Installation of a Zephyr wall-mounted heat pump in Ville-Marie
AirGreen installed a Zephyr wall-mounted heat pump in Ville-Marie, combining performance, silence and modern design for lasting comfort in all seasons.
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The job on one screen
The article, chapter by chapter
A custom installation in a downtown building
Located in the heart of Montreal's Ville-Marie district , a young couple who own a renovated condo contacted us for a project to install a Zephyr wall-mounted heat pump . The goal: to replace an old, noisy, and energy-consuming portable air conditioner with a modern, quiet, and energy-efficient HVAC system capable of ensuring comfort all year round.
In a typical Montreal building with brick walls and limited outdoor space, the main challenge was to integrate the new outdoor unit without altering the building's aesthetics or hindering neighborly access.
Preliminary analysis and preparation of the site
Before any installation, our AirGreen team carried out a complete thermal assessment of the home . This crucial step helps determine the required power and ensures accurate sizing of the system.
The data obtained confirmed that a 12,000 BTU Zephyr model perfectly met the needs of this 900 sq. ft. condo.
Preparation steps:
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Checking the electrical capacity of the existing panel;
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Planning the passage of the refrigeration pipe through the brick wall;
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Selection of a raised wall bracket made of galvanized aluminum to avoid vibrations and facilitate drainage;
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Coordination with the condominium association to ensure compliance with aesthetic and sound standards .
Installing the Zephyr outdoor unit
The sleek and compact outdoor unit was installed on an AirGreen metal base securely attached to the building's rear façade. Our technicians ensured optimal clearance for airflow and sufficient spacing between the brick and the fan to avoid resonance.
All electrical wiring was housed in a CSA-compliant waterproof conduit , ensuring a secure and discreet installation. We also installed a wall-mounted safety circuit breaker (disconnect box) in close proximity to the unit, compliant with the Canadian Electrical Code.
Interior installation and performance testing
Inside, the Zephyr wall-mounted unit was positioned above the main living area, ensuring even air distribution. The wall opening was carefully insulated to prevent air or moisture infiltration.
Once the power was turned on, our technician carried out a series of tests:
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Vacuum leak test for 45 minutes at -30 psi;
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Checking R-410A refrigerant pressure ;
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Simultaneous heating/air conditioning operation test ;
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Airflow and sound level measurement (results: 21 dB in low mode, almost inaudible).
A result that lives up to expectations
Within minutes of startup, the client noticed the system's consistent, quiet coolness . The sleek design of the Zephyr indoor unit blended seamlessly with the condo's modern decor, while the recessed outdoor unit remained discreet.
The couple was also impressed by the built-in Wi-Fi connectivity , allowing them to control the temperature remotely via a mobile app – a particularly welcome feature for an urban lifestyle.
The advantages of the Zephyr heat pump installed by AirGreen
The Zephyr models distributed and installed by AirGreen are distinguished by:
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exceptional energy efficiency (up to 21 SEER) ;
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stable operation down to -25°C in heating mode;
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quiet and energy-efficient inverter technology ;
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a full 10-year warranty on the compressor and parts (when installed by an authorized AirGreen dealer).
Maintenance and durability tips
Our technicians explained good maintenance practices to the customer:
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regular cleaning of the interior air filter (once a month);
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clearing the outdoor unit in winter to avoid snow accumulation;
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Annual check by an AirGreen technician to ensure maximum compressor and coil efficiency.
AirGreen: HVAC expertise in Montreal and beyond
At AirGreen , every installation is designed as a custom project. We tailor every step—from model selection to final configuration—to suit the space, building style, and desired comfort.
Our team serves all of Greater Montreal, Laval, Longueuil, the North Shore and the South Shore , with a firm commitment: to provide reliable, aesthetic and durable HVAC solutions .
Thanks to this successful installation in Ville-Marie, this condo now enjoys optimal comfort 12 months a year, with a minimal noise and energy footprint. A beautiful achievement by AirGreen and further proof that Zephyr quality goes hand in hand with performance and tranquility.
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).