Installation of a Gree Extreme Wall-Mounted Mini Split in Ahuntsic-Cartierville, Montreal
Transforming challenges into opportunities, AirGreen delivers a seamless HVAC installation in Ahuntsic-Cartierville. Dive in to see how we made a house feel more like home!

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 Integration into Your Living Space
At AirGreen, we pride ourselves on not just installing HVAC systems, but integrating them seamlessly into your homes. Our recent project in Ahuntsic-Cartierville, Montreal, stands as a testament to our commitment to excellence and our dedication to customer satisfaction.
The Challenge
Every home is unique, and so are its HVAC needs. For this particular installation, our challenge was to ensure that the entire floor received an even distribution of cooling and heating. The ideal spot for the machine was the center of the living room. However, the architectural constraints of the house meant that we couldn't run the pipes and wires through the walls or ceiling.
The Solution
Rather than seeing this as a setback, we viewed it as an opportunity to showcase our expertise. Collaborating with a professional plasterer, we meticulously planned the route for the pipes through one room, ensuring they were concealed perfectly. Once the pipes and wires were in place, the plasterer worked his magic, hiding them and repainting the area to match the rest of the interior. The result? A Gree Extreme Wall-Mounted Mini Split that looked like it had always been a part of the home.
Why the Gree Extreme Wall-Mounted Mini Split?
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Cooling and Heating Capacity: With a cooling capacity of 18,000 BTU and the ability to provide heating even at -30°C, this machine is built for performance.
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Energy Efficiency: Boasting an impressive 24.5 SEER efficiency rating and an Energy Star® certification, this model is both powerful and eco-friendly.
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Smart Features: With built-in WiFi, controlling your HVAC system has never been easier. Whether you're at home or on the go, optimal comfort is just a click away.
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Peace of Mind: The Gree Extreme comes with a 10-10-10 warranty on the compressor, parts, and labor. Additionally, an extended warranty is included, ensuring that your investment is protected for years to come.
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Quiet Operation: With sound pressure levels of 59.0 dB(A) for the exterior and 34/51 dB(A) for the interior, this machine operates whisper-quiet, ensuring no disturbances.
Grants and Savings
One of the standout features of the Gree Extreme is its eligibility for both federal and provincial grants. Customers can avail of a federal grant ranging from $2,500 to $5,000 and a provincial grant of $1,704. These grants, combined with the energy savings from the machine's high efficiency, make the Gree Extreme a cost-effective choice for homeowners.
A Turnkey Experience
Our customer in Ahuntsic-Cartierville was ecstatic with the outcome. Not only did they get a top-of-the-line HVAC system, but they also received a turnkey installation experience. From the initial planning to the final touches, we handled everything, ensuring that the customer had nothing to worry about.
Why Choose AirGreen?
Our recent installation in Ahuntsic-Cartierville is just one example of our dedication to excellence. Whether it's a simple installation or a complex project, we approach every job with the same level of commitment and professionalism. Our goal is to ensure that every customer is 100% satisfied with our services.
In Conclusion
At AirGreen, we don't just install HVAC systems; we integrate them into your homes, ensuring that they complement your interiors and provide optimal comfort. If you're looking for an HVAC company that goes the extra mile, look no further than AirGreen.
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.
Which type of equipment for your project?
Pick what looks like your need.
Four mistakes we do not make
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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).
