{"title":"CONFORTO Dual-Zone Heat Pump | Installation in Montreal, Laval, Longueuil, South Shore \u0026 North Shore","description":null,"products":[{"product_id":"thermopompe-2-zones-conforto-mhmz-18000-btu-r410a","title":"2-Zone Heat Pump CONFORTO MHMZ | 18,000 BTU - R410A","description":"\u003ch2\u003eTwo small rooms, two identical heads and a condenser sized to match\u003c\/h2\u003e\n\u003cp\u003eNot every home needs a large system. Two bedrooms that overheat in summer, a bedroom and a home office, the two closed rooms of a condo: for these modest needs, the right unit is the one that matches the actual load, not the biggest one. The \u003cstrong\u003e2-Zone Heat Pump CONFORTO MHMZ | 18,000 BTU - R410A\u003c\/strong\u003e feeds two \u003cstrong\u003ewall heads\u003c\/strong\u003e from a single \u003cstrong\u003eMHMZ218DACFC condenser\u003c\/strong\u003e, compact and sized for two small rooms.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003e1.5-ton\u003c\/strong\u003e condenser serves \u003cstrong\u003e2 zones\u003c\/strong\u003e, which is its maximum of 2. The wall head intended for it is the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e, installed in each of the two rooms. Its certified ratings are \u003cstrong\u003e22.0 SEER2\u003c\/strong\u003e, \u003cstrong\u003e12.5 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 4480247\u003c\/strong\u003e, and it qualifies for a \u003cstrong\u003e$1,800 LogisVert grant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eThe right size for two small rooms\u003c\/h3\u003e\n\u003cp\u003eA heat pump that is too large for its room heats or cools quickly, stops, then starts again. These short cycles wear out the unit, leave the air humid in summer and create temperature swings. A condenser sized to the rooms instead runs for long periods at low speed, which gives more even comfort and drier air.\u003c\/p\u003e\n\u003cp\u003eThis size therefore targets two modest rooms: two bedrooms in a \u003cstrong\u003e4 ½\u003c\/strong\u003e or a \u003cstrong\u003e5 ½\u003c\/strong\u003e, a bedroom and an office, a basement bedroom and a workroom. In a well-insulated home, the two heads cover most of the year in these rooms. In an older house, the \u003cstrong\u003eelectric baseboards\u003c\/strong\u003e stay in place for deep cold. The load calculation confirms the choice during the visit.\u003c\/p\u003e\n\u003cp\u003eWe are often asked whether a single head, mounted in the hallway between the two rooms, would do the job. With the door open, a little air circulates; with the door closed to sleep or work, almost nothing gets through. One head per room is the only way to guarantee each its own temperature, and that is exactly what a two-zone condenser allows.\u003c\/p\u003e\n\u003ch3\u003eTwo MHWAL09DACFC heads, two set points\u003c\/h3\u003e\n\u003cp\u003eBoth rooms get the same head, the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e, each with its own remote and set point. You can keep the office comfortable during the day and the bedroom cool at night, or shut off an unoccupied zone entirely without touching the other.\u003c\/p\u003e\n\u003cp\u003eThe two heads share the condenser's capacity: when both call at full demand, it is split between them; when only one room is occupied, it benefits from the available capacity. With 2 zones out of a maximum of 2, every connection is used. If a third room needs to be equipped one day, another unit will be required; we tell you before signing, so the choice is made with full knowledge.\u003c\/p\u003e\n\u003ch3\u003eSleep, the first argument\u003c\/h3\u003e\n\u003cp\u003eIn a bedroom, it is the night that judges a system. The \u003cstrong\u003einverter compressor\u003c\/strong\u003e slows down as soon as the set point is reached and holds the temperature without abrupt starts. In summer, extended low-speed operation removes moisture from the air, which lets you sleep cool without setting the set point too low. For cooling, the system is built around a nominal size of \u003cstrong\u003e18,000 BTU\/h\u003c\/strong\u003e shared between the two rooms.\u003c\/p\u003e\n\u003cp\u003eCompared with a window air conditioner, the difference is clear: the condenser and its compressor are outside, the window stays free and locks, and only a flow of air remains in the room. We mount each head high on the wall so the air sweeps the room without blowing directly on the bed.\u003c\/p\u003e\n\u003ch3\u003eIn the cold, more capacity than the nominal size\u003c\/h3\u003e\n\u003cp\u003eThe certificate lists \u003cstrong\u003e15,000 BTU\/h at -8 °C\u003c\/strong\u003e (17 °F), with a \u003cstrong\u003eCOP of 2.50\u003c\/strong\u003e, and \u003cstrong\u003e19,700 BTU\/h at -15 °C\u003c\/strong\u003e (5 °F), with a \u003cstrong\u003eCOP of 1.90\u003c\/strong\u003e. It also publishes a maximum capacity of \u003cstrong\u003e20,000 BTU\/h at -15 °C\u003c\/strong\u003e, with a \u003cstrong\u003eCOP of 1.83\u003c\/strong\u003e. The two points are measured separately; we report each one as published.\u003c\/p\u003e\n\u003cp\u003eThe figure at -15 °C exceeds the 18,000 BTU nominal size. This is not an error: in cold weather, the inverter compressor can run faster than its reference speed to offset the home's heat losses. A COP of 1.90 means that at that temperature, each kilowatt-hour consumed returns 1.90 kilowatt-hours of heat, where a baseboard returns one. 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 210605810\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. We therefore recommend keeping the existing baseboards, set slightly below the heads' set point: they stay off most of the time and only 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\u003eInverter technology and R-410A refrigerant\u003c\/h3\u003e\n\u003cp\u003eThe condenser meters the \u003cstrong\u003eR-410A refrigerant\u003c\/strong\u003e sent to each head according to its demand and adjusts the compressor speed accordingly. The two heads always work in the same mode, heating or cooling, as on any multi-zone system of this type. For two neighbouring rooms living through the same season, this rule goes unnoticed.\u003c\/p\u003e\n\u003ch3\u003eThe 22.0 SEER2, 12.5 EER2 and 9.8 HSPF2 ratings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2\u003c\/strong\u003e: cooling efficiency over a whole summer.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2\u003c\/strong\u003e: cooling at full load, in hot weather.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2\u003c\/strong\u003e: heating efficiency over the whole cold season, the rating that weighs most on the bill in Quebec.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP\u003c\/strong\u003e: the ratio between heat delivered and electricity consumed at a specific temperature, here 2.50 at -8 °C and 1.90 at -15 °C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe $1,800 LogisVert grant\u003c\/h3\u003e\n\u003cp\u003eThe system is listed in Hydro-Québec's \u003cstrong\u003eLogisVert\u003c\/strong\u003e program, with \u003cstrong\u003e$1,800\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\u003eAn installation in a condo or a house\u003c\/h2\u003e\n\u003ch3\u003eOur installation\u003c\/h3\u003e\n\u003cp\u003eIn a condo, the condenser's location and drilling through exterior walls often fall under the syndicate's authority; check the declaration of co-ownership and obtain approval before the work. The compact condenser is installed on a balcony, on a wall bracket or on a stand, always above the snow line and sheltered from snow sliding off the roof.\u003c\/p\u003e\n\u003cp\u003eEach head gets its own \u003cstrong\u003erefrigerant line set\u003c\/strong\u003e back to the condenser, protected by a line cover outdoors, and its own sloped condensate \u003cstrong\u003edrain\u003c\/strong\u003e. The condenser is connected to a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e, checked at the panel during the visit. Commissioning includes the vacuum, the leak test, a check of both zones and setup of the remotes with you.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eRinse the filters of both heads every two weeks in season; they come out by hand, without tools. Keep the condenser clear of snow, ice and leaves, without covering it in winter: it heats in January too. 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 2-Zone Heat Pump CONFORTO MHMZ | 18,000 BTU - R410A. We assess your two rooms 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":67797750317348,"sku":"MHMZ218DACFC","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_2_ZONES_1_5_TONNES_18000_BTU_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082560"},{"product_id":"thermopompe-2-zones-conforto-mhmz-27000-btu-r410a","title":"2-Zone Heat Pump CONFORTO MHMZ | 27,000 BTU - R410A","description":"\u003ch2\u003eThe living room and the bedroom, heated and cooled with high seasonal ratings\u003c\/h2\u003e\n\u003cp\u003eWhen you replace baseboards with a heat pump, what counts is the heating bill for the whole season, not the performance on a single day. The \u003cstrong\u003e2-Zone Heat Pump CONFORTO MHMZ | 27,000 BTU - R410A\u003c\/strong\u003e brings a living space and a bedroom together on a single \u003cstrong\u003eMHMZ327DACFC condenser\u003c\/strong\u003e, with two \u003cstrong\u003ewall heads\u003c\/strong\u003e of different sizes and high seasonal ratings in both heating and cooling.\u003c\/p\u003e\n\u003cp\u003eThe condenser serves \u003cstrong\u003e2 zones\u003c\/strong\u003e here and accepts up to \u003cstrong\u003e3\u003c\/strong\u003e at most. The wall heads intended for it are the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e and the \u003cstrong\u003eMHWAL18DACFC\u003c\/strong\u003e. Its certified ratings are \u003cstrong\u003e23.0 SEER2\u003c\/strong\u003e, \u003cstrong\u003e12.5 EER2\u003c\/strong\u003e and \u003cstrong\u003e10.6 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 2495138\u003c\/strong\u003e, and it qualifies for a \u003cstrong\u003e$3,192 LogisVert grant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTwo rooms, two heads of different sizes\u003c\/h3\u003e\n\u003cp\u003eA living space and a bedroom do not have the same needs. The living room, often open to the kitchen, has more floor area, more windows and more occupants; the bedroom is small, closed and used mostly at night. The two intended heads follow that difference. The \u003cstrong\u003eMHWAL18DACFC\u003c\/strong\u003e, the larger, goes in the living space; the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e, the smaller, in the bedroom.\u003c\/p\u003e\n\u003cp\u003eThis uneven split avoids two common mistakes: a head too small for the living room, which strains without ever catching up to the set point, and a head too large for the bedroom, which constantly starts and stops and removes moisture poorly. The condenser then distributes its capacity according to each head's actual demand. The combination is confirmed during the visit, after the load calculation.\u003c\/p\u003e\n\u003ch3\u003eWhat 10.6 HSPF2 and 23.0 SEER2 mean\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHSPF2\u003c\/strong\u003e measures heating efficiency over a whole cold season, taking mild days as well as cold days into account. The higher it is, the less each unit of heat costs in electricity over the whole winter. At 10.6, it is the rating to look at first for a Quebec home, where heating weighs much more than cooling.\u003c\/p\u003e\n\u003cp\u003eWhy a seasonal rating rather than a single figure: a heat pump spends most of the winter at moderate temperatures, in October, November, March or April, when it runs at reduced speed. A high seasonal rating reflects precisely that part-load efficiency, the kind that repeats day after day. The certified deep-cold points, presented below, complete the picture for the weeks of January and February.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSEER2\u003c\/strong\u003e does the same for summer: it measures cooling efficiency over the whole warm season. At 23.0, cooling the living room and the bedroom weighs little on the bill. The \u003cstrong\u003eEER2\u003c\/strong\u003e of 12.5 measures cooling at full load during a heat wave. Finally, the \u003cstrong\u003eCOP\u003c\/strong\u003e gives the efficiency at a specific temperature.\u003c\/p\u003e\n\u003ch3\u003eFor which homes\u003c\/h3\u003e\n\u003cp\u003eThis size suits a condo whose living room and main bedroom are separate, the ground floor of a bungalow, or a semi-detached where the living space and one bedroom carry most of the comfort. In a well-insulated home, the two heads can become the main heat source for these rooms. In an older house, the \u003cstrong\u003eelectric baseboards\u003c\/strong\u003e stay in place for deep cold, and we calculate the share the heat pump can take on.\u003c\/p\u003e\n\u003ch3\u003eWinter according to the certificate\u003c\/h3\u003e\n\u003cp\u003eThe certificate lists \u003cstrong\u003e26,600 BTU\/h at -8 °C\u003c\/strong\u003e (17 °F), with a \u003cstrong\u003eCOP of 2.30\u003c\/strong\u003e, and \u003cstrong\u003e25,000 BTU\/h at -15 °C\u003c\/strong\u003e (5 °F), with a \u003cstrong\u003eCOP of 1.80\u003c\/strong\u003e. The maximum published capacity is \u003cstrong\u003e25,000 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\u003eAt -8 °C, the condenser keeps 99% of its 27,000 BTU nominal size, and it retains most of it at -15 °C. A COP of 2.30 means that at -8 °C, each kilowatt-hour consumed returns 2.30 kilowatt-hours of heat, where a baseboard returns one. 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 210605813\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. We therefore recommend keeping the existing baseboards as backup, set slightly below the heads' set point: they stay off most of the time and only serve 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, room by room\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003einverter compressor\u003c\/strong\u003e varies its speed instead of starting and stopping. It meters the \u003cstrong\u003eR-410A refrigerant\u003c\/strong\u003e sent to each head according to its demand: when the bedroom reaches its set point, it slows down while the living room keeps going. The two heads share the condenser's capacity when they call together.\u003c\/p\u003e\n\u003cp\u003eAs on any multi-zone system of this type, the two heads work in the same mode, heating or cooling. A living space and a bedroom live through the same season; this rule goes unnoticed.\u003c\/p\u003e\n\u003ch3\u003eSummer in the living room and the bedroom\u003c\/h3\u003e\n\u003cp\u003eIn cooling, the system is built around a nominal size of \u003cstrong\u003e27,000 BTU\/h\u003c\/strong\u003e, distributed between the two rooms. In the afternoon, the large living-room head does most of the work; at night, it is the small bedroom head. Extended low-speed operation removes moisture from the air, which keeps both rooms comfortable without an overly low set point. Each head also offers a dehumidification mode for muggy days.\u003c\/p\u003e\n\u003ch3\u003eThe $3,192 LogisVert grant\u003c\/h3\u003e\n\u003cp\u003eThe system is listed in Hydro-Québec's \u003cstrong\u003eLogisVert\u003c\/strong\u003e program, with \u003cstrong\u003e$3,192\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\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eVisit and load calculation\u003c\/strong\u003e: we measure both rooms and note the windows and insulation.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCondenser\u003c\/strong\u003e: above the snow line, on a wall bracket or a stand, sheltered from snow sliding off the roof.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRefrigerant lines\u003c\/strong\u003e: one set per head back to the condenser, protected by a line cover outdoors.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDrains\u003c\/strong\u003e: one sloped condensate drain per head.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eElectrical\u003c\/strong\u003e: a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e for the condenser, checked at the panel during the visit.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommissioning\u003c\/strong\u003e: vacuum, leak test, check of both zones and setup of the remotes with you.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eA third zone possible later\u003c\/h3\u003e\n\u003cp\u003eWith 2 zones out of a maximum of 3, the condenser keeps one connection free. A child's bedroom, an office or a basement room could be added one day. Before any addition, we check that the remaining capacity is enough for the new room without shortchanging the first two, and that the combination follows the manufacturer's rules.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eRinse the filters of both heads every two weeks in season; the living-room one, near the kitchen, gets dirty faster. 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 2-Zone Heat Pump CONFORTO MHMZ | 27,000 BTU - R410A. We assess your living room and your bedroom 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":67797750382884,"sku":"MHMZ327DACFC","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_2_ZONES_27000_BTU_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082560"},{"product_id":"thermopompe-2-zones-conforto-mhmz-36000-btu-r410a","title":"2-Zone Heat Pump CONFORTO MHMZ | 36,000 BTU - R410A","description":"\u003ch2\u003eThe ground floor and the attic floor, each with its own head, even during heat waves\u003c\/h2\u003e\n\u003cp\u003eA floor finished under the roof is often the most pleasant room in the house in spring and the most uncomfortable in July. The sun heats the roof all day, and heat builds up under the sloped ceilings long after sunset. The \u003cstrong\u003e2-Zone Heat Pump CONFORTO MHMZ | 36,000 BTU - R410A\u003c\/strong\u003e gives that floor its own \u003cstrong\u003ewall head\u003c\/strong\u003e, another on the ground floor, and connects them to a single \u003cstrong\u003eMHMZ436DACFC condenser\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003e3-ton\u003c\/strong\u003e condenser serves \u003cstrong\u003e2 zones\u003c\/strong\u003e here and accepts up to \u003cstrong\u003e4\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\u003eMHWAL18DACFC\u003c\/strong\u003e. Its certified ratings are \u003cstrong\u003e22.2 SEER2\u003c\/strong\u003e, \u003cstrong\u003e13.6 EER2\u003c\/strong\u003e and \u003cstrong\u003e10.3 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 2495072\u003c\/strong\u003e, and it qualifies for a \u003cstrong\u003e$3,960 LogisVert grant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eA floor under the roof, the hardest to cool\u003c\/h3\u003e\n\u003cp\u003eAn attic converted into a main bedroom, a mezzanine turned into an office, the upper floor of a Cape Cod-style house: these spaces share low walls, sloped ceilings and a roof directly overhead. In summer, they take the roof's heat before every other room. In winter, they lose their own through the same roof if the insulation is thin.\u003c\/p\u003e\n\u003cp\u003eA head on the ground floor cannot cool an upper floor: cold air sinks, it does not rise. That is why this system places a head on each level. The ground-floor one serves the living space; the upper one, the bedrooms or the office under the roof. The load calculation takes the roof insulation into account, and we tell you plainly if it limits the result.\u003c\/p\u003e\n\u003cp\u003eHumidity adds to the heat. Under the roof, warm, damp air makes sleep difficult even when the thermometer seems reasonable. By running for long periods at low speed, the upstairs head removes that moisture, and its dehumidification mode helps on muggy days when full cooling is not needed.\u003c\/p\u003e\n\u003ch3\u003eWhat 13.6 EER2, 22.2 SEER2 and 10.3 HSPF2 measure\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEER2\u003c\/strong\u003e measures cooling efficiency at full load, in hot weather. That is exactly the situation of a floor under the roof in July, when the head runs flat out during the hottest hours. At 13.6, this rating is the system's strong point for heat waves.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEER2\u003c\/strong\u003e of 22.2 measures cooling efficiency over a whole summer, mild days included. The \u003cstrong\u003eHSPF2\u003c\/strong\u003e of 10.3 does the same for heating over the whole cold season; in Quebec, it is the rating that weighs most on the annual bill. Finally, 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\u003eTwo zones, two heads to choose\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMHWAL18DACFC\u003c\/strong\u003e, the largest of the three intended heads, usually goes in the ground-floor living space. Upstairs, the choice depends on floor area and exposure: the \u003cstrong\u003eMHWAL12DACFC\u003c\/strong\u003e for a main bedroom under the roof, the MHWAL18DACFC if the floor is open and very exposed, the \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e for a small office. The load calculation decides.\u003c\/p\u003e\n\u003cp\u003eThe two heads share the condenser's capacity. On a summer afternoon, the upper floor asks for the largest share; on a winter evening, it is often the ground floor. With 2 zones out of a maximum of 4, two connections remain free for rooms added later, after checking the remaining capacity.\u003c\/p\u003e\n\u003ch3\u003ePlacing a head under a sloped ceiling\u003c\/h3\u003e\n\u003cp\u003eUnder the roof, there is often little space at the top of the walls. We install the head on the gable wall or the tallest wall, so it blows along the length of the floor rather than against a slope. It needs enough space above it for the air intake. When the floor is divided into two bedrooms, the head goes in the larger or more exposed one, and we tell you whether the second bedroom will be well served with the door open or deserves its own zone.\u003c\/p\u003e\n\u003ch3\u003eWinter: the full nominal size at -15 °C\u003c\/h3\u003e\n\u003cp\u003eThe certificate lists \u003cstrong\u003e33,000 BTU\/h at -8 °C\u003c\/strong\u003e (17 °F), with a \u003cstrong\u003eCOP of 2.40\u003c\/strong\u003e, and \u003cstrong\u003e36,000 BTU\/h at -15 °C\u003c\/strong\u003e (5 °F), with a \u003cstrong\u003eCOP of 1.90\u003c\/strong\u003e. The maximum published capacity is \u003cstrong\u003e36,000 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\u003eAt -15 °C, the condenser therefore delivers 100% of its nominal size. A COP of 1.90 means that at that temperature, each kilowatt-hour consumed returns 1.90 kilowatt-hours of heat, where an electric baseboard returns one. 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 210605816\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. We therefore recommend keeping the existing \u003cstrong\u003eelectric baseboards\u003c\/strong\u003e, set slightly below the heads' set point. They stay off for most of the winter and only 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 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 R-410A refrigerant\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003einverter compressor\u003c\/strong\u003e varies its speed according to the demand of the two heads and meters the \u003cstrong\u003eR-410A refrigerant\u003c\/strong\u003e sent to each one. It runs for long periods at moderate speed, which removes moisture from the air in cooling and keeps temperatures steady in heating. For cooling, the system is built around a nominal size of \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e. The two heads always work in the same mode, heating or cooling, as on any multi-zone system of this type.\u003c\/p\u003e\n\u003ch3\u003eThe $3,960 LogisVert grant\u003c\/h3\u003e\n\u003cp\u003eThe system is listed in Hydro-Québec's \u003cstrong\u003eLogisVert\u003c\/strong\u003e program, with \u003cstrong\u003e$3,960\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 on two levels\u003c\/h2\u003e\n\u003ch3\u003eOur installation\u003c\/h3\u003e\n\u003cp\u003eThe refrigerant line for the ground-floor head is short. The one for the upper floor runs up the facade in a painted line cover, or goes through the attic or a closet when the house allows it; we show you the route before drilling. Each head gets its own \u003cstrong\u003erefrigerant line set\u003c\/strong\u003e and its own condensate \u003cstrong\u003edrain\u003c\/strong\u003e, sloped toward the outside.\u003c\/p\u003e\n\u003cp\u003eThe condenser is installed above the snow line, on a wall bracket or a stand, away from snow sliding off the roof. It is connected to a \u003cstrong\u003ededicated circuit\u003c\/strong\u003e, checked at the panel during the visit. Commissioning includes the vacuum, the leak test, a check of both zones and setup of the remotes with you.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eRinse the filters of both heads every two weeks in season; the upstairs one works hard in summer and deserves particular attention. 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 2-Zone Heat Pump CONFORTO MHMZ | 36,000 BTU - R410A. We assess both levels 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":67797761229092,"sku":"MHMZ436DACFC","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_2_ZONES_3_TONNES_36000_BTU_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082560"},{"product_id":"thermopompe-2-zones-conforto-mhmz-48000-btu-r410a","title":"2-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A","description":"\u003ch2\u003eAn intergenerational home, two households, two settings and a single condenser\u003c\/h2\u003e\n\u003cp\u003eWhen parents move into a suite finished in the basement or in an addition, the house shelters two households with neither the same schedules nor the same idea of a comfortable temperature. The \u003cstrong\u003e2-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A\u003c\/strong\u003e gives each one its own \u003cstrong\u003ewall head\u003c\/strong\u003e and its own remote, fed by a single \u003cstrong\u003eMHMZ548DACFC condenser\u003c\/strong\u003e installed outside.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003e4-ton\u003c\/strong\u003e condenser serves \u003cstrong\u003e2 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\u003eTwo households under one roof\u003c\/h3\u003e\n\u003cp\u003eIn an intergenerational home, needs differ from one floor to the next. Grandparents often prefer a warmer house and spend their days at home; the family on the ground floor leaves in the morning and comes back in the evening. A single set point for the whole house is bound to leave someone unhappy. With two zones, each household sets its own unit as it sees fit, without negotiating over a thermostat.\u003c\/p\u003e\n\u003cp\u003eThis size also suits any house that divides into two large, well-separated spaces: an open ground floor and a finished basement, a house and its addition, or a large single-storey house whose bedroom wing is closed off. The load calculation for each space confirms that the size is right.\u003c\/p\u003e\n\u003ch3\u003eTwo large heads\u003c\/h3\u003e\n\u003cp\u003eFor the main living space, often open to the kitchen, we usually plan the \u003cstrong\u003eMHWAL24DACFC\u003c\/strong\u003e, the largest of the intended heads. The second unit gets the head that matches its load: another MHWAL24DACFC if it is just as large, the \u003cstrong\u003eMHWAL12DACFC\u003c\/strong\u003e if it is a more compact studio. The \u003cstrong\u003eMHWAL09DACFC\u003c\/strong\u003e is better suited to small closed rooms.\u003c\/p\u003e\n\u003cp\u003eThe two heads share the condenser's capacity. When both units call at full demand, it is split between them; when only one is occupied, it gets all the available capacity. With 2 zones out of a maximum of 5, three connections remain free to equip closed bedrooms later, after checking the remaining capacity.\u003c\/p\u003e\n\u003ch3\u003eA single mode for both units\u003c\/h3\u003e\n\u003cp\u003eThere is one thing to know before choosing this system: the heads on the same condenser always work in the same mode, all heating or all cooling. Each household sets its own temperature, but not the mode. In practice, both units live through the same season and the question rarely comes up; it can, however, arise on a few spring or fall days. We discuss it during the visit to agree with you on how to handle those days.\u003c\/p\u003e\n\u003cp\u003eThe solution is usually simple. On a mild day when one unit needs a little heat and the other does not, the second unit's head can be turned off or switched to fan mode while the first keeps heating. Each unit keeps its own remote, which prevents one household from unintentionally changing the other's setting.\u003c\/p\u003e\n\u003ch3\u003eWhat the certificate shows for winter\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\u003eThe -15 °C point corresponds to 94% of the 48,000 BTU nominal size. At that temperature, a COP of 2.00 means that each kilowatt-hour consumed returns two kilowatt-hours of heat, where an electric baseboard returns one. 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 during deep cold\u003c\/h3\u003e\n\u003cp\u003eThe certificate does not publish a point colder than -15 °C. In a unit occupied by older people, we are particularly keen on keeping the backup in place: the existing \u003cstrong\u003eelectric baseboards\u003c\/strong\u003e, set slightly below the heads' set point, stay off most of the time and take over during extreme cold. They also fill in the \u003cstrong\u003edefrost cycles\u003c\/strong\u003e, those few minutes when the condenser melts the frost off its coil and the heads stop blowing warm air. A cloud of vapour above the outdoor unit is normal at those times.\u003c\/p\u003e\n\u003ch3\u003eThe inverter compressor between two units\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003einverter compressor\u003c\/strong\u003e varies its speed according to the demand of the two heads and meters the \u003cstrong\u003eR-410A refrigerant\u003c\/strong\u003e sent to each one. During the day, it runs slowly for the only occupied unit; in the evening, it speeds up when both households are home. This continuous operation keeps temperatures steady and avoids the repeated starts that wear out equipment.\u003c\/p\u003e\n\u003ch3\u003eSummer in both units\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 two zones. On the ground floor, the windows and the kitchen load the room; in the basement, it is mostly humidity. Extended low-speed operation removes that moisture, and each head's dehumidification mode helps on muggy days.\u003c\/p\u003e\n\u003ch3\u003eThe 21.8 SEER2, 11.7 EER2 and 9.8 HSPF2 ratings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSEER2\u003c\/strong\u003e: cooling efficiency over a whole summer.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEER2\u003c\/strong\u003e: cooling at full load, in hot weather.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHSPF2\u003c\/strong\u003e: heating efficiency over the whole cold season, the rating that weighs most on the bill of an electrically heated home.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCOP\u003c\/strong\u003e: the ratio between heat delivered and electricity consumed at a specific temperature, here 2.30 at -8 °C and 2.00 at -15 °C.\u003c\/li\u003e\n\u003c\/ul\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 and from bedroom windows. 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, protected by a line cover outdoors. For a basement unit, the line goes through the foundation wall and the condensate \u003cstrong\u003edrain\u003c\/strong\u003e often needs a small pump, for lack of a natural slope; we determine that during the visit. Commissioning includes the vacuum, the leak test, a check of both zones and setup of the remotes with each household.\u003c\/p\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eRinse the filters of both heads every two weeks in season; in an intergenerational home, agree on who takes care of each head. 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 2-Zone Heat Pump CONFORTO MHMZ | 48,000 BTU - R410A. We assess both units 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":67797773713700,"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_2_ZONES_4_TONNES_48000_BTU_00_MONTREAL_LAVAL_LONGUEUIL_RIVE_SUD.png?v=1793082560"}],"url":"https:\/\/airgreen.ca\/en\/collections\/thermopompe-doublezone-conforto-installation-montreal-laval-longueuil-rive-sud-rive-nord.oembed","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}