Installation of a Gree Flexx Central Heat Pump in Ville-Marie, Montreal
Rain or shine, AirGreen installs the Gree Flexx heat pump seamlessly. Discover unmatched efficiency and durability on a Montreal rooftop!
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The article, chapter by chapter
A Rainy Rooftop Revolution with the Gree Flexx
In the heart of Ville-Marie, Montreal, an unassuming rooftop became the stage for a remarkable display of resilience and technical expertise as our team at AirGreen installed the latest in heating technology, the Gree Flexx Central Heat Pump. Despite the challenges posed by a rainy day, our skilled technicians demonstrated why AirGreen is the go-to choice for HVAC solutions, seamlessly replacing an outdated system with a robust, energy-efficient model.
The Scene of Installation
Picture this: a rooftop in Ville-Marie covered with small droplets of rain, hinting at the recent showers. The setting is almost picturesque—the new Gree Flexx heat pump sits elegantly on a wooden base surrounded by gravel, a standard in rooftop installations to ensure proper drainage and stability. The unit, under the overcast sky, not only promises durability but also showcases the rugged readiness of our equipment to operate under varied weather conditions.
Challenges Overcome with Expertise
Installing a 3 Ton, 36,000 BTU heat pump on a rainy day could deter many, but not our AirGreen team. The simplicity of the installation belied the meticulous planning and adaptability required. With rain slicking the surfaces, our team's proficiency in ensuring a safe, swift, and secure installation was more evident than ever—truly a testament to our commitment to excellence, regardless of the weather.
Gree Flexx: Engineered for Excellence
The Gree Flexx model stands out with its impressive specifications. It boasts a heating capacity that endures even -30°C temperatures, making it a stalwart against the harsh Montreal winters. With an 18.0 SEER efficiency, 11.0 HSPF, and 10.0 EER, the Flexx model isn't just about heating; it’s about doing so with remarkable energy efficiency.
Key Features at a Glance:
- Energy Efficiency: Achieves up to 20 SEER and 10.5 HSPF.
- Quiet Operation: Operates at a low noise level of 45 dB(A), ensuring a tranquil indoor environment.
- Economic and Powerful Modes: Balances energy savings with peak performance.
- Advanced Air Filtration: Features a washable air filter, reducing maintenance costs.
- Smart Technology: Includes a self-diagnosis system, automatic restart, and Wi-Fi thermostat control options for enhanced user convenience.
The Impact of the LogisVert Grant
This installation was not only about upgrading to a superior heating solution but also about making it accessible. Thanks to the $2,880 LogisVert Grant by Hydro-Québec, our client benefited significantly, offsetting the installation costs while committing to a greener future. This grant exemplifies our ongoing efforts to provide cost-effective, eco-friendly solutions that don’t compromise on quality.
Why Choose AirGreen for Your HVAC Needs?
Choosing AirGreen means opting for a partner that stands by you regardless of the weather. Our installation of the Gree Flexx heat pump in Ville-Marie underscores our core values: reliability, expertise, and a steadfast commitment to customer satisfaction. Whether it’s a straightforward replacement or a complex new installation, our team ensures a seamless, stress-free experience.
Customer-Centric Approach
We understand that each installation is unique, and our tailored approach ensures that your specific needs and circumstances are addressed with the utmost attention to detail. Our team not only installs; we also educate and empower our customers, ensuring they make informed decisions about their HVAC systems.
Ready for All Weather Conditions
Our expertise isn’t just limited to sunny days. As demonstrated in Ville-Marie, our team is equipped to handle installations under any weather conditions, ensuring that your comfort is never compromised.
Enduring Quality and Support
With the Gree Flexx, customers enjoy extensive warranty periods (12 years for both compressor and parts), emphasizing our commitment to long-term support and reliability.
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 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 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.
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.
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.
- 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.
The right pages, at the right time
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).