Installation of a Zephyr wall-mounted heat pump in a condo in Ville-Marie
Professional installation of a Zephyr wall-mounted heat pump in Ville-Marie. AirGreen optimizes tight spaces for lasting HVAC comfort in Greater 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 high-performance HVAC solution adapted to glass balconies in the city center
In the heart of Montreal, our AirGreen teams have just installed a Zephyr wall-mounted heat pump in a condo in the Ville-Marie district. This unique configuration—a compressor installed on brackets in a glass balcony—perfectly illustrates our expertise when it comes to optimizing tight spaces while respecting the technical and architectural constraints of a condominium building.
Project background
The client, the owner of a condo located in a residential tower, was looking for a heating and cooling solution that was economical, quiet, and eligible for Quebec subsidies . The presence of a semi-enclosed balcony posed a challenge, as it was necessary to ensure adequate ventilation and provide solid support without encroaching on the outdoor living space.
After analysis, we recommended a Zephyr wall-mounted heat pump , a model appreciated for its compactness, energy efficiency and reliable operating capacity down to -25°C.
Installation Steps
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Preparing the balcony :
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Fixing sturdy metal brackets to the concrete wall of the balcony.
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Checking for solidity and flatness to ensure compressor stability.
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Installing the Zephyr compressor :
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High installation to free up floor space.
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Passage of refrigeration connections and electrical cable in a clean and discreet conduit.
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Connections and commissioning :
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Gravity connection of the condensate drain, facilitated by the layout of the balcony.
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Complete pressure testing, vacuuming and refrigerant charge confirmed.
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Acoustic check to ensure that the compressor operates silently, an essential criterion in co-ownership.
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Customer Benefits
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Four-season comfort : efficient heating in winter, efficient air conditioning in summer.
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Energy savings : high coefficient of performance and compatibility with financial assistance programs.
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Space saving : wall mounting that frees up the balcony floor.
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Discretion and aesthetics : cabling and conduits carefully integrated so as not to distort the space.
Constraints and solutions provided
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Glass balcony : We checked that the unit has sufficient air circulation, adjusting its positioning to avoid any backflow of hot air.
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Concrete structure : specific drilling with chemical anchors to guarantee lasting fixing.
Why choose AirGreen for your HVAC installation in Montreal
At AirGreen, we understand the realities of downtown condominiums . Our teams know how to navigate tight spaces, union regulations, and the structural challenges of glass balconies. We offer customized, certified, and secure solutions, always focused on performance and sustainability.
Recommended maintenance
We recommend annual HVAC maintenance, including filter cleaning, condensate drain inspection, and energy efficiency testing. This not only extends the life of the equipment, but also maintains energy efficiency over the years.
AirGreen , specialist in the installation of Zephyr wall-mounted heat pumps in Montreal, Laval, Longueuil, on the North Shore and the South Shore, remains your trusted partner for residential and co-ownership projects.
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).