An invisible but essential performance on the rooftops of the Plateau
On the rooftops of Plateau-Mont-Royal , where century-old buildings meet urban modernity, our AirGreen team recently completed a complete installation of GREE FreeMatch R32 multi-zone heat pumps . This project perfectly illustrates our expertise in residential and semi-commercial HVAC , combining energy efficiency, visual discretion and lasting reliability.
A system designed for the realities of downtown Montreal
Installing on a flat roof in a dense area like the Plateau requires careful planning. The building in question housed several apartments, each requiring individual thermal comfort. We therefore opted for a GREE FreeMatch R32 MultiZone heat pump , capable of powering up to four indoor wall-mounted heads , while maintaining a minimal external footprint.
This system uses R-32 refrigerant, which is more environmentally friendly and offers superior energy efficiency , even in the middle of a Quebec winter. Thanks to its inverter technology and its ability to operate down to -25 °C, the FreeMatch R32 ensures optimal performance all year round.
A perfectly executed technical installation on a flat roof
Preparation and installation of outdoor units
Our technicians first positioned three GREE FreeMatch R32 condensing units on anti-vibration mounts to reduce noise and vibration transfer. Because the roof is accessible and well-insulated, this type of installation allows for easy maintenance while preserving the existing structure.
The refrigeration lines , carefully insulated and sheathed, were routed in a compact configuration to minimize heat losses and ensure smooth circulation of the refrigerant.
Checking the refrigeration circuit and charging with R-32
The photo illustrates a key step: pressure control and R-32 charging . Using a pink refrigerant cylinder , a digital manifold , and a precision electronic scale , our technicians adjusted the charge according to GREE specifications. This precision ensures stable, energy-efficient performance , essential for compressor longevity and reduced consumption.
Safe and methodical work
Safety, cleanliness and performance
On every AirGreen construction site, safety and technical rigor are priorities. Working on a flat roof requires:
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Appropriate personal protective equipment ;
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Complete stabilization of the units ;
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Rigorous management of refrigerants in accordance with current standards.
Our team also took advantage of the intervention to perform a complete electrical wiring check and a start-up test on each unit. The result: balanced pressures, quiet operation, and a consistent interior temperature.
Why the GREE FreeMatch R32 system is ideal for the Plateau-Mont-Royal
The Plateau district is distinguished by its often old buildings, with limited technical spaces. The MultiZone FreeMatch R32 heat pump adapts perfectly to this area thanks to:
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Its compactness : ideal for shared roofs or small outdoor spaces;
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Its high efficiency at low temperatures (down to −25°C);
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Its flexibility : possibility of connecting several indoor wall-mounted, cassette or ducted units;
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Its R-32 refrigerant , less polluting and more efficient;
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Its silent operation , essential in dense urban environments.
An AirGreen installation synonymous with tranquility
At AirGreen, we know that a successful installation isn't just about turning on a device. It's about:
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An accurate assessment of the building ;
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Exact sizing in BTUs ;
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An aesthetic integration ;
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Regular preventive maintenance .
Our Plateau customers now benefit from optimal comfort, summer and winter, and a sustainable solution that reduces both their carbon footprint and their energy costs.
Maintenance and follow-up after installation
Our technicians will return periodically to:
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Check R-32 system pressure ;
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Check insulation and fixings exposed to the climate;
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Clean batteries and filters ;
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Ensure consistent performance throughout the season.
With our AirGreen Protect maintenance program , users maintain their manufacturer's warranty and maximize the lifespan of their system.
In summary
This GREE FreeMatch R32 heat pump installation on a flat roof in Plateau-Mont-Royal demonstrates our technical expertise and commitment to quality, safety, and energy performance . At AirGreen, we continue to help Montrealers reduce their heating and cooling costs while enjoying sustainable, environmentally friendly comfort.