Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie
Discreet installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie: short path, gravity drain, four-season comfort and optimized performance. AirGreen, HVAC installation experts in Montreal, Laval, Longueuil, North Shore, South Shore.
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The job on one screen
The article, chapter by chapter
Four-season comfort, discreet installation and performance designed for Montreal plexes
Background and objectives
At AirGreen , we are working today in a typical Rosemont–La Petite-Patrie apartment. The client is looking for a reliable, quiet, and economical heating and cooling solution for their main living area, with a compact and clean installation . We offer a Zephyr wall-mounted heat pump , ideal for Montreal homes where space and aesthetics matter as much as performance.
Equipment Choice: Why Zephyr for this Project
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Reliable and quiet : the Zephyr indoor head features a sleek front and discreet display, making it ideal for living rooms.
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Energy efficiency : the recent Zephyr wall-mounted ranges offer high heating and air conditioning efficiency, a major asset for reducing operating costs in Montreal .
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Uniform comfort : wide motorized shutter for regular airflow, limiting cold areas.
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Simplified maintenance : easily accessible filters for quick HVAC maintenance by our teams or by the owner.
Salient installation details
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Location : Installed in the upper part of a load-bearing wall facing outwards. This configuration allows for a short cooling path and limits pressure losses.
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Wall Pass-Through : Single 2–3 inch drilling, direct rear exit; minimal interior capping and white finish to blend into the wall.
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Condensate drainage : gravity drain with continuous slope towards the outside, avoiding the use of a pump and reducing maintenance.
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Power supply : dedicated circuit protected at the panel, in accordance with the Quebec Construction Code; interconnection and communication cable passed with the refrigerant lines for a clean finish.
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Anti-vibration and acoustics : interposition of anti-vibration pads and verification of tightening in order to maintain a very low noise level in the room.
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Commissioning : deep vacuum, leak test, service opening, parameter check (blowing temperature, intensity, superheat/subcooling) and calibration of the flaps to direct air away from the seating areas.
Sizing and usage advice
Proper sizing is crucial for comfort and economy. In Rosemont's plexes, open-plan living spaces often require moderate power, but this is supported by high efficiency at low temperatures. We check:
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internal volumes and contributions (kitchen, solar exposure),
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real insulation (brick walls, windows),
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air circulation between rooms.
Tips : Keep the heat pump in heating mode continuously during cold weather, avoid frequent changes to the setting, and clean the filters every 6 to 8 weeks.
Result: immediate comfort and neat aesthetics
The client benefits from a wall-mounted air conditioner/heat pump with very discreet integration: white front, soft central display , no visible cables. The airflow covers the living area without direct draft, with a significant drop in humidity in summer and rapid heating in the off-season.
Grants and Compliance
Depending on the version chosen and its seasonal performance , the Zephyr wall-mounted heat pump may be eligible for provincial grant programs when the efficiency and cold weather performance criteria are met. We validate eligibility on a case-by-case basis, prepare the documents and accompany the customer until the deposit.
AirGreen Preventive Maintenance
To maintain performance:
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cleaning of exchangers and fans,
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drain and slope check,
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checking electrical connections and tightening torque,
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inspection of the refrigeration cycle and updating of parameters.
We recommend an annual visit before the cold season. Proper maintenance extends the lifespan and maintains yields .
Best practices for installation in Greater Montreal
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The shortest possible route to the outside to reduce losses and accelerate the evacuation of condensates.
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Waterproof penetration with vapor barrier and clean finish, essential in brick walls of plexes.
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Noise management : position the head to avoid direct blowing on the seating areas and limit resonances.
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Exterior winter protection (at the condenser): compliant clearances, snow and ice management, retention tank if necessary.
Why entrust your HVAC installation to AirGreen?
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Local expertise in Montreal, Laval, Longueuil, North Shore and South Shore .
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Certified team for HVAC installation, commissioning and maintenance .
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Complete support : selection of equipment, verification of eligibility for subsidies , usage advice and after-sales follow-up.
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Impeccable finish : integrated wiring, discreet capping , airflow calibration and documentation provided to the customer.
Do you have a similar project in Rosemont–La Petite-Patrie or elsewhere in Greater Montreal?
We size, install, and maintain your Zephyr wall-mounted heat pump with a customized approach designed for the area's plexes and condos. Contact us: our technical team will respond quickly, from quote to commissioning, with results that meet your expectations.
Keywords : heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore , Zephyr .
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).