In many typical Plateau apartments—with their relatively high ceilings, ceiling moldings, sometimes uneven walls, and patio doors opening onto a backyard—the placement of a wall-mounted heat pump must be carefully chosen. The photo clearly shows a wall-mounted indoor unit installed above a patio door , a very common scenario in Montreal duplexes where every square foot counts.
At AirGreen , we love this type of project: it requires a real attention to detail (clearances, direction of airflow, condensate drainage, aesthetics), while offering an immediate result: comfort in summer and winter , without sacrificing living space.
The installed system: a Fujitsu wall-mounted heat pump (AIRSTAGE range)
The brand is specified: Fujitsu . The unit shown is a wall-mounted unit from the Fujitsu AIRSTAGE family, used in residential settings for air conditioning and heating. When the exact model is not visible in a photo, we remain consistent with the product range: in this case, we are referring to a new-generation Fujitsu wall-mounted heat pump , frequently chosen in urban settings like the Plateau district for its reliability, comfort, and stable temperature control.
This type of device is particularly appreciated for:
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Silence during operation (important in bedrooms, home offices, open living rooms).
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Modulation (the device adjusts its power as needed instead of aggressively switching on and off).
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Comfort in mid-season (spring/autumn) where a heat pump is often the most efficient option.
Why installing above the patio door is a good decision (when done correctly)
At first glance, some landlords hesitate to place a unit above a window. Yet, in many apartments in the Plateau-Mont-Royal, it's the most logical location, for three reasons:
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Optimizing wall space
Between the windows, the bookshelves, the furniture, and sometimes the interior brick walls, there are few "clean" spaces left. Above a patio door, one can reclaim a space that is often unused. -
Efficient air distribution
The blown air spreads well in a main room (living room/dining room) and can reach adjacent areas if the doors and air circulation are favorable. -
Managing pipe passage constraints
The routing of refrigerant lines and condensate drain is often simpler (and more discreet) using a side or top passage, depending on the wall structure and exterior access.
Obviously, this positioning requires rigorous installation: ceiling clearance, access for maintenance, drainage slope, and orientation of the shutter to avoid blowing directly on the occupants.
Visible salient installation details (and what this implies on the construction site)
Several elements in the photo provide information about the actual context of the installation:
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Unit installed very close to the ceiling , with decorative moldings:
We must respect the recommended clearances for the device to function properly (air intake, filter access, internal circulation). In a Montreal apartment, the height is often adjusted to the millimeter to balance performance and aesthetics. -
Installation above a patio door :
This requires attention to airflow: the orientation of the fins is adjusted to avoid a direct airflow towards the passage area, while maximizing the range. -
Urban “plex” environment (brick visible on the exterior):
In this context, the wall penetration and the finishing (pipe covers, sealing, protection against leaks) are essential. Poor sealing around the penetration is often where problems with cold air, humidity, or minor leak noises begin. -
Finishing work around the opening :
It's clear the wall above the door has been prepared/touched up. That's normal: a clean installation also means seamless integration with the decor. At AirGreen, we insist that the final result be "visually clean," not just functional.
Typical steps we follow for this type of installation (Plateau, Rosemont, Ville-Marie)
Without burdening the reader with a technical lesson, here's what makes the difference between a "correct" installation and an AirGreen installation:
1) Location validation (comfort + maintenance)
We are checking:
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Clearances (top, sides, front).
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Accessibility for filter cleaning and seasonal maintenance.
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Ideal direction of airflow depending on the room.
2) Connection passage and drain management
Two critical points:
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Refrigerant lines : the shortest possible route, clean, protected, with careful finishing.
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The condensate drain : continuous slope, secure drainage, prevention of backflow and odors.
3) Serious commissioning
A heat pump performs best when:
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The vacuuming process is well done.
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The connections are checked,
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The operating parameters have been validated.
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And the user receives simple instructions (heating mode, air conditioning mode, maintenance).
Comfort in summer and winter: why Fujitsu is often a winning choice in Montreal
In Greater Montreal, people don't choose a heat pump just to "have air conditioning." They choose it to get through:
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The heavy, humid days of July,
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The cool nights of September,
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Cold spells where supplementary heating may become necessary depending on the model and insulation.
A properly installed Fujitsu wall-mounted heat pump typically offers:
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A stable temperature (fewer variations).
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Gentle operation (fewer cycles).
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A very pleasant feeling of comfort in the living areas.
Instructions for use (simple, but essential)
To ensure consistent performance in a home like this:
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Clean the filters regularly (every 4 to 6 weeks during periods of intensive use).
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When heating, avoid sudden temperature fluctuations (e.g., 18 → 25 → 19). A heat pump prefers stability.
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When air conditioning, aim for a realistic setpoint (often 23–25 °C ): more comfortable, more economical, and less risk of excessive condensation.
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Do not obstruct the airflow (thick curtains, tall furniture directly underneath, etc.).
What this installation actually brings to everyday life
In an urban apartment in Plateau-Mont-Royal, this type of installation is life-changing:
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A comfortable main room , even during heat waves.
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Less humidity , therefore a lighter feeling and better sleep.
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An effective supplementary heating source in the mid-season (and often longer), reducing dependence on other heating sources.
And above all: a system that integrates without invading space, thanks to a strategic location above the patio door.
AirGreen: a clean, local approach designed for Montreal plexes
Montreal is not a “standard market”. Between old walls, structural peculiarities, backyard exits and aesthetic requirements, a residential HVAC installation must be done by a team that truly knows the terrain.
At AirGreen , we install Fujitsu wall-mounted heat pumps throughout Montreal — Plateau-Mont-Royal, Rosemont, Villeray, Ahuntsic, Southwest — as well as in Laval and on the South Shore and North Shore. Our goal is always the same: a high-performing, durable, and clean result , both technically and visually.