Three wall units installed on a typical Montreal brick facade
At AirGreen , we recently completed a meticulous installation of three Sharp ZU1 wall-mounted heat pumps in a residential building in the Rosemont–La Petite-Patrie sector of Montreal. This project perfectly illustrates our expertise in HVAC installation in multi-unit buildings, typical of Montreal's urban fabric with their brick facades and semi-buried basements.
A smart choice: the Sharp ZU1 series
Sharp ZU1 wall-mounted heat pumps are among the latest models that operate on R-32 refrigerant , known for its low environmental impact and energy efficiency. Each unit installed here offers a capacity of 12,000 BTUs , ideal for maintaining stable comfort in homes of approximately 800 to 1,000 sq. ft.
Among the main advantages of this series:
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Stable performance down to −25°C , ensuring reliable heating even during Montreal's harsh winters.
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Inverter technology , guaranteeing fine modulation of power to reduce energy consumption.
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Quiet operation , perfect for high density residential buildings.
A harmonious and technical outdoor installation
The project involved three outdoor units securely mounted on galvanized steel wall brackets . Their precise alignment and optimal spacing ensure:
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Efficient ventilation between each unit.
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A reduction in vibrations and noise transmitted to the structure.
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Increased safety against snow and ground moisture.
The refrigerant lines were carefully sheathed in discreet white wiring , running along the façade before being routed into the building. The entire refrigeration circuit was sized to ensure minimal losses, with gravity drainage avoiding the use of a condensate pump.
Context: a typical Rosemont plex
The building features typical Montreal brick plexes , with a side entrance and a semi-buried basement. In this context, the installation required:
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Precise fixing on foundation wall with chemical sealing.
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A hole through the brick and concrete walls, carefully insulated.
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Optimized cable routing to minimize visual impact.
The result: an aesthetic, safe installation that complies with current HVAC standards in the Montreal region.
An energy-efficient solution eligible for subsidies
Sharp ZU1 R-32 models are eligible for Quebec financial assistance programs (such as Rénoclimat and Chauffez Vert ), due to their high energy efficiency and superior low-temperature heating performance. This allows homeowners to achieve significant savings, both at installation and in the long term.
A project delivered on time and without compromise
Our AirGreen team coordinated:
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Electrical planning and compliance with the existing panel.
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Drilling and sealing of conduits.
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Installation and pressure testing of refrigerant circuits.
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Final calibration for optimal performance of each unit.
Thanks to our experience in multi-zone installations and multi-unit buildings , the project was completed in less than a day, with a clean, functional and durable result.
Why use AirGreen for your HVAC installation in Montreal?
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Specialists in Montreal's climate and urban constraints (restricted access, heritage facades, dense neighborhoods).
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Certified technicians for Sharp, Gree, Fujitsu, Midea and many other brands.
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Complete service : free estimate, installation, maintenance and HVAC repair.
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Satisfaction guarantee on every project.
In summary
This installation of three Sharp ZU1 wall-mounted heat pumps in Rosemont–La Petite-Patrie demonstrates our commitment to quality, precision, and durability . By combining the energy efficiency of R-32 with expert installation, we offer our customers four-season comfort, with a constant focus on efficiency and aesthetics.