{"title":"Thermopompe 4-Zones SENVILLE | Montréal, Laval, Rive Sud \u0026 Nord","description":null,"products":[{"product_id":"thermopompe-4-zones-senville-r454b-27000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 27000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eUp to four zones on a single outdoor unit: a highly appealing multi-zone solution when several rooms need to be heated and cooled independently\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e4-zone heat pump\u003c\/strong\u003e is not simply a large wall-mounted heat pump with several heads added to it. Sizing, capacity distribution among the rooms, total refrigerant piping length, and how occupants use each zone become critical.\u003c\/p\u003e\n\u003cp\u003eThe system presented here is based on the \u003cstrong\u003eSENVILLE SENA-28HF-MOA\u003c\/strong\u003e outdoor unit, operating with \u003cstrong\u003eR-454B\u003c\/strong\u003e, with a commercial capacity of approximately \u003cstrong\u003e27,000 to 28,000 BTU\u003c\/strong\u003e depending on the technical source used. Senville documentation confirms that this outdoor unit supports \u003cstrong\u003e2 to 4 zones\u003c\/strong\u003e, making it possible to create a true four-zone configuration with compatible indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Heat Pumps, Air Conditioning \u0026amp; Heating\u003c\/strong\u003e, this type of system is particularly relevant in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e when a property has several bedrooms or distinct spaces that cannot be properly served by a single wall-mounted head.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product page associates this unit with the following specifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-28HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum configuration: 4 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735314\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplayed cooling capacity: 27,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER: 12.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF: 10.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 220 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 61 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplayed provincial rebate: $3,600\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630061\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe manufacturer documentation provided lists \u003cstrong\u003e28,000 nominal BTU\u003c\/strong\u003e, a \u003cstrong\u003eSEER of 23.8\u003c\/strong\u003e, an \u003cstrong\u003eEER of 12.5\u003c\/strong\u003e, and an \u003cstrong\u003eHSPF4 of 10.5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e This slight difference between 27,000 and 28,000 BTU, or between SEER 23.0 and 23.8, should simply be attributed to the exact certified combination used on the AirGreen product page.\u003c\/p\u003e\n\u003ch3\u003eThe attached brochure shows two zones, but the SENA-28HF-MOA unit can support four\u003c\/h3\u003e\n\u003cp\u003eThe brochure’s first page commercially presents a \u003cstrong\u003edual-zone\u003c\/strong\u003e configuration, with two indoor units of \u003cstrong\u003e12,000 BTU each\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis could give the impression that the SENA-28HF-MOA is only a 2-zone system. However, the technical table clarifies the point: \u003cstrong\u003eNumber of Zones: 2–4\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor this article about a \u003cstrong\u003eSENVILLE 4-zone heat pump\u003c\/strong\u003e, we are therefore referring to this outdoor unit’s ability to power up to four compatible indoor units.\u003c\/p\u003e\n\u003cp\u003eHowever, the brochure provided does not specify the exact combination of the four heads that will be used on the AirGreen listing. We should therefore not invent four precise indoor capacities. They must be selected according to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe heat load of each room;\u003c\/li\u003e\n\u003cli\u003ethe combinations authorized by Senville;\u003c\/li\u003e\n\u003cli\u003ethe admissible total connected capacity;\u003c\/li\u003e\n\u003cli\u003ethe certification applicable to the complete combination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe main advantage of a 4-zone system: no longer forcing a single head to condition the entire home\u003c\/h3\u003e\n\u003cp\u003eWe regularly encounter properties where a wall-mounted heat pump is installed in the living room in the hope that it will also cool the bedrooms farther away.\u003c\/p\u003e\n\u003cp\u003eIn an open area, this can sometimes work properly.\u003c\/p\u003e\n\u003cp\u003eIn a home with multiple doors, a hallway, and separate bedrooms, air circulation becomes much more limited.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e4-zone\u003c\/strong\u003e configuration, by contrast, allows an indoor unit to be installed in each strategic area. For example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone unit for the living room;\u003c\/li\u003e\n\u003cli\u003eone for the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone for two bedrooms or an upstairs area, depending on the layout;\u003c\/li\u003e\n\u003cli\u003eone for the basement or an office.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach zone then gets its own temperature control.\u003c\/p\u003e\n\u003cp\u003eFor a home in \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e, this approach can be much more comfortable than a single large heat pump installed in a central area.\u003c\/p\u003e\n\u003ch3\u003eFour independent zones do not mean four independent compressors\u003c\/h3\u003e\n\u003cp\u003eThis is one of the most important concepts to understand about a multi-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eEach head can have its own setting, but the four indoor units share \u003cstrong\u003ethe same SENA-28HF-MOA outdoor unit\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure lists a rated cooling capacity of approximately \u003cstrong\u003e28,000 BTU\/h\u003c\/strong\u003e, with an operating range of approximately \u003cstrong\u003e9,838 to 30,438 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn heating mode, the rated capacity is also listed at \u003cstrong\u003e28,000 BTU\/h\u003c\/strong\u003e, with a range of approximately \u003cstrong\u003e8,218 to 31,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe compressor therefore does not produce 27,000 or 28,000 BTUs for each of the four heads.\u003c\/p\u003e\n\u003cp\u003eIt distributes its available capacity according to the demands of the different zones.\u003c\/p\u003e\n\u003ch3\u003eWhy sizing each indoor head is crucial\u003c\/h3\u003e\n\u003cp\u003eSuppose a homeowner has four rooms of very different sizes.\u003c\/p\u003e\n\u003cp\u003eInstalling four identical indoor units solely to simplify ordering would rarely be the best strategy.\u003c\/p\u003e\n\u003cp\u003eA 150 sq. ft. bedroom and a 500 sq. ft. open living area do not have the same load.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore want to determine:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ehow many BTUs are actually needed in each zone;\u003c\/li\u003e\n\u003cli\u003ewhether the four units can be combined with the SENA-28HF-MOA;\u003c\/li\u003e\n\u003cli\u003ewhether the total connected capacity remains compliant;\u003c\/li\u003e\n\u003cli\u003ewhether the distribution will remain logical when several zones simultaneously require their full capacity.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis step is particularly important for a multi-zone system because a sizing error in one room can affect overall operation.\u003c\/p\u003e\n\u003ch3\u003eSEER from 23 to 23.8: an appealing efficiency for a multi-zone system\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet lists a \u003cstrong\u003eSEER of 23.0\u003c\/strong\u003e, while the brochure table gives \u003cstrong\u003e23.8\u003c\/strong\u003e for the SENA-28HF-MOA. The \u003cstrong\u003e12.5\u003c\/strong\u003e EER is consistent across the information provided. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a system that can supply four zones, this efficiency is particularly relevant.\u003c\/p\u003e\n\u003cp\u003eA properly used multi-zone system also makes it possible to concentrate comfort where it is actually needed.\u003c\/p\u003e\n\u003cp\u003eIf occupants mainly use two rooms during the day, it is not essential to maintain exactly the same setpoint in all four zones.\u003c\/p\u003e\n\u003cp\u003eThis approach may be worthwhile in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea large house;\u003c\/li\u003e\n\u003cli\u003ea duplex;\u003c\/li\u003e\n\u003cli\u003ea multi-bedroom condo;\u003c\/li\u003e\n\u003cli\u003ea partially occupied basement;\u003c\/li\u003e\n\u003cli\u003ea home office;\u003c\/li\u003e\n\u003cli\u003ecertain small commercial spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHeating down to -30 °C: a true cold-climate heat pump\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE is identified as \u003cstrong\u003eCold Climate\u003c\/strong\u003e, and the brochure states that it operates in heating mode down to \u003cstrong\u003e-22 °F, or -30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet provides much more useful capacities for understanding its winter performance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e30,000 BTU\/h at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e27,000 BTU\/h at -15 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e14,000 BTU\/h maximum at -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe stated COP is approximately \u003cstrong\u003e2.36 at -8 °C\u003c\/strong\u003e and \u003cstrong\u003e1.26 at -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThese figures clearly show why we never simply say that a heat pump “works at -30 °C.”\u003c\/p\u003e\n\u003cp\u003eIt can continue heating at this temperature, but its maximum capacity then drops to approximately \u003cstrong\u003e14,000 BTU\/h\u003c\/strong\u003e according to AirGreen data.\u003c\/p\u003e\n\u003ch3\u003eAt -15 °C, the capacity remains close to the system’s rated capacity.\u003c\/h3\u003e\n\u003cp\u003eThe figure of \u003cstrong\u003e27,000 BTU\/h at -15 °C\u003c\/strong\u003e is particularly important in the Quebec context.\u003c\/p\u003e\n\u003cp\u003eAt this temperature, the unit may still provide a capacity comparable to its advertised rated output.\u003c\/p\u003e\n\u003cp\u003eFor an installation in \u003cstrong\u003eMontréal, Laval, Longueuil, Boucherville, or the North Shore\u003c\/strong\u003e, this behavior is often more economically relevant than the performance observed during a few extremely cold hours at -30 °C.\u003c\/p\u003e\n\u003cp\u003eWe want to know what proportion of the heating season can be effectively covered by the heat pump before backup systems become necessary.\u003c\/p\u003e\n\u003ch3\u003eA four-zone configuration requires consideration of simultaneous operation in winter\u003c\/h3\u003e\n\u003cp\u003eConsider four zones that all require substantial heating on a January morning.\u003c\/p\u003e\n\u003cp\u003eThe outdoor unit has a specified overall capacity. It must therefore distribute that capacity among all the indoor heads calling for heat.\u003c\/p\u003e\n\u003cp\u003eThat is why a homeowner should not simply add the rated capacities listed for the four indoor units and consider that total to be the system's guaranteed output.\u003c\/p\u003e\n\u003cp\u003eThe actual maximum output depends on the outdoor unit, the temperature, and the installed combination.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and a $3,600 provincial rebate\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR®: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR ID: 3630061\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eas well as an \u003cstrong\u003eadvertised provincial rebate of $3,600\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer's brochure also identifies the series as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e and highlights operation down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs always, rebate programs must be confirmed at the time of quotation.\u003c\/p\u003e\n\u003cp\u003eOn a multi-zone system, this verification is particularly important because eligibility may depend not only on the outdoor unit, but also on the \u003cstrong\u003eexact combination of indoor units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA 1,300-to-1,500-square-foot recommendation to use with caution\u003c\/h3\u003e\n\u003cp\u003eSenville indicates an approximate range of \u003cstrong\u003e1,300 to 1,500 sq. ft.\u003c\/strong\u003e for the configuration presented in its brochure. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, it should be noted that this commercial page shows a \u003cstrong\u003edual-zone 12,000 + 12,000 BTU\u003c\/strong\u003e configuration.\u003c\/p\u003e\n\u003cp\u003eWe therefore should not automatically take this floor area and present it as an absolute rule for every four-zone configuration.\u003c\/p\u003e\n\u003cp\u003eFour small, well-insulated zones may have a different load from four rooms in an older building with a lot of fenestration.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we use floor area as a starting point, never as the final calculation.\u003c\/p\u003e\n\u003ch2\u003eInstallation details that become critical when a single outdoor unit supplies four zones\u003c\/h2\u003e\n\u003ch3\u003eA precharge that can cover up to 100 feet of piping\u003c\/h3\u003e\n\u003cp\u003eThe SENA-28HF-MOA contains approximately \u003cstrong\u003e120.61 oz of R-454B\u003c\/strong\u003e, and the documentation indicates a refrigerant precharge designed for up to \u003cstrong\u003e100 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also mentions this 100-foot precharge in its product presentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a four-zone system, this detail deserves particular attention because the lengths add up quickly.\u003c\/p\u003e\n\u003cp\u003eIf the outdoor unit is located at ground level and several indoor heads are on different floors or façades, the project's total length can become considerable.\u003c\/p\u003e\n\u003cp\u003eWe must therefore calculate precisely:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe length of each circuit;\u003c\/li\u003e\n\u003cli\u003ethe total length;\u003c\/li\u003e\n\u003cli\u003ethe height differences;\u003c\/li\u003e\n\u003cli\u003ethe fittings;\u003c\/li\u003e\n\u003cli\u003ethe additional charge requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe “1\/4 – 3\/8” data must not be used as a complete piping plan\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003e1\/4 in – 3\/8 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eOn a 4-zone system, this general information is not enough to determine the diameter of each branch without knowing which indoor units have been selected.\u003c\/p\u003e\n\u003cp\u003eWe always validate the connections port by port according to the actual combination.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important when heads with different capacities are combined on the same outdoor unit.\u003c\/p\u003e\n\u003ch3\u003eEach indoor head produces its own condensate\u003c\/h3\u003e\n\u003cp\u003eFour zones potentially mean \u003cstrong\u003efour separate drains\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn a simple installation, we can often use gravity drainage.\u003c\/p\u003e\n\u003cp\u003eIn a more complex home, some heads may require a much longer route or a specialized solution when a natural slope is impossible.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan the drainage at the same time as the refrigerant lines.\u003c\/p\u003e\n\u003cp\u003eAn installation where the pipes are properly installed but the condensate cannot drain correctly is still a poor installation.\u003c\/p\u003e\n\u003ch3\u003eAutomatic vertical and horizontal louvers\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications indicate \u003cstrong\u003eautomatic vertical and horizontal louvers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn a four-indoor-unit system, this helps direct the airflow independently in each space.\u003c\/p\u003e\n\u003cp\u003eHowever, even with motorized louvers, the location of each head remains essential.\u003c\/p\u003e\n\u003cp\u003eWe try to avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ean unit blowing directly onto the bed;\u003c\/li\u003e\n\u003cli\u003ea head hidden behind a beam or partition;\u003c\/li\u003e\n\u003cli\u003ean installation oriented toward a door rather than the room;\u003c\/li\u003e\n\u003cli\u003ean indoor unit installed too close to the ceiling without adequate clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBe careful with the figure of 2,130 CFM: it refers to the outdoor airflow\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specifications mention approximately \u003cstrong\u003e2,130 CFM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer’s table specifies that this value of \u003cstrong\u003e2,129.41 CFM corresponds to the maximum airflow of the outdoor unit\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is not the combined airflow of the four indoor units.\u003c\/p\u003e\n\u003cp\u003eThis distinction is important to avoid confusion in the product specifications.\u003c\/p\u003e\n\u003cp\u003eThe outdoor unit must be able to freely draw in and discharge this volume of air. It therefore must not be installed in an overly enclosed space or behind an excessively restrictive decorative structure.\u003c\/p\u003e\n\u003ch3\u003e61 dB(A) outdoors\u003c\/h3\u003e\n\u003cp\u003eThe stated outdoor sound level is \u003cstrong\u003e61 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a multizone unit of this capacity, the location therefore deserves careful consideration.\u003c\/p\u003e\n\u003cp\u003eWe specifically consider:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ebedroom windows;\u003c\/li\u003e\n\u003cli\u003ethe deck;\u003c\/li\u003e\n\u003cli\u003eneighboring properties;\u003c\/li\u003e\n\u003cli\u003ewalls that may reflect noise;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003emunicipal regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe shortest piping route is not always the best choice if the unit ends up directly below a bedroom.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing 168 lb\u003c\/h3\u003e\n\u003cp\u003eThe dimensions are:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 in × 16.14 in × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003efor a weight of approximately \u003cstrong\u003e168.43 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA solid installation is therefore essential.\u003c\/p\u003e\n\u003cp\u003eDepending on the property, we can use a suitable base or support, taking snow, access, and long-term stability into account.\u003c\/p\u003e\n\u003ch3\u003e208\/230 V, MCA 30 A, and maximum protection of 35 A\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003esingle-phase;\u003c\/li\u003e\n\u003cli\u003e60 Hz;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 30 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003emaximum fuse: 35 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003econnection wiring: \u003cstrong\u003e14\/4 AWG\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information is consistent with the AirGreen specification sheet.\u003c\/p\u003e\n\u003cp\u003eBefore installation, however, we must confirm the panel's actual capacity and the project's specific electrical requirements.\u003c\/p\u003e\n\u003ch3\u003eWiFi included and independent zone control\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003eWiFi included\u003c\/strong\u003e, and the brochure confirms smart control through Alexa or an app for the system presented. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith four zones, this feature becomes particularly useful.\u003c\/p\u003e\n\u003cp\u003eFor example, a homeowner can maintain a different temperature in a bedroom than in the living room and reduce operation in an unused office over the weekend.\u003c\/p\u003e\n\u003cp\u003eThe true value of a multi-zone system appears precisely when this independence is used instead of setting all the units to the same temperature year-round.\u003c\/p\u003e\n\u003ch3\u003eAn interesting user review about comfort, but also about connectivity\u003c\/h3\u003e\n\u003cp\u003eThe brochure contains a review from a verified Canadian buyer stating that the system made their home comfortable during the summer. However, they mention not using certain connected features as intended. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis illustrates a practical point: the WiFi must be configured correctly, and the user must understand the necessary accessories and applications.\u003c\/p\u003e\n\u003cp\u003eDuring an AirGreen installation, commissioning should therefore not be limited to checking that the compressor starts.\u003c\/p\u003e\n\u003ch3\u003eWarranty: the AirGreen specification sheet and the brochure do not provide exactly the same coverage\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates a warranty:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ewith the possibility of additional warranty coverage.\u003c\/p\u003e\n\u003cp\u003eThe Senville documentation provided, for its part, states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table lists the same coverage: 10 years on the compressor and 5 years on parts. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIf AirGreen benefits from a special program offering 10 years on parts, it is best to confirm this clearly in the quote and on the final specification sheet.\u003c\/p\u003e\n\u003ch3\u003eA Scenario Where Four Zones Make Much More Sense Than One Large Indoor Unit\u003c\/h3\u003e\n\u003cp\u003eConsider a two-storey house with three bedrooms and an open main living area.\u003c\/p\u003e\n\u003cp\u003eWith a single high-capacity unit in the living room, the bedrooms can remain uncomfortable when their doors are closed.\u003c\/p\u003e\n\u003cp\u003eA four-zone system can allow:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone unit for the main living area;\u003c\/li\u003e\n\u003cli\u003eone unit for the primary bedroom;\u003c\/li\u003e\n\u003cli\u003etwo additional units for bedrooms or separate spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe outdoor unit remains a single unit, but air distribution becomes much more precise.\u003c\/p\u003e\n\u003cp\u003eThis is exactly the type of project where a \u003cstrong\u003e4-zone heat pump in Montreal, Laval, or Longueuil\u003c\/strong\u003e can offer a tangible advantage.\u003c\/p\u003e\n\u003ch3\u003eWhen Two Independent Heat Pumps May Nonetheless Be Preferable\u003c\/h3\u003e\n\u003cp\u003eA multi-zone system is not automatically better.\u003c\/p\u003e\n\u003cp\u003eTwo separate systems may be appropriate if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe zones are very far apart;\u003c\/li\u003e\n\u003cli\u003ethe building consists of two separate dwellings;\u003c\/li\u003e\n\u003cli\u003eredundancy is a priority;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant line runs become excessively complex.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a multi-zone system, a single outdoor unit serves all the zones. A failure of this unit can therefore affect several rooms at once.\u003c\/p\u003e\n\u003cp\u003eWe always compare this reality with the benefits of a cleaner-looking exterior façade and a single condenser.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose AirGreen for a SENVILLE 4-Zone Installation\u003c\/h3\u003e\n\u003cp\u003eA four-zone installation requires much more planning than a single-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we check:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe heating load of each of the four zones;\u003c\/li\u003e\n\u003cli\u003ecompatible indoor capacities;\u003c\/li\u003e\n\u003cli\u003ethe certified combination with the \u003cstrong\u003eSENA-28HF-MOA\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethe length of each line set;\u003c\/li\u003e\n\u003cli\u003ethe total refrigerant charge;\u003c\/li\u003e\n\u003cli\u003edrainage for each indoor unit;\u003c\/li\u003e\n\u003cli\u003ewall penetrations;\u003c\/li\u003e\n\u003cli\u003ethe outdoor location;\u003c\/li\u003e\n\u003cli\u003ethe 208\/230 V power supply;\u003c\/li\u003e\n\u003cli\u003efuture maintenance needs;\u003c\/li\u003e\n\u003cli\u003ethe certification and applicable subsidy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003emulti-zone heat pump projects in Montreal, Laval, Longueuil, on the South Shore, the North Shore, and in Montérégie\u003c\/strong\u003e, with particular attention to airflow and the actual sizing of each room.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-28HF-MOA R454B\u003c\/strong\u003e offers very appealing features for this type of project: \u003cstrong\u003eup to four zones, ENERGY STAR, Cold Climate, heating down to -30 °C, high seasonal efficiency, WiFi, inverter modulation, and a refrigerant charge suitable for lines up to 100 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen to get a quote for the SENVILLE R454B 27,000 BTU 4-zone heat pump, determine the right capacities for each of your rooms, and confirm the applicable subsidy in Montreal, Laval, Longueuil, on the South Shore or the North Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120040096036,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_27000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057786"},{"product_id":"thermopompe-4-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 36000 BTU","description":"\u003ch2\u003eA 36,000 BTU multi-zone solution for distributing comfort across four rooms without multiplying the number of outdoor units\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 36,000 BTU 4-Zone Heat Pump\u003c\/strong\u003e addresses a problem we regularly encounter at AirGreen in homes, condos, duplexes, and small buildings in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e: several rooms need independent temperature control, but installing three or four outdoor units on the property would be cumbersome, unattractive, or simply impossible.\u003c\/p\u003e\n\u003cp\u003eThe heart of the system is the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e outdoor unit. Its technical specifications indicate that it can supply \u003cstrong\u003etwo to five zones\u003c\/strong\u003e, making it fully compatible with a project involving four indoor units when the selected combination complies with the manufacturer's limits. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis flexibility is particularly valuable in a home with multiple bedrooms, a floor divided into offices, a duplex where certain zones are difficult to balance, or a ground floor and upper floor with very different heating and cooling needs.\u003c\/p\u003e\n\u003cp\u003eInstead of trying to move air from a single wall-mounted head through doors, corridors, and stairways, we can distribute the available capacity directly where it is needed.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen configuration notably features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-36HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735317\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated capacity: 36,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 13.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.7\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eheating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003epower supply \u003cstrong\u003e220 V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level: \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003emax outdoor airflow: approximately \u003cstrong\u003e3,038 CFM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003edisplayed provincial rebate: \u003cstrong\u003e4 560 $\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe official brochure confirms that the SENA-36HF-MOA has a capacity of 36,000 BTU, a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e, an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e, an \u003cstrong\u003eHSPF2 Region 4 of 10.7\u003c\/strong\u003e, a 208\/230 V power supply, and compatibility with \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThe brochure shows two zones, but the outdoor unit can support up to five.\u003c\/h3\u003e\n\u003cp\u003eThe first page of the documentation presents a commercial configuration in \u003cstrong\u003edual zone\u003c\/strong\u003e, with two 18,000 BTU indoor units. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis image can be confusing if you look only at the photo.\u003c\/p\u003e\n\u003cp\u003eThe most important information is found in the technical table: the \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e outdoor model is designed for \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis means that a four-zone system is entirely possible, but the compatible indoor units must be selected and the combinations approved by Senville must be followed.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we never design a multi-zone system by arbitrarily adding four heads.\u003c\/p\u003e\n\u003cp\u003eWe check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe capacity required by each room;\u003c\/li\u003e\n\u003cli\u003ethe compatible indoor models;\u003c\/li\u003e\n\u003cli\u003ethe sum of the connected rated capacities;\u003c\/li\u003e\n\u003cli\u003ethe manufacturer’s combination limits;\u003c\/li\u003e\n\u003cli\u003epiping lengths;\u003c\/li\u003e\n\u003cli\u003ethe available capacity when multiple zones simultaneously require heating or cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e36,000 BTU does not mean 9,000 BTU guaranteed in each of the four rooms\u003c\/h3\u003e\n\u003cp\u003eThis is an essential point to understand before purchasing a \u003cstrong\u003efour-zone heat pump\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe system does not automatically divide 36,000 BTU into four fixed 9,000-BTU portions.\u003c\/p\u003e\n\u003cp\u003eCapacity is dynamically shared among the indoor units according to their demands.\u003c\/p\u003e\n\u003cp\u003eThe brochure states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU\/h of rated cooling capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling range of \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU\/h of rated heating capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating range of \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis modulation range allows the inverter compressor to adjust its output.\u003c\/p\u003e\n\u003cp\u003eIf only two small bedrooms need cooling, the system can operate at a lower capacity. If several zones require substantial heating at the same time, it increases its output within the available limits.\u003c\/p\u003e\n\u003cp\u003eThis is precisely the behavior that makes a multi-zone platform appealing.\u003c\/p\u003e\n\u003ch3\u003eA concrete example: four rooms that never have exactly the same needs\u003c\/h3\u003e\n\u003cp\u003eLet’s take a typical \u003cstrong\u003eSouth Shore\u003c\/strong\u003e home with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea primary bedroom on the second floor;\u003c\/li\u003e\n\u003cli\u003etwo secondary bedrooms;\u003c\/li\u003e\n\u003cli\u003ean office on the ground floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe west-facing bedroom can become very hot around 4 p.m. in July, while the north-facing office remains relatively cool.\u003c\/p\u003e\n\u003cp\u003eIn the evening, the situation changes: the office is no longer in use, but the three bedrooms need to be comfortable for the night.\u003c\/p\u003e\n\u003cp\u003eA four-zone system concentrates capacity where it is actually needed rather than sending exactly the same amount of air everywhere.\u003c\/p\u003e\n\u003ch3\u003eWhy four zones can be more effective than one very large head\u003c\/h3\u003e\n\u003cp\u003eA common mistake is to believe that a high-capacity wall-mounted unit installed in a hallway can serve an entire floor.\u003c\/p\u003e\n\u003cp\u003eOn paper, the BTUs may seem sufficient.\u003c\/p\u003e\n\u003cp\u003eIn reality, doors and walls limit air circulation.\u003c\/p\u003e\n\u003cp\u003eA 24,000- or 36,000-BTU head can cool the hallway perfectly while leaving a closed bedroom too warm.\u003c\/p\u003e\n\u003cp\u003eWith four indoor units, the system directly serves the rooms.\u003c\/p\u003e\n\u003cp\u003eThis improves:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edistribution;\u003c\/li\u003e\n\u003cli\u003etemperature precision;\u003c\/li\u003e\n\u003cli\u003enighttime comfort;\u003c\/li\u003e\n\u003cli\u003eflexibility of use;\u003c\/li\u003e\n\u003cli\u003eroom-by-room control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSEER2 of 23: highly attractive seasonal efficiency for a multi-zone system\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor a 36,000 BTU multizone heat pump, this efficiency level is particularly noteworthy.\u003c\/p\u003e\n\u003cp\u003eENERGY STAR certification is also indicated in the Senville presentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA high SEER2 means that, over the entire cooling season, the unit can provide substantial cooling relative to the electrical energy consumed.\u003c\/p\u003e\n\u003cp\u003eHowever, this figure should not be turned into a promise about the electricity bill.\u003c\/p\u003e\n\u003cp\u003eActual consumption depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003ewindow orientation;\u003c\/li\u003e\n\u003cli\u003ethe requested temperature;\u003c\/li\u003e\n\u003cli\u003ethe number of active zones;\u003c\/li\u003e\n\u003cli\u003eoccupancy habits;\u003c\/li\u003e\n\u003cli\u003eoutdoor conditions;\u003c\/li\u003e\n\u003cli\u003ethe quality of the installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHSPF2 of 10.7 and operation down to -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA belongs to the \u003cstrong\u003eCold Climate\u003c\/strong\u003e system category.\u003c\/p\u003e\n\u003cp\u003eThe brochure states that it provides heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e and describes this series as optimized for cold climates. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specifications provide particularly interesting data at winter temperatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e38,000 BTU\/h at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e36,000 BTU\/h at -15 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eup to \u003cstrong\u003e22,400 BTU\/h at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe stated COP is approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.12 at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e1.47 at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information is more useful than simply stating “operates down to -30 °C.”\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the system continues to heat, but its available capacity is lower than when the outdoor temperature is higher.\u003c\/p\u003e\n\u003ch3\u003eWhy multizone heating must be calculated room by room\u003c\/h3\u003e\n\u003cp\u003eWith a four-zone system, we do not want to know only whether the outdoor unit can produce 22,400 BTU at -30 °C.\u003c\/p\u003e\n\u003cp\u003eWe need to determine how these BTUs will be distributed.\u003c\/p\u003e\n\u003cp\u003eIf all four rooms require substantial heating at the same time, the total available capacity must be shared.\u003c\/p\u003e\n\u003cp\u003eFor an older home in \u003cstrong\u003eMontreal\u003c\/strong\u003e, with less efficient windows and colder walls, this simultaneity can become important during severe cold.\u003c\/p\u003e\n\u003cp\u003eThat is why we assess the heat loss of each zone before recommending the indoor-unit combination.\u003c\/p\u003e\n\u003ch3\u003eThe major advantage of a four-zone system: individual room control\u003c\/h3\u003e\n\u003cp\u003eIn a family home, not all rooms should necessarily operate at the same temperature.\u003c\/p\u003e\n\u003cp\u003eA child's bedroom can be set differently from the office. A guest room can remain at a more economical setpoint when unused. A sun-exposed space may require more cooling than the others.\u003c\/p\u003e\n\u003cp\u003eWith a \u003cstrong\u003efour-zone SENVILLE heat pump\u003c\/strong\u003e, each indoor unit has its own control.\u003c\/p\u003e\n\u003cp\u003eWi-Fi is included according to the AirGreen specifications, while the documentation describes integration with Alexa and the Senville app for scheduling and remote control. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis function becomes truly useful when several rooms need to be managed separately.\u003c\/p\u003e\n\u003ch3\u003eAn important limitation: the zones share the same general mode\u003c\/h3\u003e\n\u003cp\u003eA conventional residential multi-zone system shares the same outdoor unit.\u003c\/p\u003e\n\u003cp\u003eTherefore, one should not expect one bedroom to be in cooling mode while another simultaneously requests heating.\u003c\/p\u003e\n\u003cp\u003eThe zones may have different temperatures, but they must operate in a compatible mode.\u003c\/p\u003e\n\u003cp\u003eThis reality is important during the shoulder seasons, particularly in spring or fall, when a sunny room may overheat while another remains cool.\u003c\/p\u003e\n\u003ch3\u003eAutomatic louvers and air distribution in each room\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eautomatic vertical\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eautomatic horizontal\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis function improves the distribution of the air stream, but the location of each head remains critical.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we aim in particular to avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea direct stream of air onto a bed;\u003c\/li\u003e\n\u003cli\u003eair blowing directly onto a desk;\u003c\/li\u003e\n\u003cli\u003ea head installed too close to a ceiling;\u003c\/li\u003e\n\u003cli\u003ea position that blocks the air coverage;\u003c\/li\u003e\n\u003cli\u003ean installation that makes maintenance more difficult.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, the best position is not always the easiest one for the piping. We therefore need to find a compromise between performance, aesthetics, and route simplicity.\u003c\/p\u003e\n\u003ch2\u003eA four-zone installation is won mainly through planning the lines, drains, and outdoor unit.\u003c\/h2\u003e\n\u003ch3\u003eA precharge of up to 125 feet\u003c\/h3\u003e\n\u003cp\u003eThe documentation indicates that the SENA-36HF-MOA contains approximately \u003cstrong\u003e134.04 oz of R-454B\u003c\/strong\u003e and is precharged for a total length of up to \u003cstrong\u003e125 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a four-zone project, this information is important.\u003c\/p\u003e\n\u003cp\u003eFour heads can quickly generate a significant total piping length.\u003c\/p\u003e\n\u003cp\u003eSuppose:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 feet for the first zone;\u003c\/li\u003e\n\u003cli\u003e25 feet for the second;\u003c\/li\u003e\n\u003cli\u003e35 feet for the third;\u003c\/li\u003e\n\u003cli\u003e30 feet for the fourth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe total already reaches 110 feet.\u003c\/p\u003e\n\u003cp\u003eThat is why we calculate the lengths before installation rather than afterward.\u003c\/p\u003e\n\u003ch3\u003eR-454B: a new standard that requires proper installation\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis A2L refrigerant requires appropriate practices during HVAC commissioning and servicing.\u003c\/p\u003e\n\u003cp\u003eA professional installation includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eproper line preparation;\u003c\/li\u003e\n\u003cli\u003ecompliant connections;\u003c\/li\u003e\n\u003cli\u003eleak tests;\u003c\/li\u003e\n\u003cli\u003evacuuming;\u003c\/li\u003e\n\u003cli\u003ecorrect charge;\u003c\/li\u003e\n\u003cli\u003efinal operation check.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a four-zone system, the number of connections is greater than in a single-zone system, making the quality of the refrigeration work even more important.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in – 1\/2 in piping\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates connection sizes of \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe route must be planned to avoid an accumulation of visible line-hide on the façades.\u003c\/p\u003e\n\u003cp\u003eIn an installation in Montréal or Longueuil, we can sometimes group several runs along the same vertical line and then distribute them to the different rooms.\u003c\/p\u003e\n\u003cp\u003eThis method often improves the exterior appearance.\u003c\/p\u003e\n\u003ch3\u003eFour heads also mean four drains\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit produces condensate in cooling mode.\u003c\/p\u003e\n\u003cp\u003eA four-zone system may therefore require up to four separate drainage runs.\u003c\/p\u003e\n\u003cp\u003eIt is a detail that quickly becomes critical.\u003c\/p\u003e\n\u003cp\u003eWe try to prioritize gravity drains when the configuration allows.\u003c\/p\u003e\n\u003cp\u003ePoor planning may require several condensate pumps, which adds:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003enoise;\u003c\/li\u003e\n\u003cli\u003emechanical parts;\u003c\/li\u003e\n\u003cli\u003emaintenance;\u003c\/li\u003e\n\u003cli\u003erisk of blockages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a bedroom, a pump that starts regularly during the night can be much more disruptive than expected.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing more than 200 lb\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies for the outdoor unit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edimensions: \u003cstrong\u003e38.58 × 16.34 × 38.39 in\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eweight: approximately \u003cstrong\u003e211.86 lb\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emaximum outdoor airflow: \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level: \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis is therefore not a small outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIts base or support must be suitable for its weight and Québec's winter conditions.\u003c\/p\u003e\n\u003cp\u003eWe also check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eclearances;\u003c\/li\u003e\n\u003cli\u003esnow accumulation;\u003c\/li\u003e\n\u003cli\u003edefrost water;\u003c\/li\u003e\n\u003cli\u003edistance from windows;\u003c\/li\u003e\n\u003cli\u003eproximity to the neighbor;\u003c\/li\u003e\n\u003cli\u003eaccessibility for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e65 dB(A): location matters\u003c\/h3\u003e\n\u003cp\u003eAn outdoor sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e deserves particular attention.\u003c\/p\u003e\n\u003cp\u003eOn a property with a large lot, the impact may be limited.\u003c\/p\u003e\n\u003cp\u003eIn a densely populated Montréal neighborhood or in certain areas of \u003cstrong\u003eLongueuil\u003c\/strong\u003e, the distance from windows, patios, and neighbors is often much smaller.\u003c\/p\u003e\n\u003cp\u003eWe therefore try to avoid installing it directly beneath a bedroom window or too close to a patio used in the evening.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and MOP 40 A\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emaximum protection: 40 A\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003epower supply: \u003cstrong\u003e208\/230 V single-phase\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe electrical circuit must be sized according to the nameplate data and applicable requirements.\u003c\/p\u003e\n\u003cp\u003eIn a home already heavily loaded by baseboard heaters, a water heater, a stove, and an electric vehicle charging station, we check the available capacity before confirming the work.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eThe documentation also presents \u003cstrong\u003ebuilt-in diagnostic and refrigerant leak detection functions\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a four-zone system, this function is useful because the refrigeration network has more fittings and components.\u003c\/p\u003e\n\u003cp\u003eHowever, it does not replace a diagnosis by a refrigeration technician.\u003c\/p\u003e\n\u003cp\u003eA drop in performance in a single zone may be related to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea sensor;\u003c\/li\u003e\n\u003cli\u003ea fan motor;\u003c\/li\u003e\n\u003cli\u003ean electronic problem;\u003c\/li\u003e\n\u003cli\u003ea refrigerant charge;\u003c\/li\u003e\n\u003cli\u003ea fitting;\u003c\/li\u003e\n\u003cli\u003ea drain;\u003c\/li\u003e\n\u003cli\u003ea communication error.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe 1,800 sq. ft. area shown in the brochure must be interpreted correctly\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates that the SENA-36HF\/D configuration can cover up to approximately \u003cstrong\u003e1,800 sq. ft.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis information should not be interpreted as an automatic rule.\u003c\/p\u003e\n\u003cp\u003eA well-insulated 1,800 sq. ft. newer home may have a very different heating load from an old duplex of the same size.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we consider in particular:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einsulation;\u003c\/li\u003e\n\u003cli\u003enumber of windows;\u003c\/li\u003e\n\u003cli\u003esolar orientation;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003ewall exposure;\u003c\/li\u003e\n\u003cli\u003econstruction type;\u003c\/li\u003e\n\u003cli\u003enumber of floors;\u003c\/li\u003e\n\u003cli\u003edesired temperature;\u003c\/li\u003e\n\u003cli\u003eoccupancy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRealistic example of a four-zone project\u003c\/h3\u003e\n\u003cp\u003eA common scenario would be a two-story home where the owners want:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eone unit in the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone unit in a second bedroom;\u003c\/li\u003e\n\u003cli\u003eone unit in the office;\u003c\/li\u003e\n\u003cli\u003eone unit in the large living-dining area.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIn this case, the living room head may require more capacity than those in the bedrooms.\u003c\/p\u003e\n\u003cp\u003eWe would therefore not necessarily choose four identical units.\u003c\/p\u003e\n\u003cp\u003eThe combination can be adapted to the actual needs of each space, subject to compatibility with the SENA-36HF-MOA.\u003c\/p\u003e\n\u003ch3\u003eProvincial rebate shown: $4,560\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet currently shows a \u003cstrong\u003e$4,560 provincial rebate\u003c\/strong\u003e for this combination.\u003c\/p\u003e\n\u003cp\u003eIt also states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate\u003c\/strong\u003e certification;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR number \u003cstrong\u003e3630064\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSenville documentation confirms the series’ ENERGY STAR certification and cold-climate positioning. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs always, financial assistance must be verified at the time of the project using the exact combination of indoor and outdoor units.\u003c\/p\u003e\n\u003cp\u003eIn a multi-zone system, this detail is particularly important.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference to be confirmed\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labour\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eHowever, the Senville brochure indicates \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table on page 5 also confirms \u003cstrong\u003e10 years compressor \/ 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis difference must therefore be confirmed according to the warranty program applicable to the product sold by AirGreen.\u003c\/p\u003e\n\u003ch3\u003eFour single-zone systems or a four-zone system?\u003c\/h3\u003e\n\u003cp\u003eThis is a comparison we often make.\u003c\/p\u003e\n\u003cp\u003eFour single-zone systems provide four independent outdoor units.\u003c\/p\u003e\n\u003cp\u003eA multi-zone system uses a single outdoor unit.\u003c\/p\u003e\n\u003ch4\u003eAdvantages of the four-zone system\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003efewer outdoor units;\u003c\/li\u003e\n\u003cli\u003ebetter aesthetics;\u003c\/li\u003e\n\u003cli\u003eless space occupied;\u003c\/li\u003e\n\u003cli\u003eonly one outdoor unit to maintain;\u003c\/li\u003e\n\u003cli\u003eindependent control of the four rooms;\u003c\/li\u003e\n\u003cli\u003ea particularly interesting solution for façades where space is limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAdvantages of separate single-zone systems\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eeach system is completely independent;\u003c\/li\u003e\n\u003cli\u003ean outdoor-unit failure affects only one zone;\u003c\/li\u003e\n\u003cli\u003esome small single-zone units can offer excellent individual performance;\u003c\/li\u003e\n\u003cli\u003eeach zone has its own dedicated outdoor capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe best choice depends on the building and the owner's priorities.\u003c\/p\u003e\n\u003ch3\u003eThe most common mistake: overloading the indoor capacity because the outdoor unit accepts five zones\u003c\/h3\u003e\n\u003cp\u003eThe fact that the SENA-36HF-MOA can accept \u003cstrong\u003eup to five zones\u003c\/strong\u003e does not mean that any combination of heads can be installed.\u003c\/p\u003e\n\u003cp\u003eThe matching rules must be followed.\u003c\/p\u003e\n\u003cp\u003eFor a four-zone system, we therefore verify the total connected capacity and the manufacturer's limits before finalizing the order.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important for winter heating, when several rooms may require heat simultaneously.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a multi-zone installation\u003c\/h3\u003e\n\u003cp\u003eA four-zone heat pump requires more coordination than a simple wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we plan:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe heating needs of each room;\u003c\/li\u003e\n\u003cli\u003eindoor models;\u003c\/li\u003e\n\u003cli\u003etotal capacity;\u003c\/li\u003e\n\u003cli\u003elow-temperature capacity;\u003c\/li\u003e\n\u003cli\u003epiping lengths;\u003c\/li\u003e\n\u003cli\u003edrains;\u003c\/li\u003e\n\u003cli\u003eexterior aesthetics;\u003c\/li\u003e\n\u003cli\u003eoutdoor-unit support;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003ecommissioning;\u003c\/li\u003e\n\u003cli\u003eeligibility for subsidies;\u003c\/li\u003e\n\u003cli\u003efuture access for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe carry out these installations in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOur assessment of the SENVILLE SENA-36HF-MOA\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE 36,000 BTU platform offers a particularly interesting combination for a property requiring several independent zones:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 to 5 compatible zones\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eperfectly suited to a \u003cstrong\u003e4-zone\u003c\/strong\u003e configuration when properly matched;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU nominal cooling capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36,000 BTU nominal heating capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emodulation up to \u003cstrong\u003e43,000 BTU in cooling\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emodulation up to \u003cstrong\u003e44,000 BTU in heating\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEER2 23\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEER2 13\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSPF2-4 10.7\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoperation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eR-454B;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR;\u003c\/li\u003e\n\u003cli\u003eCold Climate;\u003c\/li\u003e\n\u003cli\u003eWiFi;\u003c\/li\u003e\n\u003cli\u003erefrigerant precharge up to \u003cstrong\u003e125 feet\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emaximum protection of \u003cstrong\u003e40 A\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a home divided into several rooms, it allows the zones to be treated directly rather than trying to force air from a single point.\u003c\/p\u003e\n\u003cp\u003eHowever, the result depends on the quality of the design. A good outdoor unit cannot compensate for improperly sized heads, poorly planned drains, or an incorrect indoor-unit combination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a quote on a SENVILLE 4-zone heat pump, contact AirGreen. We can size each room, verify the combination of indoor units, plan the piping, and confirm the financial incentives available before installation in Montreal, Laval, Longueuil, the North Shore, or the South Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"9 + 9 + 9 + 9","offer_id":56201207251236,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 9 + 12","offer_id":56201207284004,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 9 + 18","offer_id":56201207316772,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true},{"title":"9 + 9 + 12 + 12","offer_id":56201207349540,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057798"},{"product_id":"thermopompe-4-zones-senville-r454b-48000-btu","title":"SENVILLE R454B 4-Zone Heat Pump | 48000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eFour separately controlled spaces with a single condenser: a multi-zone solution designed for homes where air distribution matters just as much as BTUs\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE R454B 4-Zone Heat Pump | 48000 BTU\u003c\/strong\u003e addresses a very practical problem we encounter at AirGreen in homes, condos, multiplexes, and small commercial buildings in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e: how can several enclosed rooms be heated and cooled without installing four outdoor units around the building?\u003c\/p\u003e\n\u003cp\u003eWith a Quad-Zone configuration, a single outdoor condenser serves \u003cstrong\u003efour separately controllable indoor units\u003c\/strong\u003e. Senville officially markets its 48,000 BTU platform in a Quad-Zone version under the SENA\/48HF\/Q family. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe heart of the system is the \u003cstrong\u003eSENA-48HF-MOA\u003c\/strong\u003e outdoor unit, operating with \u003cstrong\u003eR454B\u003c\/strong\u003e. This platform is particularly flexible: the accompanying documentation indicates that it can support \u003cstrong\u003e2 to 6 zones\u003c\/strong\u003e, depending on the selected matching system. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the matched system we are discussing here, the reference to retain is \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e. The certified data associated with this number includes \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, \u003cstrong\u003e12 EER2\u003c\/strong\u003e, \u003cstrong\u003e11 HSPF2\u003c\/strong\u003e, a rated cooling capacity of \u003cstrong\u003e47,000 BTU\/h\u003c\/strong\u003e, and a rated heating capacity of \u003cstrong\u003e49,000 BTU\/h\u003c\/strong\u003e. The unit is also listed as a \u003cstrong\u003ecold-climate\u003c\/strong\u003e heat pump. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is therefore useful to immediately understand one distinction: \u003cstrong\u003e48,000 BTU is the system’s commercial class\u003c\/strong\u003e, while the certified capacity of the matched system may be slightly different. At AirGreen, we always rely on the exact AHRI number when comparing models or confirming a rebate.\u003c\/p\u003e\n\u003ch3\u003eThe main features of the SENVILLE 4-Zone 48,000 BTU system\u003c\/h3\u003e\n\u003cp\u003eFor this configuration, the key data includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-48HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConfiguration: 4 zones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735320\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommercial class: 48,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCertified cooling capacity: 47,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRated heating capacity: 49,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 11.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -8 °C: 45,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCapacity at -15 °C: 47,000 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum rated capacity at -30 °C: approximately 24,600 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP at -8 °C: approximately 2.6\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum COP at -30 °C: approximately 1.27\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum operating temperature in heating mode: -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR Cold Climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR ID: 3630067\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi: included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum protection: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: approximately 65 dB(A)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 4,503 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAirGreen warranty listed: 10-10-0, with additional protection available\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SENA-48HF-MOA brochure confirms \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, a 208\/230 V power supply, and a voltage range of 187 to 253 V. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA modulation range extending well beyond a simple 48,000 BTU figure\u003c\/h3\u003e\n\u003cp\u003eInverter technology is particularly important in a four-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eThe condenser documentation specifies an approximate cooling range of \u003cstrong\u003e12,000 to 57,000 BTU\/h\u003c\/strong\u003e and a heating range of \u003cstrong\u003e13,000 to 57,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis means the system is not destined to operate continuously at its maximum capacity.\u003c\/p\u003e\n\u003cp\u003eImagine a South Shore home equipped with four heads:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eone in the living room;\u003c\/li\u003e\n\u003cli\u003eone in the primary bedroom;\u003c\/li\u003e\n\u003cli\u003eone in an office;\u003c\/li\u003e\n\u003cli\u003eone in a second bedroom.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt 2 p.m. in summer, the south-facing living room may require substantial cooling, while the bedrooms are already cool. At 11 p.m., the situation may be reversed: the living room barely needs cooling, while the bedrooms are occupied.\u003c\/p\u003e\n\u003cp\u003eThe compressor can adjust its output to meet the overall demand.\u003c\/p\u003e\n\u003cp\u003eThis modulation allows the system to better manage a home whose different rooms never have exactly the same heating load at the same time.\u003c\/p\u003e\n\u003ch3\u003eFour zones do not mean four compressors\u003c\/h3\u003e\n\u003cp\u003eThis is probably the most important point to understand before purchasing a \u003cstrong\u003e4-Zone heat pump\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEach indoor unit can be controlled separately, but the four heads share:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe same compressor;\u003c\/li\u003e\n\u003cli\u003ethe same outdoor unit;\u003c\/li\u003e\n\u003cli\u003ea shared total capacity;\u003c\/li\u003e\n\u003cli\u003ethe same main operating mode for the refrigeration circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOccupants can therefore set different temperatures from one room to another, but they should not think of four completely independent heat pumps.\u003c\/p\u003e\n\u003cp\u003eIf all four zones require substantial heating at the same time, the condenser must distribute its available capacity among them.\u003c\/p\u003e\n\u003cp\u003eThat is why we size \u003cstrong\u003eeach room and the entire building\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA four-zone 12,000 BTU configuration is possible, but the exact pairing must be confirmed\u003c\/h3\u003e\n\u003cp\u003eSenville commercially offers the 48,000 BTU Quad-Zone version with configurations including \u003cstrong\u003efour 12,000 BTU units\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThat does not necessarily mean that a 12,000 BTU head is needed in every room.\u003c\/p\u003e\n\u003cp\u003eIn a real property, we may have very different needs:\u003c\/p\u003e\n\u003cp\u003eA compact bedroom may require much less capacity than a large living room with extensive glazing, while a sunny attic office may have a higher load than its area would suggest.\u003c\/p\u003e\n\u003cp\u003eThe possible combinations must therefore be validated according to the indoor units compatible with Senville and, above all, according to the \u003cstrong\u003eAHRI pairing\u003c\/strong\u003e that we want to retain.\u003c\/p\u003e\n\u003ch3\u003e23 SEER2 on a system of this capacity: notable efficiency\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003eSEER2 of 23\u003c\/strong\u003e is particularly appealing on a multizone platform capable of serving four rooms.\u003c\/p\u003e\n\u003cp\u003eThe ENERGY STAR database associated with \u003cstrong\u003eSENA-48HF-MOA \/ AHRI 215735320\u003c\/strong\u003e also confirms:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e23 SEER2;\u003c\/li\u003e\n\u003cli\u003e12 EER2;\u003c\/li\u003e\n\u003cli\u003e11 HSPF2;\u003c\/li\u003e\n\u003cli\u003econtinuously variable compressor;\u003c\/li\u003e\n\u003cli\u003eR454B;\u003c\/li\u003e\n\u003cli\u003ecold-climate certification. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis efficiency does not mean that every home will achieve the same annual savings.\u003c\/p\u003e\n\u003cp\u003eActual consumption depends on the quality of the building, the use of the four zones, the setpoint temperature, and the proportion of electric heating that the heat pump actually manages to replace.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore consider SEER2 a \u003cstrong\u003ecomparative indicator\u003c\/strong\u003e, not a promise about an electricity bill.\u003c\/p\u003e\n\u003ch3\u003e45,000 BTU at -8 °C: a much more useful figure than simply “heats down to -30”\u003c\/h3\u003e\n\u003cp\u003eFor a heat pump used in Quebec, we place great importance on the capacity available at low temperatures.\u003c\/p\u003e\n\u003cp\u003eThe listed pairing indicates approximately \u003cstrong\u003e45,000 BTU\/h of heating at -8 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe certification database also reports approximately \u003cstrong\u003e47,000 BTU\/h at -15 °C\u003c\/strong\u003e for this configuration, with a certified COP close to 2 at this operating point. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis capacity matters because -8 °C to -15 °C corresponds to a temperature range in which a heat pump in Quebec can accumulate a great many operating hours over the course of a winter.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner in \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e, the potential for savings is therefore not limited to the two or three coldest nights of January. It depends mainly on what the unit can produce throughout the season.\u003c\/p\u003e\n\u003ch3\u003eHeating down to -30 °C: what it really means\u003c\/h3\u003e\n\u003cp\u003eSenville advertises heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, a figure also listed in the SENA-48HF-MOA brochure. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt this temperature, however, it is necessary to distinguish between \u003cstrong\u003eoperating capacity\u003c\/strong\u003e and \u003cstrong\u003enominal capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAirGreen data associated with the model indicate a maximum capacity of approximately \u003cstrong\u003e24,600 BTU\/h at -30 °C\u003c\/strong\u003e, with a COP of approximately \u003cstrong\u003e1.27\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn other words, the heat pump continues to provide heat when the mercury reaches -30 °C, but it no longer provides the approximately 47,000 to 49,000 BTU available under less severe conditions.\u003c\/p\u003e\n\u003cp\u003eIn a large house requiring 45,000 BTU\/h of heating at -30 °C, a supplemental heat source will therefore remain necessary.\u003c\/p\u003e\n\u003cp\u003eIn a very well-insulated property with much lower heat losses, the heat pump's contribution can remain very significant.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.6 at -8 °C: why this figure deserves to be understood\u003c\/h3\u003e\n\u003cp\u003eA COP of \u003cstrong\u003e2,6\u003c\/strong\u003e means that under this operating condition, the system provides approximately 2.6 units of heat for one unit of electricity consumed by the heat pump.\u003c\/p\u003e\n\u003cp\u003eBy comparison, electric resistance heating operates essentially at a COP of 1.\u003c\/p\u003e\n\u003cp\u003eThe lower the outdoor temperature drops, the more a heat pump's COP generally tends to decrease.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, a value of approximately 1.27 means that the energy advantage over electric resistance becomes smaller, but theoretically remains present under the corresponding conditions.\u003c\/p\u003e\n\u003cp\u003eFor us, these figures are primarily used to determine \u003cstrong\u003ewhen to run the heat pump and when to plan for supplemental heat\u003c\/strong\u003e, rather than to assess the unit based on a single figure.\u003c\/p\u003e\n\u003ch3\u003eR454B and the new installation requirements\u003c\/h3\u003e\n\u003cp\u003eThis generation uses the \u003cstrong\u003eR454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe condenser brochure indicates a charge of approximately \u003cstrong\u003e151.68 oz\u003c\/strong\u003e and a precharge that may correspond to approximately \u003cstrong\u003e150 ft of piping\u003c\/strong\u003e for the published configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn a Quad-Zone system, this precharge capacity makes perfect sense: we can have four refrigerant lines running to four different parts of the building.\u003c\/p\u003e\n\u003cp\u003eHowever, “precharged for 150 ft” does not mean that four lines can be routed freely without taking the manufacturer's rules into account.\u003c\/p\u003e\n\u003cp\u003eWe must comply with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe maximum length of each branch;\u003c\/li\u003e\n\u003cli\u003ethe combined length;\u003c\/li\u003e\n\u003cli\u003ethe height differences;\u003c\/li\u003e\n\u003cli\u003ethe piping dimensions;\u003c\/li\u003e\n\u003cli\u003ethe additional charge required when the precharge limits are exceeded;\u003c\/li\u003e\n\u003cli\u003ethe permitted combinations of indoor units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe R454B is also an A2L-class refrigerant. Senville documentation highlights \u003cstrong\u003ediagnostic and leak detection\u003c\/strong\u003e features on this generation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis makes the quality of the connections, leak testing, and commissioning even more important.\u003c\/p\u003e\n\u003ch3\u003eA platform capable of supporting 2 to 6 zones: useful, but the correct matching must be maintained\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation explicitly states that the \u003cstrong\u003eSENA-48HF-MOA can support 2 to 6 zones\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt is a very flexible platform.\u003c\/p\u003e\n\u003cp\u003eSenville also markets the same condenser in different versions: Dual-Zone, Quad-Zone, and Five-Zone. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean that we can turn a Quad-Zone configuration into a Five-Zone or Six-Zone system without verifying the consequences.\u003c\/p\u003e\n\u003cp\u003eAdding an indoor unit can change:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003econnected capacity;\u003c\/li\u003e\n\u003cli\u003ecertified efficiency;\u003c\/li\u003e\n\u003cli\u003eAHRI;\u003c\/li\u003e\n\u003cli\u003ethe size of each indoor unit;\u003c\/li\u003e\n\u003cli\u003eeligibility for financial assistance;\u003c\/li\u003e\n\u003cli\u003ethe system's behavior when multiple zones demand capacity simultaneously.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the customer, the outdoor unit number is therefore only part of the information. \u003cstrong\u003eThe complete matching is the real HVAC product.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eA Quad-Zone installation requires four times as much interior planning, not simply four times as many pipes\u003c\/h2\u003e\n\u003ch3\u003eAn AirGreen project in Verdun that perfectly illustrates the challenge\u003c\/h3\u003e\n\u003cp\u003eWe recently completed a \u003cstrong\u003eQuad-Zone installation in Verdun, Montreal\u003c\/strong\u003e at AirGreen, with four wall-mounted units connected to a single condenser.\u003c\/p\u003e\n\u003cp\u003eThe work took place in a unit undergoing renovations, where we had to work around tight spaces, windows close to the installation areas, and the need to keep the line route clean and discreet. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is precisely the type of building where a four-zone solution is worthwhile.\u003c\/p\u003e\n\u003cp\u003eA single large unit in a hallway could have provided plenty of BTUs without actually treating four enclosed rooms properly.\u003c\/p\u003e\n\u003cp\u003eWith four indoor units, each space receives its heating and cooling directly.\u003c\/p\u003e\n\u003ch3\u003eIn Ville-Marie and Old Montreal, the number of zones is not the only challenge\u003c\/h3\u003e\n\u003cp\u003eOur Quad-Zone installations in \u003cstrong\u003eVille-Marie\u003c\/strong\u003e and the \u003cstrong\u003eOld Port of Montreal\u003c\/strong\u003e have also exposed us to the typical realities of urban buildings: uneven walls, limited space, architectural constraints, and the need to conceal the lines without compromising access to the equipment. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a newer home on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, we can sometimes run each line almost directly outside.\u003c\/p\u003e\n\u003cp\u003eIn a Montreal condo, the first indoor unit may be only a few feet from the condenser, while the fourth requires a completely different route.\u003c\/p\u003e\n\u003cp\u003eThat is why two projects using exactly the same Senville heat pump may require very different amounts of work.\u003c\/p\u003e\n\u003ch3\u003eThe four drains deserve as much attention as the four refrigerant lines\u003c\/h3\u003e\n\u003cp\u003eEach indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eThis potentially means \u003cstrong\u003efour drains to manage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWe prefer to use gravity when the building configuration allows it. When this is not possible, a condensate pump may become necessary.\u003c\/p\u003e\n\u003cp\u003eAn incorrect slope on a single drain can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewater noises;\u003c\/li\u003e\n\u003cli\u003ea leak;\u003c\/li\u003e\n\u003cli\u003ewater accumulating in the drain pan;\u003c\/li\u003e\n\u003cli\u003ewater infiltration into the wall;\u003c\/li\u003e\n\u003cli\u003ean avoidable service call.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a four-zone project, repeating the components also multiplies the possibilities for error.\u003c\/p\u003e\n\u003ch3\u003eThe piping must match the installed head\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen specification sheet indicates \u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e in the general data associated with the configuration, but with a multi-zone heat pump it is essential to verify the required sizes \u003cstrong\u003efor each indoor unit actually selected\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA 9,000- or 12,000-BTU head does not necessarily have the same connections as a 24,000-BTU unit.\u003c\/p\u003e\n\u003cp\u003eTherefore, we never select the piping solely based on the condenser’s total capacity.\u003c\/p\u003e\n\u003cp\u003eThe final pairing manual remains the reference.\u003c\/p\u003e\n\u003ch3\u003eA condenser weighing nearly 250 lb: the support must be taken seriously\u003c\/h3\u003e\n\u003cp\u003eThe brochure specifies the following for the SENA-48HF-MOA:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e37.48 × 16.34 × 52.48 in\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eweight of approximately \u003cstrong\u003e246.47 lb\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eoutdoor sound level of approximately \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is not a small outdoor wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eIn Greater Montreal, we must anticipate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esnow;\u003c\/li\u003e\n\u003cli\u003eice;\u003c\/li\u003e\n\u003cli\u003edefrosting;\u003c\/li\u003e\n\u003cli\u003eweight;\u003c\/li\u003e\n\u003cli\u003evibrations;\u003c\/li\u003e\n\u003cli\u003esupport stability;\u003c\/li\u003e\n\u003cli\u003efuture access to the service panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the condenser is placed directly beneath a roof downspout, ice-related problems can become significant.\u003c\/p\u003e\n\u003cp\u003eIf it is installed too low, snow may reduce airflow.\u003c\/p\u003e\n\u003cp\u003eIf it is mounted on a lightweight structure, vibrations may be transmitted to the building.\u003c\/p\u003e\n\u003ch3\u003e65 dB(A): the outdoor location must also respect the neighbors\u003c\/h3\u003e\n\u003cp\u003eAn outdoor sound level of \u003cstrong\u003e65 dB(A)\u003c\/strong\u003e warrants serious consideration, particularly in densely populated areas of Montreal.\u003c\/p\u003e\n\u003cp\u003eInstalling the unit directly beneath the homeowner’s bedroom window or near the neighbor’s is not our first choice when a realistic alternative exists.\u003c\/p\u003e\n\u003cp\u003eWe also consider how sound can be reflected between two closely spaced walls.\u003c\/p\u003e\n\u003cp\u003eOn the \u003cstrong\u003eNorth Shore or South Shore\u003c\/strong\u003e, a larger property sometimes provides more flexibility. In a Montreal plex, every available foot can matter.\u003c\/p\u003e\n\u003ch3\u003e37 A MCA, 40 A maximum protection\u003c\/h3\u003e\n\u003cp\u003eThe brochure confirms a \u003cstrong\u003eminimum circuit ampacity of 37 A\u003c\/strong\u003e and a maximum protection of \u003cstrong\u003e40 A\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe system operates at \u003cstrong\u003e208\/230 V single-phase\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBefore installation, we therefore check the panel’s capacity, the available space, and the electrical routing.\u003c\/p\u003e\n\u003cp\u003eThis check must be carried out before the installation date, particularly in older plexes in \u003cstrong\u003eMontreal and Longueuil\u003c\/strong\u003e, where an electrical panel may already be heavily loaded.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi and four-zone management\u003c\/h3\u003e\n\u003cp\u003eThe system offers Wi-Fi control, and Senville markets its Quad-Zone range as a solution that allows individual control of different rooms. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor four zones, this becomes genuinely practical.\u003c\/p\u003e\n\u003cp\u003eThe owner can, for example, maintain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe living room at a more comfortable temperature during the evening;\u003c\/li\u003e\n\u003cli\u003ethe office slightly cooler when it is unoccupied;\u003c\/li\u003e\n\u003cli\u003ethe bedrooms at a different temperature during the night;\u003c\/li\u003e\n\u003cli\u003ea guest room with a lower setpoint when it is not in use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA multi-zone installation is therefore not simply a way to distribute BTUs. It also makes it possible to adapt comfort to the building’s actual use.\u003c\/p\u003e\n\u003ch3\u003eLogisVert: why the displayed amount is $5,400\u003c\/h3\u003e\n\u003cp\u003eThe capacity used in the AirGreen specifications is \u003cstrong\u003e45,000 BTU\/h at -8°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eHydro-Québec’s LogisVert program currently offers \u003cstrong\u003e$120 per 1,000 BTU\/h at -8°C\u003c\/strong\u003e for an eligible heat pump, subject to the applicable conditions being met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculation is therefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e45 × $120 = $5,400\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is exactly the amount of \u003cstrong\u003e5 400 $\u003c\/strong\u003e displayed for this heat pump.\u003c\/p\u003e\n\u003cp\u003eThe AHRI number \u003cstrong\u003e215735320\u003c\/strong\u003e is associated with an ENERGY STAR cold-climate heat pump, with a certified capacity of 45,000 BTU\/h at around -8°C. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, you must always check the program \u003cstrong\u003eon the installation date\u003c\/strong\u003e. Hydro-Québec specifies that eligible models and amounts may change. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA multi-unit residential building incentive can be even more substantial\u003c\/h3\u003e\n\u003cp\u003eFor certain \u003cstrong\u003eeligible multi-unit residential buildings\u003c\/strong\u003e, Hydro-Québec has offered, since June 15, 2026, an incentive increase bringing the rebate to \u003cstrong\u003e$220 per 1,000 BTU\/h at -8°C\u003c\/strong\u003e when all program requirements are met. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWith 45,000 BTU\/h at -8°C, the theoretical calculation is:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e45 × 220 $ = 9,900 $\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis amount is by no means automatic. The incentive is intended for multi-unit residential buildings meeting specific criteria and applies to ENERGY STAR – Cold Climate wall-mounted heat pumps installed in eligible dwelling units.\u003c\/p\u003e\n\u003cp\u003eFor this type of project, we verify the address, building type, and exact configuration before presenting an amount as applicable.\u003c\/p\u003e\n\u003ch3\u003eWarranty: there is a difference between the manufacturer’s brochure and the coverage displayed by AirGreen\u003c\/h3\u003e\n\u003cp\u003eThe attached brochure mentions a manufacturer’s warranty of \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specification sheet associated with the configuration, for its part, presents \u003cstrong\u003e10-10-0\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eWe therefore have the \u003cstrong\u003efinal quote\u003c\/strong\u003e specify the coverage that actually applies to the project: the manufacturer program, registration requirements, and any additional protection offered.\u003c\/p\u003e\n\u003cp\u003eThe document provided to the customer is what should be relied upon, not an old brochure or a website specification consulted for another SENA-48HF-MOA combination.\u003c\/p\u003e\n\u003ch3\u003eThe mistakes we seek to avoid on a four-zone system\u003c\/h3\u003e\n\u003ch4\u003eInstalling four heads with the same capacity without calculating the requirements of all four rooms\u003c\/h4\u003e\n\u003cp\u003eA 150-square-foot bedroom and a 700-square-foot living room should not automatically receive the same capacity simply to simplify ordering.\u003c\/p\u003e\n\u003ch4\u003eInstalling a head in a hallway to serve two bedrooms\u003c\/h4\u003e\n\u003cp\u003eA heat pump heats and cools a space much more effectively when it blows directly into that space.\u003c\/p\u003e\n\u003ch4\u003eChoosing locations solely to reduce pipe length\u003c\/h4\u003e\n\u003cp\u003eA shorter refrigerant line is of little value if the unit blows air in the wrong direction all year round.\u003c\/p\u003e\n\u003ch4\u003eFailing to plan for future maintenance\u003c\/h4\u003e\n\u003cp\u003eWith four indoor units, we want to maintain access to the filters, drain, evaporator, and components.\u003c\/p\u003e\n\u003ch4\u003eForgetting that the four zones share a common capacity\u003c\/h4\u003e\n\u003cp\u003eIf all four rooms have a very high simultaneous load, condenser sizing becomes critical.\u003c\/p\u003e\n\u003ch4\u003eConfusing the Dual-Zone and Quad-Zone specifications\u003c\/h4\u003e\n\u003cp\u003eThe attached brochure shows a \u003cstrong\u003eDual-Zone 24,000 + 24,000 BTU\u003c\/strong\u003e version, but the SENA-48HF-MOA is also officially used in a Quad-Zone configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe exact AHRI number tells us which performance specifications we need to use.\u003c\/p\u003e\n\u003ch3\u003eFor what type of property is this SENVILLE Quad-Zone most relevant?\u003c\/h3\u003e\n\u003cp\u003eWe mainly consider it for buildings that have \u003cstrong\u003efour zones genuinely requiring their own air distribution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003efour bedrooms;\u003c\/li\u003e\n\u003cli\u003ethree bedrooms and a living room;\u003c\/li\u003e\n\u003cli\u003etwo bedrooms, an office, and a living area;\u003c\/li\u003e\n\u003cli\u003etwo levels with several enclosed rooms;\u003c\/li\u003e\n\u003cli\u003ea large condo;\u003c\/li\u003e\n\u003cli\u003ea multiplex;\u003c\/li\u003e\n\u003cli\u003ea small business with several offices;\u003c\/li\u003e\n\u003cli\u003ea property where the number of outdoor units must be limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a very large, entirely open area, four heads would often be unnecessary.\u003c\/p\u003e\n\u003cp\u003eIn a residence with six or seven small enclosed rooms, we might instead consider another configuration.\u003c\/p\u003e\n\u003cp\u003eThe number of zones should follow the building’s layout, not just the desired total capacity.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a SENVILLE 4-Zone installation?\u003c\/h3\u003e\n\u003cp\u003eA four-zone installation requires much more coordination than a single-split system.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we must plan simultaneously:\u003c\/p\u003e\n\u003cp\u003ethe four indoor locations, the four drains, the refrigerant line routes, the outdoor line sets, the wiring, the outdoor unit, the electrical circuit, and the complete commissioning.\u003c\/p\u003e\n\u003cp\u003eOur experience with Quad-Zone installations in \u003cstrong\u003eVerdun, Ville-Marie, Rosemont–La Petite-Patrie, Montreal East, Plateau-Mont-Royal, and Pointe-Claire\u003c\/strong\u003e has allowed us to work in very different environments, from narrow urban apartments to homes where the four zones are located on multiple façades. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is precisely the type of project where preparation makes the difference.\u003c\/p\u003e\n\u003cp\u003eA Quad-Zone heat pump must do more than simply work on the day it is commissioned. It must remain easy to clean, accessible for repairs, visually unobtrusive, and capable of distributing the right amount of air to each of the four zones for many years.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for the SENVILLE 4-Zone 48,000 BTU\u003c\/h3\u003e\n\u003cp\u003eFor a \u003cstrong\u003eSENVILLE R454B 4-Zone Heat Pump | 48000 BTU\u003c\/strong\u003e in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, or the North Shore\u003c\/strong\u003e, contact AirGreen.\u003c\/p\u003e\n\u003cp\u003eWe can determine the required capacity in each of the four rooms, confirm compatible indoor units, validate AHRI match \u003cstrong\u003eAHRI 215735320\u003c\/strong\u003e, plan the refrigerant lines and drains, check the electrical panel, and confirm eligibility for the \u003cstrong\u003e$5,400 LogisVert grant\u003c\/strong\u003e according to the conditions in effect at the time of installation.\u003c\/p\u003e\n\u003cp\u003eOn a Quad-Zone system, the best result doesn’t come from using the highest possible BTU capacity. It comes from properly distributing the capacity among four spaces, each with its own needs.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"12 + 12 + 12 + 12","offer_id":56201207677220,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_48000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057863"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/collections\/00_THERMOPOMPE_4_ZONES_SENVILLE_R454B_27000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD_aa289313-245b-43cc-b43e-2719d63b0fc6.png?v=1789059290","url":"https:\/\/airgreen.ca\/en\/collections\/thermopompe-4-zones-senville-montreal-laval-rive-sud-nord.oembed","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}