Installation of a Gree Extreme 12,000 BTU Wall-Mounted Heat Pump in Town Mount-Royal
Discover how AirGreen installed a Gree Extreme 12,000 BTU heat pump in Town Mount-Royal. Designed for extreme Canadian winters, this system offers superior comfort, efficiency, and quiet performance.
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.
Bringing Comfort to Canadian Winters: A Gree Extreme Installation Story
When we think of Ville Mont-Royal, or Town Mount-Royal, it’s hard not to picture the distinct seasons, especially the biting cold winters that define much of the year. In a town where temperatures frequently drop below freezing, having a reliable heating and cooling system is more than just a luxury; it's a necessity. That's where AirGreen comes in. We recently completed the installation of a Gree Extreme 12,000 BTU wall-mounted heat pump for a client in this vibrant area, providing them with comfort that doesn’t quit—even when temperatures dip to -30°C.
But this was more than just another installation. It was an opportunity for us to showcase our expertise, attention to detail, and commitment to making sure our customers receive nothing but the best HVAC solutions. Let's dive into the specifics of this job and explore why the Gree Extreme is the perfect choice for homes in regions like Town Mount-Royal.
The Gree Extreme: A Machine Built for Canadian Winters
There’s a reason the Gree Extreme 12,000 BTU wall-mounted heat pump is becoming a household name in Montreal and its surrounding areas. This Energy Star® certified unit is designed specifically to perform in extreme climates, which makes it an ideal fit for homes in Ville Mont-Royal, where winters can be harsh and unforgiving.
Key Features:
- Heating Capacity Down to -30°C: The Gree Extreme doesn’t shy away from cold weather. Even when temperatures plunge, this unit provides reliable heating to keep your home comfortable.
- Cooling Capacity of 12,000 BTU: When summer rolls around, the Gree Extreme switches gears to keep the heat at bay, making it a true year-round solution.
- Energy Efficiency: With a 30.5 SEER rating, this model is designed to keep energy costs low while providing top-tier performance.
- Wi-Fi Connectivity: Control your home’s temperature from anywhere with the GREE+ app, ensuring comfort is always just a tap away.
Installation Details: Precision and Expertise in Every Step
Our team arrived at the client’s home in Ville Mont-Royal prepared to tackle the job with precision. The property’s architecture presented some unique challenges—like any older home in the area—but our team is always up for a challenge. Ensuring the installation was seamless both technically and aesthetically was our top priority.
The Exterior Unit
Mounted securely on the home’s brick exterior, the Gree Extreme’s outdoor compressor was installed with a focus on durability and efficiency. One of the standout features of the Gree Extreme series is its special heating base, which prevents condensate from freezing in the unit, ensuring consistent operation even in freezing temperatures.
The Interior Unit
Inside the home, the wall-mounted unit was placed to maximize airflow throughout the living space. With dimensions of 38.19 x 8.86 x 11.81, the interior unit is sleek and compact, blending seamlessly into the home’s décor. Its horizontal and vertical louvers offer wide-spread air distribution, ensuring every corner of the room stays comfortable, whether in heating or cooling mode.
Why the Gree Extreme Was the Right Choice for This Installation
Our client chose the Gree Extreme 12,000 BTU model for several key reasons, and it’s easy to see why. The harsh winters of Montreal require a system that can withstand the cold, and the Gree Extreme delivers. But it’s not just the cold weather performance that makes this unit shine—it’s the thoughtful design, efficiency, and adaptability.
Energy Efficiency at Its Best
One of the standout features of the Gree Extreme is its remarkable energy efficiency. With a SEER rating of 30.5, this unit is one of the most efficient options on the market. It’s no wonder the Hydro-Québec LogisVert program offers a $972 grant to homeowners who choose this model. Not only does this grant help reduce upfront costs, but the long-term savings on energy bills make the Gree Extreme a smart investment for any homeowner.
Intelligent Defrosting System
Montreal winters are known for their brutal cold, but they’re also known for fluctuating temperatures that can cause freezing and thawing cycles. The Gree Extreme’s intelligent defrosting system ensures that the unit only defrosts when necessary, preventing energy waste while keeping the home warm. This feature is crucial for maintaining efficiency during the unpredictable weather patterns typical of Town Mount-Royal.
A Quiet, Efficient Performer
Living in Ville Mont-Royal means enjoying the quiet charm of suburban life, and no one wants a loud HVAC system disrupting that peace. Thankfully, the Gree Extreme boasts a sound pressure level of just 53.0 dB(A) for the outdoor unit and 22/49 dB(A) for the indoor unit, making it one of the quietest units available. Whether it’s a winter night or a summer afternoon, our client won’t even notice the unit is running—it’s that quiet.
A Client-Centric Approach
At AirGreen, we know that every installation is unique, and we pride ourselves on offering personalized solutions tailored to each client’s needs. For this project in Town Mount-Royal, we took extra care to ensure that the Gree Extreme was the perfect fit—not just for the home, but for the client’s lifestyle.
We walked the client through the features of the unit, demonstrating how to use the Wi-Fi control and the i-Feel temperature sensor for optimal comfort. We also explained the benefits of the 10-year warranty that covers the compressor, parts, and labor, providing peace of mind for years to come.
Grants and Savings: Maximizing Value for Our Client
This installation was made even more rewarding for our client thanks to the available government grants. The Hydro-Québec LogisVert grant of $972 and the federal government’s $2,500 to $5,000 grant made this energy-efficient upgrade an affordable option, allowing the homeowner to invest in a high-quality system without breaking the bank. At AirGreen, we always strive to help our clients take advantage of these savings opportunities to make their homes more comfortable and energy-efficient.
Why Choose AirGreen for Your HVAC Needs?
Our client in Town Mount-Royal is now set for the year ahead, with a system that will keep them cool in the summer and warm in the winter. But beyond the technical details of the installation, what truly sets AirGreen apart is our commitment to customer satisfaction. We handle every project with care, ensuring that each installation is done to the highest standards.
When you choose AirGreen, you’re choosing:
- Expertise: With years of experience in the industry, we know HVAC systems inside and out.
- Reliability: We stand by our work, offering industry-leading warranties and after-sales service.
- Personalized Service: Every home is different, and we tailor our installations to meet your specific needs.
Whether you’re in Montreal, Laval, Longueuil, the North Shore, or the South Shore, we’re here to provide the best HVAC solutions for your home.
Ready to Make the Switch?
If you’re looking for a reliable, energy-efficient heating and cooling solution, look no further than the Gree Extreme 12,000 BTU wall-mounted heat pump. And if you want an HVAC company that values your comfort as much as you do, AirGreen is the team to call.
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).