{"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=1789390511","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-2-zones-senville-r454b-27000-btu","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}