Installation of a Gree Crossover Wall-Mounted Heat Pump in Park Extension, Montreal
Step into the world of superior comfort with our recent Gree Crossover Wall-Mounted Heat Pump installation in Montreal. Experience the blend of smart features, energy efficiency, and seamless service that left our client delighted.

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 Seamless Transition to Superior Comfort
At AirGreen, we pride ourselves on delivering top-notch HVAC services across Montreal, Laval, Longueuil, North Shore, and South Shore. Our recent installation in Park Extension, Montreal, is a testament to our commitment to quality and customer satisfaction.
The Perfect Match: Gree Crossover Wall-Mounted Heat Pump
The client's requirement was simple yet specific - a heating solution that could withstand the harsh -30°C Montreal winters, without breaking the bank. Our recommendation? The Gree Crossover Wall-Mounted Heat Pump.
This model is a powerhouse of features, boasting an impressive 25.0 SEER efficiency. With its 12,000 BTU capacity, it's perfectly sized for the client's home. The Gree Crossover is Energy Star® certified, ensuring optimal energy utilization.
Smart Features for Smart Living
The Gree Crossover is more than just a heat pump. It's a smart device designed for the modern home. With WiFi control included, the client can manage the unit's settings from anywhere. The unit also has a low sound pressure level, ensuring a quiet and peaceful environment.
A Warranty Worth Its Weight in Gold
One of the standout features of the Gree Crossover is its comprehensive 10-10-10 warranty. This covers the compressor, parts, and labor for a decade, offering peace of mind to the client.
The Installation Process: A Walk in the Park
The installation was a straightforward replacement job. The existing pipes were a perfect match, which made the process smoother. Our team meticulously checked the pipes for holes and gave them a deep cleaning. The client was delighted with our service and the extended warranty.
A Step Towards a Greener Future
The Gree Crossover uses eco-friendly R-410A refrigerant. This not only reduces the unit's environmental impact but also enhances its performance.
A Grant That Gives Back
The client was eligible for a provincial grant of $385, making the Gree Crossover an even more cost-effective solution.
Conclusion: A Job Well Done
At AirGreen, we believe in delivering quality and exceeding expectations. The installation of the Gree Crossover Wall-Mounted Heat Pump in Park Extension, Montreal, was a shining example of this commitment. We left behind a satisfied client, a warm home, and a promise of reliable service for years to come.
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?
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).
