Installation of a Gree Crossover Mini Split in Montréal
Explore the innovative features of the Gree Crossover 12,000 BTU mini split, designed for Montréal’s climate. Efficient, quiet, and eligible for grants—find out why it’s a top choice!
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.
Installing the Gree Crossover Mini Split in Montréal
A Perfect Balance of Comfort and Efficiency: The Gree Crossover Mini Split
At AirGreen, we recently had the pleasure of installing the Gree Crossover 12,000 BTU mini split at a residential property in Montréal. This cutting-edge ductless wall-mounted system is not just another installation for us—it’s a statement of our commitment to energy efficiency, reliability, and optimal comfort. In this article, we’ll dive into the unique features of this model, the specifics of the installation process, and why it’s an excellent choice for homes in the Greater Montréal area.
Why the Gree Crossover is Ideal for Montréal’s Climate
When it comes to handling extreme Canadian weather, the Gree Crossover series stands out. This unit is designed to provide both heating and cooling at extreme temperatures. With a cooling capacity of 12,000 BTU and the ability to heat efficiently down to -30°C, it ensures comfort in all seasons.
Key Features of the Gree Crossover Mini Split
- Energy Star® certified: This unit meets the highest standards for energy efficiency, ensuring lower utility bills.
- WiFi-enabled: It offers seamless remote control via the GREE+ app, making it convenient to adjust settings from anywhere.
- Quiet Operation: With an interior sound level as low as 27 dB(A) and exterior sound level at 52 dB(A), it operates quietly, maintaining a peaceful environment.
- AHRI-certified: The unit is listed under AHRI #206395961, guaranteeing its efficiency and performance.
- Efficient R-410A refrigerant: The Gree Crossover uses eco-responsible refrigerant, which aligns with modern environmental standards.
Installation Highlights: From Start to Finish
Site Preparation
Our team began by carefully assessing the installation site. Located in a typical Montréal neighborhood, the residence required a solution that could withstand harsh winter conditions while offering effective cooling during hot summers. This is where the Gree Crossover truly shines, given its capacity to deliver year-round comfort.
Mounting the Outdoor Unit
One of the challenges we faced was finding the optimal placement for the outdoor unit. Given the compact dimensions (35.38 x 14.88 x 23.5), we were able to install it on a reinforced platform on the roof. This setup not only ensures efficient operation but also reduces noise transmission into the living space.
Interior Unit Installation
The interior unit was installed in the main living area, chosen for its central location to maximize airflow distribution. With a compact design measuring 32.5 x 7.69 x 11.5, it integrates seamlessly with the room’s decor while providing effective cooling and heating.
Pipe and Electrical Work
- Copper piping was carefully installed, adhering to the unit’s requirements of 1/4 - 1/2 dimensions. This ensures optimal refrigerant flow.
- We ran the 220V electrical line, ensuring it was securely connected to the main panel. This low-voltage start feature minimizes energy consumption during startup, aligning with energy efficiency goals.
- The installation team used insulated brackets to hold the unit firmly, minimizing vibration and noise.
A Unit Built for Comfort and Convenience
The Gree Crossover is more than just a mini split; it’s an all-in-one solution for residents of Montréal, Laval, Longueuil, and surrounding areas. Here are some additional features that make it an excellent choice:
Smart Controls for Modern Living
Equipped with WiFi connectivity, users can control the Gree Crossover from their smartphones via the GREE+ app. This feature makes it easy to adjust temperatures, set timers, or activate specific modes, even when you're not home. The app also provides diagnostic alerts, helping to ensure timely maintenance and troubleshooting.
Advanced Technology for Superior Performance
- G10 Inverter technology: This ensures stable and efficient performance while reducing energy consumption.
- Anti-corrosion coating: The outdoor unit is equipped with fins that resist rust and corrosion, making it durable even in Montréal’s snowy and wet conditions.
- Turbo mode: For those days when you need a quick temperature boost, the turbo mode ramps up the cooling or heating capacity.
Enhanced Air Quality
The Gree Crossover goes beyond basic heating and cooling—it contributes to better indoor air quality. With washable dust filters and an integrated dehumidification feature, it helps maintain a healthy and comfortable environment.
Eligible for Grants and Extended Warranties
One of the highlights of this installation is its eligibility for the LogisVert grant by Hydro-Québec, which offers a $385 rebate. Additionally, the Gree Crossover comes with an impressive 10-year warranty on parts, the compressor, and labor, ensuring long-term peace of mind for homeowners.
Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we take pride in offering more than just installations; we provide solutions that enhance the quality of life. Our team is dedicated to ensuring that each installation is done with precision, care, and a focus on customer satisfaction. Here’s what sets us apart:
- Expert Technicians: Our installation team has years of experience working with Gree systems, ensuring each unit is set up for optimal performance.
- Quick Turnaround: From site inspection to the final installation, we strive to offer a smooth and timely process.
- Customer-Centric Approach: We offer detailed guidance on maximizing your new system’s performance, including tips on settings, maintenance schedules, and energy-saving measures.
Final Thoughts on the Gree Crossover Installation in Montréal
The installation of the Gree Crossover mini split at this residence in Montréal is a testament to our dedication to providing high-quality, energy-efficient solutions. With its state-of-the-art features, robust build, and eligibility for financial incentives, it stands out as a top choice for homeowners in the Greater Montréal area. Whether you’re looking to beat the summer heat or stay warm during the cold winter months, the Gree Crossover delivers unmatched performance.
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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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).