Installation of a Gree wall-mounted heat pump in Verdun
AirGreen installed a Gree 12,000 BTU wall-mounted heat pump in Verdun, an energy-efficient and discreet HVAC solution suitable for condos and houses 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 careful adaptation for a limited outdoor space
At AirGreen , we know that a wall-mounted heat pump installation project is never a simple mechanical operation: it is about integrating cutting-edge technology into a real living environment, with all its physical and aesthetic constraints. This is exactly what we achieved for a client located in Verdun , on one of those typical wooden balconies where every square centimeter counts.
The Gree outdoor unit was installed on a solid concrete base resting on support blocks to ensure stability and durability. With limited space, our team carefully selected the location, taking into account ventilation, noise, and traffic flow around the balcony.
The technical challenges of this installation
Reduced space management
The balcony presented several constraints: garden furniture, storage units and a metal structure already occupied the space. To avoid clutter and preserve circulation, we positioned the condenser near the rear wall , thus optimizing accessibility while respecting the clearances necessary for the proper functioning of the machine.
Power supply nearby
The advantage of this project was the presence of an electrical box installed directly on the adjacent wall. Our technicians were able to connect the heat pump to it in a compliant manner, minimizing wiring lengths and reducing intervention time.
Condensates and drainage
On a balcony, managing condensation water is often a challenge. Here, the configuration allowed for gravity drainage , thus avoiding the addition of a lifting pump which would have generated additional noise and future maintenance costs.
Why choose a Gree heat pump?
Energy performance
The Gree range is renowned for its efficiency in cold climates. The model chosen by our client offers a capacity of 12,000 BTUs , perfectly suited to a medium-sized condo in Verdun. Energy Star certified, it allows you to benefit from subsidies in effect in Quebec, particularly within the framework of energy efficiency programs applicable in Montreal, Laval, Longueuil, the South Shore and the North Shore .
Four-season comfort
This wall-mounted heat pump provides optimal comfort in both summer and winter. It is designed to maintain stable performance down to -25°C , which is crucial for Greater Montreal's harsh winters.
Reliability and durability
The client was looking for a low-maintenance solution. Thanks to Gree's inverter technology, mechanical wear is reduced, and energy consumption is precisely adjusted to meet needs.
The AirGreen approach to this project
Careful preparation
Before any intervention, our team carried out a complete analysis of the premises : taking measurements of the balcony, checking clearances, studying the refrigeration path and assessing electrical constraints. This step is crucial for anticipating unforeseen events.
A clean and secure installation
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Fixing the outdoor unit to a concrete slab with anti-vibration wedges.
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Refrigeration connections insulated and carefully capped to protect against the elements.
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Checking refrigerant pressures and levels.
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Commissioning and full performance testing before handover to the customer.
Respect for aesthetics
As the balcony is also a relaxation area, we took care to minimize the visual impact of the installation: well-aligned conduits, discreet capping, no unnecessary visible cables.
Result: guaranteed comfort, a satisfied customer
At the end of the project, the client could immediately see the difference: fresher and more stable indoor air, a quiet machine outside, and a harmonious integration that did not compromise the use of his balcony.
This Gree wall-mounted heat pump installation in Verdun perfectly illustrates AirGreen's philosophy: to provide adapted, efficient and sustainable HVAC solutions, while taking into account the realities of each house, condo or plex in Greater Montreal.
The advantages of a project carried out with AirGreen
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Local expertise in Montreal, Laval, Longueuil, South Shore and North Shore .
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Access to provincial and federal grant programs.
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Full warranty on device and labor.
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Responsive after-sales service, with the possibility of an annual maintenance plan.
Conclusion
This project in Verdun demonstrates that even in a confined space , it is possible to benefit from a high-performance, well-integrated HVAC system . By combining a reliable device like the Gree wall-mounted heat pump with AirGreen's expertise, four-season comfort becomes accessible, economical, and aesthetically pleasing.
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?
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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).