Installation of a Gree wall-mounted heat pump in Rosemont–La Petite-Patrie
Installation of a Gree wall-mounted heat pump in Rosemont–La Petite-Patrie. AirGreen ensures comfort, reliability, and energy savings for this Greater Montreal condo.
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.
Tailor-made comfort for a Montreal condo
In the Rosemont–La Petite-Patrie neighborhood, a client wanted to improve their indoor comfort while reducing their energy bills. At AirGreen , we installed a Gree wall-mounted heat pump , a smart choice for an urban environment where efficiency, discretion, and durability are essential.
The Gree brand: performance and reliability
Gree is one of the world's largest manufacturers of heating and air conditioning systems. Renowned for its reliability and advanced technology, this brand offers wall-mounted heat pumps adapted to the Quebec climate, capable of operating efficiently even during periods of intense cold. For this project, the client opted for a single-zone unit, perfectly sized for the surface area of their condo.
Context and challenges of the installation
Installing a heat pump in a condo in an urban environment involves specific features that require specific technical expertise:
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Indoor positioning : the wall unit was fixed high up, above a storage unit, to maximize air circulation in the room.
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Refrigeration connection route : the wiring and pipes were routed discreetly to preserve the interior aesthetics and comply with safety standards.
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Drainage management : gravity drainage was preferred, simplifying maintenance and reducing the risk of breakdown.
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Compatibility with limited space : the compact device fits harmoniously without encroaching on the functionality of the room.
Key steps in the implementation
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Energy needs assessment : calculation of the required capacity based on the surface area and orientation of the home.
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Choosing the optimal location : ensuring even distribution of air throughout the main room.
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Drilling and installation of pipes : carried out with care to minimize the aesthetic impact.
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Installation of the outdoor unit : on a raised support, ensuring protection against snow and stability.
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Commissioning and checks : pressure tests, temperature control and validation of energy efficiency.
Immediate benefits for the customer
Thanks to this installation, the owner now benefits from:
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Four-season comfort , with heating in winter and air conditioning in summer.
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A significant reduction in its electricity consumption .
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A silent system, suitable for co-ownership living.
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Durable equipment covered by an extended manufacturer's warranty.
Grants and financial aid available
Gree wall-mounted heat pumps, when they meet energy performance criteria, may be eligible for government subsidies (LogisVert, provincial or federal subsidies). At AirGreen, we support our clients in preparing their applications to maximize their savings.
AirGreen expertise in Montreal and throughout Greater Montreal
Our team regularly operates in Montreal, Laval, Longueuil, as well as on the North Shore and South Shore , to offer HVAC solutions adapted to each type of home. Each installation is carried out with the same rigor: needs analysis, personalized advice, impeccable execution and after-sales follow-up. With AirGreen, our customers know they are investing in lasting comfort.
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).