Installation of a Zephyr wall-mounted heat pump in Plateau-Mont-Royal (Montreal)
AirGreen installed a Zephyr wall-mounted heat pump in a Plateau-Mont-Royal apartment in Montreal. The installation was carefully integrated near a stained-glass window, designed for efficient air distribution, consistent comfort, and an impeccable finish.
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.
In a typical Plateau-Mont-Royal apartment, every detail counts: the ceiling height, the often older walls, and even heritage features (like this stunning stained-glass window) all call for a clean, discreet, and sustainable approach. At AirGreen , we recently installed a Zephyr wall-mounted heat pump (mini-split) to provide year-round comfort without altering the character of the space.
Type of system installed: wall-mounted heat pump (mini-split)
The photo clearly shows a wall-mounted indoor unit : a horizontal format, installed high up, with an air diffuser and temperature display. This is the ideal configuration for efficient heating in the shoulder seasons and winter (depending on the model), and stable, quiet air conditioning in summer.
Brand used: Zephyr (as per the information provided).
Model: Zephyr (residential wall series – visual identification uncertain)
The technical label is present on the right side of the unit, but it is not legible in the photo. We are therefore deliberately remaining cautious: this is a Zephyr wall-mounted heat pump from the residential range , chosen for its compatibility with daily use in Montreal (heating + cooling), and for its sleek design.
Prominent installation details observable
This installation perfectly illustrates what we aim for at AirGreen: performance, aesthetics and optimized air diffusion.
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Positioning at a height , near the ceiling: this promotes better air circulation and a more even distribution in the room.
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Installation near a window (with stained glass): we opted for a logical location to manage temperature variations related to the glazing, while maintaining a clean integration.
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Adequate frontal clearance : the flap and louvers can diffuse air without immediate obstruction, which improves comfort and reduces unnecessary cycles.
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The visual result is very clear : we see an installation designed to “be forgotten”, which is often essential in Montreal interiors with a more traditional feel.
Why a Zephyr in a Montreal apartment?
In areas like the Plateau, needs are rarely “standard”. People want:
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a quiet system (especially in open areas or near a resting area),
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comfortable air conditioning without harsh drafts,
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efficient heating during the transitional seasons and winter, depending on capacity and series,
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and above all a clean installation, because interior aesthetics really matter.
The Zephyr wall-mounted heat pump precisely meets this type of expectation: stable comfort, simple regulation, and a discreet presence on the wall.
Our AirGreen approach: comfort + finish + reliability
A successful installation isn't just about "hanging a head unit on the wall." It's about:
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choose a location that maximizes performance ,
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to ensure air distribution is consistent with the room layout,
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respect the interior environment (moldings, windows, circulation areas),
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and aim for a finish that remains beautiful… even after years.
That is exactly the objective of this project in Plateau: to improve comfort without compromising the style of the accommodation.
Maintenance tips to preserve performance
To keep a Zephyr wall-mounted heat pump in top condition:
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Clean the filters regularly (simple, quick, very cost-effective).
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keep the area in front of the unit clear .
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plan a complete periodic maintenance (deeper cleaning, checks, performance, drainage).
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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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).