Installation of a Gree Unix Full Central System in Rosemont–La Petite-Patrie, Montreal
Facing space constraints in Rosemont–La Petite-Patrie, Montreal, AirGreen's team innovatively installed the Gree Unix system, ensuring a $5000 federal grant for our thrilled customer. Dive in to read our unique installation journey!
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 Challenge Overcome: The Tale of an Unconventional Installation
In the heart of Rosemont–La Petite-Patrie, Montreal, our team at AirGreen faced one of our most challenging installations yet. But as always, we were determined to provide our customer with the best solution without compromising on quality or benefits.
The Dilemma
The customer's space constraints posed a significant challenge. The Gree Unix electric furnace, a state-of-the-art piece of equipment, simply wouldn't fit. We were presented with three options:
- Abandon the installation.
- Opt for a smaller furnace, sacrificing the $5000 federal grant.
- Find an innovative solution.
The first two options were immediately dismissed. Our commitment to our customers meant we had to find a way to make it work.
The Innovative Solution
After consulting with engineers from Gree, we devised a plan to separate the furnace into two halves, allowing it to fit within the limited vertical space available. This was no small feat. The Gree Unix Ultra Heat central electric furnace is renowned for its energy efficiency, operating even in extreme climates and offering up to 70% energy savings compared to traditional systems.
With the guidance of Gree's experts and our top HVAC technician, Luis, we embarked on this unique installation journey. Our dedication didn't stop there. We liaised with RenoClimat representatives to ensure our tailored adjustments would still make the system eligible for the federal grant.
The Outcome
The result? A perfectly installed Gree Unix central system, split into two halves, fitting seamlessly into the customer's space. Not only was the customer ecstatic, but we also ensured they remained eligible for the $5000 "Greener Homes Grant".
Why Choose the Gree Unix System?
- Efficiency: With an impressive 18.0 SEER efficiency, the Gree Unix system is a powerhouse when it comes to energy conservation.
- Performance in Extreme Climates: The system boasts low ambient heating down to -30°C, ensuring comfort even in the harshest of winters.
- Eligibility for Grants: The system qualifies for both the federal and provincial grants, providing significant savings for homeowners.
- Technical Specifications:
- AHRI: 204043222
- Efficiency: 18.0 SEER, HSPF: 10.0, EER: 11.0
- Voltage: 220V
- Sound Pressure Level (Exterior): 56.0 dB(A)
- Gas (Freon): R-410A
- Pipes: 3/8 - 3/4, Heating Capacity: -30°C
- Size: 3 Ton
AirGreen's Commitment
At AirGreen, we pride ourselves on our dedication to our customers. We don't look for the easy way out. We strive to provide the best solutions, even if it means taking the road less traveled. Our 10-year warranty on everything, including labor, is a testament to our commitment to quality and customer satisfaction.
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.
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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?
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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).