{"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","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-gainable-senville-sena-r454b-24000-btu","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}