Installation of a Gree wall-mounted heat pump in Côte-des-Neiges
AirGreen installs a Gree wall-mounted heat pump in Côte-des-Neiges. Four-season comfort and professional HVAC installation in Montreal, Laval, Longueuil, North Shore, and South Shore.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
An HVAC project designed to optimize the interior comfort of a Montreal apartment
At AirGreen , we know that well-calibrated thermal comfort transforms our clients' daily lives. In an apartment located in Côte-des-Neiges , we installed a Gree wall-mounted heat pump , perfectly integrated into the main living space. This project illustrates our expertise in HVAC installation in urban buildings, where every detail counts to ensure performance, aesthetics, and energy efficiency.
Background and choice of equipment
In this home, the owners were looking for a compact, quiet solution that would provide efficient heating in winter while ensuring effective air conditioning in summer. The Gree wall-mounted heat pump , renowned for its reliability and high-efficiency technology, was the ideal choice.
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Type : wall-mounted heat pump (mini-split)
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Brand : Gree
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Capacity : 12,000 BTU, perfectly suited to the combined living and dining room area
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Technology : Inverter compressor offering fine modulation for constant comfort and significant energy savings
The particularities of the installation
Strategic interior location
The interior head was installed high up, centered on the main wall of the living room. This positioning allows for optimal air diffusion , avoiding cold or overheated areas. It remains visually discreet and does not interfere with furniture or circulation.
Discreet integration
The mountings were carefully executed, with no significant aesthetic impact on the wall. The carefully concealed refrigeration ducts connect to the outdoor unit via a short route, limiting energy efficiency losses.
Compliance with safety standards
A smoke detector already installed on the wall was kept in place and kept completely clear, in accordance with safety standards. The installation was carried out without compromising fire safety or the apartment's existing systems.
Benefits for the customer
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Four-season comfort : efficient heating even in extreme cold, rapid cooling during heat waves.
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Energy savings : Inverter compressor modulation reduces on/off cycles and lowers consumption.
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Quiet operation : ideal for an urban apartment where peace and quiet are precious.
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Grant eligibility : thanks to its low-temperature performance, this heat pump can benefit from Quebec's financial assistance programs for the energy transition.
Progress of the AirGreen project
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Initial assessment : analysis of the housing configuration and calculation of thermal loads.
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Equipment selection : recommendation of the Gree heat pump adapted to the customer's needs and budget.
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Installation : fixing the interior head, precise drilling, installation of refrigeration pipes and electrical wiring.
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Performance tests : pressure verification, system calibration and heating and cooling mode testing.
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Customer training : explanation of operation, maintenance advice and information on available subsidies.
AirGreen, a trusted partner for your HVAC projects in Montreal
With recognized expertise in the installation of wall-mounted heat pumps in Greater Montreal, we offer tailor-made solutions, adapted to each building and each lifestyle. Whether in Montreal, Laval, Longueuil, on the North Shore or the South Shore , we offer:
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a turnkey service (installation, maintenance, repair),
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comprehensive assistance for government grants,
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facilities that meet the highest safety and performance standards.
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
Which type of equipment for your project?
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Four mistakes we do not make
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What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).