Installation of a Gree Flexx R32 central heat pump in Sainte-Dorothée, Laval
Installation of a Gree Flexx R32 central heat pump in Sainte-Dorothée, Laval. An energy-efficient solution from AirGreen, combining performance, comfort, and HVAC expertise in Laval, Montreal, the North Shore, and the South Shore.
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 Gree Flexx R32 central heat pump installation designed for comfort and performance in all seasons
At AirGreen , we recently completed a complete installation of a Gree Flexx R32 central heat pump in Sainte-Dorothée, Laval . This project perfectly illustrates our expertise in HVAC installation for single-family homes on the North Shore, where energy performance and reliability must go hand in hand with indoor comfort.
The choice of the Gree Flexx R32: efficiency and innovation
The Gree Flexx R32 is a state-of-the-art central heat pump, designed to deliver exceptional energy efficiency and consistent performance even in the coldest Quebec weather. Its variable-speed compressor and use of R-32 refrigerant, which is more environmentally friendly than R-410A, make it a sustainable and energy-efficient solution.
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Capacity: from 2 to 5 tonnes depending on the configuration of the home
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Operating temperature: up to −25°C
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Seasonal Efficiency Ratio (SEER): up to 18
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Refrigerant: R-32 (low global warming potential)
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Eligible for several grants (including federal and provincial energy efficiency programs).
A neat and durable central installation
The installation in Sainte-Dorothée presented several technical challenges, including the proximity of a gas line and the need to ensure a perfectly watertight drainage system. Our technicians opted for installation on an insulated slab and integrated sheathed and insulated wiring to ensure optimal system longevity.
The carefully insulated refrigerant piping has been positioned to minimize heat loss and facilitate future maintenance. The entire system is protected by sturdy capping, ensuring a clean and professional appearance.
Safety, efficiency and exemplary finish
Every detail has been checked:
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Perfect alignment of the outdoor condenser for optimal airflow.
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Clearances in accordance with Gree manufacturer's recommendations.
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Gravity condensate drainage , thus avoiding any risk of backflow.
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Electrical connection protected by a waterproof box, compliant with the standards of the Canadian Electrical Code.
Despite rainy weather on the day of the intervention, our teams worked efficiently while respecting safety and waterproofing protocols. This attention to detail is an integral part of the AirGreen philosophy: sustainable, safe and guaranteed work .
Year-round comfort and energy savings
With this Gree Flexx R32 central heat pump, the client now benefits from a centralized heating and cooling system that ensures a consistent temperature throughout the home. In winter, the heat pump harnesses external energy to significantly reduce heating costs. In summer, it ensures cool, consistent comfort, even during heat waves.
Energy efficiency gains result in:
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Up to 35% savings on annual electricity bill ;
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A significant reduction in the carbon footprint ;
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A silent system inside and out.
An installation by AirGreen: local expertise in Laval
For several years, AirGreen has been recognized for its expertise in central heat pump installation in Laval, Montreal and on the North Shore . Our RBQ-certified teams not only ensure quality installation, but also complete compliance with Quebec electrical and mechanical standards.
In Sainte-Dorothée, this new installation adds to a long list of successful projects, where owners benefit from superior comfort and maximized energy efficiency, all supported by our personalized after-sales service .
Why choose AirGreen for your central heat pump?
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Free and transparent technical assessment before any project.
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Certified and trained team on Gree, Midea, Fujitsu and Sharp models.
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Full labor and parts warranty .
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Respect for deadlines and cleanliness of the site .
By choosing AirGreen, you benefit from a trusted partner who puts your comfort at the heart of each installation.
Conclusion: a sustainable investment for smart comfort
The installation of this Gree Flexx R32 in Sainte-Dorothée demonstrates that a well-chosen and properly installed HVAC system can transform a home's energy efficiency while significantly improving daily comfort. At AirGreen, we believe that every project deserves the same rigor and attention to detail.
For your next central heat pump installation in Laval or on the North Shore , call AirGreen , your trusted HVAC expert.
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 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.
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.
- 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.
Which type of equipment for your project?
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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).