwo-zone installation: what we check before recommending the SENVILLE SENA-48HF-MOA\u003c\/h2\u003e\n\u003ch3\u003eA substantial outdoor unit weighing nearly 250 lb\u003c\/h3\u003e\n\u003cp\u003eThe brochure lists the following dimensions for the outdoor unit:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.48 in × 16.34 in × 52.48 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eweighing approximately \u003cstrong\u003e246.47 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe are therefore not talking about a small conventional wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eIts installation requires:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea suitable support;\u003c\/li\u003e\n\u003cli\u003ean accessible location;\u003c\/li\u003e\n\u003cli\u003eadequate clearances;\u003c\/li\u003e\n\u003cli\u003especial attention to snow accumulation;\u003c\/li\u003e\n\u003cli\u003ea well-planned refrigerant line route.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt several \u003cstrong\u003eMontreal\u003c\/strong\u003e properties, outdoor space may be limited. On the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e or \u003cstrong\u003eNorth Shore\u003c\/strong\u003e, we may sometimes have more flexibility, but the unit must always remain accessible for servicing.\u003c\/p\u003e\n\u003ch3\u003e4,503 CFM outdoors: do not enclose the condenser\u003c\/h3\u003e\n\u003cp\u003eThe documentation indicates a maximum outdoor airflow of \u003cstrong\u003e4,502.8 CFM\u003c\/strong\u003e and a sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA unit capable of moving more than 4,500 cubic feet of air per minute should not be enclosed behind overly tight decorative panels or placed in a corner where discharged air immediately returns toward the coil.\u003c\/p\u003e\n\u003cp\u003ePoor airflow around the outdoor unit can affect its heat exchange and operation.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor sound level of 65 dB(A) warrants careful consideration of the location\u003c\/h3\u003e\n\u003cp\u003eThe stated value is \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a large multi-zone unit, the following must therefore be taken into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efrom the primary bedroom;\u003c\/li\u003e\n\u003cli\u003efrom the windows;\u003c\/li\u003e\n\u003cli\u003efrom the terrace;\u003c\/li\u003e\n\u003cli\u003eneighbors;\u003c\/li\u003e\n\u003cli\u003ewalls that may reflect sound;\u003c\/li\u003e\n\u003cli\u003emunicipal regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA very short piping run is not necessarily the best installation if it positions the condenser directly beneath a bedroom window.\u003c\/p\u003e\n\u003ch3\u003eR-454B: 151.68 oz charge and impressive 150-foot precharge\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates a charge of \u003cstrong\u003e151.68 oz of R-454B\u003c\/strong\u003e as well as a \u003cstrong\u003especified precharge for up to 150 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also specifies that the system is precharged for a total of up to \u003cstrong\u003e150 feet of piping\u003c\/strong\u003e and that professional installation is required. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis capacity is particularly interesting in a multi-zone project because the two indoor units may be far from the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean that we should unnecessarily use all of that length.\u003c\/p\u003e\n\u003cp\u003eThe more complex the route, the more we need to consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003epressure losses;\u003c\/li\u003e\n\u003cli\u003ethe total amount of copper;\u003c\/li\u003e\n\u003cli\u003eheight differences;\u003c\/li\u003e\n\u003cli\u003epassages through the walls;\u003c\/li\u003e\n\u003cli\u003efuture access;\u003c\/li\u003e\n\u003cli\u003ethe aesthetics of the line-hide covers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3\/8 in – 5\/8 in piping: pay attention to the exact branch configuration\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate a main pipe size of \u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHowever, on a multi-zone system, we must always consult the exact combination diagram to determine the applicable diameters for each indoor unit and any distribution fittings.\u003c\/p\u003e\n\u003cp\u003eWe avoid treating the diameter shown on the outdoor unit’s specifications as complete installation instructions for both branches.\u003c\/p\u003e\n\u003ch3\u003eInstalling two indoor units: drainage can become more complex than the refrigerant piping\u003c\/h3\u003e\n\u003cp\u003eA 2-zone heat pump also means \u003cstrong\u003etwo indoor units producing condensate\u003c\/strong\u003e in cooling mode.\u003c\/p\u003e\n\u003cp\u003eEach one requires adequate drainage.\u003c\/p\u003e\n\u003cp\u003eIn one project, we may sometimes route both drains by gravity. In other configurations, one indoor unit is located where the natural slope is insufficient, and an additional solution must be planned.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore evaluate for each zone:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe available wall;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant line route;\u003c\/li\u003e\n\u003cli\u003ethe drain;\u003c\/li\u003e\n\u003cli\u003eelectrical access;\u003c\/li\u003e\n\u003cli\u003ethe direction of airflow;\u003c\/li\u003e\n\u003cli\u003efuture maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAutomatic vertical and horizontal louvers\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003eautomatic vertical and horizontal louvers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn a 24,000 BTU indoor unit, this feature is useful for distributing air throughout a large area.\u003c\/p\u003e\n\u003cp\u003eBut it cannot correct poor placement.\u003c\/p\u003e\n\u003cp\u003eIdeally, we aim to orient each unit toward the depth of its space, without blowing directly onto a table, sofa, or bed.\u003c\/p\u003e\n\u003cp\u003eIn a multi-zone system, each indoor unit must be considered a complete installation in its own right.\u003c\/p\u003e\n\u003ch3\u003eWiFi included: particularly relevant for two zones\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWiFi is included\u003c\/strong\u003e according to the AirGreen product sheet, and the brochure confirms smart app-based control. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a 2-zone installation, this feature becomes genuinely practical.\u003c\/p\u003e\n\u003cp\u003eFor example, an owner can keep a main zone at a comfortable temperature while lowering the setpoint in a space used less often.\u003c\/p\u003e\n\u003cp\u003eThe brochure indicates that the package includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 indoor units of 24,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eone outdoor unit;\u003c\/li\u003e\n\u003cli\u003ethe wireless remote controls;\u003c\/li\u003e\n\u003cli\u003ea USB WiFi kit;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003etwo 16-foot installation kits\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethe connection harnesses;\u003c\/li\u003e\n\u003cli\u003ethe installation manual. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical requirements: MCA 37 A and MOP 40 A\u003c\/h3\u003e\n\u003cp\u003eThe documentation specifies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003emaximum protection: 40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe power supply is \u003cstrong\u003e208\/230 V single-phase, 60 Hz\u003c\/strong\u003e, with a voltage range of 187 to 253 V. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBefore installation, we must therefore confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe electrical panel;\u003c\/li\u003e\n\u003cli\u003ethe available capacity;\u003c\/li\u003e\n\u003cli\u003ethe circuit breaker;\u003c\/li\u003e\n\u003cli\u003ethe conductor size;\u003c\/li\u003e\n\u003cli\u003ethe outdoor disconnect switch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a 48,000 BTU heat pump, this verification must be completed before finalizing the project, not on the day of installation.\u003c\/p\u003e\n\u003ch3\u003eA practical example: two large floors with different usage patterns\u003c\/h3\u003e\n\u003cp\u003eLet’s take an example configuration, solely to illustrate how the system works.\u003c\/p\u003e\n\u003cp\u003eA property has a large open-plan ground floor and a finished basement of a similar size.\u003c\/p\u003e\n\u003cp\u003eThe ground floor is occupied all day, while the basement is mainly used in the evening.\u003c\/p\u003e\n\u003cp\u003eWith a single heat pump and one indoor head, distributing air evenly between the two levels would be difficult.\u003c\/p\u003e\n\u003cp\u003eWith two independent indoor units:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eeach floor receives its own air distribution;\u003c\/li\u003e\n\u003cli\u003ethe settings can be adjusted separately;\u003c\/li\u003e\n\u003cli\u003ethe unused zone can operate at a lower intensity;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit remains single.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is precisely the type of situation in which the \u003cstrong\u003e2-zone\u003c\/strong\u003e approach becomes attractive.\u003c\/p\u003e\n\u003ch3\u003eAnother scenario in which two outdoor units might be preferable\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system is not automatically the best solution.\u003c\/p\u003e\n\u003cp\u003eIf the two spaces are very far apart or the owner wants complete redundancy, two independent heat pumps may sometimes be preferable.\u003c\/p\u003e\n\u003cp\u003eWith two separate units, a failure of one outdoor unit does not disable both zones.\u003c\/p\u003e\n\u003cp\u003eA multi-zone system instead offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea single outdoor unit;\u003c\/li\u003e\n\u003cli\u003ea simpler outdoor appearance;\u003c\/li\u003e\n\u003cli\u003ea centralized system power supply;\u003c\/li\u003e\n\u003cli\u003emultiple indoor zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe choice therefore depends on the building and the owner’s priorities.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a discrepancy that needs to be clarified\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a manufacturer’s warranty:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-year compressor – 10-year parts – 0-year labor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ewith an additional warranty available.\u003c\/p\u003e\n\u003cp\u003eHowever, the attached Senville brochure mentions \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table also repeats \u003cstrong\u003e10 Years Compressor \/ 5 Years Parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference should be verified before final publication or before the sale. There may be an extension associated with registration or AirGreen’s commercial terms, but the brochure alone does not confirm 10-year parts coverage.\u003c\/p\u003e\n\u003cp\u003eFor us, the exact terms must be specified in the quote.\u003c\/p\u003e\n\u003ch3\u003eSelf-diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eThe documentation mentions \u003cstrong\u003ebuilt-in diagnostics and leak detection\u003c\/strong\u003e functions designed to facilitate the identification of certain problems. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a multi-zone system, this feature is useful, but it obviously does not replace \u003cstrong\u003eHVAC maintenance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo indoor units also mean:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etwo filter assemblies;\u003c\/li\u003e\n\u003cli\u003etwo evaporators;\u003c\/li\u003e\n\u003cli\u003etwo drains;\u003c\/li\u003e\n\u003cli\u003etwo zones to inspect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe owner must therefore plan maintenance suited to the complete configuration.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a 48,000 BTU SENVILLE 2-zone heat pump\u003c\/h3\u003e\n\u003cp\u003eA multi-zone installation of this capacity must be planned as a complete system, not as “two heads connected to one machine.”\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we specifically check:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe heat load of each zone;\u003c\/li\u003e\n\u003cli\u003ethe proper capacity of each indoor unit;\u003c\/li\u003e\n\u003cli\u003ethe compatibility of the combination with the outdoor unit;\u003c\/li\u003e\n\u003cli\u003ethe routing of each refrigerant line;\u003c\/li\u003e\n\u003cli\u003etotal lengths;\u003c\/li\u003e\n\u003cli\u003eheight differences;\u003c\/li\u003e\n\u003cli\u003edrainage for each unit;\u003c\/li\u003e\n\u003cli\u003ethe 208\/230 V power supply;\u003c\/li\u003e\n\u003cli\u003ethe outdoor location;\u003c\/li\u003e\n\u003cli\u003eclearances and noise;\u003c\/li\u003e\n\u003cli\u003eeligibility for available programs;\u003c\/li\u003e\n\u003cli\u003efuture access for maintenance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWe serve \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e for single-zone and multi-zone heat pump projects.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-48HF-MOA R454B\u003c\/strong\u003e offers a particularly interesting technical package: \u003cstrong\u003e23 SEER2, Cold Climate operation down to -30 °C, modulation from 12,000 to 57,000 BTU in cooling, up to 57,000 BTU in heating, WiFi, ENERGY STAR, and the ability to manage multiple zones with a single outdoor unit\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the configuration presented here, the main advantage is clear: \u003cstrong\u003etwo large 24,000 BTU zones each, with a single 48,000 BTU outdoor unit\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen to get a quote for the SENVILLE R454B 48,000 BTU 2-zone heat pump, check whether the 24,000 + 24,000 BTU combination is suitable for your building, and schedule a complete HVAC installation in Montreal, Laval, Longueuil, the South Shore, or the North Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"24 + 24","offer_id":56200896217380,"sku":"SENA-48HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_2_ZONES_SENVILLE_R454B_48000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057736"},{"product_id":"thermopompe-3-zones-senville-r454b-18000-btu","title":"SENVILLE R454B 3-Zone Heat Pump | 18000 BTU","description":"\u003ch2\u003eA compact multi-zone platform for cooling and heating several rooms with a single outdoor unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 18,000 BTU 3-Zone Heat Pump\u003c\/strong\u003e addresses a common problem in homes, condos, and small buildings in Greater Montreal: several rooms need independent temperature control, but the owner does not want to multiply outdoor units on the façade, balcony, or side of the building.\u003c\/p\u003e\n\u003cp\u003eWith outdoor unit \u003cstrong\u003eSENA-18HF-MOA\u003c\/strong\u003e, Senville offers a multi-zone platform that can support \u003cstrong\u003etwo to three zones\u003c\/strong\u003e, depending on the configuration selected. The attached technical documentation precisely confirms this “2-3 zone” connection capacity, a single-phase 208\/230 V power supply, and ductless heat pump technology. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, this type of system is particularly relevant for certain projects in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e, where the rooms are sufficiently separated that a single wall-mounted unit cannot distribute air properly. A second-floor bedroom, an enclosed office, and a living area on the ground floor may have very different needs at the same time.\u003c\/p\u003e\n\u003cp\u003eRather than trying to circulate cold or warm air through multiple hallways and doors, a multi-zone configuration places an indoor unit directly in the areas that need it.\u003c\/p\u003e\n\u003cp\u003eThe combination presented by AirGreen uses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-18HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735311\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eClass capacity: 18,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 25.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 15.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 4: 10.4\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eheating advertised down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e220 V\u003c\/strong\u003e power supply\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: approximately 18 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 20 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure also confirms an SEER2 of \u003cstrong\u003e25\u003c\/strong\u003e, an EER2 of \u003cstrong\u003e15\u003c\/strong\u003e and an HSPF2-4 of \u003cstrong\u003e10,4\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eOne essential clarification: the brochure illustrates two zones, but the outdoor unit supports up to three zones\u003c\/h3\u003e\n\u003cp\u003eThe attached documentation presents a commercial configuration on the first page, \u003cstrong\u003eDual Zone SENA-18HF\/D\u003c\/strong\u003e, with two 9,000 BTU indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePage 4 is nevertheless more important for understanding the outdoor unit itself: model \u003cstrong\u003eSENA-18HF-MOA\u003c\/strong\u003e is listed as compatible with \u003cstrong\u003e2 to 3 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis means that the brochure shows a particular combination, but the outdoor unit can be used in a three-zone configuration when the selected indoor units are compatible.\u003c\/p\u003e\n\u003cp\u003eFor an AirGreen installation, we therefore always verify the exact combination before ordering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emodels of the three indoor units;\u003c\/li\u003e\n\u003cli\u003erated capacities of each;\u003c\/li\u003e\n\u003cli\u003ecompatibility with the SENA-18HF-MOA;\u003c\/li\u003e\n\u003cli\u003emanufacturer’s combination limitations;\u003c\/li\u003e\n\u003cli\u003etotal capacity actually available;\u003c\/li\u003e\n\u003cli\u003eAHRI number applicable to the selected configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is particularly important in a multi-zone system, because three indoor units do not mean that each one can produce its maximum rated capacity simultaneously without limitation.\u003c\/p\u003e\n\u003ch3\u003eWhy 18,000 BTUs can serve three zones\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system should be understood as \u003cstrong\u003eshared outdoor capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure lists the following for the SENA-18HF-MOA:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erated cooling capacity: \u003cstrong\u003e19,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling range: \u003cstrong\u003e5,400 to 28,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003erated heating capacity: \u003cstrong\u003e20,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating range: \u003cstrong\u003e5,700 to 27,000 BTU\/h\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis modulation explains why an 18,000-BTU-class outdoor unit can supply several small zones.\u003c\/p\u003e\n\u003cp\u003eLet’s take a residential configuration as an example: three bedrooms or small spaces do not necessarily require their full capacity at the same time. A bedroom exposed to the sun may require substantial cooling in the late afternoon, while another north-facing zone requires very little.\u003c\/p\u003e\n\u003cp\u003eThe inverter compressor then distributes the available capacity according to the system’s demands.\u003c\/p\u003e\n\u003cp\u003eThe right question is therefore not simply “how many BTUs do the indoor heads provide in total?” We must also consider \u003cstrong\u003ehow the zones will actually be used\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhen three zones make more sense than a single large head\u003c\/h3\u003e\n\u003cp\u003eIn our \u003cstrong\u003emulti-zone heat pump projects in Montreal and Greater Montreal\u003c\/strong\u003e, we often encounter buildings where the total area does not seem particularly large, but where the layout makes a single head ineffective.\u003c\/p\u003e\n\u003cp\u003eA typical example is a floor comprising:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etwo closed bedrooms;\u003c\/li\u003e\n\u003cli\u003ea small office;\u003c\/li\u003e\n\u003cli\u003ea central hallway.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstalling a single high-capacity heat pump in the hallway does not guarantee comfort in all three rooms. As soon as the doors are closed, air circulation becomes limited.\u003c\/p\u003e\n\u003cp\u003eIn this type of configuration, three small indoor units connected to a single outdoor unit can provide much more precise control.\u003c\/p\u003e\n\u003ch3\u003eOne important advantage: each zone can have its own setpoint\u003c\/h3\u003e\n\u003cp\u003eThe main benefit of a \u003cstrong\u003e3-zone heat pump\u003c\/strong\u003e is not simply having three air handlers.\u003c\/p\u003e\n\u003cp\u003eIt is the ability to adapt comfort to each room.\u003c\/p\u003e\n\u003cp\u003eA bedroom can be set to a different temperature than the office. An unoccupied room can operate at a more economical setpoint. The area used in the evening can receive more heating or cooling.\u003c\/p\u003e\n\u003cp\u003eThis avoids treating the entire house as a single thermal zone when the needs differ.\u003c\/p\u003e\n\u003cp\u003eHowever, an important characteristic of multizone systems must be respected: indoor units connected to the same outdoor unit generally have to operate in a compatible mode. With a conventional residential multizone system, one should not expect to heat one room while another simultaneously requests cooling.\u003c\/p\u003e\n\u003ch3\u003eSEER2 of 25: high seasonal efficiency\u003c\/h3\u003e\n\u003cp\u003eThe brochure gives the SENA-18HF-MOA a \u003cstrong\u003eSEER2 of 25\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 15\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese values are particularly interesting in a multizone system, where the compressor must constantly adjust its speed to meet the needs of several spaces.\u003c\/p\u003e\n\u003cp\u003eSenville also presents this product as ENERGY STAR certified and advertises up to 50% energy savings under certain comparison conditions. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we prefer never to turn this type of percentage into a promise about the electricity bill. Actual consumption depends greatly on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe previous system;\u003c\/li\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ethe requested temperatures;\u003c\/li\u003e\n\u003cli\u003eschedules;\u003c\/li\u003e\n\u003cli\u003ethe number of active zones;\u003c\/li\u003e\n\u003cli\u003eoutdoor temperatures;\u003c\/li\u003e\n\u003cli\u003ethe use of supplemental electric heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCertified ratings such as \u003cstrong\u003eSEER2, EER2, and HSPF2\u003c\/strong\u003e remain the best tools for objectively comparing several systems.\u003c\/p\u003e\n\u003ch3\u003eHSPF2 of 10.4 and operation down to -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe SENA-18HF-MOA is presented as a \u003cstrong\u003ecold-climate heat pump\u003c\/strong\u003e, with heating operation advertised down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. The brochure confirms this minimum outdoor temperature limit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAirGreen’s data indicate approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20,000 BTU\/h at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19,000 BTU\/h at -15 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eup to \u003cstrong\u003e10,000 BTU\/h at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe COP listed in the specifications is approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.53 at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e1.3 at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis shows why it is necessary to analyze more than just the “-30 °C” mention.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the unit can still produce heat, but its available capacity is significantly lower than at milder temperatures.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner in \u003cstrong\u003eLaval\u003c\/strong\u003e, \u003cstrong\u003eLongueuil\u003c\/strong\u003e, \u003cstrong\u003eMontréal\u003c\/strong\u003e, or the \u003cstrong\u003eNorth Shore\u003c\/strong\u003e, this means that supplemental heating may still be necessary during periods of extreme cold, depending on the building’s heat loss.\u003c\/p\u003e\n\u003ch3\u003eMultizone heating adds another dimension to the calculation\u003c\/h3\u003e\n\u003cp\u003eWith a single-zone system, we mainly compare the unit’s capacity with the heating load of a space.\u003c\/p\u003e\n\u003cp\u003eIn a three-zone system, simultaneous demand must also be considered.\u003c\/p\u003e\n\u003cp\u003eSuppose three rooms that each require several thousand BTUs on a very cold day. The sum of their needs may exceed the capacity the outdoor unit can provide at that specific moment.\u003c\/p\u003e\n\u003cp\u003eThat is why a serious multi-zone selection does not simply consist of adding three indoor units until reaching a number that seems acceptable.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we instead examine:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe needs of each zone;\u003c\/li\u003e\n\u003cli\u003esimultaneous demand;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit's low-temperature capacity;\u003c\/li\u003e\n\u003cli\u003ehow occupants use each room;\u003c\/li\u003e\n\u003cli\u003ethe presence of supplemental heating.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWiFi included: particularly useful with multiple zones\u003c\/h3\u003e\n\u003cp\u003eSenville indicates smart app control and Alexa integration. The system allows users to create schedules and change settings remotely. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a three-zone system, this feature is more useful than on a simple single-zone system.\u003c\/p\u003e\n\u003cp\u003eFor example, a homeowner can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elower a bedroom's temperature during the day;\u003c\/li\u003e\n\u003cli\u003ekeep an office at a different setpoint;\u003c\/li\u003e\n\u003cli\u003eschedule the main living area according to occupancy hours;\u003c\/li\u003e\n\u003cli\u003eadjust a zone without going to the remote control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure also mentions a \u003cstrong\u003eUSB WiFi kit\u003c\/strong\u003e in the configuration shown. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eSelf-diagnostic and leak detection\u003c\/h3\u003e\n\u003cp\u003eThe documentation mentions an integrated \u003cstrong\u003eself-diagnostic and leak detection\u003c\/strong\u003e system. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a multi-zone system, this feature is useful because the circuit is more complex than with a single-zone system.\u003c\/p\u003e\n\u003cp\u003eIt includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emultiple refrigerant lines;\u003c\/li\u003e\n\u003cli\u003emultiple indoor units;\u003c\/li\u003e\n\u003cli\u003emore connections;\u003c\/li\u003e\n\u003cli\u003emultiple condensate drains;\u003c\/li\u003e\n\u003cli\u003emultiple electronic controls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA diagnostic code can help guide service, but it does not replace a refrigeration technician's measurements when capacity becomes insufficient or one zone behaves differently from the others.\u003c\/p\u003e\n\u003ch2\u003eWhy installing a three-zone system requires much more planning than a simple mini-split\u003c\/h2\u003e\n\u003ch3\u003eR-454B and precharge up to 75 feet according to the brochure\u003c\/h3\u003e\n\u003cp\u003eThe documentation indicates a charge of \u003cstrong\u003e78.31 oz of R-454B\u003c\/strong\u003e and a total precharge for up to \u003cstrong\u003e75 feet\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a multi-zone system, the total line length quickly becomes substantial.\u003c\/p\u003e\n\u003cp\u003eThree indoor units can be installed on three different walls, or even on different floors. We therefore need to plan:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe length of each circuit;\u003c\/li\u003e\n\u003cli\u003etotal length;\u003c\/li\u003e\n\u003cli\u003eheight differences;\u003c\/li\u003e\n\u003cli\u003edrain routing;\u003c\/li\u003e\n\u003cli\u003ecable routing;\u003c\/li\u003e\n\u003cli\u003eoutdoor line sets;\u003c\/li\u003e\n\u003cli\u003eaccess for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe fact that the system is precharged does not mean that every installation can automatically be completed without adjustment. The final charge must correspond to the actual lengths and the manufacturer's requirements.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in – 3\/8 in piping\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen listing indicates 1\/4 in – 3\/8 in piping.\u003c\/p\u003e\n\u003cp\u003eThese relatively compact dimensions make it easier to route the lines than with large central systems.\u003c\/p\u003e\n\u003cp\u003eBut in a three-zone installation, aesthetics must be considered.\u003c\/p\u003e\n\u003cp\u003eThree pairs of lines running up a façade can become much more visible than a single-zone installation. At AirGreen, we therefore try to group and organize the runs to limit the visual impact.\u003c\/p\u003e\n\u003cp\u003eOn the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, in Laval, or in Montreal's residential neighborhoods, this detail often makes a major difference in the perceived quality of the installation.\u003c\/p\u003e\n\u003ch3\u003e137 lb outdoor unit: the location must be properly prepared\u003c\/h3\u003e\n\u003cp\u003eThe brochure gives the outdoor unit's approximate dimensions as:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 × 16.14 × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs approximately \u003cstrong\u003e137.35 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe outdoor airflow can reach approximately \u003cstrong\u003e2,130.7 CFM\u003c\/strong\u003e, while the stated sound level is \u003cstrong\u003e61.5 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe must therefore select a location that takes into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow accumulation;\u003c\/li\u003e\n\u003cli\u003edrainage during defrost;\u003c\/li\u003e\n\u003cli\u003enoise;\u003c\/li\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003eneighboring properties;\u003c\/li\u003e\n\u003cli\u003ethe length of the three refrigerant line runs;\u003c\/li\u003e\n\u003cli\u003efuture access to the compressor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn outdoor location that seems convenient for the first indoor unit may make the other two runs unnecessarily long. That is why the overall routing must be planned before the first hole is drilled.\u003c\/p\u003e\n\u003ch3\u003eMCA 17.5 A and maximum protection 20 A\u003c\/h3\u003e\n\u003cp\u003eThe brochure states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 17.5 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003emaximum fuse: 20 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e power supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet rounds the MCA up to \u003cstrong\u003e18 A\u003c\/strong\u003e and also indicates an MOP of \u003cstrong\u003e20 A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a system capable of supplying up to three zones, this electrical demand remains relatively modest.\u003c\/p\u003e\n\u003cp\u003eNevertheless, the circuit must be sized according to the nameplate data and the requirements applicable to the job site.\u003c\/p\u003e\n\u003ch3\u003eThree drains, three potential problems if the route is poorly designed\u003c\/h3\u003e\n\u003cp\u003eWith three indoor units, up to three condensate drains must also be managed.\u003c\/p\u003e\n\u003cp\u003eOn site, this is just as important as the refrigerant piping.\u003c\/p\u003e\n\u003cp\u003eWhenever possible, we aim for gravity drainage with a continuous slope.\u003c\/p\u003e\n\u003cp\u003ePoor planning can lead to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eunnecessary condensate pumps;\u003c\/li\u003e\n\u003cli\u003enoise;\u003c\/li\u003e\n\u003cli\u003ebackflow;\u003c\/li\u003e\n\u003cli\u003eleaks;\u003c\/li\u003e\n\u003cli\u003eadditional maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, a small condensate pump that starts regularly can become much more disruptive than anticipated when the quote was prepared.\u003c\/p\u003e\n\u003ch3\u003eAutomatic louver control\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet indicates automatic louver control:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evertical: automatic\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ehorizontal: automatic\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis function facilitates air distribution in each room.\u003c\/p\u003e\n\u003cp\u003eHowever, it does not replace the proper placement of the indoor unit.\u003c\/p\u003e\n\u003cp\u003eIn a bedroom, we avoid having the airflow point directly at the bed whenever possible. In an office, we avoid blowing directly onto the workstation. In a living room, we instead try to use the length of the room to promote better distribution.\u003c\/p\u003e\n\u003ch3\u003eThree small zones should not be treated as one 18,000-BTU zone.\u003c\/h3\u003e\n\u003cp\u003eA common mistake when choosing a multi-zone system is to reason as if it were a single-zone system.\u003c\/p\u003e\n\u003cp\u003eThe homeowner sees “18,000 BTU” and assumes they automatically have 6,000 BTU available at all times in each of the three rooms.\u003c\/p\u003e\n\u003cp\u003eThe reality is more dynamic.\u003c\/p\u003e\n\u003cp\u003eThe compressor shares its capacity according to demand. If only one zone is operating, the system may reduce its output. If all three zones demand significant heating simultaneously, the total capacity is distributed.\u003c\/p\u003e\n\u003cp\u003eThat is why we analyze \u003cstrong\u003esimultaneous loads\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat area can this system heat and cool?\u003c\/h3\u003e\n\u003cp\u003eThe brochure associated with the SENA-18HF\/D mentions an indicative range of approximately \u003cstrong\u003e750 to 1,250 sq. ft.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis information must be interpreted cautiously in a three-zone configuration.\u003c\/p\u003e\n\u003cp\u003eA very well-insulated 1,000 sq. ft. dwelling does not have the same load as an older 1,000 sq. ft. floor with several windows and exposed walls.\u003c\/p\u003e\n\u003cp\u003eFloor area alone does not determine the right choice.\u003c\/p\u003e\n\u003cp\u003eWe consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewindow orientation;\u003c\/li\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003enumber of floors;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003enumber of occupants;\u003c\/li\u003e\n\u003cli\u003ecurrent heating system;\u003c\/li\u003e\n\u003cli\u003eparts distribution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDisplayed provincial rebate: $2,400\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet provided with the product indicates a \u003cstrong\u003e$2,400 provincial rebate\u003c\/strong\u003e for this combination.\u003c\/p\u003e\n\u003cp\u003eIt also mentions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR number \u003cstrong\u003e3630058\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure confirms ENERGY STAR certification and positions the system as a cold-climate heat pump. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, all financial assistance must be confirmed when the quote is prepared, especially for a multi-zone system where eligibility may depend on the exact combination of the outdoor unit and indoor units.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference between the AirGreen product sheet and the brochure\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labor.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe attached brochure instead indicates a standard warranty of \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table on page 5 also states \u003cstrong\u003e10 years compressor \/ 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference must be confirmed before purchase. Coverage may depend on the retailer’s program, product registration, or applicable commercial terms.\u003c\/p\u003e\n\u003ch3\u003eWhy three zones may be more attractive than three separate systems\u003c\/h3\u003e\n\u003cp\u003eThree single-zone systems would have three outdoor units.\u003c\/p\u003e\n\u003cp\u003eA multi-zone system uses only one.\u003c\/p\u003e\n\u003cp\u003eThis can reduce:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe outdoor space occupied;\u003c\/li\u003e\n\u003cli\u003ethe number of supports;\u003c\/li\u003e\n\u003cli\u003ethe visual impact;\u003c\/li\u003e\n\u003cli\u003ethe number of outdoor electrical circuits;\u003c\/li\u003e\n\u003cli\u003ethe space occupied on a balcony or along a house.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn Montreal, where outdoor space can be very limited, this advantage can sometimes be decisive.\u003c\/p\u003e\n\u003cp\u003eOn the other hand, a multi-zone system shares a single outdoor unit. A major failure of this unit can therefore affect all zones simultaneously.\u003c\/p\u003e\n\u003cp\u003eIt is a compromise to consider when making your choice.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a three-zone heat pump\u003c\/h3\u003e\n\u003cp\u003eA properly executed multi-zone installation requires more preparation than a single-zone system.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we analyze:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe load of each room;\u003c\/li\u003e\n\u003cli\u003eindoor unit combinations;\u003c\/li\u003e\n\u003cli\u003esimultaneous capacity;\u003c\/li\u003e\n\u003cli\u003elow-temperature performance;\u003c\/li\u003e\n\u003cli\u003erefrigerant line lengths;\u003c\/li\u003e\n\u003cli\u003ethe three drains;\u003c\/li\u003e\n\u003cli\u003eoutdoor routing;\u003c\/li\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003erebates;\u003c\/li\u003e\n\u003cli\u003efuture access for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe serve \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e for the installation, replacement, and maintenance of multi-zone HVAC systems.\u003c\/p\u003e\n\u003ch3\u003eOur assessment of the SENVILLE SENA-18HF-MOA\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-18HF-MOA\u003c\/strong\u003e platform brings together several features that are particularly relevant for a small multi-zone system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecompatibility with \u003cstrong\u003e2 to 3 zones\u003c\/strong\u003e according to the brochure;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e18,000 BTU\u003c\/strong\u003e capacity class;\u003c\/li\u003e\n\u003cli\u003eannounced technical cooling capacity of up to \u003cstrong\u003e28,000 BTU\/h\u003c\/strong\u003e in modulation;\u003c\/li\u003e\n\u003cli\u003emodulating heating capacity up to \u003cstrong\u003e27,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEER2 25\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEER2 15\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSPF2-4 10.4\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e refrigerant;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR;\u003c\/li\u003e\n\u003cli\u003eCold Climate;\u003c\/li\u003e\n\u003cli\u003eWiFi;\u003c\/li\u003e\n\u003cli\u003emaximum electrical protection of \u003cstrong\u003e20 A\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is particularly useful when several small rooms need to be controlled while limiting the number of outdoor units.\u003c\/p\u003e\n\u003cp\u003eHowever, the most important point remains selecting the actual combination. The attached brochure shows two 9,000 BTU indoor units, even though the SENA-18HF-MOA technical sheet confirms compatibility with up to three zones. A three-zone configuration must therefore be validated with the exact indoor models before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTo get a quote for a SENVILLE 3-zone heat pump, contact AirGreen. We can check the capacity of each room, the combination of indoor units, piping lengths, and applicable financial assistance before confirming the equipment for your property in Montreal, Laval, Longueuil, the North Shore, or the South Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120039964964,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_3_ZONES_SENVILLE_R454B_18000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057749"},{"product_id":"thermopompe-3-zones-senville-r454b-27000-btu","title":"SENVILLE R454B 3-Zone Heat Pump | 27000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eThree independent zones, one condenser and heating capacity that remains relevant even during Quebec’s coldest weather\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 3-Zone Heat Pump | 27000 BTU\u003c\/strong\u003e is intended for properties where a single wall-mounted unit cannot provide satisfactory air distribution, but installing three outdoor condensers would be unnecessarily cumbersome. For a home in \u003cstrong\u003eMontreal\u003c\/strong\u003e, a duplex in \u003cstrong\u003eLaval\u003c\/strong\u003e, a condo on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, a floor with several bedrooms in \u003cstrong\u003eLongueuil\u003c\/strong\u003e or a residence on the \u003cstrong\u003eNorth Shore\u003c\/strong\u003e, the principle is simple: three indoor zones can be controlled from a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003eThe core of this configuration is the \u003cstrong\u003eSENVILLE SENA-28HF-MOA\u003c\/strong\u003e condenser, using \u003cstrong\u003eR454B refrigerant\u003c\/strong\u003e and capable of operating in heating mode down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. For the TripleZone match that interests us here, the certified reference is \u003cstrong\u003eAHRI 215735314\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis AHRI number is particularly important because the same SENA-28HF-MOA condenser can be used in several multi-zone configurations. The AHRI certificate for the TripleZone match specifically indicates \u003cstrong\u003e27,000 BTU\/h for cooling, 23.0 SEER2, 12.5 EER2, 27,000 BTU\/h nominal heating capacity and 10.5 HSPF2 for Region IV\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we consider this distinction essential. A customer searching only for “SENA-28HF-MOA” online can easily come across a DoubleZone, TripleZone or QuadZone listing and find slightly different figures. These are not necessarily errors: \u003cstrong\u003ethe certified efficiency depends on the exact match between the outdoor unit and the indoor units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eAn important clarification about the attached brochure: same condenser, different configuration\u003c\/h3\u003e\n\u003cp\u003eThe documentation provided with this listing clearly illustrates why you need to look beyond the condenser number.\u003c\/p\u003e\n\u003cp\u003eThe attached brochure shows the \u003cstrong\u003eSENA-28HF-MOA in a DoubleZone configuration\u003c\/strong\u003e, with two 12,000 BTU indoor units. It also indicates that this outdoor platform can support \u003cstrong\u003e2 to 4 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor this DoubleZone configuration, the brochure lists 28,000 BTU and an efficiency rating of 23.8. For the \u003cstrong\u003eTripleZone configuration covered in this article\u003c\/strong\u003e, AHRI match 215735314 is instead certified at \u003cstrong\u003e27,000 BTU and 23.0 SEER2\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also officially markets this platform in a \u003cstrong\u003eTri-Zone\u003c\/strong\u003e configuration, with three indoor units, a nominal capacity of 27,000 BTU and an efficiency rating of 23 SEER2. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis distinction helps avoid a common error when comparing multi-zone heat pumps: mixing data from the same condenser used with different combinations of indoor units.\u003c\/p\u003e\n\u003ch3\u003eThe main features of the TripleZone configuration\u003c\/h3\u003e\n\u003cp\u003eFor the pairing presented here, we are focusing in particular on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e3 indoor zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-28HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735314\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCertified cooling capacity: 27,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated heating: 27,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -8 °C: 30,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -15 °C: 27,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum capacity indicated at -30 °C: 14,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP at -8 °C: approximately 2.36\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP at -30 °C: approximately 1.26\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum heating temperature: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR Cold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630061\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum protection: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: approximately 61 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor dimensions: 37.24 × 16.14 × 31.89 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSenville’s platform documentation also confirms a minimum operating temperature of \u003cstrong\u003e-30 °C\u003c\/strong\u003e, a 120.61 oz R454B charge, a 208\/230 V power supply, an MCA of 30 A, and a maximum protection of 35 A. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThree zones do not mean three completely independent heat pumps\u003c\/h3\u003e\n\u003cp\u003eA TripleZone heat pump has three indoor units, but they all share the same outdoor compressor.\u003c\/p\u003e\n\u003cp\u003eEach zone can have:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eits own setpoint temperature;\u003c\/li\u003e\n\u003cli\u003eits own fan speed;\u003c\/li\u003e\n\u003cli\u003eits own schedule;\u003c\/li\u003e\n\u003cli\u003eits own location;\u003c\/li\u003e\n\u003cli\u003eits own airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it possible, for example, to install one head in the primary bedroom, a second in an office, and a third in the living area.\u003c\/p\u003e\n\u003cp\u003eHowever, all available capacity comes from the \u003cstrong\u003esame SENA-28HF-MOA condenser\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is an important distinction in our sizing work at AirGreen. We do not calculate three rooms separately and then simply add three BTU figures without considering how the system performs as a whole.\u003c\/p\u003e\n\u003cp\u003eSimultaneous needs matter.\u003c\/p\u003e\n\u003cp\u003eA heavily glazed south-facing living room may require substantial cooling at 4 p.m., while a north-facing bedroom may require very little. Conversely, a winter night can create high demand in several zones at the same time.\u003c\/p\u003e\n\u003cp\u003eThe Inverter technology then adjusts the compressor’s operation and distributes its available capacity among the units that need it.\u003c\/p\u003e\n\u003ch3\u003eA modulation range suited to multi-zone systems\u003c\/h3\u003e\n\u003cp\u003eSenville’s current TripleZone page indicates an approximate cooling range of \u003cstrong\u003e7,200 to 37,000 BTU\/h\u003c\/strong\u003e and a heating range of approximately \u003cstrong\u003e8,400 to 36,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is particularly useful in a three-zone installation.\u003c\/p\u003e\n\u003cp\u003eA multi-zone heat pump almost never operates with exactly the same demand in all three rooms.\u003c\/p\u003e\n\u003cp\u003eIn a home in \u003cstrong\u003eBoucherville\u003c\/strong\u003e, for example, the ground floor may receive plenty of sunlight during the day while two upstairs bedrooms are already comfortable. The system can adjust its operation rather than treating all three zones identically.\u003c\/p\u003e\n\u003cp\u003eThis is one of the main advantages of a properly sized multi-zone system: \u003cstrong\u003ewe bring heating and cooling output closer to the actual needs of each space\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e23 SEER2: high efficiency for a three-zone configuration\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e23.0 SEER2\u003c\/strong\u003e rating deserves particular attention.\u003c\/p\u003e\n\u003cp\u003eA multi-split system involves more piping and must distribute its capacity among several indoor units. Achieving seasonal efficiency of this magnitude on a TripleZone system is therefore a notable advantage.\u003c\/p\u003e\n\u003cp\u003eThe AHRI certificate precisely confirms this \u003cstrong\u003e23.0 SEER2\u003c\/strong\u003e for pairing 215735314. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also presents its Tri-Zone system as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e-certified, with smart control and heating down to -30 °C. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNevertheless, we avoid turning this figure into a promise of annual savings.\u003c\/p\u003e\n\u003cp\u003eTwo installations using exactly the same heat pump can show very different energy consumption.\u003c\/p\u003e\n\u003cp\u003eThe most important factors remain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003esolar exposure;\u003c\/li\u003e\n\u003cli\u003ethe requested temperature;\u003c\/li\u003e\n\u003cli\u003eactual use of the three zones;\u003c\/li\u003e\n\u003cli\u003ewindow quality;\u003c\/li\u003e\n\u003cli\u003eair infiltration;\u003c\/li\u003e\n\u003cli\u003ethe length of the lines;\u003c\/li\u003e\n\u003cli\u003ethe sizing of each indoor unit;\u003c\/li\u003e\n\u003cli\u003ethe quality of the commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e30,000 BTU at -8 °C: why this figure is particularly interesting in Quebec\u003c\/h3\u003e\n\u003cp\u003eThe system’s nominal capacity is 27,000 BTU, but the model data indicate approximately \u003cstrong\u003e30,000 BTU\/h of heating at -8 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis may seem counterintuitive, but an inverter compressor can be certified at different operating points with capacities that do not necessarily follow a simple downward line.\u003c\/p\u003e\n\u003cp\u003eAt -15 °C, the indicated capacity remains approximately \u003cstrong\u003e27,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a TripleZone heat pump, maintaining this capacity is particularly interesting, since several zones may call for heating simultaneously.\u003c\/p\u003e\n\u003cp\u003eIt is precisely at these temperatures of -8 °C to -15 °C that we can truly assess a heat pump’s potential to reduce the operation of electric baseboard heaters in a Greater Montreal home.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C, the unit still operates, but its capacity is different\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE is designed for heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. The platform brochure confirms this outdoor limit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, the maximum published capacity at this temperature is approximately \u003cstrong\u003e14,000 BTU\/h\u003c\/strong\u003e, with a COP of around \u003cstrong\u003e1.26\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis means two things.\u003c\/p\u003e\n\u003cp\u003eFirst, the system remains capable of producing heat under conditions in which many standard heat pumps are no longer designed to operate.\u003c\/p\u003e\n\u003cp\u003eSecond, you must never confuse “operates at -30 °C” with “provides 27,000 or 30,000 BTUs at -30 °C.”\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we compare this available capacity with the building’s heat loss.\u003c\/p\u003e\n\u003cp\u003eIf the property loses 25,000 BTU\/h at -30 °C and the heat pump provides only 14,000, supplemental heating is still needed to cover the difference.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.36 at -8 °C: understanding this figure simply\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCOP\u003c\/strong\u003e compares delivered heat with electricity consumed.\u003c\/p\u003e\n\u003cp\u003eA system with a COP of 2.36 theoretically provides approximately 2.36 units of heat for each unit of electrical energy consumed by the heat pump under the corresponding test conditions.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the COP drops to around 1.26.\u003c\/p\u003e\n\u003cp\u003eThis decrease is normal.\u003c\/p\u003e\n\u003cp\u003eThe compressor has to work harder when the difference between the outdoor and indoor temperatures becomes very large.\u003c\/p\u003e\n\u003cp\u003eWe therefore consider performance at multiple temperatures rather than relying on a single annual figure.\u003c\/p\u003e\n\u003ch2\u003eAirGreen installation: with three zones, route design becomes just as important as choosing the heat pump\u003c\/h2\u003e\n\u003ch3\u003eThree heads solve a real air-distribution problem\u003c\/h3\u003e\n\u003cp\u003eOne of the best use cases for a \u003cstrong\u003eTripleZone\u003c\/strong\u003e heat pump is a condo or house with several rooms that do not communicate well with one another.\u003c\/p\u003e\n\u003cp\u003eConsider a property with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea living room;\u003c\/li\u003e\n\u003cli\u003ea primary bedroom;\u003c\/li\u003e\n\u003cli\u003ea closed office.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEven a very large wall-mounted unit installed in the living room will not be able to properly control the other two rooms when their doors are closed.\u003c\/p\u003e\n\u003cp\u003eAdding more BTUs to the living room does not solve this problem.\u003c\/p\u003e\n\u003cp\u003eWith three indoor units, each zone receives its own heated or cooled air directly.\u003c\/p\u003e\n\u003cp\u003eThis is one of the main reasons we sometimes recommend a multizone system rather than a higher-capacity single-split system.\u003c\/p\u003e\n\u003ch3\u003eAn AirGreen experience in Ahuntsic-Cartierville: three zones and a flat roof\u003c\/h3\u003e\n\u003cp\u003eIn July 2026, our AirGreen team completed a \u003cstrong\u003eTripleZone installation in Ahuntsic-Cartierville, Montreal\u003c\/strong\u003e, with three indoor units and a single condenser installed on a flat roof.\u003c\/p\u003e\n\u003cp\u003eThis project clearly illustrates the constraints of a real three-zone system: the condenser had to be securely installed on a support suitable for the roof, the refrigerant line runs had to serve several areas of the building, and future access for maintenance had to remain possible.\u003c\/p\u003e\n\u003cp\u003eThe evacuation and commissioning equipment was still visible in the site photos, illustrating a step the client generally does not see after the work is completed but that directly affects system reliability: \u003cstrong\u003erefrigeration preparation before startup\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe project involved a GREE heat pump rather than a Senville, but the installation challenge is directly comparable: three zones mean more piping, more connections, and more decisions about routing.\u003c\/p\u003e\n\u003ch3\u003eThe same outdoor unit can serve 2 to 4 zones\u003c\/h3\u003e\n\u003cp\u003eThe Senville brochure clearly states that the \u003cstrong\u003eSENA-28HF-MOA supports 2 to 4 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a homeowner, this flexibility can be appealing.\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean that a fourth head can always be added without reevaluating the system.\u003c\/p\u003e\n\u003cp\u003eWe must verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe allowable capacities of the indoor units;\u003c\/li\u003e\n\u003cli\u003ethe combination authorized by Senville;\u003c\/li\u003e\n\u003cli\u003ethe total connected BTUs;\u003c\/li\u003e\n\u003cli\u003ethe number of available ports;\u003c\/li\u003e\n\u003cli\u003ethe length limits;\u003c\/li\u003e\n\u003cli\u003ethe applicable AHRI match;\u003c\/li\u003e\n\u003cli\u003ethe impact on the rebate and certified efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe TripleZone configuration in this article must therefore be considered its own certified system, even though it uses the same condenser as other Senville products.\u003c\/p\u003e\n\u003ch3\u003e100 feet of R454B precharge: a real advantage for three refrigerant line runs\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a \u003cstrong\u003erefrigerant precharge capable of covering up to 100 ft\u003c\/strong\u003e on the SENA-28HF-MOA platform. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville specifies the same precharge for the Tri-Zone version currently on the market. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis feature becomes especially significant when there are three indoor units.\u003c\/p\u003e\n\u003cp\u003eOne head may be close to the condenser, while another may be located on the opposite floor of the property.\u003c\/p\u003e\n\u003cp\u003eNevertheless, we must distinguish between \u003cstrong\u003eavailable refrigerant charge\u003c\/strong\u003e and \u003cstrong\u003emaximum permitted lengths\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe limits for each branch, the combined length, and the height differences must always comply with the installation manual.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in – 3\/8 in piping: check each indoor unit\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003e1\/4 in – 3\/8 in\u003c\/strong\u003e connections for the wall-mounted units concerned.\u003c\/p\u003e\n\u003cp\u003eIn a three-zone system, this means three pairs of pipes to route between the indoor units and the condenser.\u003c\/p\u003e\n\u003cp\u003eOn a brick property in Montreal, we can sometimes group part of the piping in the same exterior line set cover.\u003c\/p\u003e\n\u003cp\u003eIn a home on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, two units may be installed on one side of the building and a third on another wall.\u003c\/p\u003e\n\u003cp\u003eEvery project therefore completely changes the refrigerant piping route.\u003c\/p\u003e\n\u003cp\u003eThat is also why the price of a TripleZone installation depends on more than just the price of the heat pump. Line length, height, penetrations, drains, line covers, and access affect the actual work.\u003c\/p\u003e\n\u003ch3\u003eR454B: more connections mean more reasons to take care during commissioning\u003c\/h3\u003e\n\u003cp\u003eThe system contains approximately \u003cstrong\u003e120.61 oz of R454B\u003c\/strong\u003e in the platform configuration presented in the brochure. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eR454B belongs to the A2L category.\u003c\/p\u003e\n\u003cp\u003eSenville also highlights \u003cstrong\u003eself-diagnostics and leak detection\u003c\/strong\u003e features in this generation of systems. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a TripleZone installation, we have more refrigerant connections than with a single-split system.\u003c\/p\u003e\n\u003cp\u003eEach connection must therefore be prepared carefully.\u003c\/p\u003e\n\u003cp\u003eOur commissioning includes checking the connections, leak testing, evacuation, and operational testing of each zone.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing nearly 170 lb\u003c\/h3\u003e\n\u003cp\u003eThe condenser measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 in × 16.14 in × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs approximately \u003cstrong\u003e168.43 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIts published sound level is approximately \u003cstrong\u003e61 dB(A)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis weight changes how we prepare the support.\u003c\/p\u003e\n\u003cp\u003eFor a ground installation, we must maintain adequate clearance above the snow.\u003c\/p\u003e\n\u003cp\u003eOn a flat roof, stability, access, load distribution, and membrane protection become priorities.\u003c\/p\u003e\n\u003cp\u003eFor a wall-mounted installation, we check the structure and the possible transmission of vibrations.\u003c\/p\u003e\n\u003ch3\u003e30 A MCA and 35 A MOP: plan the electrical work from the time of the quote\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003epower supply \u003cstrong\u003e208\/230 V\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 A MCA\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emaximum protection of \u003cstrong\u003e35 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore inspect the electrical panel before finalizing the project.\u003c\/p\u003e\n\u003cp\u003eThis step prevents discovering on the morning of installation that the panel lacks the required space, circuit, or configuration.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included: especially convenient with three zones\u003c\/h3\u003e\n\u003cp\u003eSenville provides smart app control and Alexa compatibility across its current TripleZone lineup. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith a three-indoor-unit system, the benefit is obvious.\u003c\/p\u003e\n\u003cp\u003eA homeowner can create different schedules for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe bedroom;\u003c\/li\u003e\n\u003cli\u003ethe office;\u003c\/li\u003e\n\u003cli\u003ethe living room.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is not necessary to keep all three zones at the same temperature all day.\u003c\/p\u003e\n\u003cp\u003eThis room-by-room control is one of the main advantages of a \u003cstrong\u003emulti-zone system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eLogisVert: why the displayed amount is $3,600\u003c\/h3\u003e\n\u003cp\u003eThe important data point for the LogisVert program is the heating capacity at \u003cstrong\u003e-8 °C\u003c\/strong\u003e, namely \u003cstrong\u003e30,000 BTU\/h\u003c\/strong\u003e for the pairing presented.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec currently indicates assistance of \u003cstrong\u003e$120 per 1,000 BTU\/h at -8 °C\u003c\/strong\u003e for an ENERGY STAR cold-climate-rated heat pump when all conditions are met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculation is therefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e30 × $120 = $3,600\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis corresponds to the \u003cstrong\u003e$3,600 LogisVert provincial rebate\u003c\/strong\u003e indicated for this system.\u003c\/p\u003e\n\u003cp\u003eThe installation date remains important, since Hydro-Québec specifies that the applicable amount is determined according to the rules in effect on that date. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eSome multi-unit residential buildings could theoretically receive $6,600\u003c\/h3\u003e\n\u003cp\u003eFor certain \u003cstrong\u003eeligible multi-unit residential buildings\u003c\/strong\u003e, an additional bonus of $100 per 1,000 BTU\/h at -8 °C is offered for eligible installations completed since June 15, 2026, bringing the total rate to \u003cstrong\u003e$220 per 1,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith 30,000 BTU\/h:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e30 × $220 = $6,600\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis amount is not automatic. The building must meet the program’s specific criteria.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore verify the address, building type, installation date, and exact pairing before presenting financial assistance as eligible.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference that must be clarified before the sale\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet provided for this configuration indicates a warranty \u003cstrong\u003e10-10-0\u003c\/strong\u003e, with the possibility of additional warranty coverage.\u003c\/p\u003e\n\u003cp\u003eHowever, the attached Senville brochure indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e for the SENA-28HF-MOA platform. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe current Senville TripleZone page also displays a ten-year manufacturer’s warranty on the compressor and five years on parts. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe documents therefore do not present exactly the same coverage.\u003c\/p\u003e\n\u003cp\u003eThe warranty applicable to the customer must be the one specified on the \u003cstrong\u003efinal AirGreen quote\u003c\/strong\u003e, taking into account the warranty program, registration, and any additional protection offered.\u003c\/p\u003e\n\u003ch3\u003eMistakes we avoid on a TripleZone installation\u003c\/h3\u003e\n\u003ch4\u003eChoosing three units solely by adding up their BTUs\u003c\/h4\u003e\n\u003cp\u003eEach room has its own heating load. Three zones with equal floor areas do not necessarily require three identical capacities.\u003c\/p\u003e\n\u003ch4\u003eInstalling the heads where the piping is easiest to route\u003c\/h4\u003e\n\u003cp\u003eThe airflow should first be directed toward the space we want to treat. An attractive duct cover does not compensate for poor indoor-unit placement.\u003c\/p\u003e\n\u003ch4\u003eForgetting that the three zones share the condenser\u003c\/h4\u003e\n\u003cp\u003eA TripleZone offers three indoor controls, but the outdoor capacity remains shared.\u003c\/p\u003e\n\u003ch4\u003eMixing up DoubleZone and TripleZone data\u003c\/h4\u003e\n\u003cp\u003eThe SENA-28HF-MOA can display 23.8 in one configuration and \u003cstrong\u003e23.0 SEER2 in the AHRI TripleZone pairing 215735314\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eNeglecting the outdoor unit's location\u003c\/h4\u003e\n\u003cp\u003eWith three zones relying on a single condenser, snow, defrost drainage, vibrations, and service access must be anticipated from the outset.\u003c\/p\u003e\n\u003ch3\u003eWhich projects do we particularly recommend this SENVILLE TripleZone for?\u003c\/h3\u003e\n\u003cp\u003eThis configuration is particularly suitable when a homeowner wants to serve \u003cstrong\u003ethree truly distinct spaces\u003c\/strong\u003e with a single condenser.\u003c\/p\u003e\n\u003cp\u003eFor example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethree bedrooms;\u003c\/li\u003e\n\u003cli\u003etwo bedrooms and a living room;\u003c\/li\u003e\n\u003cli\u003ea ground floor and two upstairs rooms;\u003c\/li\u003e\n\u003cli\u003ean office, a bedroom, and a living area;\u003c\/li\u003e\n\u003cli\u003ethree zones in a plex or a large condo;\u003c\/li\u003e\n\u003cli\u003ea property with limited outdoor space;\u003c\/li\u003e\n\u003cli\u003ea home where the goal is to significantly reduce electric heating through a cold-climate heat pump.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a completely open area, a single properly sized unit may sometimes make more sense.\u003c\/p\u003e\n\u003cp\u003eFor five or six small enclosed rooms, a different configuration may also be preferable.\u003c\/p\u003e\n\u003cp\u003eOur role at AirGreen is precisely to determine how many zones are truly necessary.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a SENVILLE 3-Zone heat pump\u003c\/h3\u003e\n\u003cp\u003eA TripleZone installation involves three times as many indoor decisions as a single-zone system.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we plan the locations, piping routes, drains, electrical supply, line-hide covers, outdoor support, and commissioning as one cohesive system.\u003c\/p\u003e\n\u003cp\u003eWe carry out multi-zone installations in \u003cstrong\u003eMontréal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e, in many different types of buildings: single-family homes, condos, plexes, older brick buildings, and newer properties.\u003c\/p\u003e\n\u003cp\u003eThe goal is not simply to achieve three temperatures using three remote controls. We want \u003cstrong\u003eeach zone to receive the appropriate capacity, the condenser to operate properly in winter, and the installation to remain accessible for maintenance throughout its service life\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for your SENVILLE 3-Zone 27,000 BTU\u003c\/h3\u003e\n\u003cp\u003eFor a \u003cstrong\u003eSENVILLE R454B 3-Zone Heat Pump | 27000 BTU\u003c\/strong\u003e in \u003cstrong\u003eMontréal, Laval, Longueuil, on the South Shore or the North Shore\u003c\/strong\u003e, contact AirGreen.\u003c\/p\u003e\n\u003cp\u003eWe can determine the capacity of each of the three zones, check the piping route, confirm the electrical supply, plan the condenser support, and verify eligibility for the \u003cstrong\u003e$3,600 LogisVert rebate\u003c\/strong\u003e according to the rules applicable at the time of installation.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"9 + 9 + 9","offer_id":56201142272292,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 12","offer_id":56201142305060,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 12 + 12","offer_id":56201142337828,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_3_ZONES_SENVILLE_R454B_27000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057758"},{"product_id":"thermopompe-3-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 3-Zone Heat Pump | 36000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eThree truly independent zones in the home: where the SENVILLE 36,000 BTU becomes more appealing than a single large wall-mounted unit\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e heat pump may initially seem to be simply a larger heat pump. With the \u003cstrong\u003eSENVILLE SENA-36HF-MOA\u003c\/strong\u003e, maximum capacity is not the most interesting feature: it is the ability to distribute that capacity among \u003cstrong\u003ethree distinct zones\u003c\/strong\u003e of a property while using a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003eFor a home in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore, or the South Shore\u003c\/strong\u003e, this design addresses a problem we regularly encounter at AirGreen. A home may have sufficient total heating and cooling capacity while remaining uncomfortable because the air simply does not reach where it is needed.\u003c\/p\u003e\n\u003cp\u003eA typical example is a property with an open-plan living room and kitchen on the main floor, several bedrooms upstairs, and a finished basement. A single wall-mounted unit installed in the living room cannot properly control all three areas. The \u003cstrong\u003eSENVILLE 36,000 BTU 3-zone heat pump\u003c\/strong\u003e instead makes it possible to assign one indoor unit to each area and adjust their temperatures separately.\u003c\/p\u003e\n\u003cp\u003eThe platform used is the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e outdoor unit, operating with \u003cstrong\u003eR-454B\u003c\/strong\u003e, providing heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, with a stated efficiency of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, an EER2 of \u003cstrong\u003e13\u003c\/strong\u003e, and a Region 4 HSPF2 of \u003cstrong\u003e10.7\u003c\/strong\u003e. The technical documentation also confirms a nominal capacity of 36,000 BTU, a cooling range of \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e, and a heating range of \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThe SENA-36HF-MOA outdoor model is a multi-zone platform, not merely a fixed configuration\u003c\/h3\u003e\n\u003cp\u003eOne point deserves clarification from the outset.\u003c\/p\u003e\n\u003cp\u003eThe first page of the supplied brochure illustrates a \u003cstrong\u003e36,000 BTU two-zone configuration with two 18,000 BTU units\u003c\/strong\u003e, under the commercial reference SENA-36HF-D1818. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e However, the technical table in the same document identifies the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e system as a multi-zone outdoor unit capable of serving multiple indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also officially markets this platform in a \u003cstrong\u003ethree-zone configuration\u003c\/strong\u003e, with three indoor units, three remote controls, and three installation kits. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis explains why the outdoor unit number remains \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e, even when the indoor combinations change.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner, the consequence is important: the outdoor model alone should not be compared. The \u003cstrong\u003eexact combination of the three indoor units\u003c\/strong\u003e, the corresponding AHRI listing, and their respective capacities must also be verified.\u003c\/p\u003e\n\u003ch3\u003eThe main characteristics of the AirGreen configuration\u003c\/h3\u003e\n\u003cp\u003eFor this product sheet, the reported data are as follows:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutdoor unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSENA-36HF-MOA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAHRI\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e215735317\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRefrigerant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-454B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCold climate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eENERGY STAR number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3630064\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSEER2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23,0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEER2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13,0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHSPF2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10,7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum outdoor heating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity at -8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38,000 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity at -15 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36,000 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum capacity at -30 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22,400 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCOP at -8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCOP at -30 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,47\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMCA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e37 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMOP\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum outdoor airflow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eapproximately 3,038 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutdoor sound level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutdoor dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38.58 × 16.34 × 38.39 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiFi\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eSenville’s documentation confirms several of these characteristics, including \u003cstrong\u003e23 SEER2, EER2 13, HSPF2-4 10.7, MCA 37 A, and maximum fuse 40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThree zones do not mean fixed 12,000 BTU in each room\u003c\/h3\u003e\n\u003cp\u003eThis is one of the most common mistakes when we explain a multi-zone installation.\u003c\/p\u003e\n\u003cp\u003eAn outdoor unit rated at \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e connected to three heads does not automatically and continuously distribute 12,000 BTU to each one.\u003c\/p\u003e\n\u003cp\u003eThe inverter compressor modulates its output according to demand. The three units can have different capacities, and the available power is distributed according to their operation, within the limits specified by the manufacturer.\u003c\/p\u003e\n\u003cp\u003eSenville’s stated heating range extends from \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e. The cooling range is from \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation capability becomes particularly useful in the fall and spring.\u003c\/p\u003e\n\u003cp\u003eImagine a home in \u003cstrong\u003eLongueuil\u003c\/strong\u003e comprising:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large open area requiring substantial heating;\u003c\/li\u003e\n\u003cli\u003etwo bedrooms exposed to the sun;\u003c\/li\u003e\n\u003cli\u003ea basement that naturally stays cooler.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt a given moment, a single zone may demand a lot of energy while the other two require very little adjustment. The inverter allows the outdoor unit to adapt its operation rather than treating all three zones as if their needs were identical.\u003c\/p\u003e\n\u003ch3\u003eThe real advantage of three zones is distribution, not just capacity\u003c\/h3\u003e\n\u003cp\u003eIn our HVAC assessments, we regularly see properties where the owner wants to increase the number of BTUs to solve the problem of an uncomfortable room.\u003c\/p\u003e\n\u003cp\u003eHowever, the problem is not always a lack of BTUs.\u003c\/p\u003e\n\u003cp\u003eSuppose a large heat pump is installed in the living room of a two-story house. It can quickly reach 22 °C in the living room, while a bedroom upstairs remains at 18 °C.\u003c\/p\u003e\n\u003cp\u003eInstalling an even larger head in the living room will not necessarily solve the problem. This unit's thermostat will quickly detect that its own zone has reached the setpoint and reduce its output before enough heat reaches the bedroom.\u003c\/p\u003e\n\u003cp\u003eWith three zones, we can work differently:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZone 1: open-concept main-floor area\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eZone 2: upper floor and bedroom area\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eZone 3: basement, office, or another separate space\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe result is often much more logical from a comfort standpoint.\u003c\/p\u003e\n\u003ch3\u003eEach zone can have its own temperature\u003c\/h3\u003e\n\u003cp\u003eThe multi-zone heat pump allows the indoor units to be adjusted individually.\u003c\/p\u003e\n\u003cp\u003eFor example, a family could maintain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 °C on the main floor\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19 °C in the bedrooms at night\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 °C in a rarely used basement\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen the basement becomes a family room in the evening, its setpoint can be increased independently of the other two areas.\u003c\/p\u003e\n\u003cp\u003eThis is one of the most concrete advantages of a \u003cstrong\u003e3-zone heat pump in Montreal\u003c\/strong\u003e: you do not have to condition every room in exactly the same way.\u003c\/p\u003e\n\u003cp\u003eHowever, an important limitation must be kept in mind. Units connected to the same outdoor unit generally need to operate in compatible modes. One unit cannot continuously call for heating while another requests cooling from the same conventional compressor.\u003c\/p\u003e\n\u003ch3\u003eDown to -30 °C, but with capacity that varies with temperature\u003c\/h3\u003e\n\u003cp\u003eThe Senville brochure indicates that the unit can continue operating in heating mode down to \u003cstrong\u003e-22 °F, or approximately -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specification sheet provides even more important information: the capacity available at different temperatures.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-8 °C\u003c\/strong\u003e, approximately \u003cstrong\u003e38,000 BTU\/h\u003c\/strong\u003e is indicated.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-15 °C\u003c\/strong\u003e, the published capacity is \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-30 °C\u003c\/strong\u003e, the listed maximum capacity drops to approximately \u003cstrong\u003e22,400 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis behavior must be understood before deciding whether the heat pump can become the home's sole heating system.\u003c\/p\u003e\n\u003cp\u003eEven though the unit continues to operate at -30 °C, it does not necessarily provide the nominal 36,000 BTU. If the house loses 30,000 BTU\/h at that temperature, a supplementary heating source will still be necessary.\u003c\/p\u003e\n\u003ch3\u003e22,400 BTU at -30 °C remains a significant capacity\u003c\/h3\u003e\n\u003cp\u003eThe difference from a unit that stops operating completely in extreme cold is significant.\u003c\/p\u003e\n\u003cp\u003eWith approximately \u003cstrong\u003e22,400 BTU\/h available at -30 °C\u003c\/strong\u003e, the heat pump can continue reducing the workload required of electric baseboard heaters or another backup system.\u003c\/p\u003e\n\u003cp\u003eIts \u003cstrong\u003emaximum COP published at -30 °C is 1.47\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis means that under this test condition, the heat pump still transfers more heat than electric resistance heating can produce using the same amount of electricity, even though its advantage is much smaller than at milder temperatures.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-8 °C\u003c\/strong\u003e, its indicated COP of \u003cstrong\u003e2.12\u003c\/strong\u003e is significantly more favorable.\u003c\/p\u003e\n\u003cp\u003eThis distinction makes a major difference to the annual bill: most heating hours during a winter in \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e do not occur at -30 °C.\u003c\/p\u003e\n\u003ch3\u003e38,000 BTU at -8 °C and an indicated LogisVert incentive of $4,560\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a heating capacity of \u003cstrong\u003e38,000 BTU\/h at -8 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec currently provides, when all program conditions are met, assistance of \u003cstrong\u003e$120 per 1,000 BTU\/h at -8 °C\u003c\/strong\u003e for a \u003cstrong\u003ecold-climate ENERGY STAR\u003c\/strong\u003e-certified heat pump. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculation is therefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e38 × $120 = $4,560\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the amount of \u003cstrong\u003e4 560 $\u003c\/strong\u003e indicated on the AirGreen product sheet.\u003c\/p\u003e\n\u003cp\u003eHowever, this financial assistance should never be considered automatic simply because a model carries ENERGY STAR certification. The installed combination, the date of the work, and compliance with all program requirements must be confirmed at the time of application.\u003c\/p\u003e\n\u003ch3\u003e23 SEER2 and EER2 13: suitable ratings for an efficient multizone system\u003c\/h3\u003e\n\u003cp\u003eThe technical table provided by Senville indicates a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a 36,000 BTU multizone system, this efficiency level is particularly appealing because three spaces can be controlled without having to install three separate outdoor units.\u003c\/p\u003e\n\u003cp\u003eHowever, actual consumption will depend on several factors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esetpoint temperature;\u003c\/li\u003e\n\u003cli\u003ebuilding insulation;\u003c\/li\u003e\n\u003cli\u003esolar exposure;\u003c\/li\u003e\n\u003cli\u003eair infiltration;\u003c\/li\u003e\n\u003cli\u003enumber of active zones;\u003c\/li\u003e\n\u003cli\u003esizing of the indoor units;\u003c\/li\u003e\n\u003cli\u003efrequency of door opening;\u003c\/li\u003e\n\u003cli\u003eoutdoor temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore advise against calculating annual savings based solely on SEER2.\u003c\/p\u003e\n\u003ch3\u003eA heating range of up to 44,000 BTU\u003c\/h3\u003e\n\u003cp\u003eThe nominal heating capacity is \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e, but the system can modulate up to approximately \u003cstrong\u003e44,000 BTU\/h\u003c\/strong\u003e under certain conditions. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis reserve can be useful when high demand temporarily occurs in several zones.\u003c\/p\u003e\n\u003cp\u003eConversely, capacity can drop to approximately \u003cstrong\u003e10,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis range allows the compressor to avoid operating continuously at maximum output on a mild day.\u003c\/p\u003e\n\u003ch2\u003eAirGreen installation of a SENVILLE 3-zone system: the details that truly change the outcome\u003c\/h2\u003e\n\u003ch3\u003eThe first task is to choose the three right zones\u003c\/h3\u003e\n\u003cp\u003eWith three indoor units, it would be easy to think that all you need to do is select three rooms.\u003c\/p\u003e\n\u003cp\u003eInstead, we analyze the property's thermal zones.\u003c\/p\u003e\n\u003cp\u003eAn open area containing the kitchen and living room can constitute a single zone even if it contains several rooms. Conversely, two bedrooms located on opposite sides of a long corridor may have very different thermal behavior.\u003c\/p\u003e\n\u003cp\u003eWe specifically check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe location of the stairs;\u003c\/li\u003e\n\u003cli\u003ethe orientation of the windows;\u003c\/li\u003e\n\u003cli\u003ethe ceiling height;\u003c\/li\u003e\n\u003cli\u003ethe insulation;\u003c\/li\u003e\n\u003cli\u003ethe area that is actually open;\u003c\/li\u003e\n\u003cli\u003ethe doors that are usually closed;\u003c\/li\u003e\n\u003cli\u003ethe pipe route;\u003c\/li\u003e\n\u003cli\u003ethe possible drainage location;\u003c\/li\u003e\n\u003cli\u003ethe comfort desired in each area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA typical configuration we encounter in Greater Montreal\u003c\/h3\u003e\n\u003cp\u003eFor a family home with a finished basement, a logical distribution might be:\u003c\/p\u003e\n\u003ch4\u003eMain zone: 18,000 BTU\u003c\/h4\u003e\n\u003cp\u003eLarge open area combining the kitchen, dining room, and living room.\u003c\/p\u003e\n\u003ch4\u003eSecondary zone: 9,000 BTU\u003c\/h4\u003e\n\u003cp\u003eFloor containing bedrooms or an office.\u003c\/p\u003e\n\u003ch4\u003eSecondary zone: 9,000 BTU\u003c\/h4\u003e\n\u003cp\u003eBasement or family room.\u003c\/p\u003e\n\u003cp\u003eThis is only a design example. Another house might require 12,000 + 12,000 + 12,000 BTU or a different combination.\u003c\/p\u003e\n\u003cp\u003eWhat matters is the \u003cstrong\u003eheating load of each zone\u003c\/strong\u003e, not achieving a perfectly symmetrical distribution.\u003c\/p\u003e\n\u003ch3\u003eThe attached brochure should not be used to automatically select the three indoor units\u003c\/h3\u003e\n\u003cp\u003eThe brochure provided illustrates a version with \u003cstrong\u003etwo 18,000 BTU units\u003c\/strong\u003e, because it is a dual-zone commercial page based on the same SENA-36HF-MOA. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a \u003cstrong\u003e3-zone\u003c\/strong\u003e installation, Senville officially confirms that a three-zone configuration includes three indoor units and three 16 ft line sets when this option is ordered. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore verify the compatibility of the exact combination before ordering the equipment.\u003c\/p\u003e\n\u003ch3\u003eR-454B and precharge capable of covering up to 125 ft\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe accompanying documentation states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erefrigerant charge: \u003cstrong\u003e134.04 oz\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003estated precharge: \u003cstrong\u003e125 ft\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eminimum outdoor temperature in heating mode: \u003cstrong\u003e-30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOn a three-zone installation, this available length becomes particularly relevant because the lines from all three units must reach the same outdoor unit.\u003c\/p\u003e\n\u003cp\u003eA two-story house can easily require:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 ft for the first head;\u003c\/li\u003e\n\u003cli\u003e35 ft for the second;\u003c\/li\u003e\n\u003cli\u003e45 ft for the third.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe plan the routes before deciding where to place the compressor. An outdoor location chosen solely for its appearance may require several additional dozen feet of unnecessary piping.\u003c\/p\u003e\n\u003ch3\u003e1\/4–1\/2 piping: the diameter must be validated for each zone\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet specifies \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eHowever, for a multi-zone system, we always confirm the diameters based on the capacity and model of each indoor unit. A 9,000 BTU head and a higher-capacity unit may not use exactly the same connections.\u003c\/p\u003e\n\u003cp\u003eThis is another reason to order the lines after validating the complete combination.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing more than 200 lb\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e38.58 × 16.34 × 38.39 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs \u003cstrong\u003e211.86 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis weight affects the choice of bracket.\u003c\/p\u003e\n\u003cp\u003eFor a heat pump of this size, we want a stable installation that can withstand vibrations, snow, and defrost cycles.\u003c\/p\u003e\n\u003cp\u003eA small, lightweight bracket used for a 9,000 BTU heat pump is not automatically suitable for an outdoor unit weighing more than 200 lb.\u003c\/p\u003e\n\u003ch3\u003e3,038 CFM: this is the outdoor airflow\u003c\/h3\u003e\n\u003cp\u003eThe technical data sheet indicates approximately \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e and an outdoor sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is important to clarify that this figure corresponds to the \u003cstrong\u003emaximum airflow of the outdoor unit\u003c\/strong\u003e, not the combined airflow of the indoor heads.\u003c\/p\u003e\n\u003cp\u003eAn outdoor airflow of more than 3,000 CFM requires adequate clearances.\u003c\/p\u003e\n\u003cp\u003eWe therefore avoid enclosing the unit in a space that is too narrow, beneath a low structure, or against several walls that could encourage recirculation of the discharged air.\u003c\/p\u003e\n\u003ch3\u003e65 dB(A): the outdoor location deserves careful consideration\u003c\/h3\u003e\n\u003cp\u003eAt the advertised \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e, the outdoor unit is not something we want to place thoughtlessly directly beneath a bedroom window.\u003c\/p\u003e\n\u003cp\u003eIn dense areas of \u003cstrong\u003eMontreal, Laval, and Longueuil\u003c\/strong\u003e, we also consider proximity to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe neighboring property;\u003c\/li\u003e\n\u003cli\u003ea patio;\u003c\/li\u003e\n\u003cli\u003ea balcony;\u003c\/li\u003e\n\u003cli\u003ebedrooms;\u003c\/li\u003e\n\u003cli\u003ea narrow passage between two buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWalls can reflect noise and make an installation more audible than a figure measured under standardized conditions might suggest.\u003c\/p\u003e\n\u003ch3\u003eA -30 °C heat pump must be installed to operate in snow\u003c\/h3\u003e\n\u003cp\u003eBuying a heat pump capable of heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e makes little sense if the outdoor unit ends up partially buried after a storm.\u003c\/p\u003e\n\u003cp\u003eWe therefore allow sufficient clearance to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eprotect the heat exchanger from snow accumulation;\u003c\/li\u003e\n\u003cli\u003eallow for defrosting;\u003c\/li\u003e\n\u003cli\u003eprevent ice from blocking the bottom of the unit;\u003c\/li\u003e\n\u003cli\u003efacilitate future maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDefrosting produces water, and that water quickly freezes on an outdoor surface in January. The space beneath and around the compressor must accommodate this accumulation without compromising operation.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A, MOP 40 A, and 208\/230 V power supply\u003c\/h3\u003e\n\u003cp\u003eThe documentation specifies a \u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e power supply, with a voltage range of 187 to 253 V.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eMCA is 37 A\u003c\/strong\u003e, and the indicated maximum protection is \u003cstrong\u003e40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese values should be used for electrical planning for the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eWe never size a circuit based solely on the advertised 36,000 BTUs.\u003c\/p\u003e\n\u003ch3\u003eWiFi, Alexa, and three zones: a much more useful feature than with a single head\u003c\/h3\u003e\n\u003cp\u003eSenville highlights app-based control as well as \u003cstrong\u003eAlexa\u003c\/strong\u003e integration for this series. The manufacturer also confirms remote scheduling features on its official three-zone configuration. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith three zones, this feature truly shows its value.\u003c\/p\u003e\n\u003cp\u003eRather than searching for three different remote controls, the owner can adjust several zones directly from their phone.\u003c\/p\u003e\n\u003cp\u003eFor a secondary residence, it is also possible to adjust the settings before arrival.\u003c\/p\u003e\n\u003ch3\u003eSelf-diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eThe Senville documentation mentions a monitoring system capable of reporting certain problems, including refrigerant-related anomalies. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese functions facilitate diagnosis, but they do not replace an inspection when a zone stops heating properly.\u003c\/p\u003e\n\u003cp\u003eAn apparent problem with just one head may stem from several factors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclogged filter;\u003c\/li\u003e\n\u003cli\u003edirty indoor fan;\u003c\/li\u003e\n\u003cli\u003esensor;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003ecommunication;\u003c\/li\u003e\n\u003cli\u003erefrigerant;\u003c\/li\u003e\n\u003cli\u003eincorrect configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA multi-zone system must therefore be diagnosed as a whole.\u003c\/p\u003e\n\u003ch3\u003eMaintenance is tripled indoors\u003c\/h3\u003e\n\u003cp\u003eA three-zone heat pump has three indoor units.\u003c\/p\u003e\n\u003cp\u003eThis also means:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethree sets of filters;\u003c\/li\u003e\n\u003cli\u003ethree heat exchangers;\u003c\/li\u003e\n\u003cli\u003ethree fans;\u003c\/li\u003e\n\u003cli\u003ethree condensate drains;\u003c\/li\u003e\n\u003cli\u003ethree points to check during maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA head installed in an open kitchen can become dirty much faster than a bedroom head. Therefore, the three units do not always need to have exactly the same level of dirt.\u003c\/p\u003e\n\u003cp\u003eWe recommend checking each filter regularly rather than treating the system as a single appliance.\u003c\/p\u003e\n\u003ch3\u003eBeware of oversizing small rooms\u003c\/h3\u003e\n\u003cp\u003eA common mistake with multi-zone systems is thinking that the more BTUs a head has, the better it will perform.\u003c\/p\u003e\n\u003cp\u003eIn a small bedroom, an oversized unit can reach its setpoint very quickly and run for less time at low speed.\u003c\/p\u003e\n\u003cp\u003eThe goal is therefore to select the appropriate capacity for each zone, even if the outdoor unit could accept a larger total combination.\u003c\/p\u003e\n\u003ch3\u003eWarranty: information to confirm before purchase\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a manufacturer’s warranty \u003cstrong\u003e10-10-0\u003c\/strong\u003e, namely ten years on the compressor, ten years on parts, and no manufacturer labor coverage, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eThe Senville documentation provided indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e The official tri-zone page currently published by Senville also presents this coverage of 10 years on the compressor and 5 years on parts. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe therefore recommend confirming the \u003cstrong\u003ewarranty conditions applicable in Quebec for the purchased combination, as well as the registration requirements\u003c\/strong\u003e, at the time of ordering.\u003c\/p\u003e\n\u003ch3\u003eWhich properties do we primarily recommend this 3-zone SENVILLE for?\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE 36,000 BTU is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea \u003cstrong\u003etwo-story house with a basement\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethree physically distant areas;\u003c\/li\u003e\n\u003cli\u003ea large open-concept area combined with enclosed rooms;\u003c\/li\u003e\n\u003cli\u003ea condo or dwelling with several distinct thermal zones;\u003c\/li\u003e\n\u003cli\u003ea property where the goal is to limit the number of outdoor units;\u003c\/li\u003e\n\u003cli\u003ea project seeking a \u003cstrong\u003ecold-climate ENERGY STAR heat pump\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ea homeowner who wants to continue using their heat pump down to \u003cstrong\u003e-30°C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ean installation where each zone must be able to have its own setpoint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is less logical when a single large open area needs to be treated. In that case, a properly sized single-zone heat pump may be simpler and more economical.\u003c\/p\u003e\n\u003ch3\u003eWhy AirGreen sizing matters more for a multizone system\u003c\/h3\u003e\n\u003cp\u003eA three-zone system involves far more variables than a single-zone unit.\u003c\/p\u003e\n\u003cp\u003eWe need to match:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ethe outdoor unit capacity\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe three heating loads\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe indoor unit models\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe refrigerant line lengths\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe electrical requirements\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe drains\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe locations\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe AHRI certification\u003c\/strong\u003e,\u003cbr\u003e\u003cstrong\u003ethe applicable rebate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThat is why we pay particular attention to the design before the \u003cstrong\u003eHVAC installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, our goal is not simply to install three heads on three available walls. We strive to create three zones that truly correspond to how the property is occupied.\u003c\/p\u003e\n\u003ch3\u003eSENVILLE 3-zone heat pump installation in Montreal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e36,000 BTU SENVILLE SENA-36HF-MOA R454B\u003c\/strong\u003e combines a wide modulation range, cold-climate certification, operation down to -30°C, a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e, substantial low-temperature heating capacity, and the ability to distribute comfort across three areas.\u003c\/p\u003e\n\u003cp\u003eHowever, its main advantage does not lie in a single statistic.\u003c\/p\u003e\n\u003cp\u003eIt offers the possibility of cooling and heating \u003cstrong\u003ethree different zones with a single outdoor unit\u003c\/strong\u003e, provided that each zone is properly sized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen for a quote and an assessment of your 3-zone SENVILLE heat pump project in Montreal, Laval, Longueuil, the North Shore, or the South Shore. We can verify the combination of the three indoor units, the AHRI certification, low-temperature capacity, electrical installation, refrigerant line routing, and the applicable LogisVert rebate before the work begins.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"12 + 12 + 12","offer_id":56201197846820,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 12 + 18","offer_id":56201197879588,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 12 + 18","offer_id":56201197912356,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 18","offer_id":56201197945124,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_3_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057766"},{"product_id":"thermopompe-3-zones-senville-r454b-48000-btu","title":"SENVILLE R454B 3-Zone Heat Pump | 48000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eA high-capacity multi-zone solution for three distinct areas of a home or business\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 48,000 BTU 3-zone heat pump\u003c\/strong\u003e, built around the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e outdoor unit, is intended for properties where a single wall-mounted unit cannot properly distribute heating and cooling. It can serve several independent areas from a single outdoor unit while giving each zone its own controls and indoor unit.\u003c\/p\u003e\n\u003cp\u003eThis is a particularly relevant configuration for \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore and the South Shore\u003c\/strong\u003e, where we regularly encounter multi-story homes, duplexes, additions, open spaces combined with enclosed bedrooms, and small commercial buildings for which adding a central ducted system would be difficult or costly.\u003c\/p\u003e\n\u003cp\u003eThe system's mechanical foundation is the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e, a multi-zone ductless heat pump capable of supporting \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e, depending on the configuration. The attached brochure commercially presents a two-zone package of 24,000 + 24,000 BTU, but the outdoor unit's technical specifications confirm that the SENA-48HF-MOA platform can serve between two and six indoor units. A \u003cstrong\u003ethree-zone\u003c\/strong\u003e configuration is therefore one of this platform's possibilities. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor this AirGreen configuration, the main specifications are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-48HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAdvertised cooling capacity: 48,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735320\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR reference: 3630067\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 11.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold-climate certification: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 4,503 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor dimensions: 37.48 × 16.34 × 52.48 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpecified piping: 3\/8 in – 5\/8 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAutomatic vertical and horizontal louvers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAdditional warranty available\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProvincial rebate indicated: $5,400\u003c\/strong\u003e, subject to the criteria applicable to the project.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA true multi-zone platform, not three independent heat pumps\u003c\/h3\u003e\n\u003cp\u003eThe principle is simple to understand, but it completely changes how the project is sized.\u003c\/p\u003e\n\u003cp\u003eWith three independent heat pumps, each indoor unit has its own outdoor compressor. With a \u003cstrong\u003e3-zone heat pump\u003c\/strong\u003e, the three indoor units are connected to a \u003cstrong\u003esingle outdoor compressor\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis can represent a significant advantage when you want to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elimit the number of units visible outside;\u003c\/li\u003e\n\u003cli\u003eheat three floors;\u003c\/li\u003e\n\u003cli\u003eserve a ground floor, a basement, and an upper floor;\u003c\/li\u003e\n\u003cli\u003edistribute cooling between an open space and two enclosed areas;\u003c\/li\u003e\n\u003cli\u003ereduce the mechanical footprint around the property;\u003c\/li\u003e\n\u003cli\u003emaintain individual temperature control in each zone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe downside of this architecture is that the three indoor units \u003cstrong\u003eshare the available capacity\u003c\/strong\u003e of the SENA-48HF-MOA.\u003c\/p\u003e\n\u003cp\u003eSizing must therefore be done as a whole.\u003c\/p\u003e\n\u003ch3\u003eThe actual capacity of the SENA-48HF-MOA far exceeds a simple “48,000 BTU” designation\u003c\/h3\u003e\n\u003cp\u003eThe Senville technical sheet associated with the outdoor unit indicates a cooling capacity of \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e, with a modulating range of \u003cstrong\u003e12,000 to 57,000 BTU\/h\u003c\/strong\u003e. In heating mode, it indicates \u003cstrong\u003e49,000 BTU\/h\u003c\/strong\u003e, with a range that can vary between \u003cstrong\u003e13,000 and 57,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese data show why inverter technology is essential in a multi-zone system.\u003c\/p\u003e\n\u003cp\u003eThe system does not have to operate constantly at maximum capacity. When all three zones require little energy, the compressor can reduce its output. When several zones simultaneously require heating or cooling, it can increase its capacity within the limits of its operating range.\u003c\/p\u003e\n\u003cp\u003eFor comfort, this notably helps to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ereduce significant temperature fluctuations;\u003c\/li\u003e\n\u003cli\u003elimit unnecessary starts and stops;\u003c\/li\u003e\n\u003cli\u003eadapt output to the building’s actual load;\u003c\/li\u003e\n\u003cli\u003ebetter distribute energy when all zones are not operating at the same intensity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThree zones do not necessarily mean three identical units\u003c\/h3\u003e\n\u003cp\u003eThis is one of the mistakes we want to avoid at \u003cstrong\u003eAirGreen\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhen a homeowner wants a \u003cstrong\u003e48,000 BTU three-zone heat pump\u003c\/strong\u003e, it may be tempting to simply divide 48,000 by three and conclude that approximately three 16,000 BTU indoor units are needed.\u003c\/p\u003e\n\u003cp\u003eThis reasoning is too simplistic.\u003c\/p\u003e\n\u003cp\u003eLet’s consider a very common scenario on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe ground floor includes an open kitchen, dining room, and living room;\u003c\/li\u003e\n\u003cli\u003ethe upper floor contains several bedrooms;\u003c\/li\u003e\n\u003cli\u003ethe basement is cooler, less exposed to sunlight, and partially underground.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe three zones do not have the same needs.\u003c\/p\u003e\n\u003cp\u003eThe ground floor may have a significant cooling load because of the windows and kitchen. The upper floor may be the hottest area in summer because of the attic. The basement may require much less cooling but more heating during certain periods.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore analyze \u003cstrong\u003ethe load of each zone individually\u003c\/strong\u003e before selecting the compatible indoor units.\u003c\/p\u003e\n\u003ch3\u003eThe brochure illustrates a two-zone system, but the outdoor unit supports more\u003c\/h3\u003e\n\u003cp\u003eAn important detail in the accompanying documentation needs to be clarified.\u003c\/p\u003e\n\u003cp\u003eThe commercial page shown in the brochure presents a \u003cstrong\u003eSENA\/48HF\/D\u003c\/strong\u003e configuration with two indoor units of \u003cstrong\u003e24,000 BTU each\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis does not mean that the SENA-48HF-MOA is limited to two zones.\u003c\/p\u003e\n\u003cp\u003eIn the specifications table, the manufacturer explicitly indicates \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e for this outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor an AirGreen page dedicated to the \u003cstrong\u003ethree-zone configuration\u003c\/strong\u003e, the key point is therefore the outdoor platform and the final match selected with the appropriate indoor units.\u003c\/p\u003e\n\u003cp\u003eWe always validate the exact match before installation, particularly when the project must correspond to an AHRI number or meet the conditions of a rebate program.\u003c\/p\u003e\n\u003ch3\u003e23 SEER2: high seasonal cooling efficiency\u003c\/h3\u003e\n\u003cp\u003eThe system has a \u003cstrong\u003e23 SEER2\u003c\/strong\u003e rating. Senville's documentation also confirms an \u003cstrong\u003eEER2 of 12\u003c\/strong\u003e, an \u003cstrong\u003eHSPF2 Region 4 of 11\u003c\/strong\u003e, and an \u003cstrong\u003eHSPF2 Region 5 of 9\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a multi-zone heat pump of this capacity, these values are interesting, particularly when the system replaces several aging air conditioners.\u003c\/p\u003e\n\u003cp\u003eHowever, a high rating on paper does not automatically guarantee low consumption.\u003c\/p\u003e\n\u003cp\u003eActual results also depend on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe requested temperature in each zone;\u003c\/li\u003e\n\u003cli\u003ethe length and quality of the refrigerant lines;\u003c\/li\u003e\n\u003cli\u003ethe frequency of use of the three indoor units;\u003c\/li\u003e\n\u003cli\u003ethe building's insulation;\u003c\/li\u003e\n\u003cli\u003ethe location of the wall-mounted indoor units;\u003c\/li\u003e\n\u003cli\u003ethe cleanliness of the filters and coils;\u003c\/li\u003e\n\u003cli\u003ethe damper settings;\u003c\/li\u003e\n\u003cli\u003ethe distribution of capacity among the zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThat is why a properly planned \u003cstrong\u003eHVAC installation\u003c\/strong\u003e remains just as important as the SEER2 rating.\u003c\/p\u003e\n\u003ch3\u003eThe HSPF2 of 11.0 is of particular interest to homeowners who rely heavily on electricity for heating.\u003c\/h3\u003e\n\u003cp\u003eFor Quebec, winter performance deserves as much attention as SEER2.\u003c\/p\u003e\n\u003cp\u003eAn \u003cstrong\u003eHSPF2 of 11\u003c\/strong\u003e indicates a good level of seasonal efficiency under the corresponding test conditions. The Senville specifications also associate a nominal COP of \u003cstrong\u003e3.7 W\/W\u003c\/strong\u003e with the system. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis data does not mean that the COP will remain at 3.7 at -20 °C or -30 °C.\u003c\/p\u003e\n\u003cp\u003eThe performance of a heat pump generally decreases as the outdoor temperature drops. This behavior is normal and must be factored into the heating system design.\u003c\/p\u003e\n\u003ch3\u003e45,000 BTU at -8 °C and 47,000 BTU at -15 °C\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data provided for this configuration indicate:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAt -8 °C:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecapacity: \u003cstrong\u003e45,000 BTU\/h\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCOP: \u003cstrong\u003e2,6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAt -15 °C:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecapacity: \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese figures are particularly interesting for a \u003cstrong\u003emulti-zone heat pump in Montreal\u003c\/strong\u003e, as they concern temperatures that we regularly experience during the winter.\u003c\/p\u003e\n\u003cp\u003eUnder these conditions, the system retains a high capacity, helping cover a significant portion of the heating needs of a properly sized property.\u003c\/p\u003e\n\u003cp\u003eHowever, this capacity must always be compared with the building’s \u003cstrong\u003eactual heat losses\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA home with heat losses of 55,000 BTU\/h at -15 °C is not equivalent to a home that loses 35,000.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C, the system continues to provide heat, but at reduced capacity\u003c\/h3\u003e\n\u003cp\u003eThe SENA-48HF-MOA is designed to operate in heating mode down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, and Senville documentation confirms a minimum outdoor temperature of \u003cstrong\u003e-22 °F \/ -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAirGreen data indicate at this temperature:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ecapacity of approximately 24,600 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP of approximately 1.27\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is an important example of the difference between \u003cstrong\u003eminimum operating temperature\u003c\/strong\u003e and \u003cstrong\u003eavailable capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEven if the unit continues operating at -30 °C, it does not necessarily provide its rated 48,000 BTU.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner in \u003cstrong\u003eLaval, Terrebonne, Blainville, Longueuil, Boucherville, or Montreal\u003c\/strong\u003e, this distinction may determine whether supplemental heating will be required on the coldest days.\u003c\/p\u003e\n\u003ch3\u003eA cold-climate-certified heat pump\u003c\/h3\u003e\n\u003cp\u003eThe configuration is listed as \u003cstrong\u003eCOLD CLIMATE: Yes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville documentation also describes the system as a cold-climate heat pump capable of heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis feature is particularly relevant in Quebec.\u003c\/p\u003e\n\u003cp\u003eWe still encounter installations where an older system practically stops contributing to heating as soon as the outdoor temperature drops sharply. With a modern cold-climate heat pump, the goal is to extend the period during which the compressor genuinely contributes to heating the home.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and the system’s exact reference\u003c\/h3\u003e\n\u003cp\u003eThe system is listed as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e, with reference \u003cstrong\u003e3630067\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville documentation also confirms this platform’s ENERGY STAR certification. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a project with financial assistance, this detail must be verified at the same time as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe AHRI number;\u003c\/li\u003e\n\u003cli\u003ethe exact combination of indoor units;\u003c\/li\u003e\n\u003cli\u003ethe installation address;\u003c\/li\u003e\n\u003cli\u003ethe program criteria;\u003c\/li\u003e\n\u003cli\u003ethe installation date;\u003c\/li\u003e\n\u003cli\u003ethe required documents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt AirGreen, we do not consider a rebate automatically guaranteed simply because an outdoor unit carries a certification.\u003c\/p\u003e\n\u003ch3\u003eA listed provincial rebate of $5,400\u003c\/h3\u003e\n\u003cp\u003eFor this AirGreen configuration, the \u003cstrong\u003elisted provincial rebate is $5,400\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn a three-zone system, this amount can significantly change the project's net cost.\u003c\/p\u003e\n\u003cp\u003eHowever, eligibility must be confirmed before finalizing the purchase decision. Programs may depend on the exact combination of equipment and several other technical or administrative criteria.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important with multi-zone systems, where two installations using the same outdoor unit may not necessarily have the same indoor-unit pairing or the same certification.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included: each zone becomes easier to manage\u003c\/h3\u003e\n\u003cp\u003eThe SENA-48HF is equipped for \u003cstrong\u003eWi-Fi control\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville documentation indicates that the system can be controlled remotely through an app to change settings and create schedules. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith a three-zone installation, this feature becomes even more useful.\u003c\/p\u003e\n\u003cp\u003eA homeowner might, for example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elower the basement temperature when no one is using it;\u003c\/li\u003e\n\u003cli\u003ekeep the bedrooms cooler at night;\u003c\/li\u003e\n\u003cli\u003eadjust the main living area before returning home;\u003c\/li\u003e\n\u003cli\u003echange the setpoints without going to each unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis flexibility makes it possible to truly take advantage of zoning.\u003c\/p\u003e\n\u003ch3\u003eAn important limitation of multi-zone systems: the modes must remain compatible\u003c\/h3\u003e\n\u003cp\u003eThe indoor units connected to the same multi-zone outdoor unit do not operate like three completely independent systems.\u003c\/p\u003e\n\u003cp\u003eIn practice, the zones generally need to operate in compatible modes. The system should therefore not be planned with the expectation that one unit will heat a room substantially while another simultaneously provides cooling.\u003c\/p\u003e\n\u003cp\u003eIn a typical home, this behavior rarely causes problems.\u003c\/p\u003e\n\u003cp\u003eBut it can become important in certain properties:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elarge south-facing windows;\u003c\/li\u003e\n\u003cli\u003ea very hot solarium;\u003c\/li\u003e\n\u003cli\u003ea server room;\u003c\/li\u003e\n\u003cli\u003ea commercial space with high internal loads;\u003c\/li\u003e\n\u003cli\u003ea cold basement while one floor receives a lot of sunlight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe check this type of situation before recommending a multi-zone configuration.\u003c\/p\u003e\n\u003ch2\u003eAirGreen installation: the success of a 3-zone heat pump depends primarily on properly sizing and routing the three branches\u003c\/h2\u003e\n\u003ch3\u003eThree indoor units mean three refrigerant line sets that must be planned correctly\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates \u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e piping for this platform.\u003c\/p\u003e\n\u003cp\u003eOn a three-zone system, pipe design becomes more complex than with a single-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eEach indoor unit requires its own line set.\u003c\/p\u003e\n\u003cp\u003eWe must plan for:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe piping route;\u003c\/li\u003e\n\u003cli\u003ethe location of the penetrations;\u003c\/li\u003e\n\u003cli\u003ethe lengths;\u003c\/li\u003e\n\u003cli\u003ethe height difference;\u003c\/li\u003e\n\u003cli\u003edrainage for each indoor unit;\u003c\/li\u003e\n\u003cli\u003eaccess to the connections;\u003c\/li\u003e\n\u003cli\u003ethe exterior finish;\u003c\/li\u003e\n\u003cli\u003ethe possibility of future servicing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIn a three-story house in \u003cstrong\u003eMontreal\u003c\/strong\u003e, the branch serving the top floor may require a much longer route than the one serving the ground floor.\u003c\/p\u003e\n\u003cp\u003eIt is preferable to settle these details before the project rather than improvise on the day of installation.\u003c\/p\u003e\n\u003ch3\u003eThe system is precharged with R-454B for a significant piping length\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates \u003cstrong\u003eR-454B\u003c\/strong\u003e, a stated charge of \u003cstrong\u003e151.68 oz\u003c\/strong\u003e, and a precharge covering up to \u003cstrong\u003e150 feet of piping\u003c\/strong\u003e under the conditions specified by the manufacturer. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis precharge capacity is particularly relevant for a multi-zone platform where several branches can quickly add up to a significant total length.\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean that all 150-foot configurations are automatically acceptable.\u003c\/p\u003e\n\u003cp\u003eThe individual lengths, height, and connection requirements must always comply with the applicable installation manual for the selected combination.\u003c\/p\u003e\n\u003ch3\u003eR-454B requires appropriate installation practices\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e is the refrigerant used by this generation of SENVILLE systems.\u003c\/p\u003e\n\u003cp\u003eFor AirGreen, this means that commissioning must follow the procedures specific to the equipment and refrigerant used.\u003c\/p\u003e\n\u003cp\u003eA proper refrigeration installation includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eproperly executed connections;\u003c\/li\u003e\n\u003cli\u003ea leak test;\u003c\/li\u003e\n\u003cli\u003ean appropriate vacuum;\u003c\/li\u003e\n\u003cli\u003everification of the lengths;\u003c\/li\u003e\n\u003cli\u003eproper commissioning;\u003c\/li\u003e\n\u003cli\u003eoperating measurements after startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a multi-zone system, a problem on one branch may manifest differently from another, making installation accuracy even more important.\u003c\/p\u003e\n\u003ch3\u003e4,503 CFM outdoors: the outdoor unit needs space\u003c\/h3\u003e\n\u003cp\u003eThe SENA-48HF-MOA moves up to approximately \u003cstrong\u003e4,502.8 CFM\u003c\/strong\u003e of air outdoors.\u003c\/p\u003e\n\u003cp\u003eIts stated sound level is \u003cstrong\u003e65 dB\u003c\/strong\u003e, its dimensions are \u003cstrong\u003e37.48 × 16.34 × 52.48 in.\u003c\/strong\u003e, and its outdoor weight is approximately \u003cstrong\u003e246.47 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe are therefore dealing with a substantial outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIts installation requires a sufficiently sturdy base and a location that allows adequate airflow.\u003c\/p\u003e\n\u003cp\u003eWe specifically avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecorners that are too confined;\u003c\/li\u003e\n\u003cli\u003elocations directly beneath a gutter downspout;\u003c\/li\u003e\n\u003cli\u003eareas where snow accumulates heavily;\u003c\/li\u003e\n\u003cli\u003espaces without service access;\u003c\/li\u003e\n\u003cli\u003elocations too close to a bedroom window;\u003c\/li\u003e\n\u003cli\u003esurfaces where defrost water could create a problem.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e246 lb: the outdoor support must not be improvised\u003c\/h3\u003e\n\u003cp\u003eThe stated weight of nearly \u003cstrong\u003e246.5 lb\u003c\/strong\u003e should be taken seriously. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA unit of this size must be installed on an appropriate structure.\u003c\/p\u003e\n\u003cp\u003eDepending on the property and site conditions, we may favor installation on a bracket or a suitable base, with enough height to limit problems related to snow and defrosting.\u003c\/p\u003e\n\u003cp\u003eA unit placed too close to the ground can become difficult to keep clear during a Quebec winter.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and MOP 40 A: the electrical system must be checked before ordering\u003c\/h3\u003e\n\u003cp\u003eThe technical specifications indicate a \u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e power supply, a voltage range of \u003cstrong\u003e187 to 253 V\u003c\/strong\u003e, an \u003cstrong\u003eMCA of 37 A\u003c\/strong\u003e, and a maximum protection of \u003cstrong\u003e40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a home with an electrical panel that is already heavily loaded, we therefore need to check the available capacity.\u003c\/p\u003e\n\u003cp\u003eWe regularly encounter properties in Montreal where several electrical devices have been added over the years: water heater, charging station, stove, dryer, electric heating, spa.\u003c\/p\u003e\n\u003cp\u003eAdding a high-capacity heat pump without considering the overall electrical load would be poor practice.\u003c\/p\u003e\n\u003ch3\u003eThe location of the three indoor heads is critical\u003c\/h3\u003e\n\u003cp\u003eA high-capacity wall-mounted unit installed in the wrong location will not distribute air properly simply because it has a high BTU capacity.\u003c\/p\u003e\n\u003cp\u003eFor each zone, we consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe shape of the room;\u003c\/li\u003e\n\u003cli\u003ethe ceiling height;\u003c\/li\u003e\n\u003cli\u003eopenings to other areas;\u003c\/li\u003e\n\u003cli\u003ethe doors;\u003c\/li\u003e\n\u003cli\u003ethe location of the windows;\u003c\/li\u003e\n\u003cli\u003ethe direction of the sun;\u003c\/li\u003e\n\u003cli\u003ethe occupants’ location;\u003c\/li\u003e\n\u003cli\u003ethe possible drain route;\u003c\/li\u003e\n\u003cli\u003eaccess to the piping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn an open area, a well-placed unit can serve several adjacent areas. In an area consisting of several closed bedrooms, a single wall-mounted unit in a corridor may be less effective.\u003c\/p\u003e\n\u003ch3\u003eAutomatic louvers: useful for distributing air, but not for correcting a poor location\u003c\/h3\u003e\n\u003cp\u003eAirGreen data indicates \u003cstrong\u003eautomatic vertical and horizontal louvers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis function helps distribute air throughout the room and reduces the need to manually set a single airflow direction.\u003c\/p\u003e\n\u003cp\u003eBut motorized louvers never replace proper location selection.\u003c\/p\u003e\n\u003cp\u003eA head installed directly in front of a staircase can send a large portion of its air out of the zone. A unit placed too close to a ceiling, cabinet, or obstruction may also lose distribution efficiency.\u003c\/p\u003e\n\u003ch3\u003eThree condensate drains: an often-underestimated part of the project\u003c\/h3\u003e\n\u003cp\u003eA three-zone configuration also means \u003cstrong\u003ethree indoor units producing condensation in cooling mode\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEach drain must be properly designed.\u003c\/p\u003e\n\u003cp\u003eWhen we can use gravity, we generally favor a steady slope toward the outside.\u003c\/p\u003e\n\u003cp\u003eWhen this is not possible, a condensate pump may become necessary.\u003c\/p\u003e\n\u003cp\u003ePoor drainage can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eleaks;\u003c\/li\u003e\n\u003cli\u003emarks on the walls;\u003c\/li\u003e\n\u003cli\u003epump noises;\u003c\/li\u003e\n\u003cli\u003eodor problems;\u003c\/li\u003e\n\u003cli\u003esafety shutdowns;\u003c\/li\u003e\n\u003cli\u003eavoidable service calls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a multi-zone project, drain quality deserves as much attention as refrigerant lines.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville indicates the presence of an \u003cstrong\u003eautomatic diagnostic and leak detection system\u003c\/strong\u003e, designed to report certain issues and facilitate maintenance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is a useful feature, particularly on a system with multiple zones.\u003c\/p\u003e\n\u003cp\u003eHowever, it does not replace a technical inspection.\u003c\/p\u003e\n\u003cp\u003eA code or alert helps guide the diagnosis, but pressures, temperatures, electrical signals, and actual installation conditions must still be measured when the system shows an issue.\u003c\/p\u003e\n\u003ch3\u003eWarranty: what we verify before presenting it to the customer\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a \u003cstrong\u003e10-10-0 manufacturer’s warranty\u003c\/strong\u003e, with the option of adding an additional warranty.\u003c\/p\u003e\n\u003cp\u003eThe attached Senville documentation states \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt also specifies that professional installation is required to preserve the coverage and expected performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs this information must correspond to the product sold and the applicable registration conditions, we recommend always confirming the exact coverage when preparing the quote.\u003c\/p\u003e\n\u003ch3\u003eMaintaining a three-zone heat pump: three indoor units, three filters to monitor\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system does not require complicated maintenance, but you should avoid treating the three heads as if they were a single indoor unit.\u003c\/p\u003e\n\u003cp\u003eEach zone has:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eits filters;\u003c\/li\u003e\n\u003cli\u003eits coil;\u003c\/li\u003e\n\u003cli\u003eits fan;\u003c\/li\u003e\n\u003cli\u003eits drain;\u003c\/li\u003e\n\u003cli\u003eits control;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the ground-floor unit operates much more than the other two, it may require more frequent cleaning.\u003c\/p\u003e\n\u003cp\u003eWe particularly recommend:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclean the filters regularly;\u003c\/li\u003e\n\u003cli\u003echeck the condition of the fans;\u003c\/li\u003e\n\u003cli\u003ekeep the air intakes clear;\u003c\/li\u003e\n\u003cli\u003emonitor the drains;\u003c\/li\u003e\n\u003cli\u003eclean the heat exchangers when necessary;\u003c\/li\u003e\n\u003cli\u003ekeep the outdoor unit clear;\u003c\/li\u003e\n\u003cli\u003eremove accumulations of leaves or snow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho is this three-zone, 48,000 BTU Senville system particularly suitable for?\u003c\/h3\u003e\n\u003cp\u003eThis configuration may be interesting for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea three-level house;\u003c\/li\u003e\n\u003cli\u003ea duplex requiring multiple comfort zones;\u003c\/li\u003e\n\u003cli\u003ea property with an addition;\u003c\/li\u003e\n\u003cli\u003ean open main floor accompanied by two distinct zones;\u003c\/li\u003e\n\u003cli\u003ea small business with three separate spaces;\u003c\/li\u003e\n\u003cli\u003ea home without a duct network;\u003c\/li\u003e\n\u003cli\u003ea project where the number of outdoor units should be limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt offers several strong features for the Quebec climate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e23 SEER2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e11 HSPF2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eoperation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e45,000 BTU at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e47,000 BTU at -15 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eWi-Fi included\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ecold-climate\u003c\/strong\u003e status\n\u003c\/li\u003e\n\u003cli\u003eindicated possibility of a rebate \u003cstrong\u003e5 400 $\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen three simple systems may sometimes be preferable\u003c\/h3\u003e\n\u003cp\u003eA single outdoor unit is not always the best solution.\u003c\/p\u003e\n\u003cp\u003eWe might prefer several independent systems if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe three zones have very different schedules;\u003c\/li\u003e\n\u003cli\u003eheating needs are highly unbalanced;\u003c\/li\u003e\n\u003cli\u003ethe zones are often likely to require opposite modes;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant-line routes become too complex;\u003c\/li\u003e\n\u003cli\u003eheating redundancy is a priority;\u003c\/li\u003e\n\u003cli\u003ethe outdoor space can easily accommodate several condensers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA multi-zone system should be chosen because it suits the building, not simply because it reduces the number of outdoor units.\u003c\/p\u003e\n\u003ch3\u003eWhy AirGreen places so much importance on sizing\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Climatisation \u0026amp; Chauffage\u003c\/strong\u003e, we often see the difference between a properly selected heat pump and an installation chosen solely based on the number of BTUs.\u003c\/p\u003e\n\u003cp\u003eFor a \u003cstrong\u003e48,000 BTU SENVILLE R454B 3-zone system\u003c\/strong\u003e, we check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe capacity required for each of the three zones;\u003c\/li\u003e\n\u003cli\u003eheat losses;\u003c\/li\u003e\n\u003cli\u003esolar gains;\u003c\/li\u003e\n\u003cli\u003eindoor-unit locations;\u003c\/li\u003e\n\u003cli\u003eair circulation;\u003c\/li\u003e\n\u003cli\u003eline routing;\u003c\/li\u003e\n\u003cli\u003edrains;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003eoutdoor unit support;\u003c\/li\u003e\n\u003cli\u003esnow management;\u003c\/li\u003e\n\u003cli\u003eeligibility conditions for rebates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis approach makes it possible to take advantage of the system’s features without creating an oversized, poorly balanced, or difficult-to-maintain installation.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for your 48,000 BTU SENVILLE 3-Zone system\u003c\/h3\u003e\n\u003cp\u003eAre you considering a \u003cstrong\u003e48,000 BTU SENVILLE R454B 3-zone heat pump\u003c\/strong\u003e for your home, duplex, or business?\u003c\/p\u003e\n\u003cp\u003eContact \u003cstrong\u003eAirGreen\u003c\/strong\u003e for a project assessment. We can analyze the needs of each of the three zones, check the electrical supply, select the appropriate indoor-unit combination, plan the refrigerant-line routes, and confirm the applicable financial incentives.\u003c\/p\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003emulti-zone heat pump installations in Montreal, Laval, Longueuil, the North Shore, the South Shore, and Montérégie\u003c\/strong\u003e, with particular attention to sizing, installation quality, and winter operation.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120040063268,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_3_ZONES_SENVILLE_R454B_48000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057776"},{"product_id":"thermopompe-4-zones-senville-r454b-27000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 27000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eUp to four zones on a single outdoor unit: a highly appealing multi-zone solution when several rooms need to be heated and cooled independently\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e4-zone heat pump\u003c\/strong\u003e is not simply a large wall-mounted heat pump with several heads added to it. Sizing, capacity distribution among the rooms, total refrigerant piping length, and how occupants use each zone become critical.\u003c\/p\u003e\n\u003cp\u003eThe system presented here is based on the \u003cstrong\u003eSENVILLE SENA-28HF-MOA\u003c\/strong\u003e outdoor unit, operating with \u003cstrong\u003eR-454B\u003c\/strong\u003e, with a commercial capacity of approximately \u003cstrong\u003e27,000 to 28,000 BTU\u003c\/strong\u003e depending on the technical source used. Senville documentation confirms that this outdoor unit supports \u003cstrong\u003e2 to 4 zones\u003c\/strong\u003e, making it possible to create a true four-zone configuration with compatible indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, this type of system is particularly relevant in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e when a property has several bedrooms or distinct spaces that cannot be properly served by a single wall-mounted head.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product page associates this unit with the following specifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-28HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum configuration: 4 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735314\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplayed cooling capacity: 27,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER: 12.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF: 10.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 220 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 61 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplayed provincial rebate: $3,600\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630061\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe manufacturer documentation provided lists \u003cstrong\u003e28,000 nominal BTU\u003c\/strong\u003e, a \u003cstrong\u003eSEER of 23.8\u003c\/strong\u003e, an \u003cstrong\u003eEER of 12.5\u003c\/strong\u003e, and an \u003cstrong\u003eHSPF4 of 10.5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e This slight difference between 27,000 and 28,000 BTU, or between SEER 23.0 and 23.8, should simply be attributed to the exact certified combination used on the AirGreen product page.\u003c\/p\u003e\n\u003ch3\u003eThe attached brochure shows two zones, but the SENA-28HF-MOA unit can support four\u003c\/h3\u003e\n\u003cp\u003eThe brochure’s first page commercially presents a \u003cstrong\u003edual-zone\u003c\/strong\u003e configuration, with two indoor units of \u003cstrong\u003e12,000 BTU each\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis could give the impression that the SENA-28HF-MOA is only a 2-zone system. However, the technical table clarifies the point: \u003cstrong\u003eNumber of Zones: 2–4\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor this article about a \u003cstrong\u003eSENVILLE 4-zone heat pump\u003c\/strong\u003e, we are therefore referring to this outdoor unit’s ability to power up to four compatible indoor units.\u003c\/p\u003e\n\u003cp\u003eHowever, the brochure provided does not specify the exact combination of the four heads that will be used on the AirGreen listing. We should therefore not invent four precise indoor capacities. They must be selected according to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe heat load of each room;\u003c\/li\u003e\n\u003cli\u003ethe combinations authorized by Senville;\u003c\/li\u003e\n\u003cli\u003ethe admissible total connected capacity;\u003c\/li\u003e\n\u003cli\u003ethe certification applicable to the complete combination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe main advantage of a 4-zone system: no longer forcing a single head to condition the entire home\u003c\/h3\u003e\n\u003cp\u003eWe regularly encounter properties where a wall-mounted heat pump is installed in the living room in the hope that it will also cool the bedrooms farther away.\u003c\/p\u003e\n\u003cp\u003eIn an open area, this can sometimes work properly.\u003c\/p\u003e\n\u003cp\u003eIn a home with multiple doors, a hallway, and separate bedrooms, air circulation becomes much more limited.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e4-zone\u003c\/strong\u003e configuration, by contrast, allows an indoor unit to be installed in each strategic area. For example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone unit for the living room;\u003c\/li\u003e\n\u003cli\u003eone for the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone for two bedrooms or an upstairs area, depending on the layout;\u003c\/li\u003e\n\u003cli\u003eone for the basement or an office.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach zone then gets its own temperature control.\u003c\/p\u003e\n\u003cp\u003eFor a home in \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e, this approach can be much more comfortable than a single large heat pump installed in a central area.\u003c\/p\u003e\n\u003ch3\u003eFour independent zones do not mean four independent compressors\u003c\/h3\u003e\n\u003cp\u003eThis is one of the most important concepts to understand about a multi-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eEach head can have its own setting, but the four indoor units share \u003cstrong\u003ethe same SENA-28HF-MOA outdoor unit\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure lists a rated cooling capacity of approximately \u003cstrong\u003e28,000 BTU\/h\u003c\/strong\u003e, with an operating range of approximately \u003cstrong\u003e9,838 to 30,438 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn heating mode, the rated capacity is also listed at \u003cstrong\u003e28,000 BTU\/h\u003c\/strong\u003e, with a range of approximately \u003cstrong\u003e8,218 to 31,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe compressor therefore does not produce 27,000 or 28,000 BTUs for each of the four heads.\u003c\/p\u003e\n\u003cp\u003eIt distributes its available capacity according to the demands of the different zones.\u003c\/p\u003e\n\u003ch3\u003eWhy sizing each indoor head is crucial\u003c\/h3\u003e\n\u003cp\u003eSuppose a homeowner has four rooms of very different sizes.\u003c\/p\u003e\n\u003cp\u003eInstalling four identical indoor units solely to simplify ordering would rarely be the best strategy.\u003c\/p\u003e\n\u003cp\u003eA 150 sq. ft. bedroom and a 500 sq. ft. open living area do not have the same load.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore want to determine:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ehow many BTUs are actually needed in each zone;\u003c\/li\u003e\n\u003cli\u003ewhether the four units can be combined with the SENA-28HF-MOA;\u003c\/li\u003e\n\u003cli\u003ewhether the total connected capacity remains compliant;\u003c\/li\u003e\n\u003cli\u003ewhether the distribution will remain logical when several zones simultaneously require their full capacity.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis step is particularly important for a multi-zone system because a sizing error in one room can affect overall operation.\u003c\/p\u003e\n\u003ch3\u003eSEER from 23 to 23.8: an appealing efficiency for a multi-zone system\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet lists a \u003cstrong\u003eSEER of 23.0\u003c\/strong\u003e, while the brochure table gives \u003cstrong\u003e23.8\u003c\/strong\u003e for the SENA-28HF-MOA. The \u003cstrong\u003e12.5\u003c\/strong\u003e EER is consistent across the information provided. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a system that can supply four zones, this efficiency is particularly relevant.\u003c\/p\u003e\n\u003cp\u003eA properly used multi-zone system also makes it possible to concentrate comfort where it is actually needed.\u003c\/p\u003e\n\u003cp\u003eIf occupants mainly use two rooms during the day, it is not essential to maintain exactly the same setpoint in all four zones.\u003c\/p\u003e\n\u003cp\u003eThis approach may be worthwhile in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large house;\u003c\/li\u003e\n\u003cli\u003ea duplex;\u003c\/li\u003e\n\u003cli\u003ea multi-bedroom condo;\u003c\/li\u003e\n\u003cli\u003ea partially occupied basement;\u003c\/li\u003e\n\u003cli\u003ea home office;\u003c\/li\u003e\n\u003cli\u003ecertain small commercial spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHeating down to -30 °C: a true cold-climate heat pump\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE is identified as \u003cstrong\u003eCold Climate\u003c\/strong\u003e, and the brochure states that it operates in heating mode down to \u003cstrong\u003e-22 °F, or -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet provides much more useful capacities for understanding its winter performance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e30,000 BTU\/h at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e27,000 BTU\/h at -15 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e14,000 BTU\/h maximum at -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe stated COP is approximately \u003cstrong\u003e2.36 at -8 °C\u003c\/strong\u003e and \u003cstrong\u003e1.26 at -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThese figures clearly show why we never simply say that a heat pump “works at -30 °C.”\u003c\/p\u003e\n\u003cp\u003eIt can continue heating at this temperature, but its maximum capacity then drops to approximately \u003cstrong\u003e14,000 BTU\/h\u003c\/strong\u003e according to AirGreen data.\u003c\/p\u003e\n\u003ch3\u003eAt -15 °C, the capacity remains close to the system’s rated capacity.\u003c\/h3\u003e\n\u003cp\u003eThe figure of \u003cstrong\u003e27,000 BTU\/h at -15 °C\u003c\/strong\u003e is particularly important in the Quebec context.\u003c\/p\u003e\n\u003cp\u003eAt this temperature, the unit may still provide a capacity comparable to its advertised rated output.\u003c\/p\u003e\n\u003cp\u003eFor an installation in \u003cstrong\u003eMontréal, Laval, Longueuil, Boucherville, or the North Shore\u003c\/strong\u003e, this behavior is often more economically relevant than the performance observed during a few extremely cold hours at -30 °C.\u003c\/p\u003e\n\u003cp\u003eWe want to know what proportion of the heating season can be effectively covered by the heat pump before backup systems become necessary.\u003c\/p\u003e\n\u003ch3\u003eA four-zone configuration requires consideration of simultaneous operation in winter\u003c\/h3\u003e\n\u003cp\u003eConsider four zones that all require substantial heating on a January morning.\u003c\/p\u003e\n\u003cp\u003eThe outdoor unit has a specified overall capacity. It must therefore distribute that capacity among all the indoor heads calling for heat.\u003c\/p\u003e\n\u003cp\u003eThat is why a homeowner should not simply add the rated capacities listed for the four indoor units and consider that total to be the system's guaranteed output.\u003c\/p\u003e\n\u003cp\u003eThe actual maximum output depends on the outdoor unit, the temperature, and the installed combination.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and a $3,600 provincial rebate\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR ID: 3630061\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eas well as an \u003cstrong\u003eadvertised provincial rebate of $3,600\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer's brochure also identifies the series as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e and highlights operation down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs always, rebate programs must be confirmed at the time of quotation.\u003c\/p\u003e\n\u003cp\u003eOn a multi-zone system, this verification is particularly important because eligibility may depend not only on the outdoor unit, but also on the \u003cstrong\u003eexact combination of indoor units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA 1,300-to-1,500-square-foot recommendation to use with caution\u003c\/h3\u003e\n\u003cp\u003eSenville indicates an approximate range of \u003cstrong\u003e1,300 to 1,500 sq. ft.\u003c\/strong\u003e for the configuration presented in its brochure. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, it should be noted that this commercial page shows a \u003cstrong\u003edual-zone 12,000 + 12,000 BTU\u003c\/strong\u003e configuration.\u003c\/p\u003e\n\u003cp\u003eWe therefore should not automatically take this floor area and present it as an absolute rule for every four-zone configuration.\u003c\/p\u003e\n\u003cp\u003eFour small, well-insulated zones may have a different load from four rooms in an older building with a lot of fenestration.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we use floor area as a starting point, never as the final calculation.\u003c\/p\u003e\n\u003ch2\u003eInstallation details that become critical when a single outdoor unit supplies four zones\u003c\/h2\u003e\n\u003ch3\u003eA precharge that can cover up to 100 feet of piping\u003c\/h3\u003e\n\u003cp\u003eThe SENA-28HF-MOA contains approximately \u003cstrong\u003e120.61 oz of R-454B\u003c\/strong\u003e, and the documentation indicates a refrigerant precharge designed for up to \u003cstrong\u003e100 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also mentions this 100-foot precharge in its product presentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a four-zone system, this detail deserves particular attention because the lengths add up quickly.\u003c\/p\u003e\n\u003cp\u003eIf the outdoor unit is located at ground level and several indoor heads are on different floors or façades, the project's total length can become considerable.\u003c\/p\u003e\n\u003cp\u003eWe must therefore calculate precisely:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe length of each circuit;\u003c\/li\u003e\n\u003cli\u003ethe total length;\u003c\/li\u003e\n\u003cli\u003ethe height differences;\u003c\/li\u003e\n\u003cli\u003ethe fittings;\u003c\/li\u003e\n\u003cli\u003ethe additional charge requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe “1\/4 – 3\/8” data must not be used as a complete piping plan\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003e1\/4 in – 3\/8 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eOn a 4-zone system, this general information is not enough to determine the diameter of each branch without knowing which indoor units have been selected.\u003c\/p\u003e\n\u003cp\u003eWe always validate the connections port by port according to the actual combination.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important when heads with different capacities are combined on the same outdoor unit.\u003c\/p\u003e\n\u003ch3\u003eEach indoor head produces its own condensate\u003c\/h3\u003e\n\u003cp\u003eFour zones potentially mean \u003cstrong\u003efour separate drains\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn a simple installation, we can often use gravity drainage.\u003c\/p\u003e\n\u003cp\u003eIn a more complex home, some heads may require a much longer route or a specialized solution when a natural slope is impossible.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan the drainage at the same time as the refrigerant lines.\u003c\/p\u003e\n\u003cp\u003eAn installation where the pipes are properly installed but the condensate cannot drain correctly is still a poor installation.\u003c\/p\u003e\n\u003ch3\u003eAutomatic vertical and horizontal louvers\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003eautomatic vertical and horizontal louvers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn a four-indoor-unit system, this helps direct the airflow independently in each space.\u003c\/p\u003e\n\u003cp\u003eHowever, even with motorized louvers, the location of each head remains essential.\u003c\/p\u003e\n\u003cp\u003eWe try to avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ean unit blowing directly onto the bed;\u003c\/li\u003e\n\u003cli\u003ea head hidden behind a beam or partition;\u003c\/li\u003e\n\u003cli\u003ean installation oriented toward a door rather than the room;\u003c\/li\u003e\n\u003cli\u003ean indoor unit installed too close to the ceiling without adequate clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBe careful with the figure of 2,130 CFM: it refers to the outdoor airflow\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications mention approximately \u003cstrong\u003e2,130 CFM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer’s table specifies that this value of \u003cstrong\u003e2,129.41 CFM corresponds to the maximum airflow of the outdoor unit\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is not the combined airflow of the four indoor units.\u003c\/p\u003e\n\u003cp\u003eThis distinction is important to avoid confusion in the product specifications.\u003c\/p\u003e\n\u003cp\u003eThe outdoor unit must be able to freely draw in and discharge this volume of air. It therefore must not be installed in an overly enclosed space or behind an excessively restrictive decorative structure.\u003c\/p\u003e\n\u003ch3\u003e61 dB(A) outdoors\u003c\/h3\u003e\n\u003cp\u003eThe stated outdoor sound level is \u003cstrong\u003e61 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a multizone unit of this capacity, the location therefore deserves careful consideration.\u003c\/p\u003e\n\u003cp\u003eWe specifically consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ebedroom windows;\u003c\/li\u003e\n\u003cli\u003ethe deck;\u003c\/li\u003e\n\u003cli\u003eneighboring properties;\u003c\/li\u003e\n\u003cli\u003ewalls that may reflect noise;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003emunicipal regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe shortest piping route is not always the best choice if the unit ends up directly below a bedroom.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing 168 lb\u003c\/h3\u003e\n\u003cp\u003eThe dimensions are:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 in × 16.14 in × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003efor a weight of approximately \u003cstrong\u003e168.43 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA solid installation is therefore essential.\u003c\/p\u003e\n\u003cp\u003eDepending on the property, we can use a suitable base or support, taking snow, access, and long-term stability into account.\u003c\/p\u003e\n\u003ch3\u003e208\/230 V, MCA 30 A, and maximum protection of 35 A\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003esingle-phase;\u003c\/li\u003e\n\u003cli\u003e60 Hz;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003emaximum fuse: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003econnection wiring: \u003cstrong\u003e14\/4 AWG\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information is consistent with the AirGreen specification sheet.\u003c\/p\u003e\n\u003cp\u003eBefore installation, however, we must confirm the panel's actual capacity and the project's specific electrical requirements.\u003c\/p\u003e\n\u003ch3\u003eWiFi included and independent zone control\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003eWiFi included\u003c\/strong\u003e, and the brochure confirms smart control through Alexa or an app for the system presented. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith four zones, this feature becomes particularly useful.\u003c\/p\u003e\n\u003cp\u003eFor example, a homeowner can maintain a different temperature in a bedroom than in the living room and reduce operation in an unused office over the weekend.\u003c\/p\u003e\n\u003cp\u003eThe true value of a multi-zone system appears precisely when this independence is used instead of setting all the units to the same temperature year-round.\u003c\/p\u003e\n\u003ch3\u003eAn interesting user review about comfort, but also about connectivity\u003c\/h3\u003e\n\u003cp\u003eThe brochure contains a review from a verified Canadian buyer stating that the system made their home comfortable during the summer. However, they mention not using certain connected features as intended. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis illustrates a practical point: the WiFi must be configured correctly, and the user must understand the necessary accessories and applications.\u003c\/p\u003e\n\u003cp\u003eDuring an AirGreen installation, commissioning should therefore not be limited to checking that the compressor starts.\u003c\/p\u003e\n\u003ch3\u003eWarranty: the AirGreen specification sheet and the brochure do not provide exactly the same coverage\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates a warranty:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ewith the possibility of additional warranty coverage.\u003c\/p\u003e\n\u003cp\u003eThe Senville documentation provided, for its part, states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table lists the same coverage: 10 years on the compressor and 5 years on parts. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIf AirGreen benefits from a special program offering 10 years on parts, it is best to confirm this clearly in the quote and on the final specification sheet.\u003c\/p\u003e\n\u003ch3\u003eA Scenario Where Four Zones Make Much More Sense Than One Large Indoor Unit\u003c\/h3\u003e\n\u003cp\u003eConsider a two-storey house with three bedrooms and an open main living area.\u003c\/p\u003e\n\u003cp\u003eWith a single high-capacity unit in the living room, the bedrooms can remain uncomfortable when their doors are closed.\u003c\/p\u003e\n\u003cp\u003eA four-zone system can allow:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone unit for the main living area;\u003c\/li\u003e\n\u003cli\u003eone unit for the primary bedroom;\u003c\/li\u003e\n\u003cli\u003etwo additional units for bedrooms or separate spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe outdoor unit remains a single unit, but air distribution becomes much more precise.\u003c\/p\u003e\n\u003cp\u003eThis is exactly the type of project where a \u003cstrong\u003e4-zone heat pump in Montreal, Laval, or Longueuil\u003c\/strong\u003e can offer a tangible advantage.\u003c\/p\u003e\n\u003ch3\u003eWhen Two Independent Heat Pumps May Nonetheless Be Preferable\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system is not automatically better.\u003c\/p\u003e\n\u003cp\u003eTwo separate systems may be appropriate if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe zones are very far apart;\u003c\/li\u003e\n\u003cli\u003ethe building consists of two separate dwellings;\u003c\/li\u003e\n\u003cli\u003eredundancy is a priority;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant line runs become excessively complex.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a multi-zone system, a single outdoor unit serves all the zones. A failure of this unit can therefore affect several rooms at once.\u003c\/p\u003e\n\u003cp\u003eWe always compare this reality with the benefits of a cleaner-looking exterior façade and a single condenser.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose AirGreen for a SENVILLE 4-Zone Installation\u003c\/h3\u003e\n\u003cp\u003eA four-zone installation requires much more planning than a single-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we check:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe heating load of each of the four zones;\u003c\/li\u003e\n\u003cli\u003ecompatible indoor capacities;\u003c\/li\u003e\n\u003cli\u003ethe certified combination with the \u003cstrong\u003eSENA-28HF-MOA\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethe length of each line set;\u003c\/li\u003e\n\u003cli\u003ethe total refrigerant charge;\u003c\/li\u003e\n\u003cli\u003edrainage for each indoor unit;\u003c\/li\u003e\n\u003cli\u003ewall penetrations;\u003c\/li\u003e\n\u003cli\u003ethe outdoor location;\u003c\/li\u003e\n\u003cli\u003ethe 208\/230 V power supply;\u003c\/li\u003e\n\u003cli\u003efuture maintenance needs;\u003c\/li\u003e\n\u003cli\u003ethe certification and applicable subsidy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003emulti-zone heat pump projects in Montreal, Laval, Longueuil, on the South Shore, the North Shore, and in Montérégie\u003c\/strong\u003e, with particular attention to airflow and the actual sizing of each room.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-28HF-MOA R454B\u003c\/strong\u003e offers very appealing features for this type of project: \u003cstrong\u003eup to four zones, ENERGY STAR, Cold Climate, heating down to -30 °C, high seasonal efficiency, WiFi, inverter modulation, and a refrigerant charge suitable for lines up to 100 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen to get a quote for the SENVILLE R454B 27,000 BTU 4-zone heat pump, determine the right capacities for each of your rooms, and confirm the applicable subsidy in Montreal, Laval, Longueuil, on the South Shore or the North Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120040096036,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_27000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057786"},{"product_id":"thermopompe-4-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 36000 BTU","description":"\u003ch2\u003eA 36,000 BTU multi-zone solution for distributing comfort across four rooms without multiplying the number of outdoor units\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 36,000 BTU 4-Zone Heat Pump\u003c\/strong\u003e addresses a problem we regularly encounter at AirGreen in homes, condos, duplexes, and small buildings in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e: several rooms need independent temperature control, but installing three or four outdoor units on the property would be cumbersome, unattractive, or simply impossible.\u003c\/p\u003e\n\u003cp\u003eThe heart of the system is the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e outdoor unit. Its technical specifications indicate that it can supply \u003cstrong\u003etwo to five zones\u003c\/strong\u003e, making it fully compatible with a project involving four indoor units when the selected combination complies with the manufacturer's limits. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis flexibility is particularly valuable in a home with multiple bedrooms, a floor divided into offices, a duplex where certain zones are difficult to balance, or a ground floor and upper floor with very different heating and cooling needs.\u003c\/p\u003e\n\u003cp\u003eInstead of trying to move air from a single wall-mounted head through doors, corridors, and stairways, we can distribute the available capacity directly where it is needed.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen configuration notably features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-36HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735317\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated capacity: 36,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 13.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.7\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eheating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003epower supply \u003cstrong\u003e220 V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level: \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003emax outdoor airflow: approximately \u003cstrong\u003e3,038 CFM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003edisplayed provincial rebate: \u003cstrong\u003e4 560 $\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe official brochure confirms that the SENA-36HF-MOA has a capacity of 36,000 BTU, a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e, an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e, an \u003cstrong\u003eHSPF2 Region 4 of 10.7\u003c\/strong\u003e, a 208\/230 V power supply, and compatibility with \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThe brochure shows two zones, but the outdoor unit can support up to five.\u003c\/h3\u003e\n\u003cp\u003eThe first page of the documentation presents a commercial configuration in \u003cstrong\u003edual zone\u003c\/strong\u003e, with two 18,000 BTU indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis image can be confusing if you look only at the photo.\u003c\/p\u003e\n\u003cp\u003eThe most important information is found in the technical table: the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e outdoor model is designed for \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis means that a four-zone system is entirely possible, but the compatible indoor units must be selected and the combinations approved by Senville must be followed.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we never design a multi-zone system by arbitrarily adding four heads.\u003c\/p\u003e\n\u003cp\u003eWe check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe capacity required by each room;\u003c\/li\u003e\n\u003cli\u003ethe compatible indoor models;\u003c\/li\u003e\n\u003cli\u003ethe sum of the connected rated capacities;\u003c\/li\u003e\n\u003cli\u003ethe manufacturer’s combination limits;\u003c\/li\u003e\n\u003cli\u003epiping lengths;\u003c\/li\u003e\n\u003cli\u003ethe available capacity when multiple zones simultaneously require heating or cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e36,000 BTU does not mean 9,000 BTU guaranteed in each of the four rooms\u003c\/h3\u003e\n\u003cp\u003eThis is an essential point to understand before purchasing a \u003cstrong\u003efour-zone heat pump\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe system does not automatically divide 36,000 BTU into four fixed 9,000-BTU portions.\u003c\/p\u003e\n\u003cp\u003eCapacity is dynamically shared among the indoor units according to their demands.\u003c\/p\u003e\n\u003cp\u003eThe brochure states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU\/h of rated cooling capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling range of \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU\/h of rated heating capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating range of \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis modulation range allows the inverter compressor to adjust its output.\u003c\/p\u003e\n\u003cp\u003eIf only two small bedrooms need cooling, the system can operate at a lower capacity. If several zones require substantial heating at the same time, it increases its output within the available limits.\u003c\/p\u003e\n\u003cp\u003eThis is precisely the behavior that makes a multi-zone platform appealing.\u003c\/p\u003e\n\u003ch3\u003eA concrete example: four rooms that never have exactly the same needs\u003c\/h3\u003e\n\u003cp\u003eLet’s take a typical \u003cstrong\u003eSouth Shore\u003c\/strong\u003e home with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea primary bedroom on the second floor;\u003c\/li\u003e\n\u003cli\u003etwo secondary bedrooms;\u003c\/li\u003e\n\u003cli\u003ean office on the ground floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe west-facing bedroom can become very hot around 4 p.m. in July, while the north-facing office remains relatively cool.\u003c\/p\u003e\n\u003cp\u003eIn the evening, the situation changes: the office is no longer in use, but the three bedrooms need to be comfortable for the night.\u003c\/p\u003e\n\u003cp\u003eA four-zone system concentrates capacity where it is actually needed rather than sending exactly the same amount of air everywhere.\u003c\/p\u003e\n\u003ch3\u003eWhy four zones can be more effective than one very large head\u003c\/h3\u003e\n\u003cp\u003eA common mistake is to believe that a high-capacity wall-mounted unit installed in a hallway can serve an entire floor.\u003c\/p\u003e\n\u003cp\u003eOn paper, the BTUs may seem sufficient.\u003c\/p\u003e\n\u003cp\u003eIn reality, doors and walls limit air circulation.\u003c\/p\u003e\n\u003cp\u003eA 24,000- or 36,000-BTU head can cool the hallway perfectly while leaving a closed bedroom too warm.\u003c\/p\u003e\n\u003cp\u003eWith four indoor units, the system directly serves the rooms.\u003c\/p\u003e\n\u003cp\u003eThis improves:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edistribution;\u003c\/li\u003e\n\u003cli\u003etemperature precision;\u003c\/li\u003e\n\u003cli\u003enighttime comfort;\u003c\/li\u003e\n\u003cli\u003eflexibility of use;\u003c\/li\u003e\n\u003cli\u003eroom-by-room control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSEER2 of 23: highly attractive seasonal efficiency for a multi-zone system\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a 36,000 BTU multizone heat pump, this efficiency level is particularly noteworthy.\u003c\/p\u003e\n\u003cp\u003eENERGY STAR certification is also indicated in the Senville presentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA high SEER2 means that, over the entire cooling season, the unit can provide substantial cooling relative to the electrical energy consumed.\u003c\/p\u003e\n\u003cp\u003eHowever, this figure should not be turned into a promise about the electricity bill.\u003c\/p\u003e\n\u003cp\u003eActual consumption depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ewindow orientation;\u003c\/li\u003e\n\u003cli\u003ethe requested temperature;\u003c\/li\u003e\n\u003cli\u003ethe number of active zones;\u003c\/li\u003e\n\u003cli\u003eoccupancy habits;\u003c\/li\u003e\n\u003cli\u003eoutdoor conditions;\u003c\/li\u003e\n\u003cli\u003ethe quality of the installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHSPF2 of 10.7 and operation down to -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA belongs to the \u003cstrong\u003eCold Climate\u003c\/strong\u003e system category.\u003c\/p\u003e\n\u003cp\u003eThe brochure states that it provides heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e and describes this series as optimized for cold climates. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specifications provide particularly interesting data at winter temperatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e38,000 BTU\/h at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e36,000 BTU\/h at -15 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eup to \u003cstrong\u003e22,400 BTU\/h at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe stated COP is approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.12 at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e1.47 at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information is more useful than simply stating “operates down to -30 °C.”\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the system continues to heat, but its available capacity is lower than when the outdoor temperature is higher.\u003c\/p\u003e\n\u003ch3\u003eWhy multizone heating must be calculated room by room\u003c\/h3\u003e\n\u003cp\u003eWith a four-zone system, we do not want to know only whether the outdoor unit can produce 22,400 BTU at -30 °C.\u003c\/p\u003e\n\u003cp\u003eWe need to determine how these BTUs will be distributed.\u003c\/p\u003e\n\u003cp\u003eIf all four rooms require substantial heating at the same time, the total available capacity must be shared.\u003c\/p\u003e\n\u003cp\u003eFor an older home in \u003cstrong\u003eMontreal\u003c\/strong\u003e, with less efficient windows and colder walls, this simultaneity can become important during severe cold.\u003c\/p\u003e\n\u003cp\u003eThat is why we assess the heat loss of each zone before recommending the indoor-unit combination.\u003c\/p\u003e\n\u003ch3\u003eThe major advantage of a four-zone system: individual room control\u003c\/h3\u003e\n\u003cp\u003eIn a family home, not all rooms should necessarily operate at the same temperature.\u003c\/p\u003e\n\u003cp\u003eA child's bedroom can be set differently from the office. A guest room can remain at a more economical setpoint when unused. A sun-exposed space may require more cooling than the others.\u003c\/p\u003e\n\u003cp\u003eWith a \u003cstrong\u003efour-zone SENVILLE heat pump\u003c\/strong\u003e, each indoor unit has its own control.\u003c\/p\u003e\n\u003cp\u003eWi-Fi is included according to the AirGreen specifications, while the documentation describes integration with Alexa and the Senville app for scheduling and remote control. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis function becomes truly useful when several rooms need to be managed separately.\u003c\/p\u003e\n\u003ch3\u003eAn important limitation: the zones share the same general mode\u003c\/h3\u003e\n\u003cp\u003eA conventional residential multi-zone system shares the same outdoor unit.\u003c\/p\u003e\n\u003cp\u003eTherefore, one should not expect one bedroom to be in cooling mode while another simultaneously requests heating.\u003c\/p\u003e\n\u003cp\u003eThe zones may have different temperatures, but they must operate in a compatible mode.\u003c\/p\u003e\n\u003cp\u003eThis reality is important during the shoulder seasons, particularly in spring or fall, when a sunny room may overheat while another remains cool.\u003c\/p\u003e\n\u003ch3\u003eAutomatic louvers and air distribution in each room\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eautomatic vertical\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eautomatic horizontal\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis function improves the distribution of the air stream, but the location of each head remains critical.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we aim in particular to avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea direct stream of air onto a bed;\u003c\/li\u003e\n\u003cli\u003eair blowing directly onto a desk;\u003c\/li\u003e\n\u003cli\u003ea head installed too close to a ceiling;\u003c\/li\u003e\n\u003cli\u003ea position that blocks the air coverage;\u003c\/li\u003e\n\u003cli\u003ean installation that makes maintenance more difficult.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, the best position is not always the easiest one for the piping. We therefore need to find a compromise between performance, aesthetics, and route simplicity.\u003c\/p\u003e\n\u003ch2\u003eA four-zone installation is won mainly through planning the lines, drains, and outdoor unit.\u003c\/h2\u003e\n\u003ch3\u003eA precharge of up to 125 feet\u003c\/h3\u003e\n\u003cp\u003eThe documentation indicates that the SENA-36HF-MOA contains approximately \u003cstrong\u003e134.04 oz of R-454B\u003c\/strong\u003e and is precharged for a total length of up to \u003cstrong\u003e125 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a four-zone project, this information is important.\u003c\/p\u003e\n\u003cp\u003eFour heads can quickly generate a significant total piping length.\u003c\/p\u003e\n\u003cp\u003eSuppose:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 feet for the first zone;\u003c\/li\u003e\n\u003cli\u003e25 feet for the second;\u003c\/li\u003e\n\u003cli\u003e35 feet for the third;\u003c\/li\u003e\n\u003cli\u003e30 feet for the fourth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe total already reaches 110 feet.\u003c\/p\u003e\n\u003cp\u003eThat is why we calculate the lengths before installation rather than afterward.\u003c\/p\u003e\n\u003ch3\u003eR-454B: a new standard that requires proper installation\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis A2L refrigerant requires appropriate practices during HVAC commissioning and servicing.\u003c\/p\u003e\n\u003cp\u003eA professional installation includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eproper line preparation;\u003c\/li\u003e\n\u003cli\u003ecompliant connections;\u003c\/li\u003e\n\u003cli\u003eleak tests;\u003c\/li\u003e\n\u003cli\u003evacuuming;\u003c\/li\u003e\n\u003cli\u003ecorrect charge;\u003c\/li\u003e\n\u003cli\u003efinal operation check.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a four-zone system, the number of connections is greater than in a single-zone system, making the quality of the refrigeration work even more important.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in – 1\/2 in piping\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates connection sizes of \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe route must be planned to avoid an accumulation of visible line-hide on the façades.\u003c\/p\u003e\n\u003cp\u003eIn an installation in Montréal or Longueuil, we can sometimes group several runs along the same vertical line and then distribute them to the different rooms.\u003c\/p\u003e\n\u003cp\u003eThis method often improves the exterior appearance.\u003c\/p\u003e\n\u003ch3\u003eFour heads also mean four drains\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit produces condensate in cooling mode.\u003c\/p\u003e\n\u003cp\u003eA four-zone system may therefore require up to four separate drainage runs.\u003c\/p\u003e\n\u003cp\u003eIt is a detail that quickly becomes critical.\u003c\/p\u003e\n\u003cp\u003eWe try to prioritize gravity drains when the configuration allows.\u003c\/p\u003e\n\u003cp\u003ePoor planning may require several condensate pumps, which adds:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003enoise;\u003c\/li\u003e\n\u003cli\u003emechanical parts;\u003c\/li\u003e\n\u003cli\u003emaintenance;\u003c\/li\u003e\n\u003cli\u003erisk of blockages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, a pump that starts regularly during the night can be much more disruptive than expected.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing more than 200 lb\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies for the outdoor unit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edimensions: \u003cstrong\u003e38.58 × 16.34 × 38.39 in\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eweight: approximately \u003cstrong\u003e211.86 lb\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emaximum outdoor airflow: \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level: \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis is therefore not a small outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIts base or support must be suitable for its weight and Québec's winter conditions.\u003c\/p\u003e\n\u003cp\u003eWe also check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003esnow accumulation;\u003c\/li\u003e\n\u003cli\u003edefrost water;\u003c\/li\u003e\n\u003cli\u003edistance from windows;\u003c\/li\u003e\n\u003cli\u003eproximity to the neighbor;\u003c\/li\u003e\n\u003cli\u003eaccessibility for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e65 dB(A): location matters\u003c\/h3\u003e\n\u003cp\u003eAn outdoor sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e deserves particular attention.\u003c\/p\u003e\n\u003cp\u003eOn a property with a large lot, the impact may be limited.\u003c\/p\u003e\n\u003cp\u003eIn a densely populated Montréal neighborhood or in certain areas of \u003cstrong\u003eLongueuil\u003c\/strong\u003e, the distance from windows, patios, and neighbors is often much smaller.\u003c\/p\u003e\n\u003cp\u003eWe therefore try to avoid installing it directly beneath a bedroom window or too close to a patio used in the evening.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and MOP 40 A\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emaximum protection: 40 A\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003epower supply: \u003cstrong\u003e208\/230 V single-phase\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe electrical circuit must be sized according to the nameplate data and applicable requirements.\u003c\/p\u003e\n\u003cp\u003eIn a home already heavily loaded by baseboard heaters, a water heater, a stove, and an electric vehicle charging station, we check the available capacity before confirming the work.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eThe documentation also presents \u003cstrong\u003ebuilt-in diagnostic and refrigerant leak detection functions\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a four-zone system, this function is useful because the refrigeration network has more fittings and components.\u003c\/p\u003e\n\u003cp\u003eHowever, it does not replace a diagnosis by a refrigeration technician.\u003c\/p\u003e\n\u003cp\u003eA drop in performance in a single zone may be related to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea sensor;\u003c\/li\u003e\n\u003cli\u003ea fan motor;\u003c\/li\u003e\n\u003cli\u003ean electronic problem;\u003c\/li\u003e\n\u003cli\u003ea refrigerant charge;\u003c\/li\u003e\n\u003cli\u003ea fitting;\u003c\/li\u003e\n\u003cli\u003ea drain;\u003c\/li\u003e\n\u003cli\u003ea communication error.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe 1,800 sq. ft. area shown in the brochure must be interpreted correctly\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates that the SENA-36HF\/D configuration can cover up to approximately \u003cstrong\u003e1,800 sq. ft.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis information should not be interpreted as an automatic rule.\u003c\/p\u003e\n\u003cp\u003eA well-insulated 1,800 sq. ft. newer home may have a very different heating load from an old duplex of the same size.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we consider in particular:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003enumber of windows;\u003c\/li\u003e\n\u003cli\u003esolar orientation;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003ewall exposure;\u003c\/li\u003e\n\u003cli\u003econstruction type;\u003c\/li\u003e\n\u003cli\u003enumber of floors;\u003c\/li\u003e\n\u003cli\u003edesired temperature;\u003c\/li\u003e\n\u003cli\u003eoccupancy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRealistic example of a four-zone project\u003c\/h3\u003e\n\u003cp\u003eA common scenario would be a two-story home where the owners want:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eone unit in the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone unit in a second bedroom;\u003c\/li\u003e\n\u003cli\u003eone unit in the office;\u003c\/li\u003e\n\u003cli\u003eone unit in the large living-dining area.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIn this case, the living room head may require more capacity than those in the bedrooms.\u003c\/p\u003e\n\u003cp\u003eWe would therefore not necessarily choose four identical units.\u003c\/p\u003e\n\u003cp\u003eThe combination can be adapted to the actual needs of each space, subject to compatibility with the SENA-36HF-MOA.\u003c\/p\u003e\n\u003ch3\u003eProvincial rebate shown: $4,560\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet currently shows a \u003cstrong\u003e$4,560 provincial rebate\u003c\/strong\u003e for this combination.\u003c\/p\u003e\n\u003cp\u003eIt also states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate\u003c\/strong\u003e certification;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR number \u003cstrong\u003e3630064\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSenville documentation confirms the series’ ENERGY STAR certification and cold-climate positioning. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs always, financial assistance must be verified at the time of the project using the exact combination of indoor and outdoor units.\u003c\/p\u003e\n\u003cp\u003eIn a multi-zone system, this detail is particularly important.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference to be confirmed\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labour\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eHowever, the Senville brochure indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table on page 5 also confirms \u003cstrong\u003e10 years compressor \/ 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference must therefore be confirmed according to the warranty program applicable to the product sold by AirGreen.\u003c\/p\u003e\n\u003ch3\u003eFour single-zone systems or a four-zone system?\u003c\/h3\u003e\n\u003cp\u003eThis is a comparison we often make.\u003c\/p\u003e\n\u003cp\u003eFour single-zone systems provide four independent outdoor units.\u003c\/p\u003e\n\u003cp\u003eA multi-zone system uses a single outdoor unit.\u003c\/p\u003e\n\u003ch4\u003eAdvantages of the four-zone system\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003efewer outdoor units;\u003c\/li\u003e\n\u003cli\u003ebetter aesthetics;\u003c\/li\u003e\n\u003cli\u003eless space occupied;\u003c\/li\u003e\n\u003cli\u003eonly one outdoor unit to maintain;\u003c\/li\u003e\n\u003cli\u003eindependent control of the four rooms;\u003c\/li\u003e\n\u003cli\u003ea particularly interesting solution for façades where space is limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAdvantages of separate single-zone systems\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eeach system is completely independent;\u003c\/li\u003e\n\u003cli\u003ean outdoor-unit failure affects only one zone;\u003c\/li\u003e\n\u003cli\u003esome small single-zone units can offer excellent individual performance;\u003c\/li\u003e\n\u003cli\u003eeach zone has its own dedicated outdoor capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe best choice depends on the building and the owner's priorities.\u003c\/p\u003e\n\u003ch3\u003eThe most common mistake: overloading the indoor capacity because the outdoor unit accepts five zones\u003c\/h3\u003e\n\u003cp\u003eThe fact that the SENA-36HF-MOA can accept \u003cstrong\u003eup to five zones\u003c\/strong\u003e does not mean that any combination of heads can be installed.\u003c\/p\u003e\n\u003cp\u003eThe matching rules must be followed.\u003c\/p\u003e\n\u003cp\u003eFor a four-zone system, we therefore verify the total connected capacity and the manufacturer's limits before finalizing the order.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important for winter heating, when several rooms may require heat simultaneously.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a multi-zone installation\u003c\/h3\u003e\n\u003cp\u003eA four-zone heat pump requires more coordination than a simple wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we plan:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe heating needs of each room;\u003c\/li\u003e\n\u003cli\u003eindoor models;\u003c\/li\u003e\n\u003cli\u003etotal capacity;\u003c\/li\u003e\n\u003cli\u003elow-temperature capacity;\u003c\/li\u003e\n\u003cli\u003epiping lengths;\u003c\/li\u003e\n\u003cli\u003edrains;\u003c\/li\u003e\n\u003cli\u003eexterior aesthetics;\u003c\/li\u003e\n\u003cli\u003eoutdoor-unit support;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003ecommissioning;\u003c\/li\u003e\n\u003cli\u003eeligibility for subsidies;\u003c\/li\u003e\n\u003cli\u003efuture access for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe carry out these installations in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOur assessment of the SENVILLE SENA-36HF-MOA\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE 36,000 BTU platform offers a particularly interesting combination for a property requiring several independent zones:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 to 5 compatible zones\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eperfectly suited to a \u003cstrong\u003e4-zone\u003c\/strong\u003e configuration when properly matched;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU nominal cooling capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU nominal heating capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emodulation up to \u003cstrong\u003e43,000 BTU in cooling\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emodulation up to \u003cstrong\u003e44,000 BTU in heating\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEER2 23\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEER2 13\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSPF2-4 10.7\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoperation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eR-454B;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR;\u003c\/li\u003e\n\u003cli\u003eCold Climate;\u003c\/li\u003e\n\u003cli\u003eWiFi;\u003c\/li\u003e\n\u003cli\u003erefrigerant precharge up to \u003cstrong\u003e125 feet\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emaximum protection of \u003cstrong\u003e40 A\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a home divided into several rooms, it allows the zones to be treated directly rather than trying to force air from a single point.\u003c\/p\u003e\n\u003cp\u003eHowever, the result depends on the quality of the design. A good outdoor unit cannot compensate for improperly sized heads, poorly planned drains, or an incorrect indoor-unit combination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a quote on a SENVILLE 4-zone heat pump, contact AirGreen. We can size each room, verify the combination of indoor units, plan the piping, and confirm the financial incentives available before installation in Montreal, Laval, Longueuil, the North Shore, or the South Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"9 + 9 + 9 + 9","offer_id":56201207251236,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 9 + 12","offer_id":56201207284004,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 9 + 18","offer_id":56201207316772,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 12 + 12","offer_id":56201207349540,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057798"},{"product_id":"thermopompe-4-zones-senville-r454b-48000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 48000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eFour separately controlled spaces with a single condenser: a multi-zone solution designed for homes where air distribution matters just as much as BTUs\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 4-Zone Heat Pump | 48000 BTU\u003c\/strong\u003e addresses a very practical problem we encounter at AirGreen in homes, condos, multiplexes, and small commercial buildings in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e: how can several enclosed rooms be heated and cooled without installing four outdoor units around the building?\u003c\/p\u003e\n\u003cp\u003eWith a Quad-Zone configuration, a single outdoor condenser serves \u003cstrong\u003efour separately controllable indoor units\u003c\/strong\u003e. Senville officially markets its 48,000 BTU platform in a Quad-Zone version under the SENA\/48HF\/Q family. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe heart of the system is the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e outdoor unit, operating with \u003cstrong\u003eR454B\u003c\/strong\u003e. This platform is particularly flexible: the accompanying documentation indicates that it can support \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e, depending on the selected matching system. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the matched system we are discussing here, the reference to retain is \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e. The certified data associated with this number includes \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, \u003cstrong\u003e12 EER2\u003c\/strong\u003e, \u003cstrong\u003e11 HSPF2\u003c\/strong\u003e, a rated cooling capacity of \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e, and a rated heating capacity of \u003cstrong\u003e49,000 BTU\/h\u003c\/strong\u003e. The unit is also listed as a \u003cstrong\u003ecold-climate\u003c\/strong\u003e heat pump. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is therefore useful to immediately understand one distinction: \u003cstrong\u003e48,000 BTU is the system’s commercial class\u003c\/strong\u003e, while the certified capacity of the matched system may be slightly different. At AirGreen, we always rely on the exact AHRI number when comparing models or confirming a rebate.\u003c\/p\u003e\n\u003ch3\u003eThe main features of the SENVILLE 4-Zone 48,000 BTU system\u003c\/h3\u003e\n\u003cp\u003eFor this configuration, the key data includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-48HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConfiguration: 4 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735320\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommercial class: 48,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCertified cooling capacity: 47,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated heating capacity: 49,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 11.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -8 °C: 45,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -15 °C: 47,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum rated capacity at -30 °C: approximately 24,600 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP at -8 °C: approximately 2.6\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum COP at -30 °C: approximately 1.27\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum operating temperature in heating mode: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR Cold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630067\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum protection: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: approximately 65 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 4,503 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAirGreen warranty listed: 10-10-0, with additional protection available\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SENA-48HF-MOA brochure confirms \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, a 208\/230 V power supply, and a voltage range of 187 to 253 V. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA modulation range extending well beyond a simple 48,000 BTU figure\u003c\/h3\u003e\n\u003cp\u003eInverter technology is particularly important in a four-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eThe condenser documentation specifies an approximate cooling range of \u003cstrong\u003e12,000 to 57,000 BTU\/h\u003c\/strong\u003e and a heating range of \u003cstrong\u003e13,000 to 57,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis means the system is not destined to operate continuously at its maximum capacity.\u003c\/p\u003e\n\u003cp\u003eImagine a South Shore home equipped with four heads:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone in the living room;\u003c\/li\u003e\n\u003cli\u003eone in the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone in an office;\u003c\/li\u003e\n\u003cli\u003eone in a second bedroom.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt 2 p.m. in summer, the south-facing living room may require substantial cooling, while the bedrooms are already cool. At 11 p.m., the situation may be reversed: the living room barely needs cooling, while the bedrooms are occupied.\u003c\/p\u003e\n\u003cp\u003eThe compressor can adjust its output to meet the overall demand.\u003c\/p\u003e\n\u003cp\u003eThis modulation allows the system to better manage a home whose different rooms never have exactly the same heating load at the same time.\u003c\/p\u003e\n\u003ch3\u003eFour zones do not mean four compressors\u003c\/h3\u003e\n\u003cp\u003eThis is probably the most important point to understand before purchasing a \u003cstrong\u003e4-Zone heat pump\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEach indoor unit can be controlled separately, but the four heads share:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe same compressor;\u003c\/li\u003e\n\u003cli\u003ethe same outdoor unit;\u003c\/li\u003e\n\u003cli\u003ea shared total capacity;\u003c\/li\u003e\n\u003cli\u003ethe same main operating mode for the refrigeration circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOccupants can therefore set different temperatures from one room to another, but they should not think of four completely independent heat pumps.\u003c\/p\u003e\n\u003cp\u003eIf all four zones require substantial heating at the same time, the condenser must distribute its available capacity among them.\u003c\/p\u003e\n\u003cp\u003eThat is why we size \u003cstrong\u003eeach room and the entire building\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA four-zone 12,000 BTU configuration is possible, but the exact pairing must be confirmed\u003c\/h3\u003e\n\u003cp\u003eSenville commercially offers the 48,000 BTU Quad-Zone version with configurations including \u003cstrong\u003efour 12,000 BTU units\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThat does not necessarily mean that a 12,000 BTU head is needed in every room.\u003c\/p\u003e\n\u003cp\u003eIn a real property, we may have very different needs:\u003c\/p\u003e\n\u003cp\u003eA compact bedroom may require much less capacity than a large living room with extensive glazing, while a sunny attic office may have a higher load than its area would suggest.\u003c\/p\u003e\n\u003cp\u003eThe possible combinations must therefore be validated according to the indoor units compatible with Senville and, above all, according to the \u003cstrong\u003eAHRI pairing\u003c\/strong\u003e that we want to retain.\u003c\/p\u003e\n\u003ch3\u003e23 SEER2 on a system of this capacity: notable efficiency\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e is particularly appealing on a multizone platform capable of serving four rooms.\u003c\/p\u003e\n\u003cp\u003eThe ENERGY STAR database associated with \u003cstrong\u003eSENA-48HF-MOA \/ AHRI 215735320\u003c\/strong\u003e also confirms:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e23 SEER2;\u003c\/li\u003e\n\u003cli\u003e12 EER2;\u003c\/li\u003e\n\u003cli\u003e11 HSPF2;\u003c\/li\u003e\n\u003cli\u003econtinuously variable compressor;\u003c\/li\u003e\n\u003cli\u003eR454B;\u003c\/li\u003e\n\u003cli\u003ecold-climate certification. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis efficiency does not mean that every home will achieve the same annual savings.\u003c\/p\u003e\n\u003cp\u003eActual consumption depends on the quality of the building, the use of the four zones, the setpoint temperature, and the proportion of electric heating that the heat pump actually manages to replace.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore consider SEER2 a \u003cstrong\u003ecomparative indicator\u003c\/strong\u003e, not a promise about an electricity bill.\u003c\/p\u003e\n\u003ch3\u003e45,000 BTU at -8 °C: a much more useful figure than simply “heats down to -30”\u003c\/h3\u003e\n\u003cp\u003eFor a heat pump used in Quebec, we place great importance on the capacity available at low temperatures.\u003c\/p\u003e\n\u003cp\u003eThe listed pairing indicates approximately \u003cstrong\u003e45,000 BTU\/h of heating at -8 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe certification database also reports approximately \u003cstrong\u003e47,000 BTU\/h at -15 °C\u003c\/strong\u003e for this configuration, with a certified COP close to 2 at this operating point. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis capacity matters because -8 °C to -15 °C corresponds to a temperature range in which a heat pump in Quebec can accumulate a great many operating hours over the course of a winter.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner in \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e, the potential for savings is therefore not limited to the two or three coldest nights of January. It depends mainly on what the unit can produce throughout the season.\u003c\/p\u003e\n\u003ch3\u003eHeating down to -30 °C: what it really means\u003c\/h3\u003e\n\u003cp\u003eSenville advertises heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, a figure also listed in the SENA-48HF-MOA brochure. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt this temperature, however, it is necessary to distinguish between \u003cstrong\u003eoperating capacity\u003c\/strong\u003e and \u003cstrong\u003enominal capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAirGreen data associated with the model indicate a maximum capacity of approximately \u003cstrong\u003e24,600 BTU\/h at -30 °C\u003c\/strong\u003e, with a COP of approximately \u003cstrong\u003e1.27\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn other words, the heat pump continues to provide heat when the mercury reaches -30 °C, but it no longer provides the approximately 47,000 to 49,000 BTU available under less severe conditions.\u003c\/p\u003e\n\u003cp\u003eIn a large house requiring 45,000 BTU\/h of heating at -30 °C, a supplemental heat source will therefore remain necessary.\u003c\/p\u003e\n\u003cp\u003eIn a very well-insulated property with much lower heat losses, the heat pump's contribution can remain very significant.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.6 at -8 °C: why this figure deserves to be understood\u003c\/h3\u003e\n\u003cp\u003eA COP of \u003cstrong\u003e2,6\u003c\/strong\u003e means that under this operating condition, the system provides approximately 2.6 units of heat for one unit of electricity consumed by the heat pump.\u003c\/p\u003e\n\u003cp\u003eBy comparison, electric resistance heating operates essentially at a COP of 1.\u003c\/p\u003e\n\u003cp\u003eThe lower the outdoor temperature drops, the more a heat pump's COP generally tends to decrease.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, a value of approximately 1.27 means that the energy advantage over electric resistance becomes smaller, but theoretically remains present under the corresponding conditions.\u003c\/p\u003e\n\u003cp\u003eFor us, these figures are primarily used to determine \u003cstrong\u003ewhen to run the heat pump and when to plan for supplemental heat\u003c\/strong\u003e, rather than to assess the unit based on a single figure.\u003c\/p\u003e\n\u003ch3\u003eR454B and the new installation requirements\u003c\/h3\u003e\n\u003cp\u003eThis generation uses the \u003cstrong\u003eR454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe condenser brochure indicates a charge of approximately \u003cstrong\u003e151.68 oz\u003c\/strong\u003e and a precharge that may correspond to approximately \u003cstrong\u003e150 ft of piping\u003c\/strong\u003e for the published configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a Quad-Zone system, this precharge capacity makes perfect sense: we can have four refrigerant lines running to four different parts of the building.\u003c\/p\u003e\n\u003cp\u003eHowever, “precharged for 150 ft” does not mean that four lines can be routed freely without taking the manufacturer's rules into account.\u003c\/p\u003e\n\u003cp\u003eWe must comply with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe maximum length of each branch;\u003c\/li\u003e\n\u003cli\u003ethe combined length;\u003c\/li\u003e\n\u003cli\u003ethe height differences;\u003c\/li\u003e\n\u003cli\u003ethe piping dimensions;\u003c\/li\u003e\n\u003cli\u003ethe additional charge required when the precharge limits are exceeded;\u003c\/li\u003e\n\u003cli\u003ethe permitted combinations of indoor units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe R454B is also an A2L-class refrigerant. Senville documentation highlights \u003cstrong\u003ediagnostic and leak detection\u003c\/strong\u003e features on this generation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis makes the quality of the connections, leak testing, and commissioning even more important.\u003c\/p\u003e\n\u003ch3\u003eA platform capable of supporting 2 to 6 zones: useful, but the correct matching must be maintained\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation explicitly states that the \u003cstrong\u003eSENA-48HF-MOA can support 2 to 6 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is a very flexible platform.\u003c\/p\u003e\n\u003cp\u003eSenville also markets the same condenser in different versions: Dual-Zone, Quad-Zone, and Five-Zone. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean that we can turn a Quad-Zone configuration into a Five-Zone or Six-Zone system without verifying the consequences.\u003c\/p\u003e\n\u003cp\u003eAdding an indoor unit can change:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003econnected capacity;\u003c\/li\u003e\n\u003cli\u003ecertified efficiency;\u003c\/li\u003e\n\u003cli\u003eAHRI;\u003c\/li\u003e\n\u003cli\u003ethe size of each indoor unit;\u003c\/li\u003e\n\u003cli\u003eeligibility for financial assistance;\u003c\/li\u003e\n\u003cli\u003ethe system's behavior when multiple zones demand capacity simultaneously.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the customer, the outdoor unit number is therefore only part of the information. \u003cstrong\u003eThe complete matching is the real HVAC product.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eA Quad-Zone installation requires four times as much interior planning, not simply four times as many pipes\u003c\/h2\u003e\n\u003ch3\u003eAn AirGreen project in Verdun that perfectly illustrates the challenge\u003c\/h3\u003e\n\u003cp\u003eWe recently completed a \u003cstrong\u003eQuad-Zone installation in Verdun, Montreal\u003c\/strong\u003e at AirGreen, with four wall-mounted units connected to a single condenser.\u003c\/p\u003e\n\u003cp\u003eThe work took place in a unit undergoing renovations, where we had to work around tight spaces, windows close to the installation areas, and the need to keep the line route clean and discreet. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is precisely the type of building where a four-zone solution is worthwhile.\u003c\/p\u003e\n\u003cp\u003eA single large unit in a hallway could have provided plenty of BTUs without actually treating four enclosed rooms properly.\u003c\/p\u003e\n\u003cp\u003eWith four indoor units, each space receives its heating and cooling directly.\u003c\/p\u003e\n\u003ch3\u003eIn Ville-Marie and Old Montreal, the number of zones is not the only challenge\u003c\/h3\u003e\n\u003cp\u003eOur Quad-Zone installations in \u003cstrong\u003eVille-Marie\u003c\/strong\u003e and the \u003cstrong\u003eOld Port of Montreal\u003c\/strong\u003e have also exposed us to the typical realities of urban buildings: uneven walls, limited space, architectural constraints, and the need to conceal the lines without compromising access to the equipment. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a newer home on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, we can sometimes run each line almost directly outside.\u003c\/p\u003e\n\u003cp\u003eIn a Montreal condo, the first indoor unit may be only a few feet from the condenser, while the fourth requires a completely different route.\u003c\/p\u003e\n\u003cp\u003eThat is why two projects using exactly the same Senville heat pump may require very different amounts of work.\u003c\/p\u003e\n\u003ch3\u003eThe four drains deserve as much attention as the four refrigerant lines\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eThis potentially means \u003cstrong\u003efour drains to manage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWe prefer to use gravity when the building configuration allows it. When this is not possible, a condensate pump may become necessary.\u003c\/p\u003e\n\u003cp\u003eAn incorrect slope on a single drain can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewater noises;\u003c\/li\u003e\n\u003cli\u003ea leak;\u003c\/li\u003e\n\u003cli\u003ewater accumulating in the drain pan;\u003c\/li\u003e\n\u003cli\u003ewater infiltration into the wall;\u003c\/li\u003e\n\u003cli\u003ean avoidable service call.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a four-zone project, repeating the components also multiplies the possibilities for error.\u003c\/p\u003e\n\u003ch3\u003eThe piping must match the installed head\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e in the general data associated with the configuration, but with a multi-zone heat pump it is essential to verify the required sizes \u003cstrong\u003efor each indoor unit actually selected\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA 9,000- or 12,000-BTU head does not necessarily have the same connections as a 24,000-BTU unit.\u003c\/p\u003e\n\u003cp\u003eTherefore, we never select the piping solely based on the condenser’s total capacity.\u003c\/p\u003e\n\u003cp\u003eThe final pairing manual remains the reference.\u003c\/p\u003e\n\u003ch3\u003eA condenser weighing nearly 250 lb: the support must be taken seriously\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies the following for the SENA-48HF-MOA:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e37.48 × 16.34 × 52.48 in\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eweight of approximately \u003cstrong\u003e246.47 lb\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level of approximately \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is not a small outdoor wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eIn Greater Montreal, we must anticipate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow;\u003c\/li\u003e\n\u003cli\u003eice;\u003c\/li\u003e\n\u003cli\u003edefrosting;\u003c\/li\u003e\n\u003cli\u003eweight;\u003c\/li\u003e\n\u003cli\u003evibrations;\u003c\/li\u003e\n\u003cli\u003esupport stability;\u003c\/li\u003e\n\u003cli\u003efuture access to the service panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the condenser is placed directly beneath a roof downspout, ice-related problems can become significant.\u003c\/p\u003e\n\u003cp\u003eIf it is installed too low, snow may reduce airflow.\u003c\/p\u003e\n\u003cp\u003eIf it is mounted on a lightweight structure, vibrations may be transmitted to the building.\u003c\/p\u003e\n\u003ch3\u003e65 dB(A): the outdoor location must also respect the neighbors\u003c\/h3\u003e\n\u003cp\u003eAn outdoor sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e warrants serious consideration, particularly in densely populated areas of Montreal.\u003c\/p\u003e\n\u003cp\u003eInstalling the unit directly beneath the homeowner’s bedroom window or near the neighbor’s is not our first choice when a realistic alternative exists.\u003c\/p\u003e\n\u003cp\u003eWe also consider how sound can be reflected between two closely spaced walls.\u003c\/p\u003e\n\u003cp\u003eOn the \u003cstrong\u003eNorth Shore or South Shore\u003c\/strong\u003e, a larger property sometimes provides more flexibility. In a Montreal plex, every available foot can matter.\u003c\/p\u003e\n\u003ch3\u003e37 A MCA, 40 A maximum protection\u003c\/h3\u003e\n\u003cp\u003eThe brochure confirms a \u003cstrong\u003eminimum circuit ampacity of 37 A\u003c\/strong\u003e and a maximum protection of \u003cstrong\u003e40 A\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe system operates at \u003cstrong\u003e208\/230 V single-phase\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBefore installation, we therefore check the panel’s capacity, the available space, and the electrical routing.\u003c\/p\u003e\n\u003cp\u003eThis check must be carried out before the installation date, particularly in older plexes in \u003cstrong\u003eMontreal and Longueuil\u003c\/strong\u003e, where an electrical panel may already be heavily loaded.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi and four-zone management\u003c\/h3\u003e\n\u003cp\u003eThe system offers Wi-Fi control, and Senville markets its Quad-Zone range as a solution that allows individual control of different rooms. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor four zones, this becomes genuinely practical.\u003c\/p\u003e\n\u003cp\u003eThe owner can, for example, maintain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe living room at a more comfortable temperature during the evening;\u003c\/li\u003e\n\u003cli\u003ethe office slightly cooler when it is unoccupied;\u003c\/li\u003e\n\u003cli\u003ethe bedrooms at a different temperature during the night;\u003c\/li\u003e\n\u003cli\u003ea guest room with a lower setpoint when it is not in use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA multi-zone installation is therefore not simply a way to distribute BTUs. It also makes it possible to adapt comfort to the building’s actual use.\u003c\/p\u003e\n\u003ch3\u003eLogisVert: why the displayed amount is $5,400\u003c\/h3\u003e\n\u003cp\u003eThe capacity used in the AirGreen specifications is \u003cstrong\u003e45,000 BTU\/h at -8°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec’s LogisVert program currently offers \u003cstrong\u003e$120 per 1,000 BTU\/h at -8°C\u003c\/strong\u003e for an eligible heat pump, subject to the applicable conditions being met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculation is therefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e45 × $120 = $5,400\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is exactly the amount of \u003cstrong\u003e5 400 $\u003c\/strong\u003e displayed for this heat pump.\u003c\/p\u003e\n\u003cp\u003eThe AHRI number \u003cstrong\u003e215735320\u003c\/strong\u003e is associated with an ENERGY STAR cold-climate heat pump, with a certified capacity of 45,000 BTU\/h at around -8°C. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, you must always check the program \u003cstrong\u003eon the installation date\u003c\/strong\u003e. Hydro-Québec specifies that eligible models and amounts may change. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA multi-unit residential building incentive can be even more substantial\u003c\/h3\u003e\n\u003cp\u003eFor certain \u003cstrong\u003eeligible multi-unit residential buildings\u003c\/strong\u003e, Hydro-Québec has offered, since June 15, 2026, an incentive increase bringing the rebate to \u003cstrong\u003e$220 per 1,000 BTU\/h at -8°C\u003c\/strong\u003e when all program requirements are met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith 45,000 BTU\/h at -8°C, the theoretical calculation is:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e45 × 220 $ = 9,900 $\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis amount is by no means automatic. The incentive is intended for multi-unit residential buildings meeting specific criteria and applies to ENERGY STAR – Cold Climate wall-mounted heat pumps installed in eligible dwelling units.\u003c\/p\u003e\n\u003cp\u003eFor this type of project, we verify the address, building type, and exact configuration before presenting an amount as applicable.\u003c\/p\u003e\n\u003ch3\u003eWarranty: there is a difference between the manufacturer’s brochure and the coverage displayed by AirGreen\u003c\/h3\u003e\n\u003cp\u003eThe attached brochure mentions a manufacturer’s warranty of \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specification sheet associated with the configuration, for its part, presents \u003cstrong\u003e10-10-0\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eWe therefore have the \u003cstrong\u003efinal quote\u003c\/strong\u003e specify the coverage that actually applies to the project: the manufacturer program, registration requirements, and any additional protection offered.\u003c\/p\u003e\n\u003cp\u003eThe document provided to the customer is what should be relied upon, not an old brochure or a website specification consulted for another SENA-48HF-MOA combination.\u003c\/p\u003e\n\u003ch3\u003eThe mistakes we seek to avoid on a four-zone system\u003c\/h3\u003e\n\u003ch4\u003eInstalling four heads with the same capacity without calculating the requirements of all four rooms\u003c\/h4\u003e\n\u003cp\u003eA 150-square-foot bedroom and a 700-square-foot living room should not automatically receive the same capacity simply to simplify ordering.\u003c\/p\u003e\n\u003ch4\u003eInstalling a head in a hallway to serve two bedrooms\u003c\/h4\u003e\n\u003cp\u003eA heat pump heats and cools a space much more effectively when it blows directly into that space.\u003c\/p\u003e\n\u003ch4\u003eChoosing locations solely to reduce pipe length\u003c\/h4\u003e\n\u003cp\u003eA shorter refrigerant line is of little value if the unit blows air in the wrong direction all year round.\u003c\/p\u003e\n\u003ch4\u003eFailing to plan for future maintenance\u003c\/h4\u003e\n\u003cp\u003eWith four indoor units, we want to maintain access to the filters, drain, evaporator, and components.\u003c\/p\u003e\n\u003ch4\u003eForgetting that the four zones share a common capacity\u003c\/h4\u003e\n\u003cp\u003eIf all four rooms have a very high simultaneous load, condenser sizing becomes critical.\u003c\/p\u003e\n\u003ch4\u003eConfusing the Dual-Zone and Quad-Zone specifications\u003c\/h4\u003e\n\u003cp\u003eThe attached brochure shows a \u003cstrong\u003eDual-Zone 24,000 + 24,000 BTU\u003c\/strong\u003e version, but the SENA-48HF-MOA is also officially used in a Quad-Zone configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe exact AHRI number tells us which performance specifications we need to use.\u003c\/p\u003e\n\u003ch3\u003eFor what type of property is this SENVILLE Quad-Zone most relevant?\u003c\/h3\u003e\n\u003cp\u003eWe mainly consider it for buildings that have \u003cstrong\u003efour zones genuinely requiring their own air distribution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efour bedrooms;\u003c\/li\u003e\n\u003cli\u003ethree bedrooms and a living room;\u003c\/li\u003e\n\u003cli\u003etwo bedrooms, an office, and a living area;\u003c\/li\u003e\n\u003cli\u003etwo levels with several enclosed rooms;\u003c\/li\u003e\n\u003cli\u003ea large condo;\u003c\/li\u003e\n\u003cli\u003ea multiplex;\u003c\/li\u003e\n\u003cli\u003ea small business with several offices;\u003c\/li\u003e\n\u003cli\u003ea property where the number of outdoor units must be limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a very large, entirely open area, four heads would often be unnecessary.\u003c\/p\u003e\n\u003cp\u003eIn a residence with six or seven small enclosed rooms, we might instead consider another configuration.\u003c\/p\u003e\n\u003cp\u003eThe number of zones should follow the building’s layout, not just the desired total capacity.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a SENVILLE 4-Zone installation?\u003c\/h3\u003e\n\u003cp\u003eA four-zone installation requires much more coordination than a single-split system.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we must plan simultaneously:\u003c\/p\u003e\n\u003cp\u003ethe four indoor locations, the four drains, the refrigerant line routes, the outdoor line sets, the wiring, the outdoor unit, the electrical circuit, and the complete commissioning.\u003c\/p\u003e\n\u003cp\u003eOur experience with Quad-Zone installations in \u003cstrong\u003eVerdun, Ville-Marie, Rosemont–La Petite-Patrie, Montreal East, Plateau-Mont-Royal, and Pointe-Claire\u003c\/strong\u003e has allowed us to work in very different environments, from narrow urban apartments to homes where the four zones are located on multiple façades. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is precisely the type of project where preparation makes the difference.\u003c\/p\u003e\n\u003cp\u003eA Quad-Zone heat pump must do more than simply work on the day it is commissioned. It must remain easy to clean, accessible for repairs, visually unobtrusive, and capable of distributing the right amount of air to each of the four zones for many years.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for the SENVILLE 4-Zone 48,000 BTU\u003c\/h3\u003e\n\u003cp\u003eFor a \u003cstrong\u003eSENVILLE R454B 4-Zone Heat Pump | 48000 BTU\u003c\/strong\u003e in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, or the North Shore\u003c\/strong\u003e, contact AirGreen.\u003c\/p\u003e\n\u003cp\u003eWe can determine the required capacity in each of the four rooms, confirm compatible indoor units, validate AHRI match \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e, plan the refrigerant lines and drains, check the electrical panel, and confirm eligibility for the \u003cstrong\u003e$5,400 LogisVert grant\u003c\/strong\u003e according to the conditions in effect at the time of installation.\u003c\/p\u003e\n\u003cp\u003eOn a Quad-Zone system, the best result doesn’t come from using the highest possible BTU capacity. It comes from properly distributing the capacity among four spaces, each with its own needs.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"12 + 12 + 12 + 12","offer_id":56201207677220,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_48000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057863"},{"product_id":"thermopompe-5-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 5-Zone Heat Pump | 36000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eA single outdoor unit for five distinct areas: a multi-zone solution that requires proper sizing work\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e36,000-BTU five-zone heat pump\u003c\/strong\u003e should not be approached as five small independent heat pumps grouped around the same compressor. With the \u003cstrong\u003eSENVILLE SENA-36HF-MOA\u003c\/strong\u003e, the five indoor units share the outdoor unit’s available capacity, while each zone retains its own temperature control and airflow.\u003c\/p\u003e\n\u003cp\u003eThis architecture is particularly interesting in homes in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/strong\u003e where needs are distributed among several enclosed rooms: bedrooms, an office, a basement, an open-concept area, an upper floor, or an addition. In this type of building, increasing the capacity of a single wall-mounted unit does not necessarily solve the problem. Instead, heating and cooling should be brought directly to the areas that need them.\u003c\/p\u003e\n\u003cp\u003eThe technical documentation for the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e confirms that this multi-zone platform can serve \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e. It operates on a 208\/230 V single-phase power supply, offers a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e, an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e, a nominal capacity of 36,000 BTU, and a much wider modulation range than this nominal value. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the configuration published by AirGreen, the main specifications are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-36HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCooling capacity: 36,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735317\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR cold climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR number: 3630064\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 13.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.7\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to: -30°C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -8°C: 38,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -15°C: 36,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum capacity at -30°C: 22,400 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP at -8°C: 2.12\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum COP at -30°C: 1.47\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 3,038 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eProvincial subsidy displayed by AirGreen: $4,560\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat “five zones” really means\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit does not have five compressors. It has a single capacity source that is distributed among the indoor units according to demand.\u003c\/p\u003e\n\u003cp\u003eThis is an essential point.\u003c\/p\u003e\n\u003cp\u003eIf five indoor units are installed in five rooms, they do not automatically receive \u003cstrong\u003e7,200 BTU each\u003c\/strong\u003e simply because 36,000 divided by five equals 7,200.\u003c\/p\u003e\n\u003cp\u003eThe system’s logic is dynamic.\u003c\/p\u003e\n\u003cp\u003eA room that has already reached its setpoint may require very little energy, while an open-concept ground-floor area may require much more capacity. The inverter compressor then adjusts its operating speed within the limits set by the installed combination.\u003c\/p\u003e\n\u003cp\u003eSenville's technical data sheet indicates a \u003cstrong\u003ecooling range of 9,000 to 43,000 BTU\/h\u003c\/strong\u003e and a \u003cstrong\u003eheating range of 10,000 to 44,000 BTU\/h\u003c\/strong\u003e. It also indicates electrical modulation ranging approximately from 600 to 4,000 W in cooling mode and from 600 to 3,750 W in heating mode. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is what allows a multi-zone system to respond to several varying demands without continuously running the compressor at maximum capacity.\u003c\/p\u003e\n\u003ch3\u003eThe attached brochure shows a two-zone configuration, but the outdoor unit supports up to five zones\u003c\/h3\u003e\n\u003cp\u003eThe first page of the provided document presents a commercial combination consisting of \u003cstrong\u003etwo 18,000 BTU indoor units\u003c\/strong\u003e, under reference SENA-36HF-D1818. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis should not be taken to mean that the SENA-36HF-MOA is limited to two indoor units.\u003c\/p\u003e\n\u003cp\u003eThe technical table in the same document clearly states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Zones: 2–5.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the outdoor platform of interest here for the \u003cstrong\u003e5-zone AirGreen\u003c\/strong\u003e configuration.\u003c\/p\u003e\n\u003cp\u003eHowever, the brochure does not provide, in the attached pages, the complete list of permitted combinations of five indoor units. We therefore cannot automatically deduce their individual capacities from this document. In an actual project, we verify the exact combination before selecting the five indoor units.\u003c\/p\u003e\n\u003ch3\u003eWhy five small indoor units can provide better comfort than one large unit\u003c\/h3\u003e\n\u003cp\u003eLet us consider a typical two-story house with a basement.\u003c\/p\u003e\n\u003cp\u003eIt includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large living room and kitchen;\u003c\/li\u003e\n\u003cli\u003ea primary bedroom;\u003c\/li\u003e\n\u003cli\u003etwo other bedrooms;\u003c\/li\u003e\n\u003cli\u003ea basement office.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEven if a single 24,000 or 36,000 BTU heat pump has sufficient theoretical capacity for the total area, it cannot efficiently deliver air through multiple doors, corridors, stairwells, and walls.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e5-zone heat pump\u003c\/strong\u003e addresses the problem differently.\u003c\/p\u003e\n\u003cp\u003eEach area receives its own indoor unit.\u003c\/p\u003e\n\u003cp\u003eIn this scenario, a design could assign one indoor unit to the open area, then use units suited to the bedrooms and basement. We do not automatically assign the same capacity to every room: each zone is sized according to its own thermal losses and gains.\u003c\/p\u003e\n\u003ch3\u003eA bedroom should not be oversized simply because the outdoor unit is large\u003c\/h3\u003e\n\u003cp\u003eThis is a mistake we particularly strive to avoid.\u003c\/p\u003e\n\u003cp\u003eIf a small bedroom has a low heating and cooling load, installing an unnecessarily large indoor unit can produce shorter cycles and less stable comfort.\u003c\/p\u003e\n\u003cp\u003eThe fact that the outdoor unit is capable of \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e does not justify installing large indoor units everywhere.\u003c\/p\u003e\n\u003cp\u003eWe look at, in particular:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003earea of each zone;\u003c\/li\u003e\n\u003cli\u003enumber of exterior walls;\u003c\/li\u003e\n\u003cli\u003enumber of windows;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003einsulation level;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003ethe presence of heat-generating equipment;\u003c\/li\u003e\n\u003cli\u003ethe frequency with which the room is used.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is particularly important when we work on homes in \u003cstrong\u003eMontreal\u003c\/strong\u003e with several small bedrooms or plexes where each room has a different layout.\u003c\/p\u003e\n\u003ch3\u003eFive independent thermostats, but one shared operating mode\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit can have its own setpoint.\u003c\/p\u003e\n\u003cp\u003eA homeowner could therefore maintain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e21 °C in the living room;\u003c\/li\u003e\n\u003cli\u003e19 °C in a bedroom;\u003c\/li\u003e\n\u003cli\u003e20 °C in another;\u003c\/li\u003e\n\u003cli\u003e18 °C in a rarely used office;\u003c\/li\u003e\n\u003cli\u003e20.5 °C in the basement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHowever, there is an important limitation to understand before purchasing a multi-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eIndoor units connected to the same outdoor unit should normally operate in compatible modes. One room cannot continuously call for cooling while another requires heating at the same time on a conventional reversible system.\u003c\/p\u003e\n\u003cp\u003eIn most Quebec residences, this limit poses few problems in the middle of winter or at the height of summer, but it can become relevant during the shoulder seasons if certain rooms have significantly different solar loads.\u003c\/p\u003e\n\u003ch3\u003e36,000 nominal BTU\/h, but up to 44,000 BTU\/h under certain conditions\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates a nominal heating capacity of \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e, but a range that can reach \u003cstrong\u003e44,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis margin is useful during periods of high simultaneous demand.\u003c\/p\u003e\n\u003cp\u003eConversely, the system can significantly reduce its output when only one or two zones actually require heat.\u003c\/p\u003e\n\u003cp\u003eThis is particularly useful in the spring and fall in \u003cstrong\u003eGreater Montreal\u003c\/strong\u003e, when heating needs change rapidly between day and night.\u003c\/p\u003e\n\u003ch3\u003eHeating down to -30 °C: a very interesting feature, but one that must be interpreted correctly\u003c\/h3\u003e\n\u003cp\u003eSenville indicates a minimum outdoor heating temperature of \u003cstrong\u003e-22 °F \/ -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet also specifies the following capacities:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eOutdoor temperature\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003ePublished capacity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e38,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-15 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-30 °C maximum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e22,400 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThese figures show why the statement “heats down to -30 °C” is never enough to size a heat pump.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-15 °C\u003c\/strong\u003e, the listed capacity remains equivalent to the nominal 36,000 BTU.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-30 °C\u003c\/strong\u003e, it drops to approximately \u003cstrong\u003e22,400 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf the house loses 32,000 BTU\/h when the outdoor temperature reaches -30 °C, the heat pump can continue to make a significant contribution to heating, but supplemental heating will be needed to make up the difference.\u003c\/p\u003e\n\u003ch3\u003eCOP 2.12 at -8 °C and COP 1.47 at -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe COP helps provide a better understanding of what happens with energy consumption.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003eCOP of 2.12\u003c\/strong\u003e indicates that under the corresponding conditions, the system provides approximately 2.12 units of heat for every unit of electricity consumed.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-30°C\u003c\/strong\u003e, the published maximum COP drops to \u003cstrong\u003e1.47\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe heat pump therefore still has an advantage over electric resistance heating under these conditions, but that advantage is significantly smaller than when the outdoor temperature is less extreme.\u003c\/p\u003e\n\u003cp\u003eThis detail is important for homeowners in \u003cstrong\u003eLaval, Longueuil, Terrebonne, Boucherville, Blainville, or Montreal\u003c\/strong\u003e who want to estimate heating savings. Annual savings must be assessed over an entire season, not only on the coldest days.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR cold climate and listed rebate of $4,560\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet identifies this combination as \u003cstrong\u003eENERGY STAR cold climate\u003c\/strong\u003e with the number \u003cstrong\u003e3630064\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt also indicates a provincial rebate of \u003cstrong\u003e4 560 $\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSince the capacity at -8°C published on the data sheet is \u003cstrong\u003e38,000 BTU\/h\u003c\/strong\u003e, this value becomes particularly important when calculating certain financial incentives based on low-temperature performance.\u003c\/p\u003e\n\u003cp\u003eFor a five-zone system, however, the certified combination actually installed must be verified. The same outdoor unit may accept several indoor-unit assemblies, and we never assume that all combinations automatically produce the same certification.\u003c\/p\u003e\n\u003ch3\u003eThe role of AHRI number 215735317\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet associates this configuration with \u003cstrong\u003eAHRI number 215735317\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is more precise than the general description “Senville 36,000 BTU.”\u003c\/p\u003e\n\u003cp\u003eFor a project involving five indoor units, we always want to match:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe outdoor unit;\u003c\/li\u003e\n\u003cli\u003ethe five indoor units;\u003c\/li\u003e\n\u003cli\u003ethe AHRI combination;\u003c\/li\u003e\n\u003cli\u003elow-temperature performance;\u003c\/li\u003e\n\u003cli\u003eeligibility for the rebate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a particularly important precaution with a multi-zone system, because a single outdoor unit may serve several different configurations.\u003c\/p\u003e\n\u003ch2\u003eInstalling five zones correctly: where HVAC expertise becomes decisive\u003c\/h2\u003e\n\u003ch3\u003eThe first challenge is deciding where the five zones begin and end.\u003c\/h3\u003e\n\u003cp\u003eFive rooms do not necessarily correspond to five ideal zones.\u003c\/p\u003e\n\u003cp\u003eIn an open-concept home, the kitchen, dining room, and living room may behave as one large thermal zone.\u003c\/p\u003e\n\u003cp\u003eConversely, two bedrooms of the same size can have very different loads if one faces due south and the other due north.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore aim to distribute the units according to the property's actual thermal behavior.\u003c\/p\u003e\n\u003cp\u003eA representative configuration could be:\u003c\/p\u003e\n\u003ch4\u003eZone 1: main living area\u003c\/h4\u003e\n\u003cp\u003eHigher-capacity unit for the living room, kitchen, and dining room.\u003c\/p\u003e\n\u003ch4\u003eZone 2: primary bedroom\u003c\/h4\u003e\n\u003cp\u003eIndependent control to maintain a different temperature at night.\u003c\/p\u003e\n\u003ch4\u003eZone 3: second bedroom\u003c\/h4\u003e\n\u003cp\u003eUnit sized for a lower load.\u003c\/p\u003e\n\u003ch4\u003eZone 4: office or third bedroom\u003c\/h4\u003e\n\u003cp\u003eIndependent control, particularly useful when this room is not used every day.\u003c\/p\u003e\n\u003ch4\u003eZone 5: basement\u003c\/h4\u003e\n\u003cp\u003eA zone that is often cooler in summer and has heating requirements that differ significantly from those of the upper floor.\u003c\/p\u003e\n\u003cp\u003eThis distribution is not a universal prescription. It mainly illustrates why a \u003cstrong\u003e5-zone installation\u003c\/strong\u003e requires more design work than a simple wall-mounted heat pump.\u003c\/p\u003e\n\u003ch3\u003e125 feet of precharge: an important figure when connecting five indoor units\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe technical specifications indicate a charge of \u003cstrong\u003e134.04 oz of R-454B\u003c\/strong\u003e and a stated precharge for \u003cstrong\u003e125 ft\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis length becomes particularly relevant in a five-zone installation.\u003c\/p\u003e\n\u003cp\u003eSuppose the routes are approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 ft;\u003c\/li\u003e\n\u003cli\u003e20 ft;\u003c\/li\u003e\n\u003cli\u003e25 ft;\u003c\/li\u003e\n\u003cli\u003e30 ft;\u003c\/li\u003e\n\u003cli\u003e35 ft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe total already reaches \u003cstrong\u003e125 ft\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWith five units, we must therefore plan the routes before choosing the outdoor unit's final location.\u003c\/p\u003e\n\u003cp\u003eA compressor positioned solely because it is not visible from the street may sometimes require adding dozens of feet of unnecessary piping.\u003c\/p\u003e\n\u003ch3\u003eThe 1\/4 – 1\/2 in piping specification should not be applied blindly to all five zones\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eIn a multi-zone installation, pipe sizes may depend on the capacity and exact model of each indoor unit.\u003c\/p\u003e\n\u003cp\u003eWe therefore do not assume that all five indoor units necessarily use the same diameters.\u003c\/p\u003e\n\u003cp\u003eEach connection must be checked before preparing the job site.\u003c\/p\u003e\n\u003ch3\u003eThe drains become five separate projects\u003c\/h3\u003e\n\u003cp\u003eThis is an aspect that is often underestimated.\u003c\/p\u003e\n\u003cp\u003eA five-zone heat pump means up to five units that can produce condensate in cooling mode.\u003c\/p\u003e\n\u003cp\u003eEach indoor unit must have:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea properly sized drain;\u003c\/li\u003e\n\u003cli\u003ean adequate slope when drainage relies on gravity;\u003c\/li\u003e\n\u003cli\u003ean accessible route;\u003c\/li\u003e\n\u003cli\u003ebackflow protection;\u003c\/li\u003e\n\u003cli\u003ea suitable strategy when gravity drainage is not possible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn some installations in \u003cstrong\u003eMontreal and Longueuil\u003c\/strong\u003e, drainage issues are more significant than refrigerant piping issues, particularly when several units must be installed on interior walls.\u003c\/p\u003e\n\u003cp\u003eA condensate pump may sometimes be necessary, but we generally favor gravity drainage when the configuration allows it.\u003c\/p\u003e\n\u003ch3\u003eThe outdoor unit is substantial: 211.86 lb\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e38.58 in × 16.34 in × 38.39 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand its stated net weight is \u003cstrong\u003e211.86 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe are well beyond the weight of a small single-zone unit.\u003c\/p\u003e\n\u003cp\u003eThe support must be selected accordingly.\u003c\/p\u003e\n\u003cp\u003eIn Quebec, you must also take into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow accumulation;\u003c\/li\u003e\n\u003cli\u003eice created by defrosting;\u003c\/li\u003e\n\u003cli\u003evibrations;\u003c\/li\u003e\n\u003cli\u003ewall or ground stability;\u003c\/li\u003e\n\u003cli\u003eaccess for servicing;\u003c\/li\u003e\n\u003cli\u003ethe required clearances around the outdoor unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy we avoid installing it too close to the ground\u003c\/h3\u003e\n\u003cp\u003eA heat pump capable of operating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e must physically be able to breathe when it snows.\u003c\/p\u003e\n\u003cp\u003eIf the outdoor unit is blocked by 30 or 40 cm of snow, the low-temperature certification does nothing to solve the problem.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan for an elevation suited to the site.\u003c\/p\u003e\n\u003cp\u003eDuring defrosting, the outdoor unit also produces water. This water can freeze beneath the unit and gradually form a significant buildup of ice.\u003c\/p\u003e\n\u003cp\u003eThe space beneath the unit must be planned with this reality in mind.\u003c\/p\u003e\n\u003ch3\u003e3,037 CFM: the outdoor unit moves a lot of air\u003c\/h3\u003e\n\u003cp\u003eThe technical table indicates a maximum outdoor airflow of \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis figure explains why we leave sufficient space around the unit.\u003c\/p\u003e\n\u003cp\u003eAn outdoor unit enclosed between several walls or installed beneath an overly restrictive structure may reabsorb air that has already been discharged.\u003c\/p\u003e\n\u003cp\u003eA 36,000 BTU multizone heat pump needs a location that allows genuine airflow, not merely enough space to physically fit the unit.\u003c\/p\u003e\n\u003ch3\u003e65 dB(A): the choice of exterior wall deserves attention\u003c\/h3\u003e\n\u003cp\u003eThe indicated outdoor sound level is \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a detached property with plenty of land, this often offers several placement options.\u003c\/p\u003e\n\u003cp\u003eIn a duplex in \u003cstrong\u003eMontréal\u003c\/strong\u003e or a home close to its neighbors in \u003cstrong\u003eLaval or Longueuil\u003c\/strong\u003e, we need to pay greater attention to windows, terraces, and surfaces that reflect sound.\u003c\/p\u003e\n\u003cp\u003ePlacing the outdoor unit in a narrow corridor between two buildings can result in a very different perception of sound from that experienced in an open area.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and MOP 40 A\u003c\/h3\u003e\n\u003cp\u003eThe unit operates at \u003cstrong\u003e208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe documentation states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThese values are used to design the unit's electrical circuit.\u003c\/p\u003e\n\u003cp\u003eA circuit breaker should not be selected by making an approximate calculation based on the 36,000 BTU rating. The electrical specifications on the nameplate and in the model documentation are the references to follow.\u003c\/p\u003e\n\u003ch3\u003eWiFi makes perfect sense with five zones\u003c\/h3\u003e\n\u003cp\u003eRemote control may seem secondary on a single-zone heat pump. With five indoor units, it becomes much more practical.\u003c\/p\u003e\n\u003cp\u003eThe documentation highlights \u003cstrong\u003esmart app control and Alexa integration\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA family can adjust different rooms without walking throughout the house with five remote controls.\u003c\/p\u003e\n\u003cp\u003eThis also makes it possible to program a rarely used bedroom differently from the living room or office.\u003c\/p\u003e\n\u003cp\u003eHowever, WiFi should not be considered a substitute for properly selecting capacities. An improperly sized head will remain improperly sized even with an excellent app.\u003c\/p\u003e\n\u003ch3\u003eLeak detection and self-diagnostics\u003c\/h3\u003e\n\u003cp\u003eSenville also indicates monitoring and \u003cstrong\u003eproblem-detection functions, including certain refrigerant-related anomalies\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a five-zone system, this feature can facilitate the initial diagnostic step.\u003c\/p\u003e\n\u003cp\u003eBut when only one zone is no longer heating properly, several causes are possible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclogged filter;\u003c\/li\u003e\n\u003cli\u003edirty heat exchanger;\u003c\/li\u003e\n\u003cli\u003edrain problem;\u003c\/li\u003e\n\u003cli\u003eindoor fan;\u003c\/li\u003e\n\u003cli\u003ecommunication;\u003c\/li\u003e\n\u003cli\u003esensor;\u003c\/li\u003e\n\u003cli\u003erefrigerant charge;\u003c\/li\u003e\n\u003cli\u003econfiguration problem.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe system must therefore be diagnosed as a whole rather than automatically replacing a part on the unit that appears to be causing the problem.\u003c\/p\u003e\n\u003ch3\u003eFive zones also mean five units to maintain\u003c\/h3\u003e\n\u003cp\u003eThe added comfort comes with more maintenance points.\u003c\/p\u003e\n\u003cp\u003eA 5-zone configuration includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efive filters or filter assemblies;\u003c\/li\u003e\n\u003cli\u003efive indoor heat exchangers;\u003c\/li\u003e\n\u003cli\u003efive fans;\u003c\/li\u003e\n\u003cli\u003efive drains;\u003c\/li\u003e\n\u003cli\u003efive louver assemblies;\u003c\/li\u003e\n\u003cli\u003eseveral additional refrigerant connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA bedroom unit may remain relatively clean while a head located in an open kitchen accumulates dust and contaminants much more quickly.\u003c\/p\u003e\n\u003cp\u003eWe therefore recommend \u003cstrong\u003eHVAC maintenance tailored to each zone\u003c\/strong\u003e rather than an approach in which all units are automatically cleaned at the same interval.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a documentation discrepancy to verify\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates a manufacturer’s warranty \u003cstrong\u003e10-10-0\u003c\/strong\u003e with an additional warranty possibly available.\u003c\/p\u003e\n\u003cp\u003eHowever, the attached Senville brochure indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. This information appears clearly in the technical table. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference must be confirmed at the time of sale based on the exact product, the installed combination, and the applicable registration requirements.\u003c\/p\u003e\n\u003cp\u003eWe prefer to flag this type of discrepancy rather than present a longer warranty without verifying the precise conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen is a SENVILLE 5-zone 36,000 BTU particularly relevant?\u003c\/h3\u003e\n\u003cp\u003eWe mainly consider this configuration when the property has \u003cstrong\u003eseveral separate rooms\u003c\/strong\u003e and the owner wants to avoid installing multiple outdoor units.\u003c\/p\u003e\n\u003cp\u003eIt may be particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large house with enclosed bedrooms;\u003c\/li\u003e\n\u003cli\u003ea two-story property with a basement;\u003c\/li\u003e\n\u003cli\u003efive areas requiring different settings;\u003c\/li\u003e\n\u003cli\u003ea multi-unit property where several spaces need to be conditioned;\u003c\/li\u003e\n\u003cli\u003ea house where the exterior aesthetics limit the number of units;\u003c\/li\u003e\n\u003cli\u003ea project seeking a \u003cstrong\u003ecold-climate ENERGY STAR\u003c\/strong\u003e heat pump;\u003c\/li\u003e\n\u003cli\u003ea property where operation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConversely, it would be unnecessarily complex for a large open-concept area where one or two properly sized units are sufficient.\u003c\/p\u003e\n\u003ch3\u003eThe main pitfall: wanting to use all five ports simply because they are available\u003c\/h3\u003e\n\u003cp\u003eThe fact that the outdoor unit supports up to five zones does not mean that five units are always the best solution.\u003c\/p\u003e\n\u003cp\u003eWe do not recommend adding a head unit to a room that does not genuinely need one simply to “use all the ports.”\u003c\/p\u003e\n\u003cp\u003eEach additional unit adds:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003epiping;\u003c\/li\u003e\n\u003cli\u003ea drain;\u003c\/li\u003e\n\u003cli\u003ewiring;\u003c\/li\u003e\n\u003cli\u003emaintenance;\u003c\/li\u003e\n\u003cli\u003econnections;\u003c\/li\u003e\n\u003cli\u003ea potential load on the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA good 5-zone installation is therefore one where \u003cstrong\u003eall five zones are genuinely justified\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhy AirGreen Pays So Much Attention to Design Before Installation\u003c\/h3\u003e\n\u003cp\u003eWith five zones, a poor choice made at the beginning of the project is repeated several times.\u003c\/p\u003e\n\u003cp\u003eA poorly positioned outdoor unit can lengthen five line-set runs. Poor head-unit selection can affect five spaces. A poor drainage plan can create several points of risk.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, we therefore verify the overall configuration before starting the work.\u003c\/p\u003e\n\u003cp\u003eWe analyze, among other things, the loads in the different zones, the unit locations, piping routes, electrical capacity, drainage, the outdoor unit’s position, and the certified combination.\u003c\/p\u003e\n\u003cp\u003eThis preparation is what allows a multi-zone heat pump to operate as a coherent system rather than as five appliances simply connected to the same compressor.\u003c\/p\u003e\n\u003ch2\u003eA particularly comprehensive solution for a home divided into several areas\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-36HF-MOA R454B 36,000 BTU\u003c\/strong\u003e offers a highly relevant technical profile for a five-zone configuration: \u003cstrong\u003eSEER2 23, EER2 13, HSPF2 10.7, heating down to -30°C, modulation up to 44,000 BTU\/h in heating mode, ENERGY STAR Cold Climate, and WiFi\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBut with an installation this complex, the quality of the result depends more on the design than on the number of features listed on the specification sheet.\u003c\/p\u003e\n\u003cp\u003eA good installation must intelligently distribute capacity among the five areas, keep line-set runs reasonable, ensure drainage for each unit, and maintain the required clearances around the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eFor a property in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore, the South Shore, or Montérégie\u003c\/strong\u003e, this configuration can offer a very appealing level of control while limiting the exterior façade to a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen for a quote on your SENVILLE 5-zone, 36,000 BTU heat pump. Before installation, we can verify the required capacity in each of the five zones, the AHRI combination, the locations, the electrical circuit, the refrigerant lines, and the applicable rebate.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120040194340,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_5_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057869"},{"product_id":"thermopompe-5-zones-senville-r454b-48000-btu","title":"SENVILLE R454B 5-Zone Heat Pump | 48000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eFive comfort zones from a single outdoor unit: a demanding configuration where sizing makes all the difference\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e48,000 BTU SENVILLE R454B 5-zone heat pump\u003c\/strong\u003e, built around the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e outdoor unit, is designed for homes, duplexes, multifamily buildings, and small commercial spaces where several areas need to be heated and cooled independently without installing five outdoor units.\u003c\/p\u003e\n\u003cp\u003eThis SENVILLE platform is a particularly appealing solution for certain properties in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore and the South Shore\u003c\/strong\u003e: multistory homes, residences with finished basements, properties with several enclosed bedrooms, or buildings where installing a central duct network would be complex.\u003c\/p\u003e\n\u003cp\u003eThe essential point is to understand what “5 zones” really means. The same outdoor unit supplies up to five indoor units in the configuration presented here. Each zone has its own control, but \u003cstrong\u003ethe five zones share the available capacity of the same outdoor compressor\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe technical documentation for the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e confirms that this multizone platform can accommodate \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e, with a 208\/230 V single-phase power supply and an efficiency rating of 23 SEER2. A configuration with five indoor units is therefore well within the intended capabilities of this outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the AirGreen configuration presented here, the main features are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor model: SENA-48HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConfiguration: 5 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated capacity: 48,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735320\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR reference: 3630067\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 11.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum heating temperature: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 4,503 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor dimensions: 37.48 × 16.34 × 52.48 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpecified piping: 3\/8 in – 5\/8 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eVertical louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHorizontal louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAdditional warranty: available\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProvincial rebate indicated: $5,400\u003c\/strong\u003e, subject to applicable conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy a five-zone heat pump should not be sized simply by dividing 48,000 BTU by five\u003c\/h3\u003e\n\u003cp\u003eA common mistake is to take the \u003cstrong\u003e48,000 BTU\u003c\/strong\u003e capacity of the outdoor unit, divide it by five, and assume that each zone should receive approximately 9,600 BTU.\u003c\/p\u003e\n\u003cp\u003eThis is not how a multizone system should be designed.\u003c\/p\u003e\n\u003cp\u003eEach space has its own heating load. A southwest-facing open kitchen may require much more air conditioning than a bedroom located on the north side. A basement may require little cooling in July but need more heating during certain winter periods.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we therefore assess each zone separately.\u003c\/p\u003e\n\u003cp\u003eWe look at factors including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eits area;\u003c\/li\u003e\n\u003cli\u003ethe number and size of windows;\u003c\/li\u003e\n\u003cli\u003eorientation;\u003c\/li\u003e\n\u003cli\u003einsulation level;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003ethe presence of a kitchen;\u003c\/li\u003e\n\u003cli\u003eopenings to other rooms;\u003c\/li\u003e\n\u003cli\u003eexposure on the top floor;\u003c\/li\u003e\n\u003cli\u003eheat loss;\u003c\/li\u003e\n\u003cli\u003enatural air circulation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a five-zone configuration, this step becomes even more important than with a simple wall-mounted heat pump.\u003c\/p\u003e\n\u003ch3\u003eA typical scenario: a three-level home with five truly distinct spaces\u003c\/h3\u003e\n\u003cp\u003eLet's consider a configuration we regularly encounter in Greater Montreal.\u003c\/p\u003e\n\u003cp\u003eA home includes:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ean open-concept living room, kitchen, and dining area on the main floor;\u003c\/li\u003e\n\u003cli\u003ea primary bedroom;\u003c\/li\u003e\n\u003cli\u003etwo secondary bedrooms;\u003c\/li\u003e\n\u003cli\u003ea finished basement.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe homeowner wants to control five areas separately.\u003c\/p\u003e\n\u003cp\u003eInstalling five independent systems would require five outdoor units. This could take up considerable space along the side of the property and complicate the installation's appearance.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003eSENVILLE 48,000 BTU multizone heat pump\u003c\/strong\u003e makes it possible to concentrate all cooling output around a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003eHowever, the five indoor units will not necessarily have the same capacity.\u003c\/p\u003e\n\u003cp\u003eThe main living area may require a significantly larger unit than the bedrooms. The basement may need a different capacity from a bedroom located directly beneath the attic.\u003c\/p\u003e\n\u003cp\u003eThe indoor units must therefore be selected based on the actual building requirements, rather than simply by mathematically dividing the outdoor unit's capacity.\u003c\/p\u003e\n\u003ch3\u003eThe SENA-48HF-MOA is genuinely designed for multizone applications\u003c\/h3\u003e\n\u003cp\u003eThe supplied brochure illustrates a two-zone commercial configuration with two 24,000 BTU units, but it clearly identifies the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e as a platform capable of supporting \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a five-zone AirGreen configuration, we use this same outdoor platform with a combination of compatible indoor units suited to the property's needs.\u003c\/p\u003e\n\u003cp\u003eThis is an important detail for product SEO: the Senville product page shown in the brochure displays two indoor units because it presents a specific two-zone setup, not because the outdoor unit is limited to two zones. The technical specifications clearly establish a range of \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e23 SEER2: impressive efficiency for a high-capacity multizone heat pump\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e delivers a rating of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville also indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 4: 11\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 5: 9\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal COP: 3.7 W\/W\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSEER2 represents seasonal cooling efficiency. For a property using five indoor units for a significant portion of the summer, the efficiency of the outdoor compressor becomes particularly important.\u003c\/p\u003e\n\u003cp\u003eHowever, \u003cstrong\u003e23 SEER2\u003c\/strong\u003e should not be interpreted as an automatic guarantee of minimal energy consumption.\u003c\/p\u003e\n\u003cp\u003eActual performance also depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003enumber of zones calling for output;\u003c\/li\u003e\n\u003cli\u003eprogrammed temperatures;\u003c\/li\u003e\n\u003cli\u003esizing of each indoor unit;\u003c\/li\u003e\n\u003cli\u003efilter condition;\u003c\/li\u003e\n\u003cli\u003einstallation quality;\u003c\/li\u003e\n\u003cli\u003etotal piping length;\u003c\/li\u003e\n\u003cli\u003ebuilding insulation;\u003c\/li\u003e\n\u003cli\u003efrequency of use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA highly rated but improperly sized heat pump may operate under less favorable conditions than a properly selected system.\u003c\/p\u003e\n\u003ch3\u003eA very wide modulation range\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit’s technical data indicates a cooling capacity of \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e, with an operating range of approximately \u003cstrong\u003e12,000 to 57,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn heating mode, the stated nominal capacity is \u003cstrong\u003e49,000 BTU\/h\u003c\/strong\u003e, with a range of \u003cstrong\u003e13,000 to 57,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is especially meaningful with five zones.\u003c\/p\u003e\n\u003cp\u003eAt one point, only one bedroom may need heating. Two hours later, four zones may simultaneously request energy.\u003c\/p\u003e\n\u003cp\u003eThe inverter compressor adjusts its output within its operating range rather than constantly running at maximum capacity.\u003c\/p\u003e\n\u003ch3\u003eFive zones do not provide five times 48,000 BTU\u003c\/h3\u003e\n\u003cp\u003eThis is a fundamental distinction.\u003c\/p\u003e\n\u003cp\u003eThe indoor units may have significant combined nominal capacities, but the actual available output always depends on what the outdoor unit can provide.\u003c\/p\u003e\n\u003cp\u003eThe heat pump distributes its capacity among the active zones.\u003c\/p\u003e\n\u003cp\u003eWhen several zones simultaneously call for maximum output, the compressor must distribute its production.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, this is precisely why we avoid systematically oversizing every indoor head. A combination that looks overly ambitious on paper can result in a less consistent distribution when all zones are operating at the same time.\u003c\/p\u003e\n\u003ch3\u003eParticularly impressive heating capacity at -8 °C\u003c\/h3\u003e\n\u003cp\u003eAccording to the data for this AirGreen configuration, the heat pump provides approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e45,000 BTU\/h at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP: 2.6 at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis temperature is highly relevant for an installation in \u003cstrong\u003eGreater Montreal\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA COP of 2.6 means that under this given condition, the system can transfer approximately 2.6 units of thermal energy for every unit of electricity used by the refrigeration cycle.\u003c\/p\u003e\n\u003cp\u003eFor a building heated primarily by electricity, this type of performance enables the heat pump to considerably reduce the share of heating provided directly by resistance elements during much of the winter, when the building is properly sized.\u003c\/p\u003e\n\u003ch3\u003e47,000 BTU at -15 °C: capacity remains high\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003e-15 °C\u003c\/strong\u003e, the data provided indicates approximately \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e of heating capacity.\u003c\/p\u003e\n\u003cp\u003eThis is an important characteristic for a \u003cstrong\u003ecold-climate heat pump in Quebec\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHowever, the figure must always be considered in relation to the property's heat loss.\u003c\/p\u003e\n\u003cp\u003eA house losing 30,000 BTU\/h at that temperature is in a very different situation from a building losing 55,000.\u003c\/p\u003e\n\u003cp\u003eThe heat pump should never be selected solely on the basis of its maximum capacity: we compare what it can provide with the building's actual needs.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C, the heat pump still operates, but its capacity decreases\u003c\/h3\u003e\n\u003cp\u003eThe stated minimum heating temperature is \u003cstrong\u003e-30 °C\u003c\/strong\u003e. This limit is also confirmed in Senville documentation, which indicates \u003cstrong\u003e-22 °F \/ -30 °C\u003c\/strong\u003e as the minimum outdoor heating temperature. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt this temperature, the AirGreen data indicates approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e24,600 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP: 1.27\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information is essential for the homeowner.\u003c\/p\u003e\n\u003cp\u003eA heat pump advertised as operating at -30 °C does not necessarily produce its full nominal capacity at that temperature.\u003c\/p\u003e\n\u003cp\u003eWith five zones, this reality becomes even more apparent. If all rooms require a great deal of heat during a cold snap at -30 °C, the \u003cstrong\u003e24,600 BTU available\u003c\/strong\u003e must be shared among them.\u003c\/p\u003e\n\u003cp\u003eSupplementary heating may then become necessary depending on the property's heat loss.\u003c\/p\u003e\n\u003ch3\u003eWhy we emphasize this distinction in our estimates\u003c\/h3\u003e\n\u003cp\u003eIn the field, we still encounter homeowners who think that a “48,000 BTU down to -30 °C” heat pump automatically delivers 48,000 BTU at -30 °C.\u003c\/p\u003e\n\u003cp\u003eThese are two different characteristics:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48,000 BTU\u003c\/strong\u003e corresponds to the nominal capacity class;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-30 °C\u003c\/strong\u003e corresponds to the announced operating limit;\u003c\/li\u003e\n\u003cli\u003eThe capacity available at -30 °C is given here as approximately \u003cstrong\u003e24,600 BTU\/h\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePresenting this difference before installation helps avoid unrealistic expectations during the few coldest days of winter.\u003c\/p\u003e\n\u003ch3\u003eA true cold-climate heat pump\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen configuration is listed as \u003cstrong\u003eCOLD CLIMATE: Yes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville also presents this family as a cold-climate heat pump capable of providing heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor an installation in \u003cstrong\u003eMontreal, Laval, Longueuil, on the North Shore or South Shore\u003c\/strong\u003e, this feature is much more relevant than a heat pump designed primarily for climates where severe subzero temperatures are rare.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and AHRI number\u003c\/h3\u003e\n\u003cp\u003eThe configuration is \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e, with reference \u003cstrong\u003e3630067\u003c\/strong\u003e and number \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Senville documentation associated with the product also confirms its ENERGY STAR certification. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor AirGreen, the AHRI number is particularly important when preparing a \u003cstrong\u003eheat pump rebate\u003c\/strong\u003e application.\u003c\/p\u003e\n\u003cp\u003eWe do not verify only the brand or outdoor capacity. The exact unit pairing must meet the requirements applicable to the program.\u003c\/p\u003e\n\u003ch3\u003eA provincial rebate listed at $5,400\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen listing indicates a \u003cstrong\u003e$5,400 provincial rebate\u003c\/strong\u003e for this configuration.\u003c\/p\u003e\n\u003cp\u003eFor a five-zone installation, this amount may represent a significant portion of the project cost.\u003c\/p\u003e\n\u003cp\u003eHowever, we recommend considering this amount as \u003cstrong\u003econditional on final eligibility\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDepending on the applicable program, it may be necessary to verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe exact AHRI;\u003c\/li\u003e\n\u003cli\u003ethe indoor models;\u003c\/li\u003e\n\u003cli\u003ethe building type;\u003c\/li\u003e\n\u003cli\u003ethe ENERGY STAR status;\u003c\/li\u003e\n\u003cli\u003ethe installation location;\u003c\/li\u003e\n\u003cli\u003ethe completion date;\u003c\/li\u003e\n\u003cli\u003ethe supporting documents;\u003c\/li\u003e\n\u003cli\u003ethe rules in effect at the time of the application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe prefer to validate these details before installation so the customer can compare solutions based on realistic information.\u003c\/p\u003e\n\u003ch2\u003eInstalling five zones correctly: the technical details that determine long-term comfort\u003c\/h2\u003e\n\u003ch3\u003eFive wall-mounted heads require a real placement strategy\u003c\/h3\u003e\n\u003cp\u003eIn a five-zone installation, one of the most important decisions is not the compressor model: it is the location of each indoor unit.\u003c\/p\u003e\n\u003cp\u003eA unit can have the right capacity and still serve its zone poorly if it blows toward:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea staircase;\u003c\/li\u003e\n\u003cli\u003ea corridor;\u003c\/li\u003e\n\u003cli\u003ea door that is constantly open;\u003c\/li\u003e\n\u003cli\u003ea wall opposite that is too close;\u003c\/li\u003e\n\u003cli\u003ea large opening leading to another floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we assess airflow before drilling.\u003c\/p\u003e\n\u003cp\u003eFor each zone, we analyze:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewhere occupants spend the most time;\u003c\/li\u003e\n\u003cli\u003ewhere warm air accumulates;\u003c\/li\u003e\n\u003cli\u003ewhere the sun hits;\u003c\/li\u003e\n\u003cli\u003ethe available clearance;\u003c\/li\u003e\n\u003cli\u003ethe drain route;\u003c\/li\u003e\n\u003cli\u003eaccess to the outdoors;\u003c\/li\u003e\n\u003cli\u003ethe piping length.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA head in the corridor does not guarantee comfort in four bedrooms\u003c\/h3\u003e\n\u003cp\u003eThis is a situation we encounter regularly.\u003c\/p\u003e\n\u003cp\u003eA homeowner wants to avoid multiple indoor units and proposes installing one large indoor head in a corridor serving several bedrooms.\u003c\/p\u003e\n\u003cp\u003eWhen the doors are closed, air distribution becomes limited.\u003c\/p\u003e\n\u003cp\u003eA ductless heat pump primarily heats and cools the air it can actually move within its distribution range.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003efive-zone configuration\u003c\/strong\u003e makes it possible to place more distribution points exactly where they are useful, particularly in a compartmentalized home.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included: much more useful when managing five zones\u003c\/h3\u003e\n\u003cp\u003eThe system offers \u003cstrong\u003eWi-Fi\u003c\/strong\u003e, and Senville documentation indicates that the system can be controlled remotely, settings can be changed, and schedules can be created through an app. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith five zones, the feature becomes particularly practical.\u003c\/p\u003e\n\u003cp\u003eFor example, a homeowner can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ekeep unused bedrooms at a different temperature;\u003c\/li\u003e\n\u003cli\u003eincrease living room comfort before returning home;\u003c\/li\u003e\n\u003cli\u003ereduce basement demand overnight;\u003c\/li\u003e\n\u003cli\u003eadjust the zones according to occupancy schedules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eZoning is most valuable when each space is actually used differently.\u003c\/p\u003e\n\u003ch3\u003eThe zones are not five completely independent systems\u003c\/h3\u003e\n\u003cp\u003eThere is an important limitation to keep in mind.\u003c\/p\u003e\n\u003cp\u003eAll indoor units are connected to the same outdoor unit. They therefore do not operate like five independent heat pumps.\u003c\/p\u003e\n\u003cp\u003eThe modes generally need to remain compatible.\u003c\/p\u003e\n\u003cp\u003eThe system should not be designed with the expectation that one room will be heated while another unit connected to the same outdoor unit cools simultaneously.\u003c\/p\u003e\n\u003cp\u003eIn a residential home, this restriction is generally easy to manage.\u003c\/p\u003e\n\u003cp\u003eHowever, it can be significant in certain commercial applications or in a property with areas that have very different heating and cooling loads.\u003c\/p\u003e\n\u003ch3\u003eFive piping runs: design before installation is essential\u003c\/h3\u003e\n\u003cp\u003eA five-zone configuration means multiple sets of refrigerant lines.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product sheet indicates \u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e piping for this platform, but the actual connections for the various indoor units must be verified based on the selected heads and the final configuration.\u003c\/p\u003e\n\u003cp\u003eWe plan for, among other things:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe outlet of each indoor unit;\u003c\/li\u003e\n\u003cli\u003ethe route to the outdoor unit;\u003c\/li\u003e\n\u003cli\u003elengths;\u003c\/li\u003e\n\u003cli\u003eelevation differences;\u003c\/li\u003e\n\u003cli\u003eoutdoor protection;\u003c\/li\u003e\n\u003cli\u003erefrigerant connections;\u003c\/li\u003e\n\u003cli\u003eaccess for servicing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIn a multi-story home, these runs can quickly become one of the most complex parts of the project.\u003c\/p\u003e\n\u003ch3\u003eAn R-454B precharge covering up to 150 feet\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer’s documentation indicates that the unit uses \u003cstrong\u003eR-454B\u003c\/strong\u003e, with a charge of \u003cstrong\u003e151.68 oz\u003c\/strong\u003e and a precharge covering up to \u003cstrong\u003e150 ft of piping\u003c\/strong\u003e according to the rules applicable to the installation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a five-zone system, the total pipe length increases quickly.\u003c\/p\u003e\n\u003cp\u003eThis precharge is therefore useful information, but it does not replace verifying the manufacturer’s maximum lengths and charging requirements.\u003c\/p\u003e\n\u003cp\u003eWe always calculate the actual configuration rather than assuming that “150 ft included” means any combination totaling 150 ft is automatically acceptable.\u003c\/p\u003e\n\u003ch3\u003eFive indoor units also mean five drains\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eA five-zone installation therefore involves \u003cstrong\u003eproperly managing five drains\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhen a natural slope is available, we favor gravity drainage.\u003c\/p\u003e\n\u003cp\u003eWhen the building’s geometry makes this impossible, a condensate pump may be necessary.\u003c\/p\u003e\n\u003cp\u003eThe problems we seek to avoid are very concrete:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewater on the wall;\u003c\/li\u003e\n\u003cli\u003edrain backup;\u003c\/li\u003e\n\u003cli\u003enoisy pump;\u003c\/li\u003e\n\u003cli\u003eodors;\u003c\/li\u003e\n\u003cli\u003esigns of moisture;\u003c\/li\u003e\n\u003cli\u003eshutdowns caused by a safety device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA neat piping layout is not a good installation if drainage has been neglected.\u003c\/p\u003e\n\u003ch3\u003e4,503 CFM outdoors: this unit needs to breathe\u003c\/h3\u003e\n\u003cp\u003eThe SENA-48HF-MOA moves up to approximately \u003cstrong\u003e4,502.8 CFM\u003c\/strong\u003e of air at the outdoor unit. The documentation also confirms a sound level of \u003cstrong\u003e65 dB\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe outdoor unit must therefore not be enclosed in a space that is too narrow.\u003c\/p\u003e\n\u003cp\u003eWe consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003eproximity to a fence;\u003c\/li\u003e\n\u003cli\u003enearby walls;\u003c\/li\u003e\n\u003cli\u003evegetation;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003ethe direction of the noise;\u003c\/li\u003e\n\u003cli\u003esnow;\u003c\/li\u003e\n\u003cli\u003edefrosting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn outdoor heat pump needs substantial airflow to properly exchange energy with the surrounding air.\u003c\/p\u003e\n\u003ch3\u003eA 246.47 lb outdoor unit\u003c\/h3\u003e\n\u003cp\u003eThe stated weight of the outdoor unit is \u003cstrong\u003e246.47 lb\u003c\/strong\u003e, with dimensions of \u003cstrong\u003e37.48 × 16.34 × 52.48 in.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is physically a substantial unit.\u003c\/p\u003e\n\u003cp\u003eThe support must therefore be selected accordingly, particularly in Quebec, where we must also consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efreeze-thaw cycles;\u003c\/li\u003e\n\u003cli\u003esnow;\u003c\/li\u003e\n\u003cli\u003ewater produced during defrost cycles;\u003c\/li\u003e\n\u003cli\u003eground stability;\u003c\/li\u003e\n\u003cli\u003eservice access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt AirGreen, we avoid treating a unit of this size like a standard small wall-mounted compressor.\u003c\/p\u003e\n\u003ch3\u003e65 dB: the acoustic location matters\u003c\/h3\u003e\n\u003cp\u003eThe specified outdoor sound level is \u003cstrong\u003e65 dB\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe number alone does not fully describe how the noise is perceived.\u003c\/p\u003e\n\u003cp\u003eA unit placed in a very narrow passage between two walls may seem more noticeable than a unit installed in an open space.\u003c\/p\u003e\n\u003cp\u003eWe avoid whenever possible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ebedroom windows;\u003c\/li\u003e\n\u003cli\u003epatios;\u003c\/li\u003e\n\u003cli\u003eenclosed courtyards;\u003c\/li\u003e\n\u003cli\u003ewalls that can strongly reflect noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical supply: MCA of 37 A, MOP of 40 A\u003c\/h3\u003e\n\u003cp\u003eThe SENA-48HF-MOA operates on \u003cstrong\u003e208\/230 V single-phase\u003c\/strong\u003e, with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn some Montreal homes still equipped with a more limited electrical service, this information must be verified before ordering.\u003c\/p\u003e\n\u003cp\u003eA five-zone heat pump is not a device we recommend adding to a panel without checking the existing load.\u003c\/p\u003e\n\u003ch3\u003eBuilt-in diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville documentation mentions \u003cstrong\u003eautomatic diagnostics and leak detection\u003c\/strong\u003e functions, designed to signal certain anomalies and facilitate maintenance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn an installation with five zones, this function can be particularly useful because a problem does not always manifest itself identically in all the indoor units.\u003c\/p\u003e\n\u003cp\u003eA diagnostic code is nevertheless a starting point. A technician must still check the pressure, temperatures, communications, and electrical parameters before determining the cause of a failure.\u003c\/p\u003e\n\u003ch3\u003eMaintenance: at least five filters, five units to monitor\u003c\/h3\u003e\n\u003cp\u003eA five-zone heat pump offers considerable flexibility, but it also involves more indoor units to maintain.\u003c\/p\u003e\n\u003cp\u003eEach head has:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eits filters;\u003c\/li\u003e\n\u003cli\u003eits heat exchanger;\u003c\/li\u003e\n\u003cli\u003eits fan;\u003c\/li\u003e\n\u003cli\u003eits condensate pan;\u003c\/li\u003e\n\u003cli\u003eits drain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe particularly recommend:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclean the filters regularly;\u003c\/li\u003e\n\u003cli\u003echeck the fans when airflow decreases;\u003c\/li\u003e\n\u003cli\u003emonitor the drains;\u003c\/li\u003e\n\u003cli\u003ekeep the air inlets clear;\u003c\/li\u003e\n\u003cli\u003ekeep the outdoor unit free of leaves and snow;\u003c\/li\u003e\n\u003cli\u003ecarry out a thorough cleaning when the buildup requires it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA very dirty head may behave differently from the other four and give the impression of a distribution problem when the actual cause is simply insufficient airflow.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference to clarify between the AirGreen specification sheet and the brochure\u003c\/h3\u003e\n\u003cp\u003eAirGreen’s data indicates a \u003cstrong\u003e10-10-0 manufacturer’s warranty\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eThe attached brochure, for its part, indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt also specifies that professional installation is required to maintain warranty coverage and the expected performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe therefore recommend confirming at the time of quotation the exact warranty applicable to the combination sold, the registration requirements, and the service territory.\u003c\/p\u003e\n\u003ch3\u003eWhy this configuration may suit a large home in Montreal or on the South Shore\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE 5-zone R454B 48,000 BTU\u003c\/strong\u003e can be particularly suitable when a property:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edoes not have ductwork;\u003c\/li\u003e\n\u003cli\u003econtains several enclosed rooms;\u003c\/li\u003e\n\u003cli\u003ehas three levels;\u003c\/li\u003e\n\u003cli\u003ehas a finished basement;\u003c\/li\u003e\n\u003cli\u003erequires several distribution points;\u003c\/li\u003e\n\u003cli\u003ehas limited outdoor space for several condensers;\u003c\/li\u003e\n\u003cli\u003equalifies for a pairing eligible for financial incentives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt therefore combines several important characteristics:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e23 SEER2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e11 HSPF2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eheating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e45,000 BTU at -8 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e47,000 BTU at -15 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ecold-climate certification\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003epossibility of five zone controls\u003c\/li\u003e\n\u003cli\u003erebate indicated up to \u003cstrong\u003e5 400 $\u003c\/strong\u003e, subject to eligibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen we would instead consider several independent systems\u003c\/h3\u003e\n\u003cp\u003eA five-zone system is not always the best solution.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we may prioritize two or more independent systems when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe zones have extremely different needs;\u003c\/li\u003e\n\u003cli\u003esome zones need to operate frequently in opposite modes;\u003c\/li\u003e\n\u003cli\u003eredundancy is a priority;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant lines become excessively long;\u003c\/li\u003e\n\u003cli\u003ethe outdoor space can easily accommodate several units;\u003c\/li\u003e\n\u003cli\u003ethe building would be better served by several independent capacities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA single large outdoor unit offers an obvious space-saving advantage, but it also concentrates all five zones around one machine.\u003c\/p\u003e\n\u003cp\u003eThis reality is part of the selection process.\u003c\/p\u003e\n\u003ch3\u003eWhy AirGreen treats a five-zone installation as an HVAC design project\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Climatisation \u0026amp; Chauffage\u003c\/strong\u003e, we believe that a five-zone system requires more than simply selecting five wall-mounted units.\u003c\/p\u003e\n\u003cp\u003eWe need to coordinate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efive heating loads;\u003c\/li\u003e\n\u003cli\u003efive locations;\u003c\/li\u003e\n\u003cli\u003efive drains;\u003c\/li\u003e\n\u003cli\u003efive refrigerant lines;\u003c\/li\u003e\n\u003cli\u003ecommunications;\u003c\/li\u003e\n\u003cli\u003ethe electrical circuit;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit;\u003c\/li\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003esupport;\u003c\/li\u003e\n\u003cli\u003ecommissioning;\u003c\/li\u003e\n\u003cli\u003eeligibility for rebates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis coordination is what transforms a collection of equipment into a true \u003cstrong\u003emulti-zone HVAC\u003c\/strong\u003e system.\u003c\/p\u003e\n\u003cp\u003eA properly configured 48,000 BTU SENVILLE can provide excellent comfort control across multiple areas. Conversely, poorly distributed capacities can result in one zone being overheated, another insufficiently cooled, and a third operating unnecessarily.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for your SENVILLE 5-Zone 48,000 BTU system\u003c\/h3\u003e\n\u003cp\u003eAre you considering a \u003cstrong\u003eSENVILLE R454B 48,000 BTU 5-zone heat pump\u003c\/strong\u003e for a house, duplex, multi-unit building, or commercial space?\u003c\/p\u003e\n\u003cp\u003eContact \u003cstrong\u003eAirGreen\u003c\/strong\u003e for a complete assessment. We can analyze the needs of each of the five zones, select the appropriate indoor units, check the electrical supply, plan the piping and drainage, determine the outdoor unit location, and verify applicable financial incentives.\u003c\/p\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003emulti-zone heat pump installations in Montreal, Laval, Longueuil, on the North Shore, South Shore, and in Montérégie\u003c\/strong\u003e, with particular attention to sizing, winter efficiency, and installation quality.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"9 + 9 + 9 + 9 + 9","offer_id":56201214165284,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_5_ZONES_SENVILLE_R454B_48000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057877"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/collections\/00_THERMOPOMPE_5_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD_79458e66-3dd6-48e4-9a6d-95900a31e422.png?v=1789067769","url":"https:\/\/airgreen.ca\/en\/collections\/thermopompe-multi-zone-senville-installation-a-montreal-laval-longueuil-rive-sud-et-rive-nord.oembed","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}