{"product_id":"thermopompe-3-zones-conforto-mhmz-48000-btu-r410a","title":"3-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A","description":"\u003ch2\u003eA cathedral-ceiling living room and two bedrooms, served by the same condenser\u003c\/h2\u003e\n\u003cp\u003eA living room with a cathedral ceiling is often the most beautiful room in the house and the hardest to keep comfortable. Heat rises to the ridge in winter, large windows let the sun in during summer, and the bedrooms, closed and lower, live in a completely different climate. The \u003cstrong\u003e3-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A\u003c\/strong\u003e treats these three spaces separately, with three \u003cstrong\u003ewall heads\u003c\/strong\u003e connected to a single \u003cstrong\u003eMHMZ548DACFC condenser\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003e4-ton\u003c\/strong\u003e condenser serves \u003cstrong\u003e3 zones\u003c\/strong\u003e here and accepts up to \u003cstrong\u003e5\u003c\/strong\u003e at most. The wall heads intended for it are the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e, the \u003cstrong\u003eMHWAL12DACFC\u003c\/strong\u003e and the \u003cstrong\u003eMHWAL24DACFC\u003c\/strong\u003e. Its certified ratings are \u003cstrong\u003e21.8 SEER2\u003c\/strong\u003e, \u003cstrong\u003e11.7 EER2\u003c\/strong\u003e and \u003cstrong\u003e9.8 HSPF2\u003c\/strong\u003e. The system is \u003cstrong\u003eENERGY STAR\u003c\/strong\u003e certified with the \u003cstrong\u003ecold-climate designation\u003c\/strong\u003e under \u003cstrong\u003eENERGY STAR ID 2495078\u003c\/strong\u003e, and it qualifies for a \u003cstrong\u003e$4,320 LogisVert grant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eThe challenge of a high ceiling\u003c\/h3\u003e\n\u003cp\u003eIn a tall room, air settles in layers. Warm air collects under the ceiling, cool air stays at floor level, and your feet can be cold in a room that seems warm on the thermometer. The large glazed areas common in these living rooms add losses in winter and heat gains in summer. A small wall head is not enough to stir such a volume.\u003c\/p\u003e\n\u003cp\u003eThis size therefore targets homes whose main room is large and tall: a bungalow with a cathedral ceiling, a country house with a mezzanine, a living room extended under a sloped roof. The other two zones serve the bedrooms. The load calculation accounts for the room's actual volume, not just its floor area.\u003c\/p\u003e\n\u003ch3\u003eThe MHWAL24DACFC in a large volume\u003c\/h3\u003e\n\u003cp\u003eFor the living room, we plan the \u003cstrong\u003eMHWAL24DACFC\u003c\/strong\u003e, the largest of the intended heads. It is not installed at the top of the wall, where the air is already warm, but at a height that lets it blow toward the occupied zone and remains accessible for filter maintenance. It blows along the length of the room, toward the windows rather than against a wall.\u003c\/p\u003e\n\u003cp\u003eA ceiling fan helps a great deal in these rooms. Set to push air gently downward in winter, it brings the heat collected under the ridge back to the occupied zone and makes the head's work more effective. If your living room already has one, we take it into account when choosing the location.\u003c\/p\u003e\n\u003ch3\u003eThe two bedrooms\u003c\/h3\u003e\n\u003cp\u003eThe bedrooms get smaller heads: the \u003cstrong\u003eMHWAL12DACFC\u003c\/strong\u003e for the main bedroom, the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e for a child's or guest room. Closed at night, they need their own set point, independent of the living room's.\u003c\/p\u003e\n\u003cp\u003eThe three heads share the condenser's capacity. During the day, the living room takes the largest share; at night, the bedrooms do. With 3 zones out of a maximum of 5, two connections remain free to equip another bedroom or an office later, after checking the remaining capacity.\u003c\/p\u003e\n\u003cp\u003eA mezzanine open to the living room is a special case. It benefits from the large room's air in winter, but it collects heat under the roof in summer and quickly becomes the hottest zone in the house. During the visit, we assess whether the living-room head is enough to cover it or whether it deserves its own head on one of the free connections.\u003c\/p\u003e\n\u003ch3\u003eWinter according to the certificate\u003c\/h3\u003e\n\u003cp\u003eThe certificate lists \u003cstrong\u003e36,000 BTU\/h at -8 °C\u003c\/strong\u003e (17 °F), with a \u003cstrong\u003eCOP of 2.30\u003c\/strong\u003e, and \u003cstrong\u003e45,000 BTU\/h at -15 °C\u003c\/strong\u003e (5 °F), with a \u003cstrong\u003eCOP of 2.00\u003c\/strong\u003e. The maximum published capacity is \u003cstrong\u003e45,000 BTU\/h at -15 °C\u003c\/strong\u003e. The two points are measured separately; we report each one as published.\u003c\/p\u003e\n\u003cp\u003eA COP of 2.00 means that at -15 °C, each kilowatt-hour consumed returns two kilowatt-hours of heat, where an electric baseboard returns one. At -8 °C, the ratio rises to 2.30. ENERGY STAR's \u003cstrong\u003ecold-climate designation\u003c\/strong\u003e confirms that the combination meets the low-temperature performance criteria.\u003c\/p\u003e\n\u003cp\u003eThese figures come from certificate \u003cstrong\u003eAHRI 210605819\u003c\/strong\u003e, published by NEEP.\u003c\/p\u003e\n\u003ch3\u003eBackup heat and defrost\u003c\/h3\u003e\n\u003cp\u003eThe certificate does not publish a point colder than -15 °C. In a heavily glazed living room, backup remains worthwhile: the existing \u003cstrong\u003eelectric baseboards\u003c\/strong\u003e or fireplace stay in place, set slightly below the heads' set point, and take over during extreme cold. In cold, humid weather, the condenser also runs \u003cstrong\u003edefrost cycles\u003c\/strong\u003e of a few minutes; the heads then stop blowing warm air and a cloud of vapour rises from the outdoor unit. This is normal.\u003c\/p\u003e\n\u003ch3\u003eThe inverter compressor and its three zones\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003einverter compressor\u003c\/strong\u003e varies its speed according to demand and meters the \u003cstrong\u003eR-410A refrigerant\u003c\/strong\u003e sent to each head. In the living room, it runs for long periods at moderate speed, which keeps the air moving continuously and limits stratification. Shutting off an unoccupied bedroom leaves the other two zones running normally. As on any multi-zone system of this type, the three heads work in the same mode, heating or cooling.\u003c\/p\u003e\n\u003ch3\u003eSummer under a cathedral ceiling\u003c\/h3\u003e\n\u003cp\u003eIn cooling, the system is built around a nominal size of \u003cstrong\u003e48,000 BTU\/h\u003c\/strong\u003e for the three zones. In a tall, glassy living room, sunny afternoons are what count: blinds on the upper windows lighten the load considerably. Extended low-speed operation removes moisture from the air, and each head offers a dehumidification mode for muggy days. The bedrooms, for their part, are cooled for the night without cooling the whole living room.\u003c\/p\u003e\n\u003ch3\u003eThe 21.8 SEER2, 11.7 EER2 and 9.8 HSPF2 ratings\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHSPF2\u003c\/strong\u003e of 9.8 measures heating efficiency over the whole cold season; in Quebec, it is the rating that weighs most on the bill. The \u003cstrong\u003eSEER2\u003c\/strong\u003e of 21.8 measures cooling efficiency over a whole summer, and the \u003cstrong\u003eEER2\u003c\/strong\u003e of 11.7 measures cooling at full load, in hot weather. The \u003cstrong\u003eCOP\u003c\/strong\u003e expresses efficiency at a specific temperature: it is the ratio between heat delivered and electricity consumed.\u003c\/p\u003e\n\u003ch3\u003eThe $4,320 LogisVert grant\u003c\/h3\u003e\n\u003cp\u003eThe system is listed in Hydro-Québec's \u003cstrong\u003eLogisVert\u003c\/strong\u003e program, with \u003cstrong\u003e$4,320\u003c\/strong\u003e for the owner of an existing home, according to the list in effect on the installation date. We confirm eligibility before signing and prepare the detailed invoice, model numbers and proof of payment. Our page on the \u003ca href=\"\/en\/pages\/subvention-thermopompes-efficaces-dhydro-quebec\"\u003eefficient heat pump grant\u003c\/a\u003e summarizes the program's conditions.\u003c\/p\u003e\n\u003ch2\u003eInstallation and maintenance\u003c\/h2\u003e\n\u003ch3\u003eOur installation\u003c\/h3\u003e\n\u003cp\u003eAfter the visit and the load calculation, the condenser is installed above the snow line, on a stand or a sturdy bracket, away from snow sliding off the roof. A 4-ton condenser requires a larger \u003cstrong\u003ededicated circuit\u003c\/strong\u003e than a small wall-mounted heat pump; we check the panel's space and capacity during the visit.\u003c\/p\u003e\n\u003cp\u003eEach head gets its own \u003cstrong\u003erefrigerant line set\u003c\/strong\u003e back to the condenser, grouped in a line cover outdoors, and its own sloped condensate \u003cstrong\u003edrain\u003c\/strong\u003e. Commissioning includes the vacuum, the leak test, a check of each zone and setup of the three remotes with you.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eRinse the filters of all three heads every two weeks in season; the living-room one comes out with a stepladder, hence the importance of its location. Keep the condenser clear of snow and leaves, without covering it in winter. One \u003cstrong\u003eHVAC\u003c\/strong\u003e maintenance visit per year cleans the coils, fans and drains and checks the electrical connections. Our \u003ca href=\"\/en\/pages\/services-de-nettoyage-climatiseurs-et-thermopompes-murales-grand-montreal\"\u003ecleaning service\u003c\/a\u003e takes over when you prefer to hand off the annual visit.\u003c\/p\u003e\n\u003ch3\u003eAirGreen, for the life of the installation\u003c\/h3\u003e\n\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\n\u003cp\u003e\u003cstrong\u003eRequest your free estimate for the 3-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A. We assess your living room and bedrooms and confirm the right size and your grant eligibility before signing.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Conforto","offers":[{"title":"Default Title","offer_id":67797774074148,"sku":"MHMZ548DACFC","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/THERMOPOMPE_MULTIZONE_CONFORTO_MAXIMUM_MHMZ_R410A_3_ZONES_4_TONNES_48000_BTU_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082560","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-3-zones-conforto-mhmz-48000-btu-r410a","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}