Installation of a Gree wall-mounted heat pump in Outremont
Professional installation of a Gree wall-mounted heat pump in Outremont by AirGreen, HVAC experts in Montreal, Laval, Longueuil, North Shore and South Shore.
Take a tour of the installation
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.
A residential project combining comfort and energy efficiency
At AirGreen , we assist our clients in Greater Montreal in choosing and installing modern HVAC solutions tailored to their needs. We recently installed a Gree wall-mounted heat pump in a residence in the Outremont neighborhood, an area known for its elegant homes and apartments with often high ceilings.
Our client wanted to improve their comfort while reducing their energy bill. After analyzing their needs, we recommended a Gree wall-mounted heat pump , a choice known for its reliability and energy efficiency, even in Montreal winters.
Customer needs analysis
The accommodation, located in a typical Outremont duplex, presented the following challenges:
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A main living room facing south, often subject to temperature variations.
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Upstairs bedrooms need better air conditioning distribution in summer.
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The desire to obtain an energy-efficient appliance eligible for provincial and federal subsidies (LogisVert programs, Canada Greener Homes Grant).
Choice of device: the Gree wall-mounted heat pump
The installed Gree wall-mounted heat pump is from a high-efficiency range. Its main features:
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Capacity : Suitable for the needs of an average-sized residential space (12,000 to 15,000 BTU depending on configuration).
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Energy efficiency : Energy Star certified, high SEER for summer and efficient HSPF in heating mode.
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Inverter technology : fine regulation of consumption and reduction of operating noise.
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Reliability in extreme cold : maintains stable performance down to -25°C, essential in Montreal's climate.
Installation Steps
Our team proceeded rigorously:
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Study of interior positioning :
The wall-mounted head was installed high above the living room windows, allowing optimal air circulation without disturbing the interior layout. -
Drilling and passage of conduits :
A discreet opening in the exterior wall connected the indoor unit to the outdoor condenser. The refrigerant and electrical pipes were carefully insulated and protected by white capping to match the facade. -
Condensate management :
The installation was carried out by gravity , thus avoiding the addition of a lifting pump, which reduces the risk of additional maintenance. -
Electrical connection :
The system was connected to the existing panel with a dedicated circuit breaker, ensuring safety and RBQ compliance. -
Testing and commissioning :
Once the pressurization and leak testing were complete, we proceeded with the start-up. The customer immediately noticed the quiet operation and the quality of the airflow .
Results obtained
The owner now benefits from:
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Constant comfort in summer and winter.
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A planned reduction in its annual energy consumption of almost 30% compared to its old electric supplementary heating.
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Access to subsidies significantly reducing your initial investment.
Care tips to ensure longevity
In order to guarantee the performance of the Gree heat pump, we provided the customer with specific recommendations:
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Clean filters every 4 to 6 weeks.
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Annual inspection by an AirGreen certified technician to maintain the warranty and prevent any anomalies.
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Checking that condensate is draining properly before winter.
Why choose AirGreen for your HVAC installation in Montreal?
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Local expertise : hundreds of successful installations in Montreal, Laval, Longueuil, on the South Shore and the North Shore.
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Grant support : we guide each client through the administrative procedures.
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RBQ certified work : strict compliance with safety and performance standards.
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Local after-sales service : rapid availability if needed.
Conclusion: sustainable and economical comfort in Outremont
This Gree wall-mounted heat pump installation in Outremont perfectly illustrates our mission: to provide our customers with modern, efficient, and aesthetically pleasing HVAC solutions. At AirGreen, we combine technical expertise, attention to detail, and personalized service to ensure lasting satisfaction.
The big day, step by step
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 would it look like 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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
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.
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).