Installation of a Gree Crossover Wall-Mounted Heat Pump in Sainte-Marthe-sur-le-Lac
See how a Gree Crossover transformed a living room in Sainte-Marthe-sur-le-Lac into a masterpiece of comfort and design, with AirGreen's expert installation.
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.
A Seamless Integration of Comfort and Design
In the picturesque town of Sainte-Marthe-sur-le-Lac, nestled within the vibrant heart of Montréal's metropolitan area, a recent installation by AirGreen, a leading HVAC company, has set new benchmarks for aesthetic elegance, efficiency, and customer satisfaction in home climate control solutions.
Project Overview
The focal point of this narrative is the installation of a Gree Crossover Wall-Mounted Heat Pump, a paragon of modern heating and cooling technology, which was seamlessly integrated into a quaint living room setting. This project was embarked upon with a set of clear objectives, prioritizing silence, energy efficiency, aesthetic discretion, and financial viability, all of which were achieved with resounding success.
Choosing the Gree Crossover: A Decision Made Easy
The selection of the Gree Crossover model was no coincidence. This machine boasts an impressive array of features that make it a frontrunner in the world of HVAC solutions:
- Energy Star® Certification: A testament to its energy efficiency and eco-friendly operation.
- Wi-Fi Connectivity: Offering the convenience of remote control and monitoring.
- AHRI Certification (206395963): Ensuring performance reliability and operational excellence.
- Exceptional Efficiency: With a 25.3 SEER rating, it stands out for its cost-effective operation.
- Comprehensive Warranty: An unparalleled 10-year coverage on compressor, parts, and labor.
- Quiet Operation: Its indoor sound pressure level is whisper-quiet at 25/40 dB(A), ensuring undisturbed peace and comfort.
- Robust Cooling and Heating Capacities: Perfectly tailored for both sweltering summers and frigid winters, with a cooling capacity of 9,000 BTU and a heating capacity that endures even -30°C.
- Sleek Design: The unit's dimensions are meticulously designed to complement interior aesthetics while providing optimal performance.
The Art of Invisible Installation
The customer's primary concern was the visual impact of the installation. They desired a heat pump that would not only perform excellently but also blend into their living space without the unsightly exposure of pipes and electrical wires. AirGreen's solution? A wall-to-wall installation strategy that was both innovative and practical. By mounting the indoor unit on the exact wall as the outdoor unit, we were able to conceal all necessary pipework and wiring behind the unit, thereby preserving the room's aesthetic integrity. This approach not only satisfied the customer's requirements but also highlighted AirGreen's commitment to bespoke HVAC solutions.
A Testament to Customer Satisfaction
The completion of this project left our client overwhelmingly satisfied, marking yet another successful chapter in AirGreen's history of providing top-notch HVAC services across Montreal, Laval, Longueuil, North Shore, and South Shore. The Gree Crossover installation in Sainte-Marthe-sur-le-Lac stands as a testament to our ability to marry functionality with aesthetics, ensuring that our clients enjoy both the comfort of a climate-controlled environment and the beauty of an unobstructed living space.
Why AirGreen is Your Go-To HVAC Partner
Choosing AirGreen for your HVAC needs means partnering with a company that:
- Prioritizes energy efficiency and environmental sustainability.
- Offers state-of-the-art technology through products like the Gree Crossover heat pump.
- Values customer input and works diligently to meet specific aesthetic and functional needs.
- Provides comprehensive warranty and support, ensuring peace of mind for years to come.
Our commitment to excellence, coupled with our extensive portfolio of successful installations, makes us the premier choice for anyone looking to enhance their home or business with the best HVAC solutions on the market.
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.
More jobs to see, near you
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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).