{"title":"Thermopompe 3-Zones SENVILLE | Montréal, Laval, Rive Sud \u0026 Nord","description":null,"products":[{"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/collections\/00_THERMOPOMPE_3_ZONES_SENVILLE_R454B_18000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD_db427177-aca5-4b76-8d3d-ab15bc43b30c.png?v=1789059260","url":"https:\/\/airgreen.ca\/en\/collections\/thermopompe-3-zones-senville-montreal-laval-rive-sud-nord.oembed","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}