Installation of a Gree Flexx R32 central heat pump in Sainte-Dorothée
Installation of a Gree Flexx R32 central heat pump in Sainte-Dorothée. AirGreen delivers a high-performance, quiet, and energy-efficient HVAC solution, ideal for the Greater Montreal climate.
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.
Careful installation of a high-efficiency central heat pump from AirGreen
In Sainte-Dorothée, a green residential area of Laval, our AirGreen team recently completed the installation of a Gree Flexx R32 central heat pump , a solution that is efficient, discreet, and energy-efficient. This new-generation R-32 model is designed to provide optimal four-season comfort while reducing the home's environmental footprint.
A thoughtful choice for lasting comfort
Our clients wanted to replace their old heating system with a modern and more economical solution , capable of providing both heating and cooling throughout the year. After analyzing the thermal needs of the house and its configuration, the Gree Flexx R32 emerged as the best choice. This central heat pump offers exceptional performance, even at -30 °C , while consuming up to 30% less energy than a system using R-410A refrigerant.
A controlled technical installation
For this typical Laval residence, with an open outdoor space at the back and a concrete structure, we have:
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Positioned the Gree condenser on a raised aluminum platform , ensuring perfect stability and protection against humidity and snow.
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Installed a compact gravel bed and leveled concrete slabs for optimal water drainage.
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Routed the refrigerant lines in a gray cover that matches the facade, ensuring a clean and professional appearance.
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Connected everything to an existing indoor air manager , after checking and calibrating the air flow.
This attention to detail not only ensures maximum performance , but also increased longevity of the system.
Quiet and energy-efficient operation
The Gree Flexx R32 central heat pump features a variable-speed inverter compressor and R-32 refrigerant , which improves heat transfer while reducing greenhouse gas emissions. The result: reduced energy consumption , minimal noise , and a stable indoor temperature throughout the year.
Subsidies and long-term savings
Thanks to its Energy Star certification and R-32 technology, this installation is eligible for grant programs offered by Transition Énergétique Québec and Canadian federal programs for conversion to high-efficiency systems. Customers can thus significantly reduce their initial investment , while enjoying ongoing savings on their energy bills.
The key benefits of this installation
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High seasonal energy efficiency (SEER) , adapted to Quebec's climate.
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Reliable operation at low temperatures down to −30°C.
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Inverter compressor for constant comfort and precise control.
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Aesthetic and durable installation , protected from bad weather.
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Eligibility for provincial and federal grants .
AirGreen know-how at every stage
At AirGreen, we believe that a successful HVAC installation is built on three pillars: technical expertise , aesthetic care , and customer satisfaction . For this Sainte-Dorothée property, every step—from unit selection to commissioning—was carried out with rigor and transparency. The result: a high-performance central heat pump , properly installed, and ready to provide lasting comfort for years to come.
In conclusion
This Gree Flexx R32 central heat pump installation in Sainte-Dorothée perfectly illustrates our commitment to providing high-performance, energy-efficient HVAC solutions for homes in Greater Montreal. Thanks to the combination of AirGreen expertise and Gree technology , our customers benefit from optimal comfort, elegant aesthetics, and a sustainable investment.
AirGreen – Heat pump installation experts in Laval, Montreal, Longueuil, North Shore and South Shore.
Trust our team for your residential or commercial heating, ventilation and air conditioning projects.
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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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).