Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie
Installation of a Zephyr wall-mounted heat pump in Rosemont–La Petite-Patrie: four-season comfort, discreet design, and energy efficiency. Carried out by AirGreen, HVAC expert in Montreal.
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.
A discreet and efficient installation by AirGreen
At AirGreen , we recently installed a Zephyr wall-mounted heat pump in a charming duplex in Montreal's Rosemont–La Petite-Patrie neighborhood. This project perfectly illustrates our approach, which combines aesthetics, performance, and energy efficiency , adapted to Montreal's typical urban spaces where every inch counts.
Optimal comfort, even in tight spaces
In this bright, ground-floor apartment, the client's main objective was clear: to achieve four-season comfort while minimizing visual and noise clutter. The Zephyr wall-mounted heat pump , renowned for its compactness and reliable performance down to -25°C , was the ideal choice.
The indoor unit was installed above the back door , an ingenious configuration that allows for even air distribution without obstructing openings or encroaching on the living space. The orientation of the shutters ensures smooth circulation of hot or cold air throughout the room, guaranteeing constant comfort in all seasons.
Technical details and installation precision
Our technicians have taken care to carry out each step according to the highest standards in the HVAC (heating, ventilation and air conditioning) sector :
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Installed Model : Zephyr Wall Series R-32 (12,000 BTU)
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Location : Above a patio door leading to the backyard
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Condensate drainage : gravity-fed, carefully concealed for an aesthetic appearance
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Refrigerant path : discreet pipe running along the side wall, protected by white capping matching the paint
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Power supply : direct connection to the main panel with dedicated circuit breaker
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Installation time : approximately 3 hours, including vacuuming and performance testing
Every detail counts: the positioning of the wall-mounted head maximizes airflow while minimizing energy loss due to exterior openings. All wiring and conduits were neatly integrated, demonstrating the importance we place on fine workmanship and the durability of our installations.
Why choose a Zephyr wall-mounted heat pump?
Zephyr heat pumps offer excellent value for homeowners looking for a reliable and energy-efficient solution. Their inverter technology adjusts compressor power based on actual needs, reducing electricity consumption and improving the longevity of the unit.
Zephyr R-32 Series Highlights:
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Stable operation down to -25°C , ideal for Quebec winters
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R-32 refrigerant gas , more environmentally friendly and more efficient than R-410A
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Very low noise level , perfect for urban apartments and duplexes
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Integrated dehumidification and air filtration mode
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Smart remote control with timer and weekly programming
This model is also eligible for certain Quebec subsidies , depending on the program in effect at the time of installation, in particular thanks to its high seasonal efficiency ( SEER greater than 20 and HSPF greater than 10 ).
Adapted to Montreal reality
Installing a wall-mounted heat pump in a typical Rosemont building involves overcoming certain challenges: restricted spaces, thick load-bearing walls, and sometimes limited exterior access. Thanks to our local experience and our RBQ and Énergir certified teams , we know how to anticipate these constraints to deliver clean, durable, and efficient installations.
In this particular project, the main challenge was to integrate the indoor unit without compromising the natural light provided by the large glass door. Our installers carefully measured the required clearance height and adjusted the positioning to the nearest millimeter, ensuring seamless integration while respecting the manufacturer's clearance standards.
Result: efficient air conditioning and heating all year round
Once commissioned, the Zephyr heat pump quickly demonstrated its effectiveness. The customer immediately noticed impressive temperature stability and an almost imperceptible noise level , even in turbo mode.
The first few weeks of use confirmed a significant reduction in electricity consumption compared to the old auxiliary heating system. This type of installation perfectly illustrates the AirGreen philosophy : offering sustainable HVAC solutions , designed to provide maximum comfort while respecting the environment.
AirGreen: Your HVAC Expert in Greater Montreal
For over ten years, AirGreen has been assisting individuals and businesses in Greater Montreal, Laval, Longueuil, the North Shore, and the South Shore with the selection, installation, and maintenance of their HVAC systems. Each project is unique: we tailor our recommendations to the site's configuration, energy needs, and our clients' budget.
Whether you live in a condo, a duplex or a single-family home, our team will guide you towards the most efficient and cost-effective long-term solution.
Thinking about installing a Zephyr wall-mounted heat pump or upgrading your HVAC system?
Contact AirGreen today for a free assessment and discover why so many Montrealers trust us with their home comfort.
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.
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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?
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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).