Installation of a Canair wall-mounted heat pump in Saint-Henri (Southwest)
In Saint-Henri, AirGreen installed a Canair wall-mounted heat pump with an outdoor unit on wall brackets, an ideal approach in an urban environment to maximize space, reduce noise and ensure four-season comfort.
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In an area like Saint-Henri , with its many brick buildings and high-rise apartments, heat pump installation requires a different approach than in a single-family home. Here, we installed a Canair wall-mounted heat pump (residential mini-split system) with an outdoor unit mounted on wall brackets—an ideal solution for saving space, minimizing noise, and ensuring year-round performance.
A logical choice: the Canair wall-mounted heat pump in an urban environment
The type of equipment shown in the photo is a typical compact outdoor unit for a wall-mounted heat pump (mini-split) . This format is particularly well-suited to condos and apartments in Greater Montreal because it allows for:
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efficient heating during the Quebec winter,
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stable air conditioning during heat waves,
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a minimally invasive installation (without a network of conduits),
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an excellent compromise between comfort, fuel consumption and size .
In this project, the exact model is not clearly legible on the outdoor unit. We are therefore deliberately remaining cautious: it is a Canair residential-grade wall-mounted heat pump with Inverter technology , selected for its reliability and its ability to meet the needs of an urban dwelling.
Prominent installation details visible in the photo
This installation features several important technical elements — typical of Montreal buildings:
1) Mounting on sturdy wall brackets
The outdoor unit is installed on metal wall brackets , securely anchored to the masonry. This choice allows for:
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to free up the floor (practical in alleyways, balconies or narrow courtyards),
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to reduce exposure to snow accumulation and splashes,
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to facilitate maintenance and to maintain good air circulation around the device.
2) Vibration and noise management
In urban environments, noise discretion is essential (neighbors, nearby windows, shared walls). We pay particular attention to:
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the addition of anti-vibration elements,
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aligning the unit to prevent any twisting,
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the positioning to limit reverberation on brick and hard surfaces.
3) Restricted space, access and maintenance
The area around the units is cramped, with other equipment present (nearby air conditioning, metal structure). In these contexts, we plan the installation to preserve:
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minimal clearance in front of the gate,
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realistic access for maintenance (cleaning, diagnostics, service),
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a clean route for refrigeration connections and power supply.
4) Building protection and clean finish
On brick, waterproofing and finishing make a big difference. Our approach aims to:
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preserve the building's envelope,
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ensure proper condensate drainage ,
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to maintain a neat and durable installation, even after several freeze/thaw cycles.
The result: four-season comfort, without compromise
Ultimately, this type of installation allows the customer to benefit from:
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of constant comfort (heating and air conditioning),
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a solution adapted to the reality of Saint-Henri: limited space, urban constraints, close proximity to neighbors ,
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of a Canair system installed safely, cleanly and optimized for performance.
At AirGreen , our goal is simple: an installation that respects the building, improves the quality of life and remains reliable for years — particularly in the demanding conditions of Greater Montreal.
The job tools
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.
How the job unfolds
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.
What we check on a job like this one
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
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.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
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).