{"product_id":"thermopompe-centrale-arcoaire-r4h5s-economique-3-5-tonnes-42000-btu-cabinet-fjma4x-r410a","title":"Central Heat Pump ARCOAIRE R4H5S Economy | 3.5 Tons - 42,000 BTU (Air Handler FJMA4X) - R410A","description":"\u003ch2\u003eReplace the electric furnace without touching the home's ducts\u003c\/h2\u003e\u003cp\u003eMany homes heated by an \u003cstrong\u003eelectric furnace\u003c\/strong\u003e already have what a \u003cstrong\u003ecentral heat pump\u003c\/strong\u003e needs: a \u003cstrong\u003educt system\u003c\/strong\u003e that serves every room. The \u003cstrong\u003eCentral Heat Pump ARCOAIRE R4H5S Economy | 3.5 Tons - 42,000 BTU (Air Handler FJMA4X) - R410A\u003c\/strong\u003e pairs the \u003cstrong\u003eR4H5S42AKAAA\u003c\/strong\u003e outdoor unit with the \u003cstrong\u003eFJMA4X42L0BB\u003c\/strong\u003e indoor unit, an air handler that takes the place of the furnace and pushes air through the existing duct system. The home stays electrically heated, but by a system that moves heat instead of producing it, heating in winter and cooling in summer.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e3.5-ton\u003c\/strong\u003e size sits between the common 3-ton and 4-ton sizes, which makes it possible to closely follow the load calculation of medium to large homes.\u003c\/p\u003e\u003ch3\u003eAn electric-furnace home that already has its ducts\u003c\/h3\u003e\u003cp\u003eA forced-air electric furnace distributes heat through \u003cstrong\u003educts\u003c\/strong\u003e and registers in each room, with a central air return. That is exactly the duct system a central heat pump needs. Instead of installing wall units room by room, you replace the unit at the heart of the system and keep the existing registers.\u003c\/p\u003e\u003cp\u003eThe duct system does need to be checked. A heat pump blows air that is less hot than an electric furnace, but in greater volume and for longer. The ducts, and especially the air returns, must let that airflow through. We measure and inspect the duct system before the quote and list the adjustments needed rather than finding them on installation day.\u003c\/p\u003e\u003ch3\u003eWhat changes in the mechanical room\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eFJMA4X42L0BB\u003c\/strong\u003e air handler usually goes where the old electric furnace stood and connects to the existing supply plenum and return. It houses the indoor coil, the blower and the filter, and it receives the electric \u003cstrong\u003ebackup heat\u003c\/strong\u003e, which takes over the role of the old furnace's elements.\u003c\/p\u003e\u003cp\u003eIf the home also has an aging central air conditioner, its coil and outdoor unit are removed at the same time, and its refrigerant is recovered before dismantling. The thermostat is replaced with a model that manages the heat pump and its backup, and the mechanical room keeps one unit instead of two.\u003c\/p\u003e\u003ch3\u003eElectrical capacity, the first thing to check\u003c\/h3\u003e\u003cp\u003eReplacing an electric furnace with a central heat pump redistributes the load on the panel: the heat pump on one side, the air handler's backup elements on the other. In an older home, the panel is often already well filled, and the old furnace's circuit does not always suit the new unit as is. It is the first point we check during the visit.\u003c\/p\u003e\u003cp\u003eWe assess the available capacity, the space for breakers and the cable route to the outdoor unit and to the air handler. The heat pump is fed by a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e. If the panel or the service needs to be modified, we state it clearly in the written quote.\u003c\/p\u003e\u003ch3\u003eHomes suited to the 3.5-ton size\u003c\/h3\u003e\u003cp\u003eThis size typically suits a two-level cottage or house from the fifties or sixties with a basement, an enlarged bungalow or a good-sized semi-detached home. Many are heated by a forced-air electric furnace, and their insulation varies a great deal depending on the renovations done since they were built.\u003c\/p\u003e\u003cp\u003eThat is why the size is confirmed by a room-by-room load calculation. A recently insulated attic, new windows or a finished basement change the result. If the calculation shows that a 3-ton or 4-ton size is a better fit, we recommend it.\u003c\/p\u003e\u003ch3\u003eHow the heat pump heats the house\u003c\/h3\u003e\u003cp\u003eAn electric furnace produces heat with heating elements: it gives back as heat the electricity it uses, and no more. A heat pump moves it instead: the refrigerant captures the heat contained in the outdoor air, the compressor concentrates it, then the indoor unit's coil releases it into the air circulating through the \u003cstrong\u003educts\u003c\/strong\u003e. The system runs on \u003cstrong\u003eR-410A\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThe heat therefore arrives gentler and steadier than with an electric furnace's elements. Instead of short bursts of very hot air, air circulates longer at a moderate temperature. Most people find the house more even, with smaller gaps between the basement and the bedrooms. The blower can also run continuously, depending on the thermostat setting, to mix the air between levels and pass it through the filter.\u003c\/p\u003e\u003ch3\u003eIn deep cold, electric backup heat\u003c\/h3\u003e\u003cp\u003eThis pairing is a conventional central heat pump; it is not listed as a cold-climate heat pump. Its heating capacity drops with the outdoor temperature. When the cold becomes too intense, the air handler's backup elements take over and keep the house heated.\u003c\/p\u003e\u003cp\u003eThe thermostat manages this handoff: the heat pump first, the backup second, and only when needed. We size the backup according to the load calculation and the available electrical capacity.\u003c\/p\u003e\u003cp\u003eA useful clarification: the air handler's backup works like the elements of your current electric furnace. In deep cold, it therefore plays the role the furnace plays today; the rest of the winter, the heat pump does most of the work and the elements stay at rest.\u003c\/p\u003e\u003ch3\u003eSummer: cooling through the same ducts\u003c\/h3\u003e\u003cp\u003eMany homes heated by an electric furnace have never had central air conditioning, or make do with an old air conditioner at the end of its life. With this system, cool air travels in summer through the same \u003cstrong\u003educts\u003c\/strong\u003e as the heat in winter. The indoor coil also removes moisture, which drains through the condensate drain; this is often the most appreciated difference in a finished basement.\u003c\/p\u003e\u003cp\u003eDuct systems designed for heating sometimes have few registers upstairs, where summer heat builds up. We check this during the visit and suggest simple corrections to the duct system if needed. After that, a reasonable summer setpoint and a clean filter are usually enough to keep the whole house comfortable.\u003c\/p\u003e\u003ch3\u003eSystem ratings\u003c\/h3\u003e\u003cp\u003eThe pairing of the \u003cstrong\u003eR4H5S42AKAAA\u003c\/strong\u003e outdoor unit and the \u003cstrong\u003eFJMA4X42L0BB\u003c\/strong\u003e indoor unit is not listed with SEER2 ratings in the AHRI certification directory. We therefore publish no efficiency rating for this pairing. We confirm the ratings of the complete system before the quote; they also determine grant eligibility.\u003c\/p\u003e\u003ch3\u003eLogisVert\u003c\/h3\u003e\u003cp\u003eThis pairing does not carry an amount on Hydro-Québec's \u003cstrong\u003eLogisVert\u003c\/strong\u003e list of October 19, 2026. If the grant matters for your project, we will point you to an eligible pairing of comparable size.\u003c\/p\u003e\u003ch2\u003eInstallation in a ducted home\u003c\/h2\u003e\u003cp\u003eThe indoor unit takes the place of the old electric furnace and connects to the existing \u003cstrong\u003educt system\u003c\/strong\u003e. Before the quote, we check duct sizes and the air return, because a central heat pump only delivers its full efficiency if the airflow keeps up. The outdoor unit goes on a stand, above the snow line, on a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eThe steps of the job\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eAssessment\u003c\/strong\u003e: load calculation, duct inspection, electrical panel check and choice of the outdoor location.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eUnit replacement\u003c\/strong\u003e: removal of the electric furnace and installation of the air handler on the plenum and return.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eOutdoor unit\u003c\/strong\u003e: stand above the snow line, away from snow sliding off the roof.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eLine set and drain\u003c\/strong\u003e: line set insulated, evacuated and checked; condensate drain connected to a discharge point.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eElectrical and commissioning\u003c\/strong\u003e: dedicated circuit, backup heat, compatible thermostat, check of the charge and airflow.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eMaintenance\u003c\/h3\u003e\u003cp\u003eReplace the system filter according to its format, keep the outdoor unit clear of snow and leaves, and plan annual \u003cstrong\u003eHVAC\u003c\/strong\u003e maintenance of the coil, condensate drain and electrical connections. In winter, white vapour during defrost is normal. The same visit checks the backup elements, which have taken over from those of the old furnace.\u003c\/p\u003e\u003ch3\u003eAirGreen, for the life of the installation\u003c\/h3\u003e\u003cp\u003eA family business active for more than fifteen years in \u003cstrong\u003eMontreal\u003c\/strong\u003e, \u003cstrong\u003eLaval\u003c\/strong\u003e, \u003cstrong\u003eLongueuil\u003c\/strong\u003e, the \u003cstrong\u003eNorth Shore\u003c\/strong\u003e and the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e, we hold RBQ licences for ventilation, refrigeration and electrical work and carry \u003cstrong\u003e$5,000,000\u003c\/strong\u003e in liability insurance. The in-home assessment is free, the quote is in writing, and our \u003ca href=\"\/en\/pages\/financement-avec-financeit\"\u003efinancing options\u003c\/a\u003e let you choose the right unit rather than the cheapest one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRequest your free estimate for the Central Heat Pump ARCOAIRE R4H5S Economy | 3.5 Tons - 42,000 BTU (Air Handler FJMA4X) - R410A. We assess the home room by room and confirm the right size and your grant eligibility before signing.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10 years on the compressor, 10 years on parts and 6 years on labor.\u003c\/p\u003e","brand":"Arcoaire","offers":[{"title":"Default Title","offer_id":67797951742244,"sku":"R4H5S42AKAAA","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/THERMOPOMPE_CENTRALE_ARCOAIRE_R4H5S_3_5_TONNES_42000_BTU_R410A_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082547","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-centrale-arcoaire-r4h5s-economique-3-5-tonnes-42000-btu-cabinet-fjma4x-r410a","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}