Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie (Montreal)
In Rosemont–La Petite-Patrie, we installed a Zephyr wall-mounted heat pump with an outdoor unit on wall brackets, seamlessly integrated into the brick façade. A compact and efficient solution for improving residential comfort in all seasons, with an installation designed specifically for Montreal's climate.
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The article, chapter by chapter
In many residential buildings in Rosemont–La Petite-Patrie, the challenge is often the same: improving comfort in both summer and winter without cluttering the space, while respecting the aesthetics of the façade and the constraints of a balcony or entrance. For this project, we installed a Zephyr wall-mounted heat pump ( mini-split type) with particular attention to integration, noise, and durability—essential elements for an urban environment.
A typical condo project: maximum comfort, minimal space
Here, we're clearly in a "renovated condo/plex" context: brick facade, access near a door, metal railing, and an exterior area where every centimeter counts. The client wanted:
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effective cooling during heat waves,
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an efficient auxiliary heater for transitional periods (and a large part of the winter),
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a clean , discreet, and vibration-free installation.
The chosen solution: a Zephyr wall-mounted heat pump , well-sized for a main area (open-plan living room/kitchen, for example), with a compact outdoor unit.
Type of machine installed: wall-mounted heat pump (mini-split)
Based on the visible configuration, this appears to be a classic residential wall-mounted installation:
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An outdoor unit (condenser) installed in the immediate vicinity of the dwelling;
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A refrigeration connection (piping) and communication/power cables that connect the outdoor unit to the indoor head (not visible in the photo).
This type of system is very popular in Montreal because it combines:
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a quick response (the effect is felt within minutes),
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superior energy efficiency compared to several direct electrical solutions,
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comfort that can be adjusted room by room (depending on the configuration).
Brand: Zephyr (used as the primary reference)
The brand installed for this project is Zephyr . At AirGreen, we regularly meet customers who are looking for a good balance between performance , comfort and value — and Zephyr often fits very well into this logic, especially when it is installed according to best practices and with careful finishing details.
Model: not visible in the photo — consistent selection “Zephyr high efficiency”
The exact model number is not legible in the image. We therefore present this installation as a high-efficiency Zephyr wall-mounted heat pump (residential category), typically chosen in a capacity appropriate to the space (often 9,000 to 18,000 BTU depending on the configuration, insulation, and exposure).
What matters to the customer is not just the “name” of the model: it is above all the sizing , the quality of installation , and the technical details that ensure stable and durable performance.
Prominent installation details (visible in the photo)
This installation features several good technical choices, immediately apparent:
1) Outdoor unit on wall brackets, clear of the ground
The Zephyr unit is mounted on wall brackets rather than placed on the floor. This is a major advantage in Quebec:
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better protection against snow, ice and standing water,
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reduction of the risk of premature corrosion,
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simpler maintenance (clearing, cleaning, inspection).
2) Smart positioning near the brick wall
Installing on a brick wall requires a rigorous method: solid anchoring, adherence to clearances, and vibration management. Here, the unit is positioned compactly , without obstructing access, while maintaining good air circulation.
3) Presence of a DiversiTech box
A DiversiTech box is visible on the wall — typically used as a protection/organization element (depending on the setup: electrical disconnection, component protection, or management accessory). This type of detail contributes to a cleaner , safer , and easier-to-maintain installation.
4) Visual cleanliness and “condo-friendly” integration
In Rosemont, the visual aspect is extremely important. Here, the unit is well aligned, the spacing is consistent, and the whole integrates naturally with the facade, without giving the impression of a rushed addition. That's exactly what we're aiming for: a durable, but also aesthetically pleasing, installation.
Our AirGreen approach: performance, silence, longevity
A wall-mounted heat pump reaches its full potential when installed with a comprehensive approach. For this type of project, we pay particular attention to:
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Vibration reduction (supports, fixings, contact points, stability),
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The routing of the connections (protection, sealing, clean finish),
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Respecting air clearances (avoiding areas that stifle the unit),
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The comfort strategy (orientation and placement of the inner head, balancing of the area).
The result: a quieter, more stable system that maintains its performance for longer.
Why a Zephyr wall-mounted heat pump is an excellent choice in Montreal
In a neighbourhood like Rosemont–La Petite-Patrie, temperature fluctuations are significant, and heating needs change rapidly. A modern wall-mounted heat pump allows you to:
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effective cooling when humidity rises,
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comfortable heating during the shoulder seasons,
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consumption is often better controlled thanks to intelligent modulation (variable speed technology depending on the configurations).
And above all: everyday comfort. We're not just talking about degrees Celsius, but about a more stable, less humid, and more pleasant home.
What the customer notices from the very first days
After this type of installation, the feedback is very often the same:
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“The room becomes comfortable much faster.”
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“The noise is really discreet.”
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“You can feel that the air is more stable, less 'aggressive'.”
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“It’s clean, it doesn’t spoil the exterior.”
That's exactly the goal: a result that is easy to live with and easy to maintain.
Conclusion: a compact, clean installation designed for our local climate
This installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie perfectly illustrates what we do at AirGreen: a residential solution that is efficient and adapted to the realities of Greater Montreal , both technically and aesthetically.
If you are in a condo, a plex, or a neighbourhood house with similar constraints (limited space, façade to respect, need for silence), a properly installed Zephyr wall-mounted heat pump can be a particularly relevant option.
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).