Installation of a Gree Extreme Mini Split Heat Pump in Kirkland, Montreal
See how AirGreen installed a Gree Extreme Mini Split in Kirkland. From -30°C heating to 24.5 SEER efficiency, this 18,000 BTU heat pump ensures comfort year-round. Learn more about its amazing features!
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 Perfect Fit for Montreal’s Climate: A Gree Extreme Mini Split Installation Story
In the heart of Kirkland, a suburb of Montreal, we recently completed a remarkable Gree Extreme Mini Split installation. This wasn’t just any installation—it was a story about precision, expertise, and the right choice of technology for a demanding climate. The Canadian winters can be harsh, but with the Gree Extreme model’s innovative features, homeowners can now stay warm even in temperatures as low as -30°C.
Our team at AirGreen takes pride in delivering the best in comfort, and this particular project was no different. Here’s the journey of how we transformed a home with the Gree Extreme, an 18,000 BTU wall-mounted heat pump, which offers both incredible efficiency and modern comfort.
Meeting Kirkland’s Climate Needs
Montreal is known for its extreme weather, where summers are humid and winters are freezing. For our client in Kirkland, we knew that installing a heat pump with a robust heating capacity was critical. That’s why we chose the Gree Extreme Mini Split—a system designed specifically to handle temperatures as cold as -30°C. The homeowner’s main concern was staying cozy during the winter months while also having efficient cooling for the summer.
The 18,000 BTU capacity was the perfect fit for their mid-sized home, offering ample cooling in the summer and powerful heating in the winter. And with Montreal’s fluctuating weather, the flexibility of this unit to switch between heating and cooling quickly is a major benefit.
Energy Efficiency at its Best
This Gree Extreme model is a true champion in energy efficiency, boasting a remarkable 24.5 SEER rating, making it one of the most efficient units available on the market today. Not only does it help the homeowner save on energy bills, but it also qualifies for the LogisVert Hydro-Québec grant, offering a rebate of $1,704. This made the decision easy for the homeowner, as they could both enhance their comfort and save money in the long run.
Why the Gree Extreme?
The Gree Extreme isn’t just a heat pump; it’s a symbol of innovation. With features like WiFi control, homeowners can adjust settings remotely using their smartphone, ensuring the perfect temperature is waiting for them when they return home. The Energy Star® certification guarantees top-notch energy performance, and its G10 Inverter Technology allows the system to operate efficiently even at low voltages, reducing wear on the compressor and extending the life of the machine.
Installing in Kirkland: The Process
Installation day in Kirkland was an exciting one. We mounted the interior unit in a high-traffic area where airflow would be most effective, ensuring the system would distribute air evenly throughout the home. With its compact dimensions of 43.34 x 9.81 x 12.88 inches, the indoor unit blended seamlessly into the home’s modern decor, offering comfort without compromising on aesthetics.
The exterior unit—measuring 38.56 x 16.81 x 31.11 inches—was installed on a sturdy platform near the backyard, designed to handle the harshest weather conditions. The outdoor unit is equipped with a base heater to prevent ice buildup during the winter, ensuring optimal performance year-round.
We also made sure the piping and wiring were installed with the utmost care, using 1/4 - 5/8 pipes to ensure that the refrigerant flow would be both efficient and reliable. The sound levels were a key consideration for the homeowner, and we were pleased to confirm that the exterior unit operates at a whisper-quiet 59.0 dB(A), while the interior unit remains equally unobtrusive at 34/51 dB(A).
Overcoming Installation Challenges
One of the challenges we encountered during this installation was the placement of the outdoor unit. The homeowner’s backyard space was limited, but thanks to the compact design of the Gree Extreme’s exterior unit, we were able to fit it snugly in a discreet corner. This not only preserved the aesthetic appeal of the backyard but also allowed the heat pump to function optimally without obstruction.
Another aspect we focused on was ensuring that the unit could handle the heavy snow loads common in Montreal winters. By elevating the outdoor unit on a sturdy platform, we ensured it would remain free of snow accumulation and continue to operate efficiently even during the most intense snowfalls.
Features That Stand Out
- Heating capacity down to -30°C: Perfect for cold Canadian winters.
- Energy Star® Certified: Enjoy energy savings while reducing your environmental impact.
- WiFi Control: Manage your comfort from anywhere with your smartphone.
- Quiet Operation: Both indoor and outdoor units run quietly, ensuring comfort without noise.
- Turbo Mode: Quickly reach your desired temperature with this powerful setting.
- Intelligent Defrosting: The heat pump automatically manages defrost cycles, improving efficiency and extending the lifespan of the unit.
Long-Term Benefits
The homeowner will enjoy peace of mind with the industry-leading 10-10-10 warranty—10 years on the compressor, parts, and labor. This extensive coverage ensures that the investment in a Gree Extreme Mini Split is well protected. The self-diagnosis feature also means any issues that arise can be quickly identified and resolved, reducing service time and cost.
Additionally, the Gree Extreme’s dehumidification feature is perfect for humid Montreal summers, ensuring the home remains cool and comfortable even when the outside air feels heavy.
Ready for Montreal’s Future Climate
With the unpredictability of Montreal’s climate, it’s essential to have a system that can adapt to both ends of the temperature spectrum. The Gree Extreme Mini Split is not only built for today’s harsh winters and humid summers but is also future-proofed with eco-responsible refrigerant (R-410A) and cutting-edge energy efficiency.
Why Choose AirGreen?
At AirGreen, we understand that a great installation is more than just fitting a unit—it’s about customizing the solution to the unique needs of each home. For this Kirkland installation, we provided an HVAC system that not only offers comfort but also significant savings on energy bills, and long-term reliability backed by a robust warranty.
If you’re in the Greater Montreal area, whether it’s Laval, Longueuil, or the North or South Shores, and looking for a reliable solution to your heating and cooling needs, we’re here to help.
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?
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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).