A HVAC project adapted to Montreal's urban environment
At AirGreen , we regularly install wall-mounted heat pumps on commercial and residential buildings in Greater Montreal. This project took place in Rosemont–La Petite-Patrie , an area where urban architecture often poses unique challenges, particularly with flat roofs and high building density. Our team was tasked with installing a Gree wall-mounted heat pump designed to ensure comfort and energy performance, while respecting the building's structural and aesthetic constraints.
Installation context
The building in question is a flat-roofed building housing several rental spaces. The owners wanted an energy-efficient heating and cooling solution capable of operating efficiently even in Montreal's bitterly cold winters. They chose a wall-mounted Gree heat pump , renowned for its reliability, high efficiency, and eligibility for energy subsidy programs in Quebec.
Technical details and configuration
Choice of equipment
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Brand: Gree
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Type: Wall-mounted heat pump (mini-split)
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Power: adapted to the rental space served (12,000 to 18,000 BTU depending on the thermal load)
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Performance: Energy Star certified and efficient operation down to -25°C
Flat roof installation
The installation was carried out on the flat roof of the building, with a specific set-up:
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Raised metal support fixed on rubber soles to avoid direct contact with the roof membrane and ensure stability.
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Refrigeration pipes pass through a sealed technical chimney to ensure watertightness.
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Condensate management by gravity drainage, facilitated by the slope of the roof.
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Respect ventilation clearances to optimize condenser performance and extend its lifespan.
Constraint and solution
One of the major constraints was the presence of several existing roof lanterns and ventilation ducts . To avoid any risk of interference, our team carefully selected the location of the outdoor unit, ensuring future access for maintenance and free air circulation.
The advantages of this installation
For the owner
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Substantial energy savings thanks to Gree inverter technology.
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Four-season comfort : efficient air conditioning in summer, efficient heating in winter.
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Reliability : heat pump designed to withstand Quebec winter conditions.
For the building
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Discreet integration on the roof, avoiding cluttering visible facades.
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Easy accessibility for maintenance without disturbing occupants.
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Real estate valuation thanks to a modern and certified HVAC system.
Grants and incentives available
Building owners located in Montreal, Laval, Longueuil, the North Shore, and the South Shore can benefit from programs such as LogisVert or Hydro-Québec incentives for the installation of high-performance heat pumps. The Gree wall-mounted heat pump used in this project meets the required energy efficiency criteria, thus maximizing the return on investment.
Final result
This Gree wall-mounted heat pump installation in Rosemont perfectly illustrates our team's ability to adapt our interventions to urban realities. By combining technical expertise , respect for architectural constraints and energy optimization , we offered this client a sustainable and efficient solution.
At AirGreen, we are committed to providing turnkey HVAC installations that ensure comfort and peace of mind, whether for residential, commercial or mixed-use buildings, throughout Greater Montreal.