Installation of a Gree wall-mounted air conditioner in Côte-des-Neiges–Notre-Dame-de-Grâce
Installation of a Gree wall-mounted air conditioner in Côte-des-Neiges–Notre-Dame-de-Grâce: comfort, efficiency and careful finishing by AirGreen, HVAC experts in Montreal and the surrounding area.
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.
A discreet and efficient comfort upgrade in the heart of a Montreal condo
At AirGreen , we work weekly in a variety of settings across Greater Montreal, from typical North Shore duplexes to modern condos on the island. This installation took place in an apartment in the Côte-des-Neiges–Notre-Dame-de-Grâce sector, where the client wanted to improve their interior comfort while maintaining an aesthetic and discreet layout.
Choosing the Gree wall-mounted air conditioner
The family approached us for a compact, efficient, and durable solution. After analyzing their needs and configuration, we recommended a latest-generation Gree wall-mounted air conditioner , a unit that's ideal for medium-sized residential spaces.
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Inverter technology : continuously adjusts power to maintain a stable temperature.
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Quiet operation : essential in an open space including dining room and living room.
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Compatibility with energy efficiency programs : several Gree models are eligible for provincial subsidies, a significant advantage in reducing acquisition costs.
Technical details of the HVAC installation
Our team installed the indoor unit on the wall at an optimal height for even air distribution.
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Strategic positioning : above a clear wall, ensuring efficient airflow without interference with furniture.
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Piping route : the refrigeration connections were discreetly hidden and routed by gravity, avoiding the addition of a condensate pump.
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Careful finishing : protective sheaths adapted to the color of the walls in order to preserve the interior aesthetics.
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Electrical safety : dedicated connection, compliant with current standards, directly connected to the panel.
Everything was done in less than a day, without major disruption to the family.
Constraints and solutions provided
Installing a wall unit in a condo always poses specific challenges:
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Small spaces and shared walls : a precise layout is required to avoid any noise pollution and comply with co-ownership regulations.
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Drilling management : the team carefully selected an exterior exit point avoiding existing pipes.
These constraints were overcome thanks to our expertise and detailed planning in advance, ensuring a functional and aesthetic result.
Result for the customer
The customer now benefits from:
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of uniform cooling in summer,
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reduced energy costs thanks to the high efficiency of the system,
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improved comfort in main living areas, without excessive noise or loss of space.
The harmonious integration of the appliance into the interior decor particularly satisfied the family, who can now enjoy their condo in all seasons.
Why choose AirGreen in Montreal, Laval, South Shore and North Shore
Our mission is to offer HVAC installations that combine performance, durability and aesthetics . Each project benefits from:
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of a certified team trained in the latest technologies,
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comprehensive support including advice on available grants,
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of a rapid and respectful intervention of the premises.
Whether it's installing a Gree wall-mounted air conditioner in Montreal, a central heat pump in Laval, or a multi-zone system on the South Shore, we always adapt our solutions to the specific needs of each client.
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.
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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?
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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).