Installation of a Gree Extreme 12,000 BTU Mini Split in LaSalle, Montreal
Looking for a heat pump that handles -30°C? Check out our recent Gree Extreme installation in LaSalle! Energy-efficient, quiet, and powerful, it's the perfect HVAC solution for Montreal's climate.
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 Tailor-Made Solution for Comfort in LaSalle
In the heart of LaSalle, Montreal, we recently completed a unique installation that is the perfect example of combining efficiency, innovation, and expert craftsmanship. This project involved the installation of the Gree Extreme 12,000 BTU Mini Split, a cutting-edge wall-mounted heat pump designed for the extreme Canadian climate. With temperatures that can plunge to -30°C, choosing the right HVAC system for a Montreal home is crucial, and the Gree Extreme model was the ideal choice for this particular residence.
The Backstory: Addressing the Client's Needs
Our client in LaSalle had been experiencing fluctuations in home comfort, especially during the harsh winter months. They needed a system that could maintain consistent heating in extreme cold while also providing efficient cooling during the hot and humid Montreal summers. After a detailed consultation, we recommended the Gree Extreme 12,000 BTU Mini Split—a model known for its reliability, even in temperatures as low as -30°C.
The system’s ability to perform in both heating and cooling modes was an essential factor for our client. Additionally, this model qualified for the LogisVert Hydro-Québec grant of $972, significantly reducing the overall cost of installation. Not only would this heat pump provide optimal indoor comfort year-round, but it would also help the homeowner save on energy costs through its energy efficiency of 30.5 SEER.
Installation Challenges and Expert Solutions
Every installation presents its own unique set of challenges, and this project was no different. The home’s exterior layout required our team to carefully plan the placement of both the indoor and outdoor units. The exterior unit, measuring 35.38 x 14.88 x 23.5 inches, had to be mounted in a way that allowed optimal airflow while maintaining the aesthetic appeal of the building.
Furthermore, the Gree Extreme’s heating base had to be installed with precision to ensure that the system could handle condensate freezing, especially during Montreal’s notoriously icy winters. This base, equipped with a heating element, prevents ice buildup, ensuring the unit remains efficient even in sub-zero temperatures.
Inside the house, we installed the compact indoor unit—with dimensions of 38.19 x 8.86 x 11.81 inches—which blended seamlessly into the modern interior décor. The installation process also included connecting the 1/4 - 1/2-inch pipes for refrigerant flow and ensuring all Wi-Fi controls were set up, allowing the client to manage the system remotely via the GREE+ app.
Features of the Gree Extreme Mini Split
Heating Power that Handles -30°C
One of the most impressive features of the Gree Extreme Mini Split is its ability to maintain heating capacity even at -30°C. This was a critical selling point for our client, who, like many in Montreal, has to deal with intense cold snaps during the winter. The two-stage compressor plays a vital role in this, delivering maximum heating power while consuming minimal energy.
Energy Star Certified and Grant Eligible
Efficiency is at the heart of the Gree Extreme. With an Energy Star certification, it qualifies for both federal and provincial grants, making it an eco-friendly and budget-friendly choice for homeowners. The federal grant of up to $5,000 further sweetens the deal, ensuring homeowners can significantly offset their initial investment in a new HVAC system.
Wi-Fi Connectivity and the GREE+ App
One of the perks of installing the Gree Extreme is its Wi-Fi connectivity. Homeowners can control their system remotely via the GREE+ app, adjusting temperature settings, airflow, and even activating the Turbo Mode for rapid temperature changes. This feature offers both convenience and energy savings, as the system can be fine-tuned to meet exact preferences, even when the homeowner isn’t home.
Ultra Quiet Operation
In urban areas like LaSalle, noise pollution can be a concern. Luckily, the Gree Extreme is designed to operate with minimal sound. The indoor unit has a sound pressure level of just 22 dB(A) on its lowest setting—equivalent to a soft whisper. The outdoor unit, at 53.0 dB(A), is quiet enough to blend into the background noise, ensuring the system remains unobtrusive in everyday life.
Why AirGreen?
At AirGreen, we pride ourselves on delivering top-notch service and expert installations that guarantee customer satisfaction. Our experience in handling complex HVAC installations throughout Montreal, Laval, Longueuil, and the surrounding areas ensures that every project is completed to the highest standard.
For this project in LaSalle, we worked closely with the homeowner to address their specific needs—both functional and aesthetic. Our team carefully installed the Gree Extreme mini split in a way that not only maximized performance but also maintained the visual appeal of the home.
The Gree Extreme—A Perfect Fit for Montreal's Climate
Choosing the right HVAC system for Montreal’s unpredictable weather can be a daunting task. The Gree Extreme Mini Split is a proven performer, offering:
- Cooling Capacity of 12,000 BTU
- Heating Capacity down to -30°C
- Turbo Mode for quick temperature adjustments
- Five-speed airflow control
- Intelligent Defrosting System to ensure energy efficiency during the cold months
- Memory Function that allows the unit to restart with the last used settings in the event of a power outage
This system is built to withstand the toughest weather conditions while providing unparalleled comfort year-round.
Conclusion
This recent installation in LaSalle demonstrates AirGreen’s commitment to quality and customer satisfaction. The Gree Extreme 12,000 BTU Mini Split was the perfect choice for a home in Montreal’s challenging climate, offering both heating and cooling at maximum efficiency. From the precise installation process to the cutting-edge features of the unit, this project showcases the expertise and dedication that AirGreen brings to every job.
If you're looking for an HVAC solution that can handle extreme temperatures, while also being energy-efficient and grant-eligible, the Gree Extreme Mini Split is a top contender. At AirGreen, we ensure that every installation is tailored to meet your specific needs, delivering comfort, efficiency, and peace of mind.
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?
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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).
1 comment
quel sont les chiffres en seer et hspf pour les 12000 btu pour toute vos thermopompe disponible merci