Installation of a Gree Flexx Electric Furnace in Saint-Eustache
Find out why our Saint-Eustache client is thrilled with their Gree Flexx Electric Furnace and how it combines cost savings with exceptional comfort.

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 Step Towards Sustainable Comfort
Discovering the Gree Flexx: A Blend of Efficiency and Innovation
Nestled in the serene community of Saint-Eustache on Montreal's North Shore, a recent installation by AirGreen not only exemplified our commitment to quality and customer satisfaction but also marked a significant step towards sustainable heating solutions. The project involved replacing an outdated furnace with the cutting-edge Gree Flexx Electric Furnace, a decision driven by both environmental incentives and the desire for technological advancement.
Why Choose the Gree Flexx?
The Gree Flexx is not just any electric furnace; it's a pinnacle of innovation tailored to modern needs. This 3-ton marvel offers an impressive 36,000 BTU cooling capacity, and its dimensions (21.25 x 48.25 x 21.25 inches) ensure it fits seamlessly into the existing infrastructure. Key features that make the Flexx an industry leader include:
- Energy Efficiency: Rated up to 20 SEER and 10.5 HSPF, optimizing energy use and reducing costs.
- Advanced Heating Technology: Capable of heating efficiently even when temperatures plummet to -30°C, ensuring comfort in the harshest winters.
- Ultra-Quiet Operation: At just 45 dB(A), it's as quiet as a library, making it perfect for residential areas.
- Eco and Powerful Modes: Adaptable performance to save energy or enhance comfort as needed.
- Innovative Controls: Features like an illuminated wireless remote, automatic changeover, auto-fan speed control, and optional Wi-Fi thermostat integration for ease of use.
Installation Highlights: A Story of Precision and Customer-Centric Service
The installation process in Saint-Eustache was straightforward yet meticulous, focusing on longevity and reliability. Here’s how we ensured excellence:
- Reuse and Recycle: We successfully repurposed the existing ductwork and electrical setups, which not only saved costs but also minimized environmental impact.
- Leak Checks and Cleaning: No stone was left unturned in checking the old pipes for leaks and thoroughly cleaning them to ensure they were free from any contaminants.
- Professional Execution: Our team’s attention to detail and cleanliness during the installation left a lasting impression on the homeowner.
Client Satisfaction and Environmental Benefits
The homeowner's choice to upgrade to the Gree Flexx was substantially rewarded. Not only did they benefit from a $2,880 LogisVert Grant from Hydro-Québec, but the transition also positioned them for greater energy savings and reduced carbon footprint. The long-term 12-year warranty on parts and compressor from Gree underscores reliability and customer trust.
Why AirGreen is the Preferred Choice for HVAC Services
Choosing AirGreen means opting for a partner who values your comfort and strives to enhance your living environment through sustainable solutions. Our approach is characterized by:
- Tailored Solutions: Each installation is thoughtfully planned to meet specific client needs and building specifications.
- Certified Excellence: We only use the latest and most reliable technology, backed by industry-leading warranties.
- Commitment to Customer Satisfaction: From the initial consultation to the final quality check, our team ensures every phase of the project exceeds expectations.
Join the Eco-Friendly Revolution
By integrating advanced technology like the Gree Flexx, AirGreen not only guarantees comfort but also contributes to a healthier planet. If you're considering an HVAC upgrade, think no further than the trusted hands at AirGreen. Our installations are more than just transactions; they are investments in a sustainable future.
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).
