{"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","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-gainable-senville-sena-r454b-9000-btu","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}