{"title":"Conduit Gainable SENVILLE | Installation à Montréal, Laval, Longueuil, Rive Sud et Rive Nord","description":null,"products":[{"product_id":"thermopompe-gainable-senville-sena-r454b-9000-btu","title":"Ducted Heat Pump SENVILLE SENA R454B | 9000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eA 9,000 BTU heat pump that disappears into the ceiling while distributing air where a wall-mounted head cannot\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 9,000 BTU ducted heat pump\u003c\/strong\u003e, consisting of the \u003cstrong\u003eSENA-09HF-OG\u003c\/strong\u003e outdoor unit and the concealed \u003cstrong\u003eSENA-09HF-IDG\u003c\/strong\u003e indoor unit, is suited to an HVAC project very different from that of a conventional wall-mounted heat pump.\u003c\/p\u003e\n\u003cp\u003eInstead of installing a visible head on a wall, the indoor unit is concealed in a ceiling, soffit, interceiling space, or suitable mechanical area. Air is then distributed using \u003cstrong\u003eshort ducts and supply grilles\u003c\/strong\u003e, while a return grille allows air to flow back to the unit.\u003c\/p\u003e\n\u003cp\u003eFor certain projects in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore, and the South Shore\u003c\/strong\u003e, this is precisely what makes the difference between an installation that is merely functional and one that is truly integrated into the architecture.\u003c\/p\u003e\n\u003cp\u003eSenville’s documentation describes the model as a concealed \u003cstrong\u003e9,000 BTU\u003c\/strong\u003e ducted system, ENERGY STAR certified and capable of providing heating and cooling year-round. The manufacturer also states that it can operate in heating mode down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat this 9,000 BTU SENVILLE ducted system actually includes\u003c\/h3\u003e\n\u003cp\u003eThe main data provided for the AirGreen configuration are:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eData\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutdoor unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSENA-09HF-OG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDucted indoor unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSENA-09HF-IDG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAHRI reference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e215735300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal cooling capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9,000 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRefrigerant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-454B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCold climate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSEER2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21,4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEER2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13,4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHSPF2 Region 4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeating down to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity at -8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9,600 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity at -15 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11,200 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum capacity at -30 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6,400 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCOP at -8 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum COP at -30 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,27\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum indoor airflow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eapproximately 400 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiFi\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4 in – 3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e208\/230 V, single-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe brochure’s technical table confirms \u003cstrong\u003e9,000 BTU\/h in cooling\u003c\/strong\u003e, a nominal \u003cstrong\u003e10,000 BTU\/h heating capacity\u003c\/strong\u003e, a \u003cstrong\u003e21.4 SEER2\u003c\/strong\u003e, a \u003cstrong\u003e13.4 EER2\u003c\/strong\u003e, and an \u003cstrong\u003eHSPF2 Region 4 of 12.5\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA ducted unit is not a small central furnace\u003c\/h3\u003e\n\u003cp\u003eThis is the first distinction we explain when carrying out this type of installation.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e9,000 BTU ducted heat pump\u003c\/strong\u003e uses ducts, but it is not designed to automatically replace a large central system serving an entire house.\u003c\/p\u003e\n\u003cp\u003eIts purpose is rather to discreetly treat \u003cstrong\u003ea limited area\u003c\/strong\u003e with a few well-positioned air outlets.\u003c\/p\u003e\n\u003cp\u003eFor example, on a floor with two small bedrooms and a corridor, it may sometimes be more attractive to install the ducted unit in a ceiling space and distribute the air through several grilles rather than placing two visible wall-mounted units.\u003c\/p\u003e\n\u003cp\u003eIn a \u003cstrong\u003eMontreal\u003c\/strong\u003e condo, it can also serve an adjacent bedroom and office when the architecture allows for a compact duct network.\u003c\/p\u003e\n\u003cp\u003eThe principle remains the same: \u003cstrong\u003e9,000 BTU must be sized for the zone’s actual heating and cooling load\u003c\/strong\u003e, not for the number of grilles you want to install.\u003c\/p\u003e\n\u003ch3\u003eOnly 7.87 inches high: a significant advantage in tight ceilings\u003c\/h3\u003e\n\u003cp\u003eThe indoor unit measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e27.56 in. wide × 19.92 in. deep × 7.87 in. high.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt weighs approximately \u003cstrong\u003e39.46 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis low height is particularly advantageous in renovations.\u003c\/p\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal and Longueuil\u003c\/strong\u003e, we frequently work in properties where every inch counts: relatively low basement ceilings, existing soffits, structural beams, existing plumbing, or ducts.\u003c\/p\u003e\n\u003cp\u003eAn indoor unit less than eight inches high can sometimes fit where a thicker unit would require lowering a large section of ceiling.\u003c\/p\u003e\n\u003cp\u003eBut the unit’s dimensions are only part of the calculation.\u003c\/p\u003e\n\u003cp\u003eYou must also plan for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe duct connections;\u003c\/li\u003e\n\u003cli\u003ethe return grille;\u003c\/li\u003e\n\u003cli\u003ethe supply outlets;\u003c\/li\u003e\n\u003cli\u003ethe condensate drain;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant piping;\u003c\/li\u003e\n\u003cli\u003ethe wiring;\u003c\/li\u003e\n\u003cli\u003efuture access to the filter and components;\u003c\/li\u003e\n\u003cli\u003ethe clearances required for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn overly compact installation that makes the unit inaccessible quickly becomes problematic during an \u003cstrong\u003eHVAC service call\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eApproximately 400 CFM: the duct network must accommodate this airflow\u003c\/h3\u003e\n\u003cp\u003eThe brochure provides the following airflow rates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e400.2 CFM at maximum\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e323.7 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e264.9 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e176.6 CFM at the low setting\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThese figures are particularly important for a ducted unit.\u003c\/p\u003e\n\u003cp\u003eWith approximately \u003cstrong\u003e400 CFM available at maximum\u003c\/strong\u003e, we cannot arbitrarily connect a large number of ducts, elbows, grilles, and long flexible sections without considering pressure losses.\u003c\/p\u003e\n\u003cp\u003eThis is one of the most common mistakes in ducted installations: treating the duct as a simple means of transporting air without considering the resistance it imposes on the fan.\u003c\/p\u003e\n\u003ch3\u003eThe scenario we want to avoid\u003c\/h3\u003e\n\u003cp\u003eLet’s consider a representative installation.\u003c\/p\u003e\n\u003cp\u003eA homeowner wants to completely conceal the system and requests four small grilles distributed among several rooms. On paper, this seems simple.\u003c\/p\u003e\n\u003cp\u003eBut if the network includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elong flexible sections;\u003c\/li\u003e\n\u003cli\u003eseveral tight bends;\u003c\/li\u003e\n\u003cli\u003ediameter reductions;\u003c\/li\u003e\n\u003cli\u003ea small return grille;\u003c\/li\u003e\n\u003cli\u003eoverly restrictive dampers,\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ethe indoor fan may have much more difficulty moving the \u003cstrong\u003e400 CFM specified\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe result may be:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eless air reaching the distant grilles;\u003c\/li\u003e\n\u003cli\u003emore noise;\u003c\/li\u003e\n\u003cli\u003ea temperature difference between rooms;\u003c\/li\u003e\n\u003cli\u003elower-than-expected performance;\u003c\/li\u003e\n\u003cli\u003elonger system operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, we therefore consider the distribution network an integral part of the heat pump.\u003c\/p\u003e\n\u003ch3\u003eA modulation range that drops to approximately 3,400 BTU in cooling mode\u003c\/h3\u003e\n\u003cp\u003eThe technical table indicates a cooling range of \u003cstrong\u003e3,400 to 13,500 BTU\/h\u003c\/strong\u003e and a heating range of \u003cstrong\u003e3,800 to 16,200 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis modulation is particularly useful for a small area.\u003c\/p\u003e\n\u003cp\u003eThe machine does not need to constantly produce its rated 9,000 BTU. When the load decreases, the inverter compressor can reduce its speed.\u003c\/p\u003e\n\u003cp\u003eThis is important in a bedroom or small office because a unit operating continuously at full power could reach its setpoint very quickly.\u003c\/p\u003e\n\u003cp\u003eGood modulation can promote:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emore stable temperature;\u003c\/li\u003e\n\u003cli\u003efewer on-off cycles;\u003c\/li\u003e\n\u003cli\u003egreater comfort;\u003c\/li\u003e\n\u003cli\u003econsumption better suited to demand;\u003c\/li\u003e\n\u003cli\u003equieter operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA rated heating capacity of 10,000 BTU\u003c\/h3\u003e\n\u003cp\u003eEven though the product is marketed as a \u003cstrong\u003e9,000 BTU\u003c\/strong\u003e unit, the brochure indicates a rated heating capacity of \u003cstrong\u003e10,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThat is normal: a heat pump's heating capacity and cooling capacity are not necessarily identical.\u003c\/p\u003e\n\u003cp\u003eFor winter sizing, we mainly look at the available capacity when the temperature drops.\u003c\/p\u003e\n\u003ch3\u003e9,600 BTU at -8 °C and 11,200 BTU at -15 °C\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet provides two values that are particularly interesting for Quebec:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9,600 BTU\/h at -8 °C\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e11,200 BTU\/h at -15 °C\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis means that this small unit can maintain significant heating capacity during a large part of the Montreal winter.\u003c\/p\u003e\n\u003cp\u003eHowever, operation at -30 °C is very different.\u003c\/p\u003e\n\u003ch3\u003eAt -30 °C: 6,400 BTU maximum\u003c\/h3\u003e\n\u003cp\u003eThe heat pump is advertised as continuing to operate down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e, a limit confirmed by Senville documentation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBut the AirGreen product sheet indicates that at this temperature, the maximum capacity is approximately \u003cstrong\u003e6,400 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is a fundamental distinction.\u003c\/p\u003e\n\u003cp\u003e“Operation down to -30 °C” does not mean “9,000 BTU available down to -30 °C.”\u003c\/p\u003e\n\u003cp\u003eIf the served zone loses 8,000 BTU\/h at this temperature, a supplementary heating source may become necessary.\u003c\/p\u003e\n\u003ch3\u003eCOP of 2.49 at -8 °C and 1.27 at -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCOP\u003c\/strong\u003e, or coefficient of performance, helps explain heating efficiency.\u003c\/p\u003e\n\u003cp\u003eAt -8 °C, a \u003cstrong\u003eCOP of 2.49\u003c\/strong\u003e means that the heat pump transfers approximately 2.49 units of heat for every unit of electricity used under this operating condition.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, the maximum published COP drops to \u003cstrong\u003e1,27\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003ePerformance therefore decreases as the cold becomes extreme, which is normal for an air-source heat pump.\u003c\/p\u003e\n\u003cp\u003eFor a property in \u003cstrong\u003eLaval, Longueuil, Montreal, the North Shore, or the South Shore\u003c\/strong\u003e, annual savings should be assessed over the entire heating season, not just during a few very cold nights in January.\u003c\/p\u003e\n\u003ch3\u003eSEER2 21.4 and HSPF2 12.5: an interesting profile for a small zone\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEER2 of 21.4\u003c\/strong\u003e indicates good seasonal cooling efficiency, while the \u003cstrong\u003eHSPF2 Region 4 of 12.5\u003c\/strong\u003e characterizes seasonal heating performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn a project where this heat pump replaces part of the direct electric heating, winter efficiency often becomes more important than cooling performance alone.\u003c\/p\u003e\n\u003cp\u003eSizing remains essential, however. An excellent HSPF2 cannot compensate for a unit that is too small for the space’s actual load.\u003c\/p\u003e\n\u003ch2\u003eWhere AirGreen makes the difference on a 9,000 BTU ducted heat pump\u003c\/h2\u003e\n\u003ch3\u003eThe return grille is just as important as the supply grilles\u003c\/h3\u003e\n\u003cp\u003eWhen we see a completed ducted system, the small supply grilles often attract attention.\u003c\/p\u003e\n\u003cp\u003eThe return grille is nevertheless just as important.\u003c\/p\u003e\n\u003cp\u003eThe unit must be able to draw in enough air to supply its fan. An overly restrictive return can reduce airflow, increase noise, and unbalance the system.\u003c\/p\u003e\n\u003cp\u003eWe therefore look for a location that allows air to return easily to the unit without creating a short circuit between the supply and return.\u003c\/p\u003e\n\u003ch3\u003eThe ductwork should remain short and logical\u003c\/h3\u003e\n\u003cp\u003eA unit rated at only \u003cstrong\u003e9,000 BTU and approximately 400 CFM\u003c\/strong\u003e is not intended to supply, without careful planning, an extensive network spanning several floors.\u003c\/p\u003e\n\u003cp\u003eIn projects where it performs best, the ductwork is generally:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erelatively short;\u003c\/li\u003e\n\u003cli\u003esized for the expected airflow;\u003c\/li\u003e\n\u003cli\u003elimited in unnecessary bends;\u003c\/li\u003e\n\u003cli\u003einsulated where necessary;\u003c\/li\u003e\n\u003cli\u003einstalled in a way that limits air leakage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe exact number of outlets must be determined based on the project rather than according to a fixed rule.\u003c\/p\u003e\n\u003ch3\u003eA very interesting solution for two small adjacent rooms\u003c\/h3\u003e\n\u003cp\u003eA typical scenario involves a bedroom and an office separated by a partition, with accessible ceiling space nearby.\u003c\/p\u003e\n\u003cp\u003eA wall-mounted head in only one room would not distribute air properly to the other.\u003c\/p\u003e\n\u003cp\u003eTwo wall-mounted heat pumps would be possible, but they would involve two visible units and potentially a more extensive installation.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e9,000 BTU SENVILLE ducted heat pump\u003c\/strong\u003e may sometimes allow the installation of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ean outlet in the bedroom;\u003c\/li\u003e\n\u003cli\u003ean outlet in the office;\u003c\/li\u003e\n\u003cli\u003ea properly positioned common return.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis configuration must naturally be validated based on the load of both rooms.\u003c\/p\u003e\n\u003ch3\u003eVery quiet indoor unit\u003c\/h3\u003e\n\u003cp\u003eThe brochure lists indoor sound levels of approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e29.5 to 32.5 dB(A)\u003c\/strong\u003e depending on the operating mode. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is an interesting feature for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea bedroom;\u003c\/li\u003e\n\u003cli\u003ean office;\u003c\/li\u003e\n\u003cli\u003ea library;\u003c\/li\u003e\n\u003cli\u003ea workspace;\u003c\/li\u003e\n\u003cli\u003ea small studio.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a ducted system, however, perceived noise also depends on the ducts and grilles.\u003c\/p\u003e\n\u003cp\u003eA grille that is too small or an air velocity that is too high can create a whistling sound even if the mechanical unit itself is quiet.\u003c\/p\u003e\n\u003ch3\u003eAn issue to correct in the outdoor sound data\u003c\/h3\u003e\n\u003cp\u003eThe submitted specification sheet indicates \u003cstrong\u003e615.0 dB(A)\u003c\/strong\u003e for the outdoor sound level. This value does not match the manufacturer’s technical table.\u003c\/p\u003e\n\u003cp\u003eThe Senville brochure indicates \u003cstrong\u003e56 dB(A)\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the technical analysis of this product, \u003cstrong\u003e56 dB(A)\u003c\/strong\u003e is therefore the figure provided in the manufacturer’s documentation.\u003c\/p\u003e\n\u003cp\u003eThis verification illustrates why we always compare the commercial specification sheet with the technical documentation before finalizing a quote.\u003c\/p\u003e\n\u003ch3\u003eA compact 72.75 lb outdoor unit\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e31.69 × 12.99 × 21.81 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs only \u003cstrong\u003e72.75 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIts maximum outdoor airflow is approximately \u003cstrong\u003e1,470.6 CFM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis relatively compact format makes several installations easier where space is limited.\u003c\/p\u003e\n\u003cp\u003eBut even a small heat pump designed to operate down to -30 °C must be installed high enough to prevent snow from obstructing its coil.\u003c\/p\u003e\n\u003ch3\u003eDefrost cycles must be anticipated\u003c\/h3\u003e\n\u003cp\u003eIn heating mode, the outdoor coil may accumulate frost. The heat pump then periodically performs a defrost cycle.\u003c\/p\u003e\n\u003cp\u003eIt produces water that can freeze beneath the unit.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esufficient clearance;\u003c\/li\u003e\n\u003cli\u003espace beneath the unit;\u003c\/li\u003e\n\u003cli\u003edrainage that does not damage surfaces;\u003c\/li\u003e\n\u003cli\u003ea location that does not create an ice patch in a passageway.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is particularly important for an installation on a balcony or near an entrance.\u003c\/p\u003e\n\u003ch3\u003eR-454B with a factory charge for up to 25 feet\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a charge of \u003cstrong\u003e35.27 oz of R-454B\u003c\/strong\u003e and a factory charge for \u003cstrong\u003e25 ft of piping\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt also specifies that an installation with a 50 ft line set requires the installer to add refrigerant. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe actual line length must therefore be measured during planning.\u003c\/p\u003e\n\u003cp\u003eWith a ducted system, because the indoor unit is sometimes positioned fairly deep inside the building, the refrigerant line route may be longer than with a wall-mounted heat pump located directly on an exterior wall.\u003c\/p\u003e\n\u003ch3\u003e1\/4–3\/8 piping\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates piping of:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1\/4 in – 3\/8 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003efor this combination.\u003c\/p\u003e\n\u003cp\u003eWhen replacing a system, we never assume that old lines can be reused simply because their dimensions appear to match.\u003c\/p\u003e\n\u003cp\u003eThe condition of the copper, the type of previous refrigerant, the cleanliness of the lines, and the manufacturer’s requirements must also be verified.\u003c\/p\u003e\n\u003ch3\u003eAn important difference to verify in the electrical data\u003c\/h3\u003e\n\u003cp\u003eThe provided AirGreen product sheet indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 25 A\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMOP: 25 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, the supplied Senville brochure indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 15 A\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMax Fuse: 15 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis difference must not be resolved by assumption.\u003c\/p\u003e\n\u003cp\u003eBefore the \u003cstrong\u003eelectrical installation\u003c\/strong\u003e, we must follow the nameplate for the exact model and the manual corresponding to the installed \u003cstrong\u003eSENA-09HF-OG \/ SENA-09HF-IDG\u003c\/strong\u003e combination.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important because an oversized or improperly protected circuit must never be selected solely from a commercial product sheet.\u003c\/p\u003e\n\u003ch3\u003eOptional WiFi, Alexa mentioned in the brochure\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates \u003cstrong\u003eoptional WiFi\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe brochure also identifies the system as compatible with remote control and mentions \u003cstrong\u003eAlexa Enabled\u003c\/strong\u003e in the technical table. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn practice, the smart function must be confirmed based on the controller or WiFi module supplied with the configuration ordered.\u003c\/p\u003e\n\u003ch3\u003eR-454B: professional installation remains mandatory\u003c\/h3\u003e\n\u003cp\u003eSenville’s documentation specifies that \u003cstrong\u003eprofessional installation\u003c\/strong\u003e is required to maintain warranty coverage and achieve the intended operation. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis makes particular sense with a ducted unit.\u003c\/p\u003e\n\u003cp\u003eCoordination is required:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erefrigeration;\u003c\/li\u003e\n\u003cli\u003eelectricity;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003eductwork;\u003c\/li\u003e\n\u003cli\u003emechanical support;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003econtrol.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA poorly designed ducted system can be properly charged with refrigerant yet still deliver poor results simply because its air distribution system is inadequate.\u003c\/p\u003e\n\u003ch3\u003eThe condensate drain must be accessible\u003c\/h3\u003e\n\u003cp\u003eIn air conditioning, the indoor unit produces condensate.\u003c\/p\u003e\n\u003cp\u003eBecause the unit is concealed, a drainage problem may remain unnoticed longer than with a wall-mounted head.\u003c\/p\u003e\n\u003cp\u003eWe therefore pay particular attention to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe drain slope;\u003c\/li\u003e\n\u003cli\u003ethe connection;\u003c\/li\u003e\n\u003cli\u003eaccessibility for cleaning;\u003c\/li\u003e\n\u003cli\u003epreventing backflow;\u003c\/li\u003e\n\u003cli\u003eat the risk of damage to the ceiling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA leak from a concealed unit above a ceiling can cost much more than a simple drain cleaning performed preventively.\u003c\/p\u003e\n\u003ch3\u003eMaintenance must not be sacrificed for aesthetics\u003c\/h3\u003e\n\u003cp\u003eThe main aesthetic advantage of a ducted system is hiding the unit.\u003c\/p\u003e\n\u003cp\u003eBut concealing it must never mean blocking access.\u003c\/p\u003e\n\u003cp\u003eWe plan a realistic way to reach:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe filter;\u003c\/li\u003e\n\u003cli\u003ethe heat exchanger;\u003c\/li\u003e\n\u003cli\u003ethe fan;\u003c\/li\u003e\n\u003cli\u003ethe condensate pan;\u003c\/li\u003e\n\u003cli\u003ethe electrical connections;\u003c\/li\u003e\n\u003cli\u003ethe components required for diagnosis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDuring \u003cstrong\u003eHVAC maintenance\u003c\/strong\u003e, our technicians must be able to access the system without dismantling a large portion of the ceiling.\u003c\/p\u003e\n\u003ch3\u003eSelf-diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville mentions \u003cstrong\u003eself-diagnostics and leak detection\u003c\/strong\u003e functions, designed to help identify certain system anomalies. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese features are useful, but they do not replace a professional inspection.\u003c\/p\u003e\n\u003cp\u003eA lack of comfort may also be related to the air distribution system, filters, drainage, or grille sizing.\u003c\/p\u003e\n\u003ch3\u003eWarranty: another documentation difference to confirm\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet presents a warranty \u003cstrong\u003e10-10-0\u003c\/strong\u003e, namely:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-year compressor – 10-year parts – 0-year labor\u003c\/strong\u003e, with the possibility of additional coverage.\u003c\/p\u003e\n\u003cp\u003eHowever, the attached Senville brochure indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-year compressor – 5-year parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical table also repeats this ten-year compressor and five-year parts coverage. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe therefore recommend confirming the warranty conditions applicable to the exact combination and the registration terms in effect at the time of purchase.\u003c\/p\u003e\n\u003ch3\u003eWho do we particularly recommend a 9,000 BTU Senville ducted system for?\u003c\/h3\u003e\n\u003cp\u003eThis configuration may be particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea \u003cstrong\u003eprimary bedroom with an adjoining bathroom\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003etwo small adjacent rooms;\u003c\/li\u003e\n\u003cli\u003ean office and a bedroom;\u003c\/li\u003e\n\u003cli\u003ea small condo;\u003c\/li\u003e\n\u003cli\u003ean addition;\u003c\/li\u003e\n\u003cli\u003ea space where the walls must remain clear;\u003c\/li\u003e\n\u003cli\u003ea project where the appearance of a wall-mounted head is undesirable;\u003c\/li\u003e\n\u003cli\u003ea suspended ceiling or soffit that can conceal the unit;\u003c\/li\u003e\n\u003cli\u003ea small area requiring independent control;\u003c\/li\u003e\n\u003cli\u003ea project seeking a \u003cstrong\u003ecold-climate ENERGY STAR heat pump\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is less suitable for an entire large house when the homeowner wants to connect it to an extensive central duct system.\u003c\/p\u003e\n\u003ch3\u003eWhy 9,000 BTU may be exactly the right capacity\u003c\/h3\u003e\n\u003cp\u003eWe sometimes see homeowners automatically request 12,000 or 18,000 BTU “to be sure.”\u003c\/p\u003e\n\u003cp\u003eThis reasoning can compromise the result.\u003c\/p\u003e\n\u003cp\u003eA properly sized heat pump is more likely to operate for longer periods at low output, maintain a stable temperature, and manage humidity in the summer.\u003c\/p\u003e\n\u003cp\u003eIn a well-insulated small area in \u003cstrong\u003eBoucherville, Laval, or Montréal\u003c\/strong\u003e, 9,000 BTU may be much more appropriate than a significantly larger model.\u003c\/p\u003e\n\u003cp\u003eThe right capacity always depends on the actual heat losses and gains.\u003c\/p\u003e\n\u003ch3\u003eWhat we check before recommending this model at AirGreen\u003c\/h3\u003e\n\u003cp\u003eBefore confirming an installation, we want to know:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe actual area to be served;\u003c\/li\u003e\n\u003cli\u003ethe insulation;\u003c\/li\u003e\n\u003cli\u003ethe windows;\u003c\/li\u003e\n\u003cli\u003ethe thermal behavior of the rooms;\u003c\/li\u003e\n\u003cli\u003ethe space available for the indoor unit;\u003c\/li\u003e\n\u003cli\u003ethe ductwork layout;\u003c\/li\u003e\n\u003cli\u003ethe return grille location;\u003c\/li\u003e\n\u003cli\u003ehow the condensate will be drained;\u003c\/li\u003e\n\u003cli\u003ethe length of the refrigerant lines;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit location;\u003c\/li\u003e\n\u003cli\u003ethe available electrical circuit;\u003c\/li\u003e\n\u003cli\u003efuture accessibility for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis step is particularly important with a \u003cstrong\u003educted system\u003c\/strong\u003e, because much of the installation disappears once the ceiling is closed.\u003c\/p\u003e\n\u003ch3\u003eA compact heat pump that prioritizes integration over visibility\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 9,000 BTU ducted heat pump\u003c\/strong\u003e combines a \u003cstrong\u003eSEER2 of 21.4\u003c\/strong\u003e, an \u003cstrong\u003eHSPF2 of 12.5\u003c\/strong\u003e, an airflow of approximately \u003cstrong\u003e400 CFM\u003c\/strong\u003e, an indoor unit measuring only \u003cstrong\u003e7.87 in. in height\u003c\/strong\u003e, and heating operation down to \u003cstrong\u003e-30°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts main appeal, however, is architectural and functional: \u003cstrong\u003eto provide the comfort of a heat pump without necessarily installing a visible wall-mounted head in the room\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a small area in \u003cstrong\u003eMontréal, Laval, Longueuil, the North Shore, the South Shore, or Montérégie\u003c\/strong\u003e, this solution can be extremely suitable when the ductwork is properly designed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen for a quote on the SENVILLE SENA R454B 9,000 BTU ducted heat pump. We can assess the heating load, ductwork, grilles, return air, drainage, electrical system, refrigerant lines, and unit locations before the work begins.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120199479588,"sku":"SENA-09HF-OG","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_GAINABLE_SENVILLE_SENA_R454B_9000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789067142"},{"product_id":"thermopompe-gainable-senville-sena-r454b-12000-btu","title":"Ducted Heat Pump SENVILLE SENA R454B | 12000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eA compact ducted heat pump for integrating heating and cooling without a visible wall-mounted unit\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e12,000 BTU ducted heat pump\u003c\/strong\u003e meets a very specific need: achieving the comfort of a traditional ductless system while concealing the indoor unit in a ceiling, soffit or mechanical space and distributing air through short duct sections and discreet grilles.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 12,000 BTU\u003c\/strong\u003e, consisting of the \u003cstrong\u003eSENA-12HF-OG\u003c\/strong\u003e outdoor unit and the \u003cstrong\u003eSENA-12HF-IDG\u003c\/strong\u003e ducted indoor unit, is a particularly appealing option for certain renovations in \u003cstrong\u003eMontreal, Laval, Longueuil, the North Shore and the South Shore\u003c\/strong\u003e. It may be suitable for a bedroom suite, a floor, an office, a condo or a specific portion of a home where avoiding multiple wall-mounted units is desirable.\u003c\/p\u003e\n\u003cp\u003eSenville documentation presents this family as a \u003cstrong\u003eConcealed Duct\u003c\/strong\u003e system, that is, a mini-split heat pump with a concealed, ducted indoor unit. The 12,000 BTU product is explicitly identified as the \u003cstrong\u003eSENA\/12HF\/ID\u003c\/strong\u003e, ENERGY STAR certified and designed for heating and cooling. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the AirGreen configuration, the main specifications are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-12HF-OG\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIndoor unit: SENA-12HF-IDG\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCooling capacity: 12,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735301\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR reference: 3630048\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 20.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold climate: yes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeating down to -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWi-Fi: optional\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\u003eMaximum airflow: approximately 401 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePiping: 1\/4 in – 3\/8 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIndoor unit dimensions: 27.56 × 19.92 × 7.87 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit dimensions: 31.69 × 12.99 × 21.81 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\u003eProvincial rebate indicated: $1,152\u003c\/strong\u003e, subject to the applicable eligibility conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDucted does not mean a traditional central system\u003c\/h3\u003e\n\u003cp\u003eThe distinction is important.\u003c\/p\u003e\n\u003cp\u003eA central heat pump generally uses a larger air handler connected to a duct network distributed throughout much of the home. A \u003cstrong\u003ecompact ducted heat pump\u003c\/strong\u003e like the SENA-12HF-IDG works more like a mini-split heat pump with a concealed indoor unit.\u003c\/p\u003e\n\u003cp\u003eIt can supply one or more grilles through a small duct network.\u003c\/p\u003e\n\u003cp\u003eThis configuration may be worthwhile when we want to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eserve two or three adjacent rooms;\u003c\/li\u003e\n\u003cli\u003ecompletely conceal the indoor unit;\u003c\/li\u003e\n\u003cli\u003ekeep the walls clear;\u003c\/li\u003e\n\u003cli\u003eintegrate air conditioning into a renovation;\u003c\/li\u003e\n\u003cli\u003econdition an entire floor without redoing the HVAC system for the whole house;\u003c\/li\u003e\n\u003cli\u003eimprove the comfort of a particular area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA ducted system can therefore provide a more discreet finish than a wall-mounted head while remaining much more compact than a traditional central system.\u003c\/p\u003e\n\u003ch3\u003eOnly 7.87 inches high for the indoor unit\u003c\/h3\u003e\n\u003cp\u003eOne of the most interesting figures in the technical specifications is the height of the indoor unit.\u003c\/p\u003e\n\u003cp\u003eIt measures:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e27.56 in × 19.92 in × 7.87 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs approximately \u003cstrong\u003e39.46 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA height of less than eight inches makes it possible to consider installations that would be impossible with a traditional central air handler.\u003c\/p\u003e\n\u003cp\u003eDepending on the structure, we can, for example, integrate the unit into:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea soffit;\u003c\/li\u003e\n\u003cli\u003ea drop ceiling;\u003c\/li\u003e\n\u003cli\u003ea space above a hallway;\u003c\/li\u003e\n\u003cli\u003ean accessible portion of an attic crawl space;\u003c\/li\u003e\n\u003cli\u003ea compact mechanical space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBut these dimensions do not mean that 7.87 inches of clearance is actually sufficient.\u003c\/p\u003e\n\u003cp\u003eThe following must also be planned for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe ducts;\u003c\/li\u003e\n\u003cli\u003ethe insulation;\u003c\/li\u003e\n\u003cli\u003ethe drain;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant connections;\u003c\/li\u003e\n\u003cli\u003ethe wiring;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003ereplacing or cleaning the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore always check the available space before confirming that a ducted installation is feasible.\u003c\/p\u003e\n\u003ch3\u003e400 CFM: the duct network must be designed around the available airflow\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates four indoor airflow levels:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e400.2 CFM in Turbo mode\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e323.7 CFM at high speed\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e264.9 CFM at medium speed\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e176.6 CFM at low speed\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003e401 CFM\u003c\/strong\u003e figure used on the AirGreen product sheet therefore corresponds very closely to Senville’s published maximum airflow.\u003c\/p\u003e\n\u003cp\u003eThis figure is particularly important with a ducted unit.\u003c\/p\u003e\n\u003cp\u003eA wall-mounted head blows directly into a room. A ducted unit must move its air through:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea return section;\u003c\/li\u003e\n\u003cli\u003ethe filter;\u003c\/li\u003e\n\u003cli\u003ethe coil;\u003c\/li\u003e\n\u003cli\u003ethe plenum;\u003c\/li\u003e\n\u003cli\u003ethe ducts;\u003c\/li\u003e\n\u003cli\u003ethe grilles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery elbow, restriction, or undersized duct creates resistance.\u003c\/p\u003e\n\u003cp\u003eThis is one of the reasons we avoid turning a small ducted unit into a pseudo-central system serving an excessively long network. The product must be used in the type of configuration for which its capacity and airflow are suited.\u003c\/p\u003e\n\u003ch3\u003eAn example of a configuration where a ducted system becomes particularly practical\u003c\/h3\u003e\n\u003cp\u003eLet’s consider a house in \u003cstrong\u003eLongueuil\u003c\/strong\u003e where three small bedrooms are located on the same floor.\u003c\/p\u003e\n\u003cp\u003eThe owner does not want to install three wall-mounted heads. A single wall-mounted unit in the hallway is not an ideal solution either, since the bedroom doors are often closed.\u003c\/p\u003e\n\u003cp\u003eA properly sized ducted unit can allow for the placement of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea supply grille in each bedroom;\u003c\/li\u003e\n\u003cli\u003ea suitable return-air system;\u003c\/li\u003e\n\u003cli\u003ethe indoor unit in the corridor ceiling or in an adjacent space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe result is much more discreet, and air distribution does not depend on leaving the doors open.\u003c\/p\u003e\n\u003cp\u003eHowever, the combined heating load of the rooms must be verified. The available \u003cstrong\u003e12,000 BTU\u003c\/strong\u003e must correspond to the entire served area.\u003c\/p\u003e\n\u003ch3\u003eA capacity that modulates from 3,400 to 13,500 BTU in cooling mode\u003c\/h3\u003e\n\u003cp\u003eThe Senville technical data sheet indicates a nominal cooling capacity of \u003cstrong\u003e12,000 BTU\u003c\/strong\u003e, with a modulation range of \u003cstrong\u003e3,400 to 13,500 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis range is important for comfort.\u003c\/p\u003e\n\u003cp\u003eDuring a relatively mild day, the system does not need to constantly produce 12,000 BTU. Inverter technology can reduce its output to better match demand.\u003c\/p\u003e\n\u003cp\u003eThis generally allows for longer, more consistent operating periods rather than a succession of starts and stops at full capacity.\u003c\/p\u003e\n\u003cp\u003eIn heating mode, the brochure indicates a nominal capacity of \u003cstrong\u003e12,500 BTU\/h\u003c\/strong\u003e, with an operating range from \u003cstrong\u003e3,800 to 16,200 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e20 SEER2, an EER2 of 12, and an HSPF2 of 10\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE ducted system offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 20\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 4: 10\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 Region 5: 8\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal COP: 3.39 W\/W\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\u003eFor a homeowner comparing several \u003cstrong\u003educted heat pumps in Montreal or Laval\u003c\/strong\u003e, SEER2 provides a good reference for seasonal cooling efficiency.\u003c\/p\u003e\n\u003cp\u003eHSPF2 tells us more about seasonal heating performance.\u003c\/p\u003e\n\u003cp\u003eThe nominal COP of 3.39 means that, under the corresponding test condition, the system transfers approximately 3.39 units of thermal energy for each unit of electrical energy used by the heat pump cycle.\u003c\/p\u003e\n\u003cp\u003eHowever, this COP should not be applied to all outdoor temperatures.\u003c\/p\u003e\n\u003ch3\u003eAt -8 °C: approximately 9,600 BTU with a COP of 2.49\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data provided for this configuration indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAt -8 °C:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecapacity: \u003cstrong\u003e9,600 BTU\/h\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCOP: \u003cstrong\u003e2,49\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a small ducted area, this capacity can still cover a significant portion of the heating load if the building envelope performs well.\u003c\/p\u003e\n\u003cp\u003eIn an older home or an area with a lot of glazing, the result may be different.\u003c\/p\u003e\n\u003cp\u003eThis is why we do not select a 12,000 BTU heat pump based solely on floor area.\u003c\/p\u003e\n\u003ch3\u003eAt -15 °C: the AirGreen data indicates 11,800 BTU\u003c\/h3\u003e\n\u003cp\u003eThe supplied AirGreen data sheet indicates \u003cstrong\u003e11,800 BTU\/h at -15 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis value is higher than the 9,600 BTU figure given at -8 °C. The attached brochure does not provide these two low-temperature performance points, so it does not allow this progression to be confirmed directly.\u003c\/p\u003e\n\u003cp\u003eFor an accurate heat-loss calculation or to compare this model with a competitor, we therefore recommend verifying the exact capacities at -8 °C and -15 °C using \u003cstrong\u003eAHRI match 215735301\u003c\/strong\u003e or the performance table corresponding to this revision.\u003c\/p\u003e\n\u003cp\u003eThis detail is particularly important when determining whether the heat pump can handle a zone’s load on its own for much of the winter.\u003c\/p\u003e\n\u003ch3\u003eOperation down to -30 °C\u003c\/h3\u003e\n\u003cp\u003eThe Senville brochure clearly indicates heating operation down to \u003cstrong\u003e-22 °F, or -30 °C\u003c\/strong\u003e, and presents the unit as a cold-climate heat pump. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet gives, at this limit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e6,400 BTU\/h\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP: 1.28\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it immediately possible to understand the difference between two commonly confused concepts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe system can operate down to -30 °C, but it does not necessarily produce 12,000 BTU at -30 °C.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIts capacity listed in the AirGreen data is therefore approximately 6,400 BTU\/h.\u003c\/p\u003e\n\u003cp\u003eFor a small, well-insulated area, this may remain useful. For an area with heat losses greater than this capacity, supplemental heating will be necessary during the most severe cold spells.\u003c\/p\u003e\n\u003ch3\u003eWhy the ducted format can improve comfort in several small rooms\u003c\/h3\u003e\n\u003cp\u003eOne of this product’s main advantages is not found solely in its energy performance.\u003c\/p\u003e\n\u003cp\u003eIts ability to distribute air to multiple locations.\u003c\/p\u003e\n\u003cp\u003eA 12,000 BTU wall-mounted head can easily heat a large open area, but its air has difficulty passing through several closed doors.\u003c\/p\u003e\n\u003cp\u003eWith a ducted unit, we can divide the airflow among several grilles.\u003c\/p\u003e\n\u003cp\u003eA configuration could, for example, include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003etwo bedrooms, each with a grille;\u003c\/li\u003e\n\u003cli\u003ea small office and a bedroom;\u003c\/li\u003e\n\u003cli\u003ea primary bedroom with a better-positioned supply grille;\u003c\/li\u003e\n\u003cli\u003ea small residential area divided into several zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDuct sizing then becomes central.\u003c\/p\u003e\n\u003ch3\u003eThe static pressure must be checked in the installation manual\u003c\/h3\u003e\n\u003cp\u003eThe provided brochure gives the airflow, but the available excerpts do not specify the \u003cstrong\u003eallowable external static pressure\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWe therefore avoid inventing a value.\u003c\/p\u003e\n\u003cp\u003eBefore designing a duct system, you must check the applicable manual:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eavailable static pressure;\u003c\/li\u003e\n\u003cli\u003efan speeds;\u003c\/li\u003e\n\u003cli\u003eductwork limits;\u003c\/li\u003e\n\u003cli\u003ethe permitted settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is particularly important for a \u003cstrong\u003educted heat pump installation\u003c\/strong\u003e, as an overly restrictive duct network could reduce the actual airflow at the grilles.\u003c\/p\u003e\n\u003ch3\u003eAn indoor unit rated between 32.5 and 36 dB in the brochure\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e36 dB at high speed\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e34.5 dB at medium speed\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e32.5 dB at low speed\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe AirGreen data provided, for its part, indicates \u003cstrong\u003e29,5 \/ 41 dB\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSince the two series do not correspond exactly and the brochure clearly presents the three H\/M\/L speeds, we recommend validating the final data for the exact matched system before publishing a single value.\u003c\/p\u003e\n\u003cp\u003eIn practice, the perceived noise from a ducted system also depends heavily on the ductwork and grilles.\u003c\/p\u003e\n\u003cp\u003eA grille that is too small can create more aerodynamic noise than the unit itself.\u003c\/p\u003e\n\u003ch3\u003eOutdoor sound level: the brochure indicates 56 dB\u003c\/h3\u003e\n\u003cp\u003eAnother discrepancy should be clearly noted.\u003c\/p\u003e\n\u003cp\u003eThe AirGreen sheet provided lists a value of \u003cstrong\u003e“Sound (Ext) 575.0”\u003c\/strong\u003e, while the Senville documentation indicates \u003cstrong\u003e56 dB\u003c\/strong\u003e for the outdoor unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the technical presentation of this product, the value of \u003cstrong\u003e56 dB\u003c\/strong\u003e is the one shown in the attached brochure. The website data should therefore be verified before final publication.\u003c\/p\u003e\n\u003cp\u003eThis type of validation is important for maintaining an accurate and consistent product listing.\u003c\/p\u003e\n\u003ch2\u003eAirGreen installation: ductwork, drainage, R-454B, and service access determine the outcome just as much as the heat pump itself\u003c\/h2\u003e\n\u003ch3\u003eR-454B is confirmed in the documentation for this version\u003c\/h3\u003e\n\u003cp\u003eUnlike some older generations of heat pumps, the documentation provided for this ducted SENA clearly indicates \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSenville specifies that the system is \u003cstrong\u003eprecharged for up to 25 feet of piping\u003c\/strong\u003e and that the 50-foot kit requires an additional charge to be added on site by the installer. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe technical data sheet also indicates a refrigerant charge of \u003cstrong\u003e35.27 oz\u003c\/strong\u003e and confirms a \u003cstrong\u003e25 ft\u003c\/strong\u003e precharge. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOn site, this means that the actual line length must be measured before commissioning.\u003c\/p\u003e\n\u003ch3\u003e1\/4 in. – 3\/8 in. piping\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen configuration indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1\/4 in. for the liquid line\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\/8 in. for the gas line\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese dimensions are consistent with a heat pump of this capacity.\u003c\/p\u003e\n\u003cp\u003eWhen replacing a system, we do not automatically reuse old piping simply because it is already in the wall or ceiling.\u003c\/p\u003e\n\u003cp\u003eWe check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe diameter;\u003c\/li\u003e\n\u003cli\u003ethe condition;\u003c\/li\u003e\n\u003cli\u003ethe length;\u003c\/li\u003e\n\u003cli\u003ethe type of previous refrigerant;\u003c\/li\u003e\n\u003cli\u003ethe manufacturer’s requirements;\u003c\/li\u003e\n\u003cli\u003ethe feasibility of compliant commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompact outdoor unit: 31.69 × 12.99 × 21.81 inches\u003c\/h3\u003e\n\u003cp\u003eThe brochure confirms outdoor dimensions of \u003cstrong\u003e31.69 × 12.99 × 21.81 in\u003c\/strong\u003e, with a weight of approximately \u003cstrong\u003e72.75 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis format is well suited to urban environments.\u003c\/p\u003e\n\u003cp\u003eIn \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e, the side space may be limited by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea fence;\u003c\/li\u003e\n\u003cli\u003ea basement window;\u003c\/li\u003e\n\u003cli\u003ea passageway;\u003c\/li\u003e\n\u003cli\u003ea deck;\u003c\/li\u003e\n\u003cli\u003ethe neighboring property.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA relatively compact unit offers more possibilities, but air clearances and service access must always be respected.\u003c\/p\u003e\n\u003ch3\u003eDrainage deserves as much attention as the air ducts\u003c\/h3\u003e\n\u003cp\u003eThe ducted indoor unit produces condensation in cooling mode.\u003c\/p\u003e\n\u003cp\u003eSince it is often hidden in the ceiling or a soffit, a leak may be much less visible at first than with a wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eWe therefore plan:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe drain route;\u003c\/li\u003e\n\u003cli\u003ethe slope;\u003c\/li\u003e\n\u003cli\u003ethe discharge point;\u003c\/li\u003e\n\u003cli\u003eprotection against backflow;\u003c\/li\u003e\n\u003cli\u003efuture access;\u003c\/li\u003e\n\u003cli\u003ethe possible need for a pump.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eA system that is perfectly installed from a refrigeration standpoint can still become problematic if the drainage was improvised.\u003c\/p\u003e\n\u003ch3\u003eThe return air must remain accessible\u003c\/h3\u003e\n\u003cp\u003eAnother mistake is hiding the ducted unit so thoroughly that accessing the filter or appliance becomes difficult.\u003c\/p\u003e\n\u003cp\u003eInstead, we seek a balance between discretion and serviceability.\u003c\/p\u003e\n\u003cp\u003eThe homeowner must be able to service the filter, and a technician must be able to access the unit without opening a large section of the ceiling for every service visit.\u003c\/p\u003e\n\u003cp\u003eThis question must be settled before the walls or soffit are closed.\u003c\/p\u003e\n\u003ch3\u003eWired thermostat and Alexa compatibility indicated in the brochure\u003c\/h3\u003e\n\u003cp\u003eThe technical documentation specifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ethermostat type: wired control\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlexa: enabled\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe AirGreen specifications also mention \u003cstrong\u003eoptional Wi-Fi\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor a ducted system, a wall-mounted controller often makes particular sense since the indoor unit itself is hidden.\u003c\/p\u003e\n\u003cp\u003eThe thermostat then becomes the main point of interaction with the system.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and AHRI number 215735301\u003c\/h3\u003e\n\u003cp\u003eSenville indicates that the SENA-12HF\/ID is \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e-certified, with an efficiency rating of 20 SEER2 and operation down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen configuration specifies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735301\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR: 3630048\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese references are important when a financial assistance program requires a specific equipment pairing.\u003c\/p\u003e\n\u003ch3\u003eProvincial rebate listed at $1,152\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet associates this configuration with a \u003cstrong\u003e$1,152 provincial rebate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAs with any financial assistance, this amount must be considered according to the rules applicable to the actual project.\u003c\/p\u003e\n\u003cp\u003eEligibility may depend on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe building;\u003c\/li\u003e\n\u003cli\u003ethe exact equipment combination;\u003c\/li\u003e\n\u003cli\u003ethe AHRI number;\u003c\/li\u003e\n\u003cli\u003ethe program in effect;\u003c\/li\u003e\n\u003cli\u003ethe documents provided;\u003c\/li\u003e\n\u003cli\u003ethe installation date and location.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt AirGreen, we recommend confirming these details before calculating the final net cost of the heat pump.\u003c\/p\u003e\n\u003ch3\u003eWarranty: a difference between the AirGreen product sheet and the brochure\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product sheet indicates a \u003cstrong\u003e10-10-0 manufacturer’s warranty\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eThe Senville brochure states:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e10 years on the compressor\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 years on parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe technical sheet also repeats this 10-year compressor \/ 5-year parts coverage. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe documentation also specifies that professional installation is required to maintain the expected coverage and performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWe therefore always confirm the exact conditions applicable to the product actually sold.\u003c\/p\u003e\n\u003ch3\u003eBuilt-in diagnostics and leak detection\u003c\/h3\u003e\n\u003cp\u003eSenville mentions the following features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eautomatic diagnostics\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eleak detection\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003emaintenance alerts. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese features can help identify certain issues more quickly.\u003c\/p\u003e\n\u003cp\u003eHowever, they do not replace a complete HVAC diagnosis.\u003c\/p\u003e\n\u003cp\u003eA comfort issue may be caused by the refrigerant, but also by a dirty filter, a restrictive duct, a thermostat, a drain, or an improperly balanced system.\u003c\/p\u003e\n\u003ch3\u003eWhy we particularly like ducted systems in certain renovations\u003c\/h3\u003e\n\u003cp\u003eA successful ducted installation can give the impression that there is practically no heating or cooling equipment in the room.\u003c\/p\u003e\n\u003cp\u003eThe customer mainly sees:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe grilles;\u003c\/li\u003e\n\u003cli\u003ethe thermostat;\u003c\/li\u003e\n\u003cli\u003ea stable temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is precisely the desired result in several renovations where aesthetics matter.\u003c\/p\u003e\n\u003cp\u003eHowever, this discreet design requires more technical preparation.\u003c\/p\u003e\n\u003cp\u003eWe must coordinate the work with the ceiling structure, ductwork, drainage, and service access. The system becomes nearly invisible after the work is complete, but its installation must never be treated as an afterthought.\u003c\/p\u003e\n\u003ch3\u003eWho is the SENVILLE SENA 12,000 BTU ducted system particularly suitable for?\u003c\/h3\u003e\n\u003cp\u003eThis configuration may be suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea floor comprising several small rooms;\u003c\/li\u003e\n\u003cli\u003ea primary bedroom with a bathroom or adjacent space;\u003c\/li\u003e\n\u003cli\u003ea condo;\u003c\/li\u003e\n\u003cli\u003ean office;\u003c\/li\u003e\n\u003cli\u003ea basement suite;\u003c\/li\u003e\n\u003cli\u003ea small commercial area;\u003c\/li\u003e\n\u003cli\u003ea project where no wall-mounted head is desired.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt combines several interesting features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e12,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e20 SEER2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2 of 10\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eoperation down to \u003cstrong\u003e-30°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e401 CFM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ean indoor unit only \u003cstrong\u003e7.87 inches high\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification\n\u003c\/li\u003e\n\u003cli\u003eOptional Wi-Fi\u003c\/li\u003e\n\u003cli\u003epossibility of a financial incentive of \u003cstrong\u003e1 152 $\u003c\/strong\u003e, subject to eligibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen a wall-mounted unit may make more sense\u003c\/h3\u003e\n\u003cp\u003eA ducted system is not automatically preferable.\u003c\/p\u003e\n\u003cp\u003eA wall-mounted unit may be a better choice when you want:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea simpler installation;\u003c\/li\u003e\n\u003cli\u003efewer ducts;\u003c\/li\u003e\n\u003cli\u003eimmediate access to the filters;\u003c\/li\u003e\n\u003cli\u003ea direct drain;\u003c\/li\u003e\n\u003cli\u003ea lower installation cost;\u003c\/li\u003e\n\u003cli\u003eto condition a single large open room.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe recommend a ducted system when its architectural advantages and air distribution provide real value to the project.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a ducted installation\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen Climatisation \u0026amp; Chauffage\u003c\/strong\u003e, we approach this type of system as a true air distribution project.\u003c\/p\u003e\n\u003cp\u003eWe check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe 12,000 BTU capacity in relation to the load;\u003c\/li\u003e\n\u003cli\u003ethe available \u003cstrong\u003e401 CFM\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003enumber of grilles;\u003c\/li\u003e\n\u003cli\u003educt length;\u003c\/li\u003e\n\u003cli\u003eair returns;\u003c\/li\u003e\n\u003cli\u003eceiling space;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003ethe R-454B piping;\u003c\/li\u003e\n\u003cli\u003ethe electrical supply;\u003c\/li\u003e\n\u003cli\u003eaccess for maintenance;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit;\u003c\/li\u003e\n\u003cli\u003ethe control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is this coordination that allows a \u003cstrong\u003educted heat pump in Montréal, Laval, Longueuil, on the North Shore or South Shore\u003c\/strong\u003e to deliver the desired comfort without creating a duct network that is too restrictive or difficult to maintain.\u003c\/p\u003e\n\u003ch3\u003eRequest an AirGreen quote for the 12,000 BTU SENVILLE SENA Ducted\u003c\/h3\u003e\n\u003cp\u003eAre you considering a \u003cstrong\u003e12,000 BTU SENVILLE SENA R454B ducted heat pump\u003c\/strong\u003e for a bedroom, floor, condo, suite, or commercial space?\u003c\/p\u003e\n\u003cp\u003eContact \u003cstrong\u003eAirGreen\u003c\/strong\u003e for a technical assessment. We can verify sizing, available space, duct distribution, drainage, electrical supply, refrigerant line routing, and eligibility for financial incentives.\u003c\/p\u003e\n\u003cp\u003eWe install and maintain \u003cstrong\u003educted heat pumps in Montréal, Laval, Longueuil, on the North Shore, South Shore, and in Montérégie\u003c\/strong\u003e, with particular attention to airflow, architectural integration, and winter operation.\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120199512356,"sku":"SENA-12HF-OG","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_GAINABLE_SENVILLE_SENA_R454B_12000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789067150"},{"product_id":"thermopompe-gainable-senville-sena-r454b-18000-btu","title":"Ducted Heat Pump SENVILLE SENA R454B | 18000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eAn 18,000 BTU ducted heat pump that disappears into the ceiling while maintaining genuine winter performance down to -30 °C\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003educted heat pump\u003c\/strong\u003e meets a very different need from a wall-mounted unit. The goal is not merely to heat and cool: it is also to preserve the interior architecture by almost completely concealing the equipment. In a well-designed installation, only the supply grilles, return grille, and wall control remain visible.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 18,000 BTU\u003c\/strong\u003e, with \u003cstrong\u003eSENA-18HF-OG\u003c\/strong\u003e outdoors and \u003cstrong\u003eSENA-18HF-IDG\u003c\/strong\u003e indoors, is specifically designed according to this logic. Senville documentation describes the system as a \u003cstrong\u003econcealed 18,000 BTU ducted mini-split with a heat pump\u003c\/strong\u003e, intended for heating and air conditioning. \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 interesting in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e when a homeowner wants to avoid several visible wall-mounted units while air-conditioning one or more nearby rooms with the help of a small duct network.\u003c\/p\u003e\n\u003cp\u003eThe combination published on the AirGreen listing includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOutdoor unit: SENA-18HF-OG\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDucted indoor unit: SENA-18HF-IDG\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAHRI: 215735302\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\u003eENERGY STAR ID: 3630049\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommercial capacity: 18,000 BTU\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant: R-454B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2: 18.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2: 10.5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiFi: optional\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower supply: 220 V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePiping: 1\/4 in – 1\/2 in\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eadvertised heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e$1,800 in advertised provincial rebates\u003c\/strong\u003e on the AirGreen listing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe manufacturer’s brochure confirms an \u003cstrong\u003eSEER2 of 18\u003c\/strong\u003e, an \u003cstrong\u003eEER2 of 12\u003c\/strong\u003e, an \u003cstrong\u003eHSPF2-4 of 10.5\u003c\/strong\u003e, and a rated COP of \u003cstrong\u003e3.37\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThe main advantage of a ducted system: distributed comfort without a visible wall-mounted head\u003c\/h3\u003e\n\u003cp\u003eThe indoor unit measures only approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e34.65 in × 26.54 in × 8.27 in\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts height of only \u003cstrong\u003e8.27 inches\u003c\/strong\u003e is particularly useful when the system must be integrated into a dropped ceiling, soffit, interstitial ceiling space, or relatively low mechanical area. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis design distributes air through short ducts to several grilles.\u003c\/p\u003e\n\u003cp\u003eA typical project might include, for example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ean outlet in a primary bedroom;\u003c\/li\u003e\n\u003cli\u003ea second outlet in an adjacent office;\u003c\/li\u003e\n\u003cli\u003ea discreet return grille in the corridor or in a central area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn this case, the owner gets more integrated air distribution than with two separate wall-mounted heads.\u003c\/p\u003e\n\u003ch3\u003eDucted does not mean a complete central system\u003c\/h3\u003e\n\u003cp\u003eThis is an important distinction.\u003c\/p\u003e\n\u003cp\u003eAn \u003cstrong\u003e18,000 BTU ducted heat pump\u003c\/strong\u003e is not necessarily designed to supply a large duct network serving an entire house like a traditional air-handling unit.\u003c\/p\u003e\n\u003cp\u003eIt is better suited to a compact, properly sized duct network.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we therefore examine:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe length of the ducts;\u003c\/li\u003e\n\u003cli\u003etheir diameter;\u003c\/li\u003e\n\u003cli\u003eelbows;\u003c\/li\u003e\n\u003cli\u003ethe number of outlets;\u003c\/li\u003e\n\u003cli\u003estatic pressure;\u003c\/li\u003e\n\u003cli\u003ethe size of the return grille.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA poor duct network can compromise performance even if the heat pump itself is excellent.\u003c\/p\u003e\n\u003ch3\u003eUp to 600 CFM: the duct network must be designed around the actual airflow\u003c\/h3\u003e\n\u003cp\u003eThe Senville brochure provides the following indoor airflow rates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTurbo: 600.4 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh speed: 559.2 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMedium speed: 500.3 CFM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow speed: 441.4 CFM\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis means that the system must be able to move several hundred cubic feet of air per minute without creating excessive pressure.\u003c\/p\u003e\n\u003cp\u003eA grille that is too small or unnecessarily narrow ducts can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emore noise;\u003c\/li\u003e\n\u003cli\u003elower airflow at the outlets;\u003c\/li\u003e\n\u003cli\u003euneven distribution;\u003c\/li\u003e\n\u003cli\u003ea loss of comfort;\u003c\/li\u003e\n\u003cli\u003eless efficient operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn our \u003cstrong\u003eHVAC projects in Montreal, Laval, and Longueuil\u003c\/strong\u003e, we often see that the success of a ducted system depends as much on the ventilation network as on the heat pump itself.\u003c\/p\u003e\n\u003ch3\u003e32 to 40 dB(A) according to the brochure: suitable for a concealed unit\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer's documentation indicates an indoor sound level of:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e40 \/ 39 \/ 38 \/ 32 dB(A)\u003c\/strong\u003e depending on the speed. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specifications currently state approximately \u003cstrong\u003e29.5 to 40 dB(A)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn any case, the ducted design provides an additional acoustic advantage: the unit itself is installed away from the occupied area or behind a finish.\u003c\/p\u003e\n\u003cp\u003eHowever, perceived noise depends heavily on the installation.\u003c\/p\u003e\n\u003cp\u003eA supply vent that is too small can produce more noise than an otherwise very quiet indoor unit.\u003c\/p\u003e\n\u003ch3\u003eAn 18,000 BTU commercial capacity with inverter modulation\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a nominal cooling capacity of \u003cstrong\u003e17,000 BTU\/h\u003c\/strong\u003e, with a modulation range from \u003cstrong\u003e6,500 to 18,800 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn heating mode, it indicates a nominal capacity of \u003cstrong\u003e19,000 BTU\/h\u003c\/strong\u003e, with a range from \u003cstrong\u003e8,900 to 22,000 BTU\/h\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe commercial designation \u003cstrong\u003e18,000 BTU\u003c\/strong\u003e therefore corresponds to the system category, but its actual performance varies depending on the operating mode and load.\u003c\/p\u003e\n\u003cp\u003eThis inverter modulation is particularly well suited to a ducted unit.\u003c\/p\u003e\n\u003cp\u003eWhen the setpoint temperature is nearly reached, the system can reduce its output rather than constantly operating at full capacity.\u003c\/p\u003e\n\u003ch3\u003eWhy this modulation is important in a bedroom or office\u003c\/h3\u003e\n\u003cp\u003eAn overly aggressive system can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eshort cycles;\u003c\/li\u003e\n\u003cli\u003etemperature fluctuations;\u003c\/li\u003e\n\u003cli\u003ean overly noticeable airflow;\u003c\/li\u003e\n\u003cli\u003eintermittent noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA properly sized variable-capacity unit, on the other hand, can operate more gradually.\u003c\/p\u003e\n\u003cp\u003eComfort then becomes more stable, especially when the duct network is properly balanced.\u003c\/p\u003e\n\u003ch3\u003eHeating at -8 °C, -15 °C, and -30 °C: what the AirGreen data sheet actually indicates\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet provides very useful figures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e15,000 BTU\/h at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e18,000 BTU\/h at -15 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e9,000 BTU\/h maximum at -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe indicated COP is approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2.7 at -8 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1.51 at the maximum point at -30 °C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure confirms that the system can operate 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\u003eThis distinction is essential.\u003c\/p\u003e\n\u003cp\u003eThe heat pump can continue heating at -30 °C, but that does not mean it retains 18,000 BTU at that temperature.\u003c\/p\u003e\n\u003ch3\u003eAt -15 °C, the capacity remains particularly impressive\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen data sheet indicates \u003cstrong\u003e18,000 BTU\/h at -15 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor the climate of \u003cstrong\u003eGreater Montréal\u003c\/strong\u003e, this figure is often more important than the performance observed at -30 °C, since the heat pump can provide a significant portion of the heating for much of the winter.\u003c\/p\u003e\n\u003cp\u003eIf the space requires less than 18,000 BTU\/h at -15 °C, the unit can still handle a large portion of the load.\u003c\/p\u003e\n\u003cp\u003eAt -30 °C, with approximately \u003cstrong\u003e9,000 BTU\/h maximum\u003c\/strong\u003e, a supplementary heat source may nevertheless be required depending on the building's heat loss.\u003c\/p\u003e\n\u003ch2\u003eInstallation, ductwork, R-454B, and controls: the technical details that make all the difference in a ducted system\u003c\/h2\u003e\n\u003ch3\u003eThe indoor unit must remain accessible after the work is complete\u003c\/h3\u003e\n\u003cp\u003eThe ducted system is designed to be hidden, but it must never become inaccessible.\u003c\/p\u003e\n\u003cp\u003eWe must provide access to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe filter;\u003c\/li\u003e\n\u003cli\u003ethe evaporator;\u003c\/li\u003e\n\u003cli\u003ethe drain;\u003c\/li\u003e\n\u003cli\u003ethe electronic control board;\u003c\/li\u003e\n\u003cli\u003ethe fan;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA system completely enclosed behind a finished ceiling without an access hatch can turn a simple maintenance operation into demolition work.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we prefer to integrate access into the design from the outset.\u003c\/p\u003e\n\u003ch3\u003eThe return air is just as important as the outlets\u003c\/h3\u003e\n\u003cp\u003eA ducted system cannot blow properly if it cannot draw in enough air.\u003c\/p\u003e\n\u003cp\u003eWe must size the return grille according to the system's airflow.\u003c\/p\u003e\n\u003cp\u003eWith up to \u003cstrong\u003e600 CFM\u003c\/strong\u003e, the return airflow must be sufficient to prevent:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewhistling;\u003c\/li\u003e\n\u003cli\u003eexcessive pressure;\u003c\/li\u003e\n\u003cli\u003ea reduction in airflow;\u003c\/li\u003e\n\u003cli\u003enoisier operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis step is often overlooked when the focus is solely on the visible supply grilles.\u003c\/p\u003e\n\u003ch3\u003eTwo or three small outlets can be more effective than a single large grille\u003c\/h3\u003e\n\u003cp\u003eDepending on the room layout, we can distribute the air among several outlets.\u003c\/p\u003e\n\u003cp\u003eFor example, in a large bedroom with a walk-in closet and an adjacent bathroom, two outlets can sometimes produce a more even temperature than a single register located at one end.\u003c\/p\u003e\n\u003cp\u003eBut the outlets should not be multiplied arbitrarily.\u003c\/p\u003e\n\u003cp\u003eEach branch adds resistance to the system and changes the available airflow.\u003c\/p\u003e\n\u003ch3\u003eThe 8.27-inch thickness makes several installations easier\u003c\/h3\u003e\n\u003cp\u003eThe indoor unit’s low height is one of its practical advantages.\u003c\/p\u003e\n\u003cp\u003eAt only \u003cstrong\u003e8.27 in\u003c\/strong\u003e, it can fit into certain ceilings where a conventional air handler would be impossible.\u003c\/p\u003e\n\u003cp\u003eHowever, the necessary clearances around the cabinet, the drain, and the connections must be added.\u003c\/p\u003e\n\u003cp\u003eThe figure of 8.27 inches should therefore not be used as the total installation height.\u003c\/p\u003e\n\u003ch3\u003eR-454B with a factory charge for up to 25 feet\u003c\/h3\u003e\n\u003cp\u003eThe SENVILLE uses \u003cstrong\u003eR-454B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe documentation indicates a charge of \u003cstrong\u003e55.38 oz\u003c\/strong\u003e and a factory charge intended for up to \u003cstrong\u003e25 feet\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also specifies that a 50-foot line set requires an on-site charge adjustment. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product page indicates piping:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1\/4 in – 1\/2 in\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDuring a replacement, we must therefore carefully check the size of the existing lines.\u003c\/p\u003e\n\u003ch3\u003eThe refrigerant line routing must be planned at the same time as the duct network\u003c\/h3\u003e\n\u003cp\u003eWith a wall-mounted unit, the refrigerant lines can often exit directly behind the head.\u003c\/p\u003e\n\u003cp\u003eWith a ducted system, the indoor unit can be located much farther from the exterior wall.\u003c\/p\u003e\n\u003cp\u003eThe project must therefore coordinate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erefrigerant lines;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003educts;\u003c\/li\u003e\n\u003cli\u003epower supply;\u003c\/li\u003e\n\u003cli\u003ethermostat;\u003c\/li\u003e\n\u003cli\u003eservice access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is one of the reasons why installing a ducted system requires more planning than a conventional wall-mounted heat pump.\u003c\/p\u003e\n\u003ch3\u003eWired wall control\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates \u003cstrong\u003ewired wall control\u003c\/strong\u003e for this system. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis makes particular sense for a ducted unit, since the indoor unit is not directly accessible or visible.\u003c\/p\u003e\n\u003cp\u003eThe temperature is controlled from the wall, as with a thermostat.\u003c\/p\u003e\n\u003cp\u003eThe documentation also indicates Alexa compatibility, while the AirGreen product page specifies that \u003cstrong\u003eWiFi is optional\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis distinction should be confirmed when ordering if phone control is an important criterion.\u003c\/p\u003e\n\u003ch3\u003eA user review specifically points out the thermostat wiring\u003c\/h3\u003e\n\u003cp\u003eThe brochure contains a verified buyer review dated July 3, 2026, which mentions that \u003cstrong\u003ethe thermostat wiring was not very clear\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis comment highlights a specific point: on a ducted system, the wall control is an integral part of the installation.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we want the wiring, control addressing, and commissioning to be completed before closing the ceilings or access panels.\u003c\/p\u003e\n\u003ch3\u003eElectrical requirements: a discrepancy between the AirGreen product page and the brochure\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product page currently states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 15 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMOP: 15 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Senville brochure, however, indicates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMCA: 19 A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003emaximum fuse: 20 A\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor an actual installation, we must therefore use the data corresponding to \u003cstrong\u003ethe unit actually delivered, its nameplate, and the technical documentation applicable to the exact combination\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis discrepancy should also be verified on the product page before final publication.\u003c\/p\u003e\n\u003ch3\u003eThe outdoor unit is larger than a small 9,000 or 12,000 BTU unit\u003c\/h3\u003e\n\u003cp\u003eThe outdoor dimensions are:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e35.04 in × 13.46 in × 26.50 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003efor a weight of approximately \u003cstrong\u003e99.87 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe brochure indicates an outdoor sound level of \u003cstrong\u003e59 dB(A)\u003c\/strong\u003e, while the AirGreen product page currently shows \u003cstrong\u003e57 dB(A)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAs with ampacity, this difference must be tied to the exact combination and the final technical data sheet used.\u003c\/p\u003e\n\u003ch3\u003eThe outdoor location must take noise and snow into account\u003c\/h3\u003e\n\u003cp\u003eWe check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edistance from bedrooms;\u003c\/li\u003e\n\u003cli\u003ewindows;\u003c\/li\u003e\n\u003cli\u003edeck;\u003c\/li\u003e\n\u003cli\u003eneighbor;\u003c\/li\u003e\n\u003cli\u003eairflow;\u003c\/li\u003e\n\u003cli\u003eheight above the ground;\u003c\/li\u003e\n\u003cli\u003ewinter accumulation;\u003c\/li\u003e\n\u003cli\u003eease of access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn outdoor unit weighing nearly 100 lb also requires a stable support.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and Cold Climate\u003c\/h3\u003e\n\u003cp\u003eThe brochure clearly presents the SENVILLE ducted system as \u003cstrong\u003eENERGY STAR®\u003c\/strong\u003e and capable of providing heating down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen product page also identifies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAHRI 215735302\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eENERGY STAR 3630049\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThese references are particularly important for verifying financial assistance programs.\u003c\/p\u003e\n\u003ch3\u003eDisplayed provincial rebate: $1,800\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product page currently indicates a \u003cstrong\u003e$1,800 provincial rebate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eSince the rules and amounts may change, we always confirm eligibility at the time of quoting.\u003c\/p\u003e\n\u003cp\u003eThe exact \u003cstrong\u003eSENA-18HF-OG + SENA-18HF-IDG\u003c\/strong\u003e combination must be used for this verification.\u003c\/p\u003e\n\u003ch3\u003eWarranty: the brochure and the AirGreen product page do not provide the same coverage\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen product page states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-year compressor – 10-year parts – 0-year labor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ewith a possible additional warranty.\u003c\/p\u003e\n\u003cp\u003eSenville states in the brochure:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-year compressor warranty – 5-year parts warranty\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe same coverage is repeated in the technical table. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIf an extended parts warranty is offered by AirGreen, the distributor or a registration program, it must be confirmed in the terms of sale.\u003c\/p\u003e\n\u003ch3\u003eWhat type of project is this 18,000 BTU ducted heat pump particularly well suited for?\u003c\/h3\u003e\n\u003cp\u003eWe consider it particularly when a homeowner is looking for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea heat pump without a visible wall-mounted unit;\u003c\/li\u003e\n\u003cli\u003etwo or more small air outlets;\u003c\/li\u003e\n\u003cli\u003ea system for a primary bedroom and an adjacent room;\u003c\/li\u003e\n\u003cli\u003ea solution for one section of a house without a complete central ductwork system;\u003c\/li\u003e\n\u003cli\u003einstallation in a false ceiling;\u003c\/li\u003e\n\u003cli\u003ea \u003cstrong\u003eCold Climate\u003c\/strong\u003e heat pump;\u003c\/li\u003e\n\u003cli\u003eheating down to -30 °C;\u003c\/li\u003e\n\u003cli\u003ea wall control rather than a remote aimed at a wall-mounted head.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen a wall-mounted unit would be simpler\u003c\/h3\u003e\n\u003cp\u003eA ducted system is not automatically the best choice.\u003c\/p\u003e\n\u003cp\u003eA wall-mounted heat pump may make more sense when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eno ceiling space is available;\u003c\/li\u003e\n\u003cli\u003ea false ceiling would have to be built solely for the system;\u003c\/li\u003e\n\u003cli\u003ethe ductwork would be too complex;\u003c\/li\u003e\n\u003cli\u003emaintenance access would be difficult;\u003c\/li\u003e\n\u003cli\u003ethe budget favors a simpler installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe right choice therefore depends on the building as much as on the product.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen to install a SENVILLE ducted heat pump\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eAirGreen\u003c\/strong\u003e, a ducted installation is planned as a complete small ventilation system.\u003c\/p\u003e\n\u003cp\u003eWe check, among other things:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe actual required capacity;\u003c\/li\u003e\n\u003cli\u003ethe indoor unit's location;\u003c\/li\u003e\n\u003cli\u003ethe number of outlets;\u003c\/li\u003e\n\u003cli\u003ethe airflow of each branch;\u003c\/li\u003e\n\u003cli\u003ethe return grille;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant lines;\u003c\/li\u003e\n\u003cli\u003eservice access;\u003c\/li\u003e\n\u003cli\u003ethe electrical supply;\u003c\/li\u003e\n\u003cli\u003ethe wall control;\u003c\/li\u003e\n\u003cli\u003ethe outdoor unit's placement.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003educted heat pump projects in Montreal, Laval, Longueuil, on the South Shore, the North Shore and in Montérégie\u003c\/strong\u003e when aesthetics and air distribution justify a more integrated solution than a wall-mounted head.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 18,000 BTU ducted heat pump\u003c\/strong\u003e offers an interesting technical package: \u003cstrong\u003eSEER2 18, HSPF2-4 10.5, up to 600 CFM, an indoor unit only 8.27 inches high, heating down to -30 °C, inverter modulation and ENERGY STAR certification\u003c\/strong\u003e. The manufacturer's brochure confirms these key features. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact AirGreen for a quote on the SENVILLE SENA R454B 18,000 BTU ducted heat pump, to assess your ductwork and plan a complete HVAC installation 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":56120199545124,"sku":"SENA-18HF-OG","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_GAINABLE_SENVILLE_SENA_R454B_18000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789067159"},{"product_id":"thermopompe-gainable-senville-sena-r454b-24000-btu","title":"Ducted Heat Pump SENVILLE SENA R454B | 24000 BTU","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eA 24,000 BTU ducted system to provide the comfort of a heat pump without a wall-mounted unit visible in the rooms\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSENVILLE SENA R454B 24,000 BTU ducted heat pump\u003c\/strong\u003e is suited to a very different type of project than a conventional wall-mounted heat pump. The indoor unit is concealed in a ceiling, inter-ceiling space, mechanical room, or another technical area, and heated or cooled air is then distributed through short ducts and grilles.\u003c\/p\u003e\n\u003cp\u003eFor many homeowners in \u003cstrong\u003eMontreal, Laval, Longueuil, the South Shore, and the North Shore\u003c\/strong\u003e, this configuration offers an obvious advantage: it keeps the walls clear and provides a much more discreet interior appearance, while still benefiting from an inverter heat pump capable of cooling and heating several rooms.\u003c\/p\u003e\n\u003cp\u003eThe combination presented by AirGreen includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eoutdoor unit: SENA-24HF-OG\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eindoor unit: SENA-24HF-IDG\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAHRI: 215735303\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling capacity of \u003cstrong\u003e24,000 BTU\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eR-454B\u003c\/strong\u003e refrigerant;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEER2: 19.0\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEER2: 12.0\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSPF2: 11.7\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certification;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCold Climate\u003c\/strong\u003e qualification;\u003c\/li\u003e\n\u003cli\u003eheating operation down to \u003cstrong\u003e-30 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eWiFi available as an option;\u003c\/li\u003e\n\u003cli\u003e220 V power supply;\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\/8 in – 5\/8 in\u003c\/strong\u003e piping;\u003c\/li\u003e\n\u003cli\u003eprovincial rebate displayed at \u003cstrong\u003e2 592 $\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Senville brochure specifically describes the SENA-24HF\/ID as a \u003cstrong\u003e24,000 BTU ducted system without traditional central ducts and with a heat pump\u003c\/strong\u003e, ENERGY STAR certified and designed to operate in heating mode down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eA ducted unit is not a traditional central system\u003c\/h3\u003e\n\u003cp\u003eThe term \u003cstrong\u003educted\u003c\/strong\u003e can be confusing.\u003c\/p\u003e\n\u003cp\u003eWe are not necessarily referring here to a central system serving an entire large house with dozens of meters of ductwork. This type of unit is instead designed to be connected to a relatively compact, carefully sized duct network.\u003c\/p\u003e\n\u003cp\u003eThe SENA-24HF-ID indoor unit measures approximately \u003cstrong\u003e39.37 in × 29.53 in × 9.65 in\u003c\/strong\u003e. Its low height allows it to be integrated into certain ceilings or confined spaces where a furnace or vertical central unit would be far too large. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis configuration is particularly interesting for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eserve two or three adjacent bedrooms;\u003c\/li\u003e\n\u003cli\u003ecool an entire floor;\u003c\/li\u003e\n\u003cli\u003eserve an apartment or condo;\u003c\/li\u003e\n\u003cli\u003ecompletely conceal the indoor equipment;\u003c\/li\u003e\n\u003cli\u003epower several grilles with a single unit;\u003c\/li\u003e\n\u003cli\u003eavoid several visible wall-mounted heads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure also contains a verified user review describing a \u003cstrong\u003e24,000 BTU installation used to heat and cool three rooms\u003c\/strong\u003e, with temperature adjustments made through the dampers. The same review also notes that the installation requires more work, including fabricating plenums and suspending the components. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is exactly the trade-off of a ducted system: more design and installation work, but a much more discreet final result.\u003c\/p\u003e\n\u003ch3\u003eRated capacity of 24,000 BTU, but much wider modulation\u003c\/h3\u003e\n\u003cp\u003eThe Senville technical table indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003erated cooling: \u003cstrong\u003e24,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecooling range: \u003cstrong\u003e5,000 to 28,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003erated heating: \u003cstrong\u003e26,000 BTU\/h\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating range: \u003cstrong\u003e7,300 to 31,400 BTU\/h\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThese data are important because an inverter system does not operate constantly at maximum capacity.\u003c\/p\u003e\n\u003cp\u003eAs the rooms approach the requested temperature, the compressor can reduce its output. When the load increases, it can ramp up and provide more than the rated capacity under certain conditions.\u003c\/p\u003e\n\u003cp\u003eThis modulation helps maintain more stable temperatures and avoids the pronounced “on-off” behavior of many older systems.\u003c\/p\u003e\n\u003ch3\u003eSEER2 19 and HSPF2 11.7: consistent efficiency for a ducted system\u003c\/h3\u003e\n\u003cp\u003eThe official documentation states:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSENVILLE SENA-24HF-ID\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated cooling\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e24,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated heating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e26,000 BTU\/h\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSEER2\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e19,0\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEER2\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e12,0\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSPF2-4\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e11,7\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSPF2-5\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9,3\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated COP\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3,81\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum outdoor heating temperature\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e-30 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum indoor airflow\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e853.5 CFM\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEER2 of 19\u003c\/strong\u003e is appealing for a ducted heat pump. However, this figure should not be compared too directly with that of a small wall-mounted unit, which may sometimes have a much higher SEER2.\u003c\/p\u003e\n\u003cp\u003eIn a ducted system, the fan must push air through ducts, transitions, grilles and possibly several branches. Overall performance therefore also depends greatly on the quality of the air-distribution network.\u003c\/p\u003e\n\u003ch3\u003e854 CFM: the ductwork becomes a component of the system\u003c\/h3\u003e\n\u003cp\u003eThe advertised maximum indoor airflow is \u003cstrong\u003e853.5 CFM\u003c\/strong\u003e, or approximately \u003cstrong\u003e854 CFM\u003c\/strong\u003e. The other listed levels are approximately \u003cstrong\u003e706.3, 618 and 500.3 CFM\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese data are central to the design.\u003c\/p\u003e\n\u003cp\u003eA 24,000 BTU ducted unit should not be connected to a few small ducts chosen solely because they fit easily into the ceiling.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we must check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe duct cross-section;\u003c\/li\u003e\n\u003cli\u003ethe length of the runs;\u003c\/li\u003e\n\u003cli\u003ethe number of elbows;\u003c\/li\u003e\n\u003cli\u003ethe size of the grilles;\u003c\/li\u003e\n\u003cli\u003ereturn air;\u003c\/li\u003e\n\u003cli\u003estatic pressure;\u003c\/li\u003e\n\u003cli\u003ebalancing between the rooms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA duct that is too small can create noise and reduce airflow. A duct that is too large or improperly balanced can send too much air into one room and not enough into another.\u003c\/p\u003e\n\u003ch3\u003eThe ducted system allows the rooms to be adjusted with dampers, but it does not create multiple independent thermostats.\u003c\/h3\u003e\n\u003cp\u003eThis is a very important nuance.\u003c\/p\u003e\n\u003cp\u003eIf a single ducted unit serves three bedrooms, we can balance the airflow using dampers and ductwork design. But this does not automatically turn the system into a true independent multi-zone heat pump.\u003c\/p\u003e\n\u003cp\u003eThere is generally only one main control logic.\u003c\/p\u003e\n\u003cp\u003eWe can therefore adjust the amount of air sent to each room, but the three rooms do not become three completely independent systems.\u003c\/p\u003e\n\u003cp\u003eFor a homeowner who requires 19 °C in one bedroom, 23 °C in another, and 21 °C in a third, with completely independent control, a multizone system with separate units may be more appropriate.\u003c\/p\u003e\n\u003ch3\u003eA wired wall controller rather than a simple infrared remote\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates \u003cstrong\u003ewired control\u003c\/strong\u003e for this ducted unit. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis makes sense for a unit hidden above a ceiling or in a utility space.\u003c\/p\u003e\n\u003cp\u003eThe wall controller must be placed in an area representative of the overall temperature served by the system, away from:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eof a very sunny window;\u003c\/li\u003e\n\u003cli\u003eof an exterior door;\u003c\/li\u003e\n\u003cli\u003eof a draft;\u003c\/li\u003e\n\u003cli\u003eof a heat source;\u003c\/li\u003e\n\u003cli\u003eof a supply grille.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe AirGreen specifications also indicate that \u003cstrong\u003eWiFi can be added as an option\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHeating down to -30 °C: the actual capacity remains the figure to watch\u003c\/h3\u003e\n\u003cp\u003eThe heat pump is advertised as \u003cstrong\u003eCold Climate\u003c\/strong\u003e, and the brochure confirms a minimum outdoor heating temperature of \u003cstrong\u003e-30 °C\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen specifications provide additional data:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e21,600 BTU\/h at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e24,000 BTU\/h at -15 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eapproximately \u003cstrong\u003e10,200 BTU\/h at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt also indicates a COP of approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.71 at -8 °C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.28 at -30 °C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese figures show why the “-30 °C” rating must always be interpreted with caution.\u003c\/p\u003e\n\u003cp\u003eAt -15 °C, the capacity remains very good. At -30 °C, it drops significantly.\u003c\/p\u003e\n\u003cp\u003eAt the same time, the building’s heat loss increases.\u003c\/p\u003e\n\u003cp\u003eFor an installation in a \u003cstrong\u003eMontreal, Laval, or Longueuil\u003c\/strong\u003e home, we must therefore determine whether the ducted system should be the zone’s primary heating source or whether it will be supported by baseboards or another source during the coldest periods.\u003c\/p\u003e\n\u003ch2\u003eDesigning and installing a SENVILLE ducted system: the invisible details are what determine the outcome\u003c\/h2\u003e\n\u003ch3\u003eThe ducted unit is discreet after installation, but a great deal of work is hidden above the ceiling\u003c\/h3\u003e\n\u003cp\u003eA successful installation may leave only a few visible grilles in the rooms.\u003c\/p\u003e\n\u003cp\u003eBehind this apparent simplicity, we must plan for:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ethe unit’s position;\u003c\/li\u003e\n\u003cli\u003ethe supply plenum;\u003c\/li\u003e\n\u003cli\u003ereturn air;\u003c\/li\u003e\n\u003cli\u003ethe ducts;\u003c\/li\u003e\n\u003cli\u003ethe supports;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant lines;\u003c\/li\u003e\n\u003cli\u003ethe controller;\u003c\/li\u003e\n\u003cli\u003ethe service access.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe customer comment featured in the brochure is particularly revealing: it describes the installation as lengthy, notably because of fabricating the plenums and suspending the components, but describes the final result as excellent. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eAn interior height of only 9.65 in, but the required space is greater\u003c\/h3\u003e\n\u003cp\u003eThe unit itself is \u003cstrong\u003e9.65 in. high\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis does not mean that 10 inches of clearance will always be sufficient.\u003c\/p\u003e\n\u003cp\u003eThe following must also be planned:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe fittings;\u003c\/li\u003e\n\u003cli\u003ethe insulation;\u003c\/li\u003e\n\u003cli\u003ethe drain;\u003c\/li\u003e\n\u003cli\u003ethe plenum;\u003c\/li\u003e\n\u003cli\u003ethe suspension;\u003c\/li\u003e\n\u003cli\u003eaccess to the panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe therefore check the available height before promising that a system can be completely concealed.\u003c\/p\u003e\n\u003ch3\u003eThe air return must not be overlooked\u003c\/h3\u003e\n\u003cp\u003eWith a wall-mounted unit, air returns directly to the appliance through its filter.\u003c\/p\u003e\n\u003cp\u003eWith a ducted unit, a \u003cstrong\u003eproperly sized air return\u003c\/strong\u003e must be created.\u003c\/p\u003e\n\u003cp\u003eAn undersized return can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ea whistling sound;\u003c\/li\u003e\n\u003cli\u003eexcessive static pressure;\u003c\/li\u003e\n\u003cli\u003ea reduction in airflow;\u003c\/li\u003e\n\u003cli\u003ean increase in noise;\u003c\/li\u003e\n\u003cli\u003ea loss of performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn some projects, the available space for the return is more difficult to find than the space for the supply.\u003c\/p\u003e\n\u003ch3\u003eIndoor sound levels can drop to 29.5 dB(A)\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates indoor sound levels of approximately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 dB(A)\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e37 dB(A)\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35 dB(A)\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eup to \u003cstrong\u003e29.5 dB(A)\u003c\/strong\u003e at low speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis can result in a very quiet system, especially when the unit is properly isolated from the building and located outside the main room.\u003c\/p\u003e\n\u003cp\u003ePoor mounting or improperly sized ducts can nevertheless transmit noise and vibrations. Installation quality is therefore decisive.\u003c\/p\u003e\n\u003ch3\u003eApproximately 2.03 L\/h of dehumidification\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates a moisture removal capacity of approximately \u003cstrong\u003e2.03 liters per hour\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDuring a humid summer in Greater Montreal, this function directly contributes to comfort.\u003c\/p\u003e\n\u003cp\u003eIt also means that the drain must be able to discharge a significant amount of water during long operating periods.\u003c\/p\u003e\n\u003ch3\u003eDrainage must remain accessible\u003c\/h3\u003e\n\u003cp\u003eA concealed ducted unit in a ceiling can become problematic if the drain was installed without future access.\u003c\/p\u003e\n\u003cp\u003eWe therefore aim to plan a solution that will allow the technician to inspect or clean:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe pan;\u003c\/li\u003e\n\u003cli\u003ethe outlet;\u003c\/li\u003e\n\u003cli\u003ethe fittings;\u003c\/li\u003e\n\u003cli\u003ethe drain route.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA leak above a finished ceiling can be much more costly than a visible leak beneath a wall-mounted unit.\u003c\/p\u003e\n\u003ch3\u003eR-454B and 25-foot precharge\u003c\/h3\u003e\n\u003cp\u003eThe documentation indicates a charge of approximately \u003cstrong\u003e63.49 oz of R-454B\u003c\/strong\u003e and a precharge for approximately \u003cstrong\u003e25 feet\u003c\/strong\u003e of piping. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSenville also specifies that a 50-foot line set requires refrigerant to be added on site. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen data sheet indicates the diameters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8 in. liquid\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8 in. gas\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt 24,000 BTU, these dimensions are larger than those used on several small wall-mounted heat pumps.\u003c\/p\u003e\n\u003ch3\u003eR-454B: why professional installation is even more important\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eR-454B\u003c\/strong\u003e belongs to the A2L refrigerant family.\u003c\/p\u003e\n\u003cp\u003eCommissioning must therefore be carried out using appropriate procedures and tools.\u003c\/p\u003e\n\u003cp\u003eA professional installation includes, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eproperly prepared connections;\u003c\/li\u003e\n\u003cli\u003eleak testing;\u003c\/li\u003e\n\u003cli\u003evacuuming;\u003c\/li\u003e\n\u003cli\u003eproper charge;\u003c\/li\u003e\n\u003cli\u003etemperature and operation verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure also specifies that professional installation is necessary to maintain the warranty and the expected performance. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eOutdoor unit: dimensions and sound level\u003c\/h3\u003e\n\u003cp\u003eThe outdoor unit measures approximately:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e37.24 × 16.14 × 31.89 in\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eand weighs approximately \u003cstrong\u003e130.29 lb\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe brochure also indicates a maximum outdoor airflow of approximately \u003cstrong\u003e2,236.7 CFM\u003c\/strong\u003e and a sound level of \u003cstrong\u003e61.5 dB(A)\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe AirGreen sheet currently mentions \u003cstrong\u003e55 dB(A)\u003c\/strong\u003e for the outdoor sound level. Since this value differs from the attached technical brochure, we recommend confirming the applicable value for the exact combination \u003cstrong\u003eSENA-24HF-OG + SENA-24HF-IDG\u003c\/strong\u003e before comparing this model’s noise level with another unit.\u003c\/p\u003e\n\u003ch3\u003eA discrepancy requiring verification regarding MCA and MOP\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen sheet provided currently indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMCA: 15 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMOP: 15 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe technical brochure for the SENA-24HF-ID model nevertheless indicates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMinimum Circuit Ampacity: 25 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum Fuse: 25 A\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis difference is too significant to ignore.\u003c\/p\u003e\n\u003cp\u003eBefore an \u003cstrong\u003eHVAC installation\u003c\/strong\u003e, we must confirm the nameplate data of the units and the electrical requirements corresponding exactly to the AHRI combination. The circuit must never be sized solely based on contradictory commercial data.\u003c\/p\u003e\n\u003ch3\u003e14\/4 AWG interconnection wire\u003c\/h3\u003e\n\u003cp\u003eThe brochure indicates connection wiring \u003cstrong\u003e14\/4 AWG\u003c\/strong\u003e between the components. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis indication concerns the interconnection planned by the manufacturer and does not replace a complete verification of the electrical supply circuit.\u003c\/p\u003e\n\u003ch3\u003eENERGY STAR and a provincial subsidy of $2,592\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen combination is listed as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eENERGY STAR: yes\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Climate: yes\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR ID \u003cstrong\u003e3630050\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eprovincial subsidy: \u003cstrong\u003e2 592 $\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe brochure confirms ENERGY STAR certification and heating down to -30 °C. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEligibility for and the amount of a subsidy must always be verified at the time of quotation using the exact combination and the current program rules.\u003c\/p\u003e\n\u003ch3\u003eWarranty: another detail to be confirmed\u003c\/h3\u003e\n\u003cp\u003eThe AirGreen sheet states:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 years compressor – 10 years parts – 0 years labor\u003c\/strong\u003e, with the possibility of an additional warranty.\u003c\/p\u003e\n\u003cp\u003eThe Senville brochure currently states:\u003c\/p\u003e\n\u003cp\u003e\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 also states \u003cstrong\u003e10 years compressor \/ 5 years parts\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe coverage applicable to the product actually sold must therefore be confirmed at the time of ordering.\u003c\/p\u003e\n\u003ch3\u003eDucted or several wall-mounted units: how we make the choice\u003c\/h3\u003e\n\u003cp\u003eA ducted system has several advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einvisible indoor equipment;\u003c\/li\u003e\n\u003cli\u003ea single indoor unit;\u003c\/li\u003e\n\u003cli\u003eseveral possible grilles;\u003c\/li\u003e\n\u003cli\u003egood architectural integration;\u003c\/li\u003e\n\u003cli\u003equiet operation;\u003c\/li\u003e\n\u003cli\u003ecompletely unobstructed walls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBut it requires:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003educts;\u003c\/li\u003e\n\u003cli\u003eplenums;\u003c\/li\u003e\n\u003cli\u003ea return-air path;\u003c\/li\u003e\n\u003cli\u003etechnical space;\u003c\/li\u003e\n\u003cli\u003emore design work;\u003c\/li\u003e\n\u003cli\u003ewell-planned maintenance access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSeveral wall-mounted units are generally easier to install and allow truly independent room control, but they remain visible.\u003c\/p\u003e\n\u003cp\u003eThe choice therefore depends as much on the building as on the equipment.\u003c\/p\u003e\n\u003ch3\u003eA scenario particularly well suited to this 24,000 BTU SENVILLE unit\u003c\/h3\u003e\n\u003cp\u003eConsider a floor with three bedrooms close together and a hallway.\u003c\/p\u003e\n\u003cp\u003eThe homeowner does not want three wall-mounted heads.\u003c\/p\u003e\n\u003cp\u003eIf the ceiling space allows the ducted unit to be installed and three short, properly sized branches to be created, the SENA-24HF-ID can be a very clean solution.\u003c\/p\u003e\n\u003cp\u003eWe can then adjust the dampers to balance the airflow according to each room’s load.\u003c\/p\u003e\n\u003cp\u003eConversely, if the rooms are very far apart and the ducts become long, winding, and difficult to balance, another solution may be preferable.\u003c\/p\u003e\n\u003ch3\u003eWhy choose AirGreen for a ducted system\u003c\/h3\u003e\n\u003cp\u003eA ducted heat pump requires more design work than a wall-mounted unit.\u003c\/p\u003e\n\u003cp\u003eAt AirGreen, we assess:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe heating load;\u003c\/li\u003e\n\u003cli\u003ethe location of the concealed unit;\u003c\/li\u003e\n\u003cli\u003ethe ductwork network;\u003c\/li\u003e\n\u003cli\u003egrilles;\u003c\/li\u003e\n\u003cli\u003ereturn air;\u003c\/li\u003e\n\u003cli\u003estatic pressure;\u003c\/li\u003e\n\u003cli\u003edrainage;\u003c\/li\u003e\n\u003cli\u003eelectricity;\u003c\/li\u003e\n\u003cli\u003ethe refrigerant circuit;\u003c\/li\u003e\n\u003cli\u003eaccessibility;\u003c\/li\u003e\n\u003cli\u003elow-temperature heating;\u003c\/li\u003e\n\u003cli\u003ethe rebate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe carry out \u003cstrong\u003educted heat pump installations in Montreal, Laval, Longueuil, the South Shore, the North Shore, and Montérégie\u003c\/strong\u003e, both for renovations and for projects where interior aesthetics require the HVAC components to be concealed.\u003c\/p\u003e\n\u003ch3\u003eOur assessment of the SENVILLE SENA R454B 24,000 BTU ducted heat pump\u003c\/h3\u003e\n\u003cp\u003eThis combination has several particularly interesting features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24,000 BTU cooling capacity\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26,000 BTU nominal heating capacity according to the brochure\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecapacity modulation up to \u003cstrong\u003e28,000 BTU in cooling mode\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ecapacity modulation up to \u003cstrong\u003e31,400 BTU in heating mode\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEER2 19\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEER2 12\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSPF2-4 11.7\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eheating down to \u003cstrong\u003e-30°C\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eENERGY STAR;\u003c\/li\u003e\n\u003cli\u003eCold Climate;\u003c\/li\u003e\n\u003cli\u003eR-454B;\u003c\/li\u003e\n\u003cli\u003emaximium airflow of approximately \u003cstrong\u003e854 CFM\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eindoor sound level as low as \u003cstrong\u003e29.5 dB(A)\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eindoor unit only \u003cstrong\u003e9.65 in. high\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eWiFi available as an option;\u003c\/li\u003e\n\u003cli\u003ewired wall controller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts main advantage, however, is architectural: it delivers the performance of an inverter heat pump without displaying a large indoor unit on every wall.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a quote on a SENVILLE SENA R454B 24,000 BTU ducted heat pump, contact AirGreen. We can check the available space, size the ductwork, confirm heating requirements, verify electrical requirements, and check the applicable financial assistance for your project in Montreal, Laval, Longueuil, the North Shore, or the South Shore.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Senville","offers":[{"title":"Default Title","offer_id":56120199577892,"sku":"SENA-24HF-OG","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_GAINABLE_SENVILLE_SENA_R454B_24000_BTU_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789067167"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/collections\/CARTE_PRINCIPALE_THERMOPOMPE_GAINABLE_SENVILLE_SENA_R454B_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD.png?v=1789067341","url":"https:\/\/airgreen.ca\/en\/collections\/conduit-gainable-senville-installation-a-montreal-laval-longueuil-rive-sud-et-rive-nord.oembed","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}