An installation designed for winter efficiency on flat roofs
At AirGreen , we recently completed a Sharp ZU1 wall-mounted heat pump installation in the Ahuntsic-Cartierville neighborhood of Montreal. This intervention perfectly illustrates our expertise in residential HVAC in demanding winter conditions, typical of Greater Montreal.
A typical Montreal context: flat roof and abundant snow
The affected building has a flat roof covered in snow , a common scenario for residential and commercial buildings in Ahuntsic-Cartierville. To ensure optimal performance, we installed the outdoor unit on a raised, sturdy aluminum structure , thus avoiding direct contact with snow and ensuring adequate ventilation of the Sharp ZU1 condenser .
This strategic elevation prevents ice buildup around the compressor, extends equipment life and optimizes performance even during the extreme cold of January and February.
Technical details and choice of heat pump
The Sharp ZU1 is a wall-mounted heat pump using R-32 refrigerant , designed to offer stable performance down to −30°C , making it an ideal solution for the Montreal climate. This range is distinguished by:
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a high energy efficiency ratio (SEER) ,
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Inverter technology ensuring quiet and modulated operation,
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and compatibility with Quebec subsidy programs for high-efficiency appliances.
The unit installed here is a Sharp ZU1 18,000 BTU model, ideally suited to a medium-sized residential space.
Challenges and solutions on the ground
Installing a heat pump on a flat roof in the middle of winter presents several challenges:
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Secure access to the snow-covered roof.
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Prevention of icing around refrigeration connections.
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Maintaining an effective drainage slope for condensate despite low temperatures.
Our technicians therefore have:
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Used a four-legged galvanized stand to raise the unit over 40 cm above snow level.
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Protect the refrigerant pipes using insulated white capping , guaranteeing thermal insulation and a neat aesthetic.
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Checked the structural stability of the roof before installation to avoid overloading due to snow accumulation.
Result: uncompromising four-season comfort
Thanks to this installation, the customer now benefits from efficient heating in winter and effective cooling in summer , while achieving substantial energy savings . The Sharp ZU1 ensures a stable temperature, quiet operation and increased longevity thanks to its simplified maintenance and its compressor designed for the Quebec climate .
Why choose AirGreen for your heat pump projects in Montreal
At AirGreen, we make it a point of honor to adapt each HVAC installation to the architectural and climatic realities of the Montreal region. Whether it's a flat-roofed plex , an urban condo , or a suburban home , our team guarantees:
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an installation compliant with CSA and RBQ standards ,
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an aesthetic and functional integration ,
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and complete assistance with energy subsidy procedures (Hydro-Québec, Energy Transition Québec, etc.).
In summary
This Sharp ZU1 wall-mounted heat pump installation in Ahuntsic-Cartierville once again demonstrates AirGreen's commitment to providing efficient, sustainable solutions adapted to the Quebec climate . Each project is an opportunity for our team to combine cutting-edge technology and local know-how , ensuring our customers optimal comfort all year round.