Installation of a Gree Extreme Mini Split Heat Pump in LaSalle, Montreal
Discover how our expert installation of the Gree Extreme 18,000 BTU mini split heat pump in LaSalle provides ultimate comfort, efficiency, and reliability for Montreal’s extreme weather conditions!
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Efficient Comfort for Harsh Canadian Winters: A New Gree Extreme Installation
At AirGreen, we are passionate about providing top-tier HVAC solutions to keep homes across Montreal, Laval, Longueuil, and the surrounding areas comfortable year-round. Recently, we had the pleasure of completing a seamless installation of a Gree Extreme 18,000 BTU mini split heat pump in LaSalle, a neighborhood in Montreal. This installation is an excellent example of how modern HVAC technology can enhance home comfort in our extreme Canadian climate.
Why the Gree Extreme is Perfect for Montreal Winters
Montreal winters are no joke. With temperatures often plummeting to -30°C, it's critical that your heating system not only withstands but thrives in these conditions. The Gree Extreme Ultra Heat model we installed is built to perform in temperatures as low as -30°C, ensuring that our client will enjoy cozy, efficient warmth even during the coldest months.
This mini split heat pump is more than just a reliable heating solution—it's also a highly efficient cooling system. With a cooling capacity of 18,000 BTU, it offers powerful cooling performance in the summer, creating the perfect year-round climate control system for homes in Montreal.
Installation Specifics: Tailored for Efficiency and Performance
Our installation in LaSalle included both the interior and exterior units, each chosen for their compact design and performance capabilities. The interior unit, with dimensions of 43.34 x 9.81 x 12.88 inches, was installed seamlessly into the client's living space, ensuring it blended well with the room’s decor. We take pride in our attention to detail, ensuring the mini split system not only works flawlessly but also complements the aesthetics of the home.
Exterior Unit Placement
For the exterior unit, we placed it in a location that allowed optimal airflow and performance, with dimensions of 38.56 x 16.81 x 31.11 inches. This placement ensures that the heat pump can work efficiently year-round while being protected from debris and harsh weather conditions. Gree’s built-in heating element ensures that no ice buildup will affect the system during winter, which is especially important in Montreal’s cold and snowy climate.
Performance and Features of the Gree Extreme Heat Pump
The Gree Extreme is known for its advanced features that not only make it a leader in performance but also in user experience. Here are some standout features of the system we installed:
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Energy Star® Certified: This certification means that the Gree Extreme is highly efficient, which helps reduce energy costs for our client. They can also take advantage of the LogisVert grant offered by Hydro-Québec, saving up to $1704 on their purchase.
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24.5 SEER Efficiency Rating: This high SEER (Seasonal Energy Efficiency Ratio) ensures optimal performance while consuming less energy, which translates to lower monthly electricity bills.
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Wi-Fi Connectivity: The Wi-Fi-enabled Gree Extreme allows the homeowner to control the system remotely using a smartphone. Whether they are at home or away, they can adjust the temperature to their preference, ensuring maximum comfort and energy savings.
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Whisper-Quiet Operation: One of the most remarkable aspects of the Gree Extreme is its quiet operation. The interior unit operates at a mere 34 to 51 dB(A), ensuring it does not disrupt daily activities or the client’s peace. The exterior unit, with a sound pressure level of 59 dB(A), is equally quiet, making it a great choice for urban homes in Montreal where noise can be an issue.
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I-Feel Technology: This unique feature senses the temperature directly from the remote control, ensuring that the desired temperature is always accurately maintained where it matters most—in the space where people are located.
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Intelligent Defrosting: In Montreal's frigid winter months, many heat pumps experience performance issues due to frost buildup on the outdoor unit. However, the Gree Extreme Ultra Heat uses an intelligent compressor defrost system that activates only when necessary. This ensures that the unit runs efficiently and with minimal energy waste, saving the homeowner money while keeping their home warm.
Customizing Comfort with Gree Extreme’s Airflow Features
The Gree Extreme heat pump installed in LaSalle also features four-direction motorized louvers, which help evenly distribute warm or cool air throughout the space. Whether it's keeping the room warm during the bitter winter months or cool during Montreal's humid summer, this system is designed to ensure the air reaches every corner of the room.
The five-speed airflow control allows our clients to precisely adjust the temperature to their comfort level. With a turbo mode for quick heating or cooling, the system can rapidly reach the desired temperature in just minutes, providing a fast response to any climate need.
The Best Warranty in the Industry
Another reason we recommend the Gree Extreme to our clients is its industry-leading warranty. Our LaSalle client now benefits from a full 10-year warranty on all components: the compressor, parts, and labor. This peace of mind ensures they’ll be covered for any issues that may arise, though we don’t expect any with Gree’s track record of reliability.
Environmentally Friendly and Cost-Effective
The Gree Extreme heat pump is an eco-friendly choice, using the R-410A refrigerant which is much kinder to the environment compared to older refrigerants. Additionally, its two-stage compressor ensures that it operates efficiently, even in the most extreme temperatures. Our client can rest assured knowing that their energy consumption—and environmental impact—is minimized, making this installation not only a practical solution for comfort but also a sustainable one.
Why Choose AirGreen for Your HVAC Installation?
At AirGreen, we pride ourselves on delivering superior service and quality installations. Our team of experienced technicians takes every project seriously, ensuring that we exceed expectations in terms of both performance and customer satisfaction. Whether you’re installing a new mini split heat pump, upgrading your current HVAC system, or looking for expert advice on the best heating and cooling solutions for your home, we’re here to help.
By choosing AirGreen, you’re not just getting a top-of-the-line product like the Gree Extreme; you’re also gaining access to our expertise, professional installation, and ongoing support. We care about our customers’ comfort and work hard to ensure they get the most out of their investment in home comfort.
Ready for Your Own Gree Extreme Installation?
If you’re interested in upgrading your home’s heating and cooling system with a Gree Extreme heat pump or any other high-efficiency model, contact us at AirGreen. We serve all areas of Montreal, Laval, Longueuil, the North Shore, and the South Shore. Our experts will help you choose the best solution for your home, and our professional team will handle the installation with the care and precision we are known for.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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).