Installation of a Fujitsu wall-mounted heat pump in Verdun (Montreal)
AirGreen installed a Fujitsu AIRSTAGE system with an outdoor unit mounted on wall brackets in Verdun. This is an ideal choice for urban environments to minimize snow on the ground, reduce vibrations, and ensure reliable air conditioning and heating comfort year-round.
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In Verdun, many residential buildings have stucco exterior walls, basement windows, and fairly narrow side spaces. This is exactly the kind of configuration where a heat pump installation needs to be designed with the site in mind: clearances, noise, vibrations, drainage, snow load… and a clean finish.
The photo shows the Fujitsu AIRSTAGE outdoor unit mounted on wall brackets , at a low height, near a window, with the electrical disconnect switch within easy reach. At AirGreen , this is an installation we often prefer in urban environments, provided that best practices for performance and durability are followed.
System type: Fujitsu wall-mounted heat pump (mini-split)
The machine is a Fujitsu wall-mounted heat pump (mini-split), therefore a system composed of:
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an indoor wall unit (inside the dwelling) that distributes the air,
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an outdoor unit (the one in the photo) which ensures heat exchange.
This format is ideal for condos, apartments and plexes in Montreal because it allows:
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precise comfort (stable temperature, modulation),
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efficient air conditioning in the summer ,
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efficient heating in mid-season and winter (depending on the range/configuration).
Model: consistent with the Fujitsu AIRSTAGE range
The exact model is not legible in this photo, but the whole is perfectly consistent with a residential Fujitsu AIRSTAGE wall-mounted heat pump , comparable to an installation of the Fujitsu Altair series (R-32), very common for urban projects where reliability, silence and energy efficiency are sought.
In this type of housing, capacities of 9,000 to 18,000 BTU are frequently seen (depending on surface area, insulation, orientation and actual needs).
Visible installation details: what really matters
1) Installation on wall brackets (rather than on the floor)
Note that the outdoor unit is mounted on wall brackets , which offers several advantages in Verdun:
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Ground clearance (useful in narrow passages),
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reduction of risks associated with snow accumulation ,
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better protection against standing water and freeze/thaw cycles.
2) Anti-vibration pads/insulators
We can distinguish the support points that serve to limit the transmission of vibrations to the wall. In dense residential areas, this is an essential detail because:
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reduce structural noise ,
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to improve the comfort of the occupants (and neighbors).
3) Clearance and service access
The unit is installed in such a way as to maintain front access for maintenance (cleaning, inspection, service). We always emphasize this point: a system can be excellent, but if it is poorly positioned, maintenance becomes complicated… and problems arise more quickly.
4) Electrical box / disconnect switch nearby
The box on the right (“disconnect”) is a very important safety and compliance component. A clean installation also means:
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a clear connection,
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a safe route,
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finishes that remain neat over time.
Essential precautions in the Montreal context (snow, ice, drainage)
In Montreal, the outdoor unit must survive the winter, not just “function”:
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Height and clearance : even on wall mounting, we ensure that blown snow, ice and meltwater do not block the exchanger.
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Defrost drainage : In heating mode, the outdoor unit defrosts and discharges water. You must plan where this water will fall to avoid creating an "ice rink" at the base of the wall.
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Anchor stability : plastered wall, masonry, structure behind… we fix correctly, in the right place, with suitable hardware.
It's this kind of detail that makes the difference between an installation that "holds up" and one that remains reliable for years.
Why this type of installation is a good choice in Verdun
In an area like Verdun, several clients want:
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to effectively air-condition in the summer (humidity + heat waves),
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to provide comfortable heating during cooler periods
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avoid noisy temporary solutions,
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to maintain a clean and discreet exterior facade.
A Fujitsu wall-mounted heat pump meets these objectives very well: stable modulation, constant comfort, and a perceived quality that translates into pleasant daily use.
Our AirGreen approach: performance + finish + long term
For this type of project, we don't just install "in the right place". We aim to:
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a robust mechanical assembly (support, vibration, clearances),
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a safe electrical installation
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a thorough commissioning (checks, functional testing),
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a clean and durable finish (so that it stays beautiful, even after several winters).
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).