Installation of a Gree Crossover Wall-Mounted Heat Pump in Oka, North Shore
Ever wondered how silent a heat pump can be? Read how our Gree Crossover installation in Oka transformed a night's sleep!
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 Cozy Transformation: Gree Crossover Brings Comfort to Oka Home
A Personal Touch for Optimal Comfort
Last week, the team at AirGreen embarked on a straightforward yet significant project in Oka, on Montreal's North Shore. Our mission was simple: enhance the bedroom comfort of a homeowner whose existing central heating and air conditioning system fell short in providing adequate warmth and coolness. Our solution—a Gree Crossover wall-mounted heat pump—not only addressed the temperature inconsistencies but did so with whisper-quiet operation, crucial for uninterrupted sleep.
Choosing the Right Equipment
Selecting the Gree Crossover was no random choice. This model excels in efficiency and comfort, boasting a cooling capacity of 9,000 BTU and a heating performance effective down to -30°C. It's compact, yet powerful, featuring:
- Energy Star® certification
- AHRI listed (AHRI#206395963)
- High SEER rating of 25.3
- Integrated WiFi for smart control
- Ultra-quiet interior operation at 25 dB(A)
Our client emphasized the need for a system that would operate almost unnoticed, especially important during the night. The Gree Crossover, with its interior sound pressure level as low as 25 dB(A), ensured that our installation would not disturb the serene quiet of a bedroom setting.
Installation Excellence
The installation process itself was marked by precision and cleanliness. We meticulously concealed all pipes and wiring behind the unit, securing a sleek look with no need for subsequent wall repairs or touch-ups. This not only preserved the aesthetic integrity of the room but also exemplified our commitment to a tidy and efficient installation process.
Warranty and Support
Understanding the importance of reliability and customer peace of mind, the Gree Crossover comes with an outstanding 10-year warranty on all fronts—compressor, parts, and labor. This comprehensive coverage is a testament to the quality and durability of the product, ensuring that our clients enjoy years of trouble-free operation.
Smart Features for Modern Living
The Gree Crossover is more than just a heat pump; it's a gateway to enhanced home comfort through technology. With features such as:
- GREE's G10 Inverter Technology
- Adjustable LED display
- Multi-speed fan
- Washable dust filters
- Dehumidification mode
it integrates seamlessly into the modern smart home ecosystem. Controlled via the GREE+ app, our clients can adjust settings remotely, enhancing their comfort without compromising on energy efficiency.
Client Satisfaction
Feedback from our client was overwhelmingly positive. They were particularly impressed by how the heat pump’s features translated into real-world benefits—silent operation, effective heating and cooling, and an unobtrusive design that fits perfectly within the space.
AirGreen's Promise
At AirGreen, we don’t just install HVAC systems; we enhance environments and enrich lives through tailored solutions. Our professional team ensures that each installation is a step toward more sustainable and comfortable living. With a focus on high-quality products like the Gree Crossover and attention to detail, we are your trusted partner in indoor climate control across Montreal, Laval, Longueuil, and the North and South Shores.
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).