Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie (Montreal)
AirGreen installed a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie, with an outdoor unit on a raised and anti-vibration support, for reliable and discreet four-season comfort in an urban environment.
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The job on one screen
The article, chapter by chapter
In Rosemont–La Petite-Patrie, backyards, balconies, and urban terraces often present very real constraints: limited space, close neighbors, aesthetic concerns, and above all… the need for a robust installation that will withstand Montreal winters without flinching. At AirGreen , we recently installed a Zephyr wall-mounted heat pump (residential mini-split), paying particular attention to stability, noise, and clearance around the outdoor unit.
A system designed for four-season comfort in urban environments
A wall-mounted heat pump (mini-split) is one of the most popular solutions in Montreal for a simple reason: it provides air conditioning in the summer and efficient heating for much of the winter, while allowing for precise control of indoor comfort. In a neighborhood like Rosemont, where housing ranges from duplexes and condos to renovations of older buildings, this type of system generally integrates very well, without the need for extensive ductwork.
Here, the installed equipment is a residential range Zephyr (exact model not legible in the photo), typically in a high-efficiency inverter configuration, ideal for maintaining a stable and pleasant temperature, rather than operating in “on or off”.
What the photo reveals: a clean, stable, and well-thought-out outdoor installation
The photo clearly shows the Zephyr outdoor unit (condenser) installed in a typical courtyard/terrace environment:
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Elevated mounting : The unit is placed on a sturdy base, raised off the ground. This is a smart choice in Quebec's climate, as it helps reduce the risks associated with snow accumulation, runoff water, and dirt that can impair long-term performance.
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Anti-vibration pads : you can see the supports under the unit's feet. These elements help to limit vibrations, thus reducing the transmission of noise to the structure (terrace, balcony, foundation) — a crucial point in dense residential areas.
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Discreet placement : the unit is positioned in front of a fence/slats, which is common in urban areas to preserve aesthetics. In this context, our role is to respect the necessary clearances to ensure good air circulation, essential for the system's efficiency and durability.
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Side pipe exit : The refrigerant lines and power supply appear to exit laterally. A well-managed side exit simplifies the finishing process, protects the pipes, and improves the overall appearance of the installation.
Why these details (really) matter for performance
A heat pump is not just about “a good brand”: the quality of installation often makes the difference between a system that performs for 15 years… and a system that starts causing problems far too soon.
At AirGreen, we emphasize simple and essential principles:
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Mechanical stability : a well-fixed and well-supported unit reduces noise, protects the compressor and prevents premature wear.
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Vibration management : essential for acoustic comfort, especially when the unit is near a living space (terrace, patio, neighbor).
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Clearance and air circulation : even in a narrow backyard, minimum spaces must be maintained for the device to breathe properly, otherwise efficiency decreases and the system strains.
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Winter-friendly installation : raised support, judicious positioning, prevention of obstructions — all this helps to maintain good performance when the weather becomes demanding.
The AirGreen advantage: a “clean”, sustainable installation, designed for Montreal
In a neighbourhood like Rosemont–La Petite-Patrie, our clients often look for a solution that combines:
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Real comfort , summer and winter.
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silent operation
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neat exterior aesthetics ,
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and reliability in unforgiving climatic conditions.
This is exactly the approach we apply: we don't just install a Zephyr heat pump — we install it the way it should be installed , taking into account the building, the immediate environment, and the realities of Greater Montreal.
In summary
This Zephyr wall-mounted heat pump installation in Rosemont–La Petite-Patrie perfectly illustrates what we strive for at AirGreen: discreet exterior integration, a solid, elevated base, reduced vibration, and a carefully considered location to preserve performance. The result: a system ready to deliver stable and efficient comfort every day, without compromising on quality of workmanship.
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).