Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie
AirGreen installed a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie, Montreal. A balcony installation combining performance, discretion, and four-season comfort, compliant with the most demanding HVAC standards.
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A discreet and efficient installation on a typical Montreal balcony
At AirGreen , we know how precious outdoor space is in Montreal plexes. That's why every wall-mounted heat pump installation must be designed to combine energy performance , visual discretion , and respect for urban architecture . Recently, we installed a Zephyr wall-mounted heat pump on a rear balcony of a building in Rosemont–La Petite-Patrie , an area known for its brick facades and narrow balconies overlooking leafy alleyways.
A typically Montreal context
The outdoor unit was carefully placed on a raised aluminum support , allowing good air circulation and avoiding any accumulation of water or snow in winter. The limited space of the balcony required precise planning: our team positioned the heat pump in such a way as to optimize the routing of the wiring while respecting the safety and aesthetics of the place.
The Zephyr model, chosen by our client, stands out for its reliability , remarkable energy efficiency and quiet operation , ideal for high-density urban environments.
Technical details of the installation
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Equipment type: single-zone wall-mounted heat pump
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Brand: Zephyr
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Location: Rosemont–La Petite-Patrie, Montreal
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Support: Raised galvanized metal frame
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Condensate drainage: gravity, adapted to the slope of the balcony
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Electrical connection: discreet, via external junction box compliant with CSA standards
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Refrigeration wiring: protected by white capping matching the facade woodwork
This configuration provides easy access for HVAC maintenance , while limiting the clutter on the balcony. Our technicians also checked the refrigeration circuit for leaks and pressure before commissioning, ensuring optimal operation from the first hours of use.
Four-season comfort
The Zephyr heat pump installed in this Rosemont home provides efficient heating down to -25°C , in addition to rapid and constant cooling during hot July days. Its variable-speed compressor (inverter) allows the power to be adjusted according to demand, providing constant comfort while reducing electricity consumption .
Thanks to this technology, occupants enjoy four-season comfort , with a stable interior temperature and reduced energy costs.
A great choice for Montreal
Zephyr wall-mounted heat pumps are eligible for grant programs offered by Hydro-Québec and Transition Énergétique Québec . By replacing an old electric or oil-fired heating system, the homeowner not only benefits from improved performance, but also from an accelerated return on investment.
AirGreen expertise serving urban residential
Installing a heat pump in a dense environment like Rosemont–La Petite-Patrie requires specific expertise. Our technicians are trained to adapt each HVAC installation to the realities of Montreal's built environment: metal balconies, old brick walls, restricted access, and close neighborhoods.
Each project is preceded by a complete analysis of the site , including the structural safety of the support , the length of the refrigerant connections , and the noise discretion of the device. It is this rigor that makes AirGreen a reference in HVAC installation in Montreal .
A clean, durable and aesthetic result
This installation perfectly illustrates our approach: clean work, integrated into the environment, and ready to offer lasting comfort to our clients. By combining aesthetics , performance and professional service , we ensure that each heat pump installed by AirGreen contributes to improving the quality of life while reducing the energy footprint of Montreal homes.
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).