A strategic location in the heart of downtown Montreal
In the heart of the Ville-Marie district, with its modern towers and flat roofs typical of the city center, our AirGreen team installed Gree wall-mounted heat pumps on the roof of a multi-unit building. In a dense urban environment, where every square meter counts, the chosen solution had to combine energy performance, discretion, and installation efficiency.
The compact Gree outdoor units , installed on sturdy metal supports fixed to the gravel of the flat roof, guarantee both stability and resistance to Montreal's extreme weather conditions. The refrigerant pipes and electrical cables, carefully sheathed and insulated, were routed over several meters to reach the apartments without compromising the aesthetics of the building or the integrity of its envelope.
Equipment adapted to Montreal realities
The Gree wall-mounted heat pump
The Gree R-32 wall-mounted heat pump is renowned for its ability to maintain optimal comfort in all seasons, even during the coldest winters. Recent models in the Clivia R32 or Charmo R32 range, frequently installed by AirGreen, offer:
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Reliable operation down to −25°C ,
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Energy Star certified energy efficiency,
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Compatibility with Quebec grant programs such as LogisVert and Greener Homes ,
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A compact design allowing discreet installation even in dense urban environments.
A strategic choice for a city center building
Installing wall-mounted heat pumps in a multi-unit building in Ville-Marie presents specific challenges:
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Restricted access to facades,
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Aesthetic constraints imposed by the co-ownership or municipal regulations,
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Air circulation sometimes limited between buildings.
The choice of placing the units on the flat roof makes it possible to circumvent these constraints while guaranteeing optimal operation of the machines.
Key steps of the installation carried out by AirGreen
1. Preparation and securing of the site
Our team began by assessing the roof structure to confirm its load-bearing capacity. Raised galvanized supports were installed on decks to avoid direct contact with the gravel, thus reducing premature wear due to moisture or snow accumulation.
2. Routing of conduits
The refrigerant pipes and electrical cables were secured over several meters using structured routes. Particular attention was paid to:
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Thermal insulation of pipes,
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UV protection of exposed cables,
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The sealing of the holes made.
3. Connection to indoor units
Each outdoor unit serves compact indoor wall units installed in the homes. This system allows occupants to control their comfort room by room, thus reducing their energy consumption.
4. Verification and commissioning
A series of tests were carried out: leak testing, pressure control, electronic calibration and performance testing in heating and air conditioning mode.
Results obtained and benefits for occupants
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Four-season comfort : efficient warmth in winter, coolness in summer.
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Energy savings : significant reduction in bills thanks to high seasonal efficiency (SEER2/HSPF2).
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Available subsidies : possibility for occupants to benefit from financial assistance programs to quickly make their investment profitable.
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Discreet installation : no unity on the facade, which preserves the aesthetic harmony of the building.
Why choose AirGreen for your heat pump projects in Montreal?
At AirGreen, we have a thorough understanding of the technical and regulatory realities of Greater Montreal . Whether it's a condo in downtown Montreal , a single-family home in Laval, or a plex on the South Shore, our team adapts its methods and recommendations to provide a durable, aesthetic, and perfectly optimized installation.
We support our clients from preliminary design to commissioning, including grant assistance. Our goal: to offer HVAC solutions that truly improve the quality of life and energy efficiency of homes.