{"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","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-2-zones-senville-r454b-18000-btu","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}