{"product_id":"thermopompe-4-tetes-general-airstage-rlxfz-compresseur-45-000-btu-montreal-laval-longueuil-rive-sud-et-rive-nord","title":"GENERAL AIRSTAGE RLXFZ 4-Head Heat Pump | 45,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore and North Shore","description":"\u003ch2\u003eGENERAL AIRSTAGE RLXFZ 4-Zone 45,000 BTU Heat Pump: four 9,000 BTU heads for a fourplex, the Fujitsu AIRSTAGE multi-zone under its new name, installed by AirGreen\u003c\/h2\u003e\n\u003cp\u003eThis GENERAL AIRSTAGE \u003cstrong\u003emulti-zone system\u003c\/strong\u003e is, part for part, the Fujitsu AIRSTAGE system built around the \u003cstrong\u003eAOU45RLXFZ\u003c\/strong\u003e outdoor unit: the same 45,000 BTU Inverter compressor, the same 4 zones, the same page configuration (9,000 + 9,000 + 9,000 + 9,000 BTU), the same AHRI certificate 8908617, the same performance values and the same warranty of 12 years on the compressor, 12 years on parts and 6 years on labour. What changed is the manufacturer's name: Fujitsu General Limited became GENERAL Inc. on January 1, 2026.\u003c\/p\u003e\n\u003cp\u003eWe built this page around a case we see often in Longueuil and Saint-Hubert: the fourplex whose owner wants to cool and heat four units without lining up four compressors along the back wall. Four 9,000 BTU \u003cstrong\u003ewall-mounted heads\u003c\/strong\u003e, one per unit, tied to a single outdoor unit: that is the configuration on this page, and it is the leanest way to give every tenant their own setpoint.\u003c\/p\u003e\n\u003cp\u003eBudget matters in a rental building, and a multi-zone respects it without taking anything away from comfort. One outdoor unit to set, one base, one electrical circuit, one outdoor machine to maintain, instead of four separate machines each aging on its own schedule. The heads, for their part, stay independent: every tenant sets their own temperature, airflow and schedule with their own remote. The mode, heating or cooling, is shared by the outdoor unit, as with any multi-zone (multi-split); in a building, it follows the season anyway.\u003c\/p\u003e\n\u003ch3\u003eGENERAL or Fujitsu AIRSTAGE: the same machine\u003c\/h3\u003e\n\u003cp\u003eIn August 2025, Paloma Rheem Holdings, owner of Rheem since 1988, acquired Fujitsu General Limited. On January 1, 2026, the company took the name GENERAL Inc. The head office and the R\u0026amp;D centre stayed in Kawasaki, Japan; the factories, the AIRSTAGE products, the model numbers and the warranty program did not move. The Fujitsu brand is being phased out and, during the transition, the same machine is sold under both names. In Canada, Rheem Canada has handled sales since February 2026, and Groupe Master remains our distributor.\u003c\/p\u003e\n\u003cp\u003eThat is why we keep both pages online. An owner who shopped for a \"Fujitsu 4-zone\" and another who read GENERAL AIRSTAGE on a box must find the same AOU45RLXFZ outdoor unit, the same list of compatible heads and the same numbers. The table below puts them side by side.\u003c\/p\u003e\n\u003ctable class=\"tp-compare\" style=\"width:100%;border-collapse:collapse\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth style=\"text-align:left;padding:8px;border-bottom:2px solid #07292D\"\u003eSpecification\u003c\/th\u003e\u003cth style=\"text-align:left;padding:8px;border-bottom:2px solid #07292D\"\u003eGENERAL AIRSTAGE\u003c\/th\u003e\u003cth style=\"text-align:left;padding:8px;border-bottom:2px solid #07292D\"\u003eFujitsu AIRSTAGE\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eOutdoor unit\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eAOU45RLXFZ\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eAOU45RLXFZ\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eZones\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e4 (maximum 5)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e4 (maximum 5)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eHeads in this configuration\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e9,000 + 9,000 + 9,000 + 9,000 BTU\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e9,000 + 9,000 + 9,000 + 9,000 BTU\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eCompatible indoor units\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eASU7RLF1, ASU9RLF1, ASU12RLF1, ASU15RF1, ASU18RLF\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eASU7RLF1, ASU9RLF1, ASU12RLF1, ASU15RF1, ASU18RLF\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eAHRI certificate\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e8908617\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e8908617\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eCompressor capacity\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e45,000 BTU\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e45,000 BTU\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eRefrigerant\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eR-410A\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eR-410A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003ePower supply\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e208\/230 V\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e208\/230 V\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eSEER2\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e20.0\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e20.0\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eHSPF2\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e9.2\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e9.2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eEER2\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e10.5\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e10.5\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eHeating capacity at −8 °C\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e28,200 BTU\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e28,200 BTU\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eHeating capacity at −15 °C\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e31,400 BTU\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e31,400 BTU\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eCOP at −15 °C\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e1.88\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e1.88\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eHeats down to\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e−15 °C\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e−15 °C\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eENERGY STAR\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eNo\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eOutdoor unit dimensions (W × D × H, in)\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e39.31 x 14.56 x 38.19\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e39.31 x 14.56 x 38.19\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eOutdoor sound level\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e55.0 dB(A)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e55.0 dB(A)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eDehumidification\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e3.8 pints\/h\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e3.8 pints\/h\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eWi-Fi\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eOptional\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eOptional\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eLogisVert grant (Hydro-Québec, list of October 27, 2026)\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eNot listed\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eNot listed\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eWarranty (compressor · parts · labour, years)\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003e12 · 12 · 6\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e12 · 12 · 6\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eManufacturer\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003e\u003cstrong\u003eGENERAL Inc. (Kawasaki, Japan)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd\"\u003eGENERAL Inc. (Kawasaki, Japan)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px\"\u003eProduct page\u003c\/td\u003e\u003ctd style=\"padding:8px\"\u003e\u003cstrong\u003eThis page\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px\"\u003e\u003ca href=\"https:\/\/airgreen.ca\/products\/thermopompe-4-tetes-fujitsu-rlxfz-compresseur-45-000-btu-montreal-laval-longueuil-rive-sud-et-rive-nord\"\u003eFujitsu AIRSTAGE RLXFZ 4-zone 45,000 BTU\u003c\/a\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/airgreen.ca\/products\/thermopompe-4-tetes-fujitsu-rlxfz-compresseur-45-000-btu-montreal-laval-longueuil-rive-sud-et-rive-nord\"\u003eFujitsu AIRSTAGE RLXFZ 4-zone 45,000 BTU page\u003c\/a\u003e remains available for a line-by-line comparison; you will find exactly the same values there.\u003c\/p\u003e\n\u003cp\u003eThe figures on this page are the values published by the manufacturer. The 45,000 BTU Inverter compressor posts a \u003cstrong\u003eSEER2\u003c\/strong\u003e of 20.0 in cooling, an EER2 of 10.5 and an \u003cstrong\u003eHSPF2\u003c\/strong\u003e of 9.2 in heating. The HSPF2 sums up the whole heating season: the higher it is, the more heat is delivered per kilowatt-hour consumed. The COP, on the other hand, is a snapshot taken at one precise temperature. At −8 °C, the manufacturer publishes 28,200 BTU\/h; at −15 °C, it publishes 31,400 BTU\/h with a COP of 1.88, which means almost twice the heat of an electric baseboard for the same electricity. \u003cstrong\u003eGuaranteed heating\u003c\/strong\u003e goes down to −15 °C, which covers most of the winter in Longueuil; below that point, each unit's baseboards take over.\u003c\/p\u003e\n\u003cp\u003eConcretely, for a fourplex, here is what that gives you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne setpoint per zone: every unit has its own remote, its own temperature and its own schedule, without going through the neighbour.\u003c\/li\u003e\n\u003cli\u003eFour 9,000 BTU heads on a 45,000 BTU compressor: there is margin left for the cold mornings when all four units call at the same time.\u003c\/li\u003e\n\u003cli\u003eDehumidification of 3.8 pints per hour in cooling, for units that stay dry in July.\u003c\/li\u003e\n\u003cli\u003eAn outdoor sound level of 55 dB(A): a single source of noise in the yard, instead of four.\u003c\/li\u003e\n\u003cli\u003eOptional Wi-Fi, handy for the owner who wants to keep an eye on a vacant unit between two tenants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 9,000 + 9,000 + 9,000 + 9,000 BTU configuration is the one on this page; it is not set in stone. This compressor accepts up to 5 zones and five models of wall-mounted heads: ASU7RLF1 (7,000 BTU), ASU9RLF1 (9,000 BTU), ASU12RLF1 (12,000 BTU), ASU15RF1 (15,000 BTU) and ASU18RLF (18,000 BTU). A corner unit, more exposed to the wind, can receive a 12,000 BTU head while the other three keep 9,000 BTU; a fifth head can serve an owner's room in the basement or a common area. We choose each head with you, unit by unit, after the visit.\u003c\/p\u003e\n\u003cp\u003eInstallation by AirGreen on a fourplex follows a simple logic:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA single \u003cstrong\u003eoutdoor unit\u003c\/strong\u003e, the AOU45RLXFZ, set on a base or a clear bracket at the back of the building, where it gets in the way of neither a balcony nor a bedroom window.\u003c\/li\u003e\n\u003cli\u003eOne \u003cstrong\u003erefrigerant line\u003c\/strong\u003e per head: four identified lines, grouped in a raceway along the back wall, with a single wall penetration per unit.\u003c\/li\u003e\n\u003cli\u003eEach head mounted high on a wall of the unit's main room, with the clearance needed for the air to circulate through the whole space.\u003c\/li\u003e\n\u003cli\u003eGravity drainage for each head, to the outside or to a drain, without a pump when the slope allows it.\u003c\/li\u003e\n\u003cli\u003eA single dedicated electrical circuit for the outdoor unit, instead of four.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaintenance comes down to two things. The \u003cstrong\u003eindoor filters\u003c\/strong\u003e of each head come out without tools and rinse under water; in a rental building, we show the move to each tenant at commissioning. After that, a regular visit by our refrigeration technician for the outdoor unit, the pressures and the drains is enough. A single outdoor unit to inspect also means a single visit for the whole building.\u003c\/p\u003e\n\u003cp\u003eA frank word about grants: the AOU45RLXFZ outdoor unit is not listed on Hydro-Québec's LogisVert list and does not carry the ENERGY STAR certification. So we promise you no amount for this model. Its argument lies elsewhere: the proven \u003cstrong\u003eR-410A\u003c\/strong\u003e platform of the RLXFZ series, a single compressor for four units and a warranty of 12 years on the compressor and parts, 6 years on labour, identical to the one offered under the Fujitsu name.\u003c\/p\u003e\n\u003cp\u003eThis 4-zone is made for the owner-occupant or the small investor in Longueuil, in Saint-Hubert or elsewhere on the South Shore who wants a single system to manage, a clean yard and four tenants who set their own comfort. It also suits a triplex with a commercial space on the ground floor, or a large house divided into two units that each have two living areas. If the building is heated with electricity and you insist on a heat pump that keeps its full capacity well below −15 °C, ask us about the same manufacturer's certified cold-climate series; we will tell you frankly which one fits your building.\u003c\/p\u003e\n\u003ch3\u003eA GENERAL AIRSTAGE multi-zone for your fourplex in Longueuil, in Saint-Hubert and everywhere on the South Shore\u003c\/h3\u003e\n\u003cp\u003eAirGreen is an AIRSTAGE Elite Plus installer and an HVAC contractor holding an RBQ licence. We install this 4-zone in Montreal, in Laval, in Longueuil, on the North Shore and on the South Shore. The quote is free: a refrigeration technician comes by, measures each unit, looks at where the four refrigerant lines will run and where the outdoor unit will sit, then hands you a written proposal with the chosen heads.\u003c\/p\u003e\n\u003cp\u003eCall us at 514 316-2973 or request your quote online. The GENERAL brand has existed since 1946 and the company, founded in 1936, marks its 90th year in 2026; the machine we set up at your place is the one Fujitsu installers know by heart, under a name that finally says where it comes from.\u003c\/p\u003e\n","brand":"GENERAL","offers":[{"title":"Default Title","offer_id":67942206275876,"sku":"AOU45RLXFZ-9999","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/00_THERMOPOMPE_MULTIZONE_GENERAL_AIRSTAGE_RLXFZ_4_ZONES_45000_BTU_TETES_9_9_9_9_CARTE_PRINCIPALE_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD_RIVE_NORD_00cab7f0-89e9-4ca6-bfb3-ab3e638ea04f.png?v=1793128171","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-4-tetes-general-airstage-rlxfz-compresseur-45-000-btu-montreal-laval-longueuil-rive-sud-et-rive-nord","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}