Installation of a Gree Flexx Central Heat Pump in Town of Mount-Royal, Montreal
In the serene Town of Mount-Royal, a noisy HVAC system met its match. Join us on this journey of silent comfort with the Gree Flexx Central Heat Pump.
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.
The Silent Revolution: A Story of Comfort and Efficiency
The Backstory: A Quest for Silence
In the serene Town of Mount-Royal, a resident was facing a peculiar challenge. Their old HVAC system, though once a beacon of comfort, had now turned into a noisy monster. The constant hum and rattle had become a daily disturbance, not just for the homeowner but also for the peace-loving neighbour next door. The homeowner had a list of non-negotiable demands for the new system - it had to be silent, efficient, and come with a robust warranty. Enter AirGreen, the HVAC heroes of Montréal.
Why Gree Flexx was the Perfect Choice
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Silence is Golden: With a sound pressure level of just 57.0 dB(A), the Gree Flexx ensures that peace prevails. No more complaints from the neighbours!
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Extreme Efficiency: Operating efficiently even at -30°C, this machine doesn't let the Canadian winters stand a chance. With an impressive 18.0 SEER, 11.0 HSPF, and 10.0 EER, it's a model of efficiency.
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Generous Grants: The federal grant of $5,000 was a cherry on top. Not only did the homeowner get a state-of-the-art system, but they also availed a handsome rebate.
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Warranty Wonders: A 10-year warranty on everything - compressor, parts, and labor. It's not just a machine; it's a decade-long promise of comfort.
The Installation Saga: Excellence at Every Step
Our team at AirGreen believes in perfection. Before diving into the installation, we took a step back. We inspected the old pipes, ensuring they were free from cracks and holes. Once we were convinced of their integrity, we gave them a professional cleaning. Only then did the new Gree Flexx find its place. Every step was taken with precision, ensuring a seamless blend of old infrastructure with new technology.
Diving Deeper into the Gree Flexx
For those who love the nitty-gritty details, here's a closer look at this marvel:
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Heating and Cooling Capacity: Whether it's the biting cold or the scorching heat, with a heating capacity that works efficiently even at -30°C and a cooling capacity of 36,000 BTU, the Gree Flexx is always up for the challenge.
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Dimensions: Compact yet powerful, the exterior dimensions are 37 x 18.13 x 32.25.
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Connectivity: In this age of smart homes, how can our HVAC systems lag? The Gree Flexx comes with WiFi included, ensuring you're always connected.
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Safety and Sustainability: With R-410A Freon gas, it's not just about comfort but also about being environmentally responsible.
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Unique Identifiers: For those who appreciate the specifics, the serial number for the exterior is FLEXX36HP230V1AO, and its AHRI number is 205984663.
A Happy Ending to a Perfect Installation
Our story in the Town of Mount-Royal had a fairy-tale ending. The homeowner, now basking in the comfort of their new Gree Flexx, couldn't be happier. The neighbour? Let's just say they're sleeping a lot better these days.
At AirGreen, we don't just install HVAC systems; we craft stories of comfort, efficiency, and happiness. So, if you're looking for a change, you know who to call!
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).