Installation of a Gree Crossover Wall-Mounted Heat Pump in Saint-Lambert
Step into the story of a Saint-Lambert home transformed by AirGreen with a Gree Crossover Heat Pump, merging top-notch efficiency with aesthetic brilliance.
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The job on one screen
The article, chapter by chapter
Unveiling the Pinnacle of Comfort: A Tale of Innovation and Satisfaction
In the heart of Saint-Lambert, a picturesque suburb known for its tranquil streets and vibrant community life, AirGreen, a leading HVAC company in Montréal, has once again demonstrated its unparalleled expertise in enhancing indoor comfort and efficiency. Our latest project, the installation of a Gree Crossover Wall-Mounted Heat Pump, stands as a testament to our commitment to providing top-tier HVAC solutions across Montreal, Laval, Longueuil, North Shore, and South Shore. This narrative not only showcases our technical prowess but also highlights the incredible benefits that come with choosing AirGreen for your heating, ventilation, and air conditioning needs.
The Challenge: A Unique Installation with High Stakes
Embarking on this project, we faced a set of challenges that tested our skills and determination. The installation site, a charming residence in Saint-Lambert, required a nuanced approach due to the unique architectural features of the home. The Gree Crossover, known for its efficiency, was to be mounted in a way that the compressor found its place discreetly on the wall near the floor, while the interior unit soared high on the second story. This unusual setup demanded precision and careful consideration, especially when working at heights and ensuring the aesthetic integration of the system into the home's design.
A Symphony of Efficiency and Style
The Gree Crossover Heat Pump, boasting a robust 18,000 BTU size and a Medium difficulty level for installation, was selected for its exceptional features:
- State-of-the-Art Efficiency: With an impressive 23.0 SEER rating, the Crossover model is a paragon of energy efficiency, translating into significant savings on energy bills and a smaller carbon footprint.
- Unmatched Comfort in Extreme Temperatures: Capable of heating efficiently down to -30°C, this heat pump ensures comfort during the harshest of winters, a feature particularly appreciated in the fluctuating climates of Quebec.
- Innovative Features Galore: From GREE's proprietary G10 Inverter technology to WiFi control via the GREE+ app, precise airflow control, and eco-friendly R410A refrigerant, every aspect of the Crossover is designed to enhance user experience and environmental sustainability.
- Long-term Peace of Mind: The 10-year comprehensive warranty on the compressor, parts, and labor underscores our confidence in the durability and reliability of this installation.
The AirGreen Difference: Expertise Meets Innovation
What sets this installation apart is not just the technical specifications of the Gree Crossover but the meticulous approach and customer-centric philosophy of AirGreen. Our team navigated the complexities of this installation with ease, ensuring that all components were perfectly aligned, secure, and aesthetically pleasing. The innovative solution to conceal all pipes and electrical wiring under color-matched capping was a testament to our dedication to detail, leaving the homeowner ecstatic with the clean and professional finish.
Beyond Installation: A Commitment to Satisfaction
The story of this installation extends beyond the technical achievements. It's a narrative of a homeowner's trust in AirGreen, a trust we honor with every project we undertake. The seamless integration of the Gree Crossover Heat Pump into their home not only elevates their living comfort but also grants them access to a $570 provincial grant, making this upgrade both financially smart and environmentally conscious.
Why Choose AirGreen for Your HVAC Needs?
Choosing AirGreen means partnering with a team that goes beyond the ordinary to deliver extraordinary results. Our expertise in handling intricate installations, commitment to energy efficiency, and unwavering focus on customer satisfaction are what make us a leader in the HVAC industry. Whether you're in Montreal, Laval, Longueuil, North Shore, or South Shore, we're here to bring unparalleled comfort and efficiency to your home or business.
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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An on-site estimate, the right capacity, the right equipment.
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).