Installation of a Gree Flexx Central Heat Pump in Côte Saint-Luc, Montreal
AirGreen delivers top-notch HVAC solutions! Read about our recent installation of a Gree Flexx Central Heat Pump in Côte Saint-Luc, Montreal, and how we helped a customer transition to a full electric system.
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.
It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.
The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.
A shut-off switch near the outdoor unit isolates it safely for service.
Sitting on the indoor module, it moves heat between the house air and the refrigerant.
Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.
Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.
It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.
It runs the heat pump and the backup heat. It must be compatible with the installed system.
A New Era of Comfort and Efficiency
At AirGreen, we are committed to providing our customers with the highest quality HVAC services in Montreal, Laval, Longueuil, Rive-Nord, and Rive-Sud. Our recent installation in Côte Saint-Luc, Montreal, demonstrates our dedication to delivering top-tier solutions that meet the unique needs of our clients.
The Client's Challenge
Our client in Côte Saint-Luc needed to replace their central heat pump. They also expressed a desire to add an electric furnace to their home. Previously, they had an oil tank and were eager to switch to a fully electric system, taking advantage of the federal government's $5000 rebate.
Our Solution: The Gree Flexx Central Heat Pump
We recommended the Gree Flexx Central Heat Pump, a state-of-the-art HVAC system known for its efficiency and reliability. This 3-ton unit is perfectly suited to the client’s home, providing ample heating and cooling capacity.
The Gree Flexx is a flagship model in the HVAC industry, boasting an impressive SEER efficiency rating of 18.0 and an HSPF of 11.0. It operates at a sound pressure level of 57.0 dB(A), making it a quiet addition to the home. The unit uses R-410A refrigerant, known for its low environmental impact.
The Gree Flexx is also eligible for the $5000 federal rebate, making it an economically smart choice for our client.
Installation Process
The installation process was of moderate difficulty. Our team of certified technicians worked diligently to ensure a seamless installation. We replaced the old central heat pump and added an electric furnace, creating a complete heating solution for the client’s home.
The Gree Flexx is designed to heat the entire home, even at temperatures as low as -30°C. The electric furnace automatically activates at -31°C, ensuring the home always has access to heat.
Customer Satisfaction
Our client was thrilled with their new Gree Flexx and the added electric furnace. They were particularly pleased with the 10-year warranty on everything, including labor. This warranty provides peace of mind, knowing that any potential issues will be promptly addressed by our dedicated team.
The AirGreen Difference
At AirGreen, we take pride in our commitment to customer satisfaction and our expertise in HVAC solutions. Our recent installation in Côte Saint-Luc is just one example of how we tailor our services to meet the unique needs of our clients.
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 ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
The equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
Access protected, old unit disconnected and removed when it is being replaced.
Electric furnace or air handler, with its coil, connected to the supply and return ducts.
On a level base, raised above the snow, with free space all around.
Insulated, they enter through a sealed opening and run to the indoor coil.
Dedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
Leak test, vacuum, start-up, airflow check and a test of both modes.
Filter, thermostat, backup heat in extreme cold: what to know before winter.
- The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
- The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
- Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
- The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
- The outdoor unitOn a level base, raised above the snow, with free space all around.
- The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
- Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
- Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
- The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
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.
- Check the indoor module's filter.
- Clear winter debris from the outdoor unit.
- Test cooling before the heat arrives.
- Check the filter more often in peak season.
- Keep registers and returns clear.
- Watch condensate drainage near the coil.
- Change or clean the filter.
- Test heating and backup heat before the cold.
- Book periodic maintenance.
- Clear snow around the outdoor unit.
- Store nothing in front of the indoor module.
- Note any unusual noise or smell and call us.
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. A central heat pump uses the house's ducts.
It connects to the existing ducts to heat and cool everywhere.
2. In extreme cold, electric backup heat can take over.
The indoor module (furnace or air handler) works with the heat pump and takes over in extreme cold.
3. The filter only gets changed when the unit breaks down.
A dirty filter cuts airflow. It gets checked regularly.
4. You can reuse the old unit's size without checking.
The house may have changed: insulation, windows, added rooms. Capacity is confirmed on site.
0 / 4 right answers
What people ask us about this kind of work
Can I keep my current ducts?
What happens in extreme cold?
Furnace, air handler, ducted: what is the difference?
Are there grants?
Do I need a permit?
How much can I save?
How is the LogisVert assistance calculated?
Will my current thermostat work?
Central or wall units: which one?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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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).