{"product_id":"thermopompe-2-zones-senville-r454b-36000-btu","title":"SENVILLE R454B 2-Zone Heat Pump | 36000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eTwo zones, a single outdoor compressor, and capacity designed for a true Québec winter\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e36,000 BTU 2-zone heat pump\u003c\/strong\u003e meets a very different need from a single-zone wall-mounted heat pump. It can heat and cool two distinct areas of a property from a single outdoor unit, while giving each zone its own indoor unit and temperature control.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-36HF-MOA R454B\u003c\/strong\u003e is particularly interesting in this category because it combines a nominal capacity of \u003cstrong\u003e36,000 BTU\u003c\/strong\u003e, an efficiency rating of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification, heating operation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, included Wi-Fi, and a multi-zone architecture that can be configured according to the building's needs. Senville documentation presents the SENA-36HF\/D system as a 36,000 BTU ductless heat pump designed for multi-zone applications and ENERGY STAR certified. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the \u003cstrong\u003e2-zone\u003c\/strong\u003e configuration, the manufacturer's page illustrates, among other options, an \u003cstrong\u003e18,000 BTU + 18,000 BTU\u003c\/strong\u003e pairing, with two indoor units powered by a single outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, this type of system is particularly relevant in Greater Montréal when a homeowner wants to replace two old air conditioners, heat two floors without installing ductwork, or better control two large zones with different heating and cooling loads.\u003c\/p\u003e\n\u003cp\u003eThe configuration shown includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-36HF-MOA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNominal cooling capacity: 36,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735317\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR reference: 3630064\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 23.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 13.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 4: 10.7\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 208\/230 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 40 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor sound level: 65 dB\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum outdoor airflow: approximately 3,038 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpecified piping: 1\/4 in – 1\/2 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAdditional warranty available\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicated provincial financial assistance: up to $4,560\u003c\/strong\u003e, subject to applicable eligibility conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy the 2-zone format may make more sense than two independent heat pumps\u003c\/h3\u003e\n\u003cp\u003eIn many properties in \u003cstrong\u003eMontréal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/strong\u003e, installing two independent outdoor units is not always desirable.\u003c\/p\u003e\n\u003cp\u003eOutdoor space may be limited. A condominium association may impose certain restrictions. A side façade may already contain an electrical meter, a gas line, a basement window, or a narrow passage.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003emulti-zone heat pump\u003c\/strong\u003e can then connect two indoor units to a single outdoor unit.\u003c\/p\u003e\n\u003cp\u003eThis notably simplifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe use of the outdoor space;\u003c\/li\u003e\n\u003cli\u003ethe appearance of the installation;\u003c\/li\u003e\n\u003cli\u003ethe number of visible mechanical units;\u003c\/li\u003e\n\u003cli\u003ecertain portions of the electrical connection;\u003c\/li\u003e\n\u003cli\u003emanaging two separate spaces with a single outdoor platform.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHowever, it is important to understand that a multi-zone system is not simply “two heat pumps combined in one box.” The two indoor units share the available capacity of the same outdoor compressor.\u003c\/p\u003e\n\u003cp\u003eThis is precisely where sizing becomes important.\u003c\/p\u003e\n\u003ch3\u003e36,000 BTU outdoors does not necessarily mean a constant 18,000 BTU in each room\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates a \u003cstrong\u003enominal heating capacity of 36,000 BTU\/h\u003c\/strong\u003e, with a modulating range from \u003cstrong\u003e10,000 to 44,000 BTU\/h\u003c\/strong\u003e. In cooling mode, the stated range extends from \u003cstrong\u003e9,000 to 43,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is one of the important features of an inverter system.\u003c\/p\u003e\n\u003cp\u003eConsider a configuration with two 18,000 BTU indoor units. This does not mean that each one constantly receives exactly 18,000 BTU.\u003c\/p\u003e\n\u003cp\u003eIf a single zone requires a great deal of heating while the second is already close to its setpoint, the compressor can adjust its output. Conversely, when both zones simultaneously require substantial capacity, the outdoor unit must distribute what it can produce between the two indoor units.\u003c\/p\u003e\n\u003cp\u003eThis distinction is essential for a successful installation.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore seek to understand not only the total area, but also \u003cstrong\u003ethe load of each zone\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA very common layout: open ground floor and upper floor with bedrooms\u003c\/h3\u003e\n\u003cp\u003eIn a \u003cstrong\u003eSouth Shore\u003c\/strong\u003e home, for example, the ground floor may include the living room, dining room, and kitchen in one large open area, while the upper floor contains several bedrooms accessible from a hallway.\u003c\/p\u003e\n\u003cp\u003eInstalling an identical indoor unit on each floor may seem simple, but the needs may differ.\u003c\/p\u003e\n\u003cp\u003eThe ground floor may experience greater solar gains in the afternoon. The upper floor may accumulate heat in the summer. An open stairwell can allow warm air to rise and alter the balance between the two zones.\u003c\/p\u003e\n\u003cp\u003eWe must then take into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe location of each indoor unit;\u003c\/li\u003e\n\u003cli\u003enatural air circulation;\u003c\/li\u003e\n\u003cli\u003edoor layout;\u003c\/li\u003e\n\u003cli\u003esun exposure;\u003c\/li\u003e\n\u003cli\u003eattic insulation;\u003c\/li\u003e\n\u003cli\u003ethe area actually open to the unit;\u003c\/li\u003e\n\u003cli\u003ethe heat loss from each floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is often this design work that determines whether a \u003cstrong\u003e2-zone heat pump\u003c\/strong\u003e will be comfortable in every room.\u003c\/p\u003e\n\u003ch3\u003eA 23 SEER2 rating that puts summer efficiency first\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation confirms a rating of \u003cstrong\u003e23 SEER2\u003c\/strong\u003e and an \u003cstrong\u003eEER2 of 13\u003c\/strong\u003e for the SENA-36HF-MOA. It also indicates an HSPF2 of \u003cstrong\u003e10.7 for Region 4\u003c\/strong\u003e and \u003cstrong\u003e8.5 for Region 5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSEER2 represents seasonal cooling efficiency according to a standardized testing methodology.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner who uses air conditioning extensively in \u003cstrong\u003eMontreal or Laval\u003c\/strong\u003e, a SEER2 rating of 23 is therefore highly relevant.\u003c\/p\u003e\n\u003cp\u003eHowever, we advise against selecting a heat pump based solely on its SEER2 rating.\u003c\/p\u003e\n\u003cp\u003eAn extremely efficient system on paper can lose some of its advantage if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe indoor units are poorly positioned;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant lines are improperly installed;\u003c\/li\u003e\n\u003cli\u003ethe system is oversized;\u003c\/li\u003e\n\u003cli\u003ethe filters are neglected;\u003c\/li\u003e\n\u003cli\u003ea unit blows directly toward a staircase rather than toward the occupied area;\u003c\/li\u003e\n\u003cli\u003ethe drains are poorly designed;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant is not managed properly during commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA heat pump’s efficiency is therefore the result of two elements: \u003cstrong\u003ethe equipment and the installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e38,000 BTU at -8 °C: a particularly interesting figure for Montreal\u003c\/h3\u003e\n\u003cp\u003eThe available data for this configuration indicate a heating capacity of approximately \u003cstrong\u003e38,000 BTU\/h at -8 °C\u003c\/strong\u003e, with a \u003cstrong\u003eCOP of 2.12\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003e-15 °C\u003c\/strong\u003e, the listed capacity is still approximately \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis data is particularly relevant in Quebec, since a heat pump is not evaluated only during the mild temperatures of fall. Its performance at -8 °C and -15 °C provides a much more useful indication of what it can deliver during a significant portion of the heating season.\u003c\/p\u003e\n\u003cp\u003eA system capable of maintaining a large portion of its rated capacity at these temperatures can further reduce reliance on backup heating, provided it has been properly sized for the building.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C, capacity decreases: this must be taken into account\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE is advertised as continuing to provide heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, which is also confirmed in the manufacturer’s documentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt this extreme temperature, the data provided for the configuration indicate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eheating capacity: approximately 22,400 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP: approximately 1.47\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis figure deserves more attention than the simple statement “heating down to -30 °C.”\u003c\/p\u003e\n\u003cp\u003eA 36,000 BTU heat pump therefore does not necessarily produce 36,000 BTU when the outdoor temperature reaches -30 °C.\u003c\/p\u003e\n\u003cp\u003eIf a home loses, for example, 35,000 BTU\/h at this temperature and the heat pump provides approximately 22,400, the difference must be supplied by another heating source.\u003c\/p\u003e\n\u003cp\u003eDepending on the property, this may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eelectric baseboard heaters;\u003c\/li\u003e\n\u003cli\u003ean existing furnace;\u003c\/li\u003e\n\u003cli\u003econvector heaters;\u003c\/li\u003e\n\u003cli\u003eanother backup system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt AirGreen, we prefer to explain this reality when selecting the system rather than creating the impression that a minimum operating temperature automatically represents full rated capacity.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.12 at -8°C: what this means in simple terms\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003eCOP of 2.12\u003c\/strong\u003e means that, at the corresponding temperature condition, the heat pump can provide approximately 2.12 units of heat for each unit of electricity consumed by the heat-pumping process.\u003c\/p\u003e\n\u003cp\u003eAt -30°C, the indicated COP drops to \u003cstrong\u003e1,47\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is normal: the lower the outdoor temperature drops, the more difficult it becomes to extract heat from outside and transfer it indoors.\u003c\/p\u003e\n\u003cp\u003eActual performance may also vary depending on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edefrost cycles;\u003c\/li\u003e\n\u003cli\u003ethe requested indoor temperature;\u003c\/li\u003e\n\u003cli\u003ethe number of active zones;\u003c\/li\u003e\n\u003cli\u003ethe length of the lines;\u003c\/li\u003e\n\u003cli\u003ecompressor modulation;\u003c\/li\u003e\n\u003cli\u003eoutdoor conditions;\u003c\/li\u003e\n\u003cli\u003ethe condition of the filters and coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA true cold-climate heat pump\u003c\/h3\u003e\n\u003cp\u003eThe configuration is listed as \u003cstrong\u003eCOLD CLIMATE: Yes\u003c\/strong\u003e, and Senville’s documentation also presents the system as optimized for cold climates, with heating maintained down to \u003cstrong\u003e-22°F, or -30°C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis clearly distinguishes it from a model that can operate only down to -15°C or -20°C.\u003c\/p\u003e\n\u003cp\u003eFor a property in \u003cstrong\u003eLongueuil, Terrebonne, Laval, Boucherville, Repentigny, or Montréal\u003c\/strong\u003e, this operating range corresponds much better to the use we expect from a heat pump used as the primary heating source for a large part of the winter.\u003c\/p\u003e\n\u003ch3\u003eAn ENERGY STAR certification and a specific AHRI number\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENA-36HF-MOA\u003c\/strong\u003e is listed as \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e, with reference \u003cstrong\u003e3630064\u003c\/strong\u003e and AHRI number \u003cstrong\u003e215735317\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure also explicitly mentions the system’s ENERGY STAR certification and AHRI certification. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AHRI number is important because it identifies a certified combination rather than merely a product family.\u003c\/p\u003e\n\u003cp\u003eWhen we prepare an installation involving financial assistance, we must ensure that the installed equipment matches the eligible pairing.\u003c\/p\u003e\n\u003ch3\u003eUp to $4,560 in indicated provincial grants\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen sheet indicates a \u003cstrong\u003e$4,560 provincial grant\u003c\/strong\u003e for this configuration.\u003c\/p\u003e\n\u003cp\u003eThis amount can make comparison with less efficient systems particularly worthwhile.\u003c\/p\u003e\n\u003cp\u003eHowever, a grant amount should never be considered automatically guaranteed. Programs may impose conditions related in particular to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe building;\u003c\/li\u003e\n\u003cli\u003ethe system type;\u003c\/li\u003e\n\u003cli\u003ethe AHRI number;\u003c\/li\u003e\n\u003cli\u003ethe certification;\u003c\/li\u003e\n\u003cli\u003ethe installation date;\u003c\/li\u003e\n\u003cli\u003ethe contractor;\u003c\/li\u003e\n\u003cli\u003ethe required documentation;\u003c\/li\u003e\n\u003cli\u003ethe criteria in effect at the time of the application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore always recommend confirming actual eligibility before calculating a project’s net cost.\u003c\/p\u003e\n\u003ch3\u003eAn outdoor unit weighing more than 200 lb: the location must be properly prepared\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures \u003cstrong\u003e38.58 in × 16.34 in × 38.39 in\u003c\/strong\u003e and weighs approximately \u003cstrong\u003e211.86 lb\u003c\/strong\u003e. The manufacturer also specifies a maximum outdoor airflow of \u003cstrong\u003e3,037.2 CFM\u003c\/strong\u003e and a sound level of \u003cstrong\u003e65 dB\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is therefore not a small outdoor unit.\u003c\/p\u003e\n\u003cp\u003eFor an installation in \u003cstrong\u003eMontreal or Longueuil\u003c\/strong\u003e, where side passages can be narrow, we must measure the location before delivery.\u003c\/p\u003e\n\u003cp\u003eOn the \u003cstrong\u003eNorth Shore or South Shore\u003c\/strong\u003e, space is often more generous, but other constraints arise: snow accumulation, terrain slope, terrace, bedroom windows, or neighboring properties.\u003c\/p\u003e\n\u003cp\u003eA proper outdoor installation must include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea stable base;\u003c\/li\u003e\n\u003cli\u003esufficient height above the snow;\u003c\/li\u003e\n\u003cli\u003eadequate clearance around the heat exchanger;\u003c\/li\u003e\n\u003cli\u003eaccess for maintenance;\u003c\/li\u003e\n\u003cli\u003ea logical route for both piping sets;\u003c\/li\u003e\n\u003cli\u003eproper drain management;\u003c\/li\u003e\n\u003cli\u003ea location that avoids unnecessarily directing noise toward a bedroom or neighboring terrace.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e65 dB outdoors: how to interpret the sound level\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer specifies \u003cstrong\u003e65 dB\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis value must be considered when choosing the location.\u003c\/p\u003e\n\u003cp\u003eA unit installed against a bedroom wall, beneath a window, or in a narrow passage between two buildings may be perceived differently from a unit placed in an open area.\u003c\/p\u003e\n\u003cp\u003eReflective surfaces can also affect how sound is perceived.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, choosing the outdoor location is therefore part of the design, not just a matter of aesthetics.\u003c\/p\u003e\n\u003ch3\u003eMCA 37 A and maximum protection of 40 A\u003c\/h3\u003e\n\u003cp\u003eThe technical data sheet states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003epower supply: 208\/230 V, single-phase, 60 Hz\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003evoltage range: \u003cstrong\u003e187 to 253 V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 37 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emaximum protection: 40 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis information must be verified before installation.\u003c\/p\u003e\n\u003cp\u003eIn an older Montreal home equipped with a 100 A panel, for example, we do not assume that a new heat pump circuit can simply be added without analysis.\u003c\/p\u003e\n\u003cp\u003eThe available capacity at the electrical panel, existing loads, and the project’s electrical requirements must be verified.\u003c\/p\u003e\n\u003ch3\u003eR-454B: another generation of refrigerant\u003c\/h3\u003e\n\u003cp\u003eThe system uses \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe documentation indicates a charge of \u003cstrong\u003e134.04 oz\u003c\/strong\u003e and specifies that the unit is \u003cstrong\u003eprecharged for up to 125 ft of refrigerant line\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis substantial precharge is particularly relevant for a multi-zone heat pump, since two indoor units may require separate piping runs.\u003c\/p\u003e\n\u003cp\u003eHowever, “precharged for 125 ft” should not be interpreted as authorization to install any length or configuration without respecting the manufacturer’s specified limits.\u003c\/p\u003e\n\u003cp\u003eEach branch must be properly designed, with the appropriate diameters and a compliant installation.\u003c\/p\u003e\n\u003ch3\u003eWhy piping matters even more on a two-zone system\u003c\/h3\u003e\n\u003cp\u003eThe configuration specifies \u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e piping.\u003c\/p\u003e\n\u003cp\u003eOn a two-zone system, we must manage two separate refrigerant lines from the outdoor unit.\u003c\/p\u003e\n\u003cp\u003eIn a duplex, a two-story house, or a property with one indoor unit at the front and the other at the back, the lengths can become substantial.\u003c\/p\u003e\n\u003cp\u003eA clean installation notably requires:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ea well-planned route before drilling;\u003c\/li\u003e\n\u003cli\u003ean appropriate slope for gravity drains;\u003c\/li\u003e\n\u003cli\u003emechanical protection for the lines;\u003c\/li\u003e\n\u003cli\u003eproperly executed refrigerant connections;\u003c\/li\u003e\n\u003cli\u003ea proper vacuum before commissioning;\u003c\/li\u003e\n\u003cli\u003ea leak-tightness check;\u003c\/li\u003e\n\u003cli\u003ean exterior finish that remains accessible for servicing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eAn error on a single branch can affect the comfort of one zone and complicate future troubleshooting.\u003c\/p\u003e\n\u003ch3\u003eTwo zones do not mean simultaneous heating and cooling\u003c\/h3\u003e\n\u003cp\u003eThis is a common question with multi-zone heat pumps.\u003c\/p\u003e\n\u003cp\u003eIndoor units connected to the same outdoor unit generally need to operate in a compatible mode. In other words, you should not expect to heat one zone significantly while the other is simultaneously providing cooling.\u003c\/p\u003e\n\u003cp\u003eIn a typical residence, this is generally not a problem.\u003c\/p\u003e\n\u003cp\u003eHowever, in a property with very different orientations, a large sun-exposed sunroom, and a cold north-facing room, this point can become important during the shoulder seasons.\u003c\/p\u003e\n\u003cp\u003eWe take this into account before recommending a multi-zone configuration.\u003c\/p\u003e\n\u003ch3\u003eWi-Fi included and Alexa integration\u003c\/h3\u003e\n\u003cp\u003eThe SENA-36HF-MOA includes smart control features.\u003c\/p\u003e\n\u003cp\u003eThe documentation indicates \u003cstrong\u003eapp control\u003c\/strong\u003e, \u003cstrong\u003eAlexa\u003c\/strong\u003e compatibility, and the ability to schedule the system and manage comfort remotely. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe manufacturer also lists an \u003cstrong\u003eAlexa USB kit\u003c\/strong\u003e, wireless remote controls, and communication wiring among the included components. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a two-zone installation, this feature is more useful than in multiple single-zone systems, because the homeowner can manage the two spaces separately without having to go to each unit.\u003c\/p\u003e\n\u003ch3\u003eAutomatic vertical and horizontal louvers\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen configuration indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003evertical louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ehorizontal louvers: automatic\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the airflow to be directed more effectively in a large room.\u003c\/p\u003e\n\u003cp\u003eHowever, the unit’s location remains crucial. Even with motorized oscillation, a unit installed too close to a wall, directly in front of a staircase, or in a poorly chosen corner will not distribute air as effectively as a unit positioned after analyzing the room.\u003c\/p\u003e\n\u003ch3\u003eIntegrated diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville documentation mentions an integrated \u003cstrong\u003ediagnostic and leak-detection system\u003c\/strong\u003e, with monitoring capable of alerting the user to a problem, particularly one related to refrigerant. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese functions can speed up the identification of certain anomalies, but they do not replace a technical diagnosis.\u003c\/p\u003e\n\u003cp\u003eAn error code often helps identify a group of problems; it does not necessarily indicate which part needs to be replaced.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we use diagnostic information as a starting point, then verify the system’s actual conditions.\u003c\/p\u003e\n\u003ch3\u003e“Up to 1,800 sq. ft.”: a marketing indication, not a sizing method\u003c\/h3\u003e\n\u003cp\u003eSenville documentation indicates that the system can cover \u003cstrong\u003eup to 1,800 sq. ft.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe recommend treating this figure with caution.\u003c\/p\u003e\n\u003cp\u003eA recently built 1,800 sq. ft. home on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e and a century-old 1,800 sq. ft. home in Montreal can have completely different heat losses.\u003c\/p\u003e\n\u003cp\u003eEven the distribution of the 1,800 sq. ft. changes the result.\u003c\/p\u003e\n\u003cp\u003eAn open bungalow does not perform the same way as a three-story house with several enclosed bedrooms.\u003c\/p\u003e\n\u003cp\u003eWe therefore use area as one piece of data among several others, never as the sole sizing criterion.\u003c\/p\u003e\n\u003ch2\u003eAirGreen Installation: how to turn a good specification sheet into true comfort in two zones\u003c\/h2\u003e\n\u003ch3\u003eThe choice of the two indoor units is just as important as that of the outdoor compressor\u003c\/h3\u003e\n\u003cp\u003eThe system documentation indicates that it can support \u003cstrong\u003e2 to 5 zones\u003c\/strong\u003e, depending on the configuration. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn the application discussed here, we are referring to a \u003cstrong\u003etwo-zone configuration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer offers, among other options, an \u003cstrong\u003e18,000 + 18,000 BTU\u003c\/strong\u003e combination, but the right combination must be adapted to the building. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTwo zones of similar area do not always require the same indoor unit.\u003c\/p\u003e\n\u003cp\u003eA large open room with a cathedral ceiling may have a higher load than a floor of comparable area with several well-insulated bedrooms.\u003c\/p\u003e\n\u003cp\u003eThe distribution must therefore be decided before ordering.\u003c\/p\u003e\n\u003ch3\u003eThe mistake we want to avoid: choosing the heads based solely on square footage\u003c\/h3\u003e\n\u003cp\u003eSuppose that two zones are each 800 sq. ft.\u003c\/p\u003e\n\u003cp\u003eIt would be tempting to conclude that they require the same capacity.\u003c\/p\u003e\n\u003cp\u003eBut the first may have:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elarge patio doors;\u003c\/li\u003e\n\u003cli\u003ea 12-foot ceiling;\u003c\/li\u003e\n\u003cli\u003ea southwest-facing orientation;\u003c\/li\u003e\n\u003cli\u003ean open kitchen;\u003c\/li\u003e\n\u003cli\u003emore air infiltration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe second may include rooms with small windows and standard-height ceilings.\u003c\/p\u003e\n\u003cp\u003eThe number of square feet is the same, but the load is not.\u003c\/p\u003e\n\u003cp\u003eThat is why we assess the building’s actual conditions before choosing the distribution of the indoor units.\u003c\/p\u003e\n\u003ch3\u003eThe drains can be more complicated than the refrigerant lines\u003c\/h3\u003e\n\u003cp\u003eOn a wall-mounted heat pump, each indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eWith two zones, we therefore have two drains to manage.\u003c\/p\u003e\n\u003cp\u003eWhen a natural slope toward the outside is available, drainage remains relatively simple. When the unit must be installed on an interior wall or in a configuration where gravity is insufficient, a condensate pump may be required.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we try to account for this aspect during the estimate because poor drainage can lead to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewater leaks;\u003c\/li\u003e\n\u003cli\u003epump noise;\u003c\/li\u003e\n\u003cli\u003emarks on the wall;\u003c\/li\u003e\n\u003cli\u003eadditional maintenance;\u003c\/li\u003e\n\u003cli\u003esystem shutdowns if a safety device is triggered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe warranty deserves careful verification\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen listing indicates a \u003cstrong\u003e10-10-0 manufacturer’s warranty\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eHowever, the Senville documentation provided specifies \u003cstrong\u003e10 years on the compressor and 5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt also states that \u003cstrong\u003eprofessional installation is required\u003c\/strong\u003e to maintain full warranty coverage and the expected performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen preparing a quote, we therefore always recommend confirming the exact coverage corresponding to the system combination sold, the registration conditions, and the terms in effect.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer’s warranty and a labor warranty are two different protections.\u003c\/p\u003e\n\u003ch3\u003eSimple maintenance, but two indoor units to monitor\u003c\/h3\u003e\n\u003cp\u003eOne of the advantages of a ductless heat pump is the absence of a central network to maintain.\u003c\/p\u003e\n\u003cp\u003eHowever, this does not mean “zero maintenance.”\u003c\/p\u003e\n\u003cp\u003eEach indoor unit has its own filters and heat exchanger.\u003c\/p\u003e\n\u003cp\u003eTo maintain good performance, we particularly recommend:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eto clean the filters regularly;\u003c\/li\u003e\n\u003cli\u003eto monitor dust buildup in the blower wheels;\u003c\/li\u003e\n\u003cli\u003eto keep the air inlets and outlets clear;\u003c\/li\u003e\n\u003cli\u003eto check the drains;\u003c\/li\u003e\n\u003cli\u003eto avoid blocking the outdoor unit with objects or vegetation;\u003c\/li\u003e\n\u003cli\u003eto keep the outdoor unit clear of snow;\u003c\/li\u003e\n\u003cli\u003eto have the indoor units thoroughly cleaned when dirt buildup warrants it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a two-zone system, a very dirty unit may operate less efficiently than the other and give the impression that the system is distributing its capacity poorly.\u003c\/p\u003e\n\u003ch3\u003eWhen this SENVILLE 36,000 BTU 2-zone system is an excellent candidate\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA-36HF-MOA R454B\u003c\/strong\u003e is particularly worth considering when a homeowner wants to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eheat and cool two large zones with a single outdoor unit;\u003c\/li\u003e\n\u003cli\u003eget a heat pump that operates down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003etake advantage of a \u003cstrong\u003e23 SEER2\u003c\/strong\u003e rating;\u003c\/li\u003e\n\u003cli\u003emaintain strong heating capacity at -8 °C and -15 °C;\u003c\/li\u003e\n\u003cli\u003ebenefit from an \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e system;\u003c\/li\u003e\n\u003cli\u003eget the included Wi-Fi control;\u003c\/li\u003e\n\u003cli\u003ereduce the number of outdoor units;\u003c\/li\u003e\n\u003cli\u003etake advantage, if eligible, of financial assistance of up to \u003cstrong\u003e4 560 $\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is particularly well suited to projects where the two zones can operate in a complementary manner and where the placement of the indoor units allows for good air distribution.\u003c\/p\u003e\n\u003ch3\u003eWhen we would consider another configuration\u003c\/h3\u003e\n\u003cp\u003eWe might recommend a different approach if:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe two zones have extremely different needs;\u003c\/li\u003e\n\u003cli\u003ethey frequently need to operate in opposite modes;\u003c\/li\u003e\n\u003cli\u003ea single indoor unit cannot properly distribute air throughout a divided zone;\u003c\/li\u003e\n\u003cli\u003ethe actual total load exceeds what the system can provide during extreme cold;\u003c\/li\u003e\n\u003cli\u003ethe distance or line-set configuration makes the installation excessively complicated;\u003c\/li\u003e\n\u003cli\u003etwo independent outdoor units would provide greater flexibility for the project.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe best system is therefore not necessarily the one with the highest BTU rating. It is the one whose design matches the building.\u003c\/p\u003e\n\u003ch3\u003eWhy have AirGreen install this 2-zone heat pump\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Climatisation \u0026amp; Chauffage\u003c\/strong\u003e, we do not reduce a multi-zone installation to choosing a location for two wall-mounted units.\u003c\/p\u003e\n\u003cp\u003eWe analyze the entire project:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecapacity of each zone;\u003c\/li\u003e\n\u003cli\u003esolar exposure;\u003c\/li\u003e\n\u003cli\u003eair circulation;\u003c\/li\u003e\n\u003cli\u003eceiling height;\u003c\/li\u003e\n\u003cli\u003eindoor unit placement;\u003c\/li\u003e\n\u003cli\u003eline-set length;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003eelectrical supply;\u003c\/li\u003e\n\u003cli\u003eoutdoor location;\u003c\/li\u003e\n\u003cli\u003esnow management;\u003c\/li\u003e\n\u003cli\u003enoise level;\u003c\/li\u003e\n\u003cli\u003efuture accessibility for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis approach is especially important with a \u003cstrong\u003e36,000 BTU 2-zone heat pump\u003c\/strong\u003e, since both spaces depend on the same outdoor unit.\u003c\/p\u003e\n\u003cp\u003eA well-designed configuration lets you take advantage of inverter modulation, heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, \u003cstrong\u003e23 SEER2\u003c\/strong\u003e, and individual zone control. Conversely, poor placement of the indoor units can reduce comfort despite very appealing technical specifications.\u003c\/p\u003e\n\u003ch3\u003eGet an AirGreen quote for the SENVILLE 2-Zone R454B 36,000 BTU\u003c\/h3\u003e\n\u003cp\u003eAre you considering a \u003cstrong\u003eSENVILLE 2-zone 36,000 BTU heat pump\u003c\/strong\u003e for a house, condo, duplex, or business?\u003c\/p\u003e\n\u003cp\u003eContact \u003cstrong\u003eAirGreen\u003c\/strong\u003e for an assessment of your project. We can verify the required capacity for each zone, the location of the units, the line-set routing, drainage, electrical supply, and eligibility for applicable financial assistance programs.\u003c\/p\u003e\n\u003cp\u003eWe install and service \u003cstrong\u003emulti-zone heat pumps in Montreal, Laval, Longueuil, the North Shore, the South Shore, and Montérégie\u003c\/strong\u003e, with particular attention to sizing and commissioning quality.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"18  + 18","offer_id":56200893956388,"sku":"SENA-36HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"12 + 24","offer_id":56200893989156,"sku":"SENA-36HF-MOA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_2_ZONES_SENVILLE_R454B_36000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789057723","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-2-zones-senville-r454b-36000-btu","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}