In this typical brick duplex in Rosemont–La Petite-Patrie, the owners wanted to modernize their comfort while reducing their energy bills. They contacted us to replace a traditional electric heating system with a more efficient and flexible solution.
We recommended the installation of two Gree wall-mounted heat pumps , high-efficiency residential units perfectly suited to the building's structure and the reality of Montreal's climate.
The project context: a brick-built Montreal duplex
The building is typical of the area:
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Red brick facade,
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Semi-basement with low windows,
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Asphalt driveway on the side for access and maintenance,
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Clear rear wall, ideal for installing outdoor units.
The client's objectives:
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Ensuring reliable heating in winter while enjoying air conditioning in summer;
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To offer independent comfort for two separate accommodations;
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Clear the ground space and preserve traffic flow in the aisle;
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Choose a silent, economical and discreet solution.
Choosing Gree wall-mounted heat pumps
We proposed two new generation Gree wall-mounted heat pumps , each dedicated to a single dwelling.
Why Gree for this project?
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Inverter technology to modulate power and avoid sudden on/off cycles;
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Excellent performance/price ratio, an important criterion for owners of income-producing buildings;
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Reliable operation in cold climates, ideal for Quebec winters;
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Reduced noise level, which is appreciated in a dense area like Rosemont–La Petite-Patrie.
Each unit offers a capacity of approximately 12,000 BTU , sufficient to cover the main area of a typical Montreal plex (living room + kitchen + hallway), with the ability to quickly heat and cool adjacent rooms.
Technical details of the outdoor installation
The photo clearly shows the two Gree outdoor units mounted high on wall brackets . This choice is not purely aesthetic: it addresses several important technical constraints.
Elevated wall brackets
The two heat pumps are mounted on galvanized steel brackets :
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Raising them approximately 40–50 cm above the ground to protect them from the accumulation of snow , ice and dirt;
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Improved air circulation behind and under the devices;
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Reduced risk of gravel or dirt being thrown into the fan.
Under each unit, we installed anti-vibration pads to reduce the transmission of vibrations into the brick wall and therefore the noises perceived inside the building.
Management of clearances and air circulation
The two units are spaced so that:
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Ensure sufficient clearance between them,
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To prevent the hot air expelled during heating mode from being drawn back into the other appliance,
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Respect the minimum distances recommended by the manufacturer for performance and maintenance.
The installation is located on a clear rear wall, sheltered from prevailing winds and areas of heavy traffic, which prolongs the life of the units and facilitates access for our technicians.
Secure electrical connection
To the right of the second unit, you'll see the external electrical disconnect box , which complies with current standards. This device allows for quick power cut-off for maintenance or in case of emergency.
The wiring and conduits are neatly laid against the wall in order to:
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Protect the wires from shocks and moisture;
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Limit the visual impact on the facade;
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To facilitate any future intervention.
Refrigeration connections and facade aesthetics
The refrigeration connections (insulated copper + communication cables + condensate drain) are grouped and protected in a discreet technical cover running along the vertical metal structure.
This choice allows:
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A clean and uniform finish on the brick facade;
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Mechanical and UV protection of the insulation;
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Improved installation longevity.
At the bottom, the drain is directed in such a way as to avoid passage areas and the creation of ice patches in winter.
Indoor comfort: 4-season heating and air conditioning
Although the indoor units are not visible in the photo, the project of course includes the installation of Gree wall heads inside each dwelling.
Advantages for occupants:
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Rapid heating in autumn and spring without having to start up a complete system of electric baseboard heaters;
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Efficient air conditioning in the summer , particularly appreciated during Montreal's heat waves;
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Precise temperature control thanks to remote controls and operating modes (heating, air conditioning, dehumidification, ventilation);
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Quiet operation, suitable for urban lifestyles where living spaces are often open.
The result: stable comfort all year round , with significantly optimized electricity consumption compared to purely resistive systems.
Performance in Montreal's winter
The selected Gree wall-mounted heat pumps are designed to deliver excellent performance in cold weather , which is crucial in Montreal. In heating mode, they can extract heat from the outside air even when the temperature drops well below zero.
For the customer, this means:
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Less reliance on auxiliary electric heating;
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A reduction in energy costs ;
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A system that remains reliable and safe even during periods of intense cold.
A well-thought-out project, designed for sustainability
In summary, this installation of two Gree wall-mounted heat pumps in Rosemont–La Petite-Patrie is distinguished by:
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A harmonious integration onto an existing brick wall;
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Particular attention is paid to clearances, vibrations and snow management ;
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Protected and well-organized wiring and conduits;
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A choice of equipment that maximizes comfort while reducing operating costs.
Every detail has been considered to offer the owner a reliable, efficient and easy-to-maintain system in the long term.
Why entrust your Gree heat pump to AirGreen?
At AirGreen, we install and maintain Gree wall-mounted heat pump systems throughout Greater Montreal. Our approach:
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Personalized analysis of your building (plex, condo, single-family home, rental property, etc.);
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Recommendation for correct sizing (BTU, number of units, location);
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Installation compliant with standards, with a clean and durable finish;
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After-sales service and maintenance to protect your investment.
Whether you are in Rosemont–La Petite-Patrie, Plateau, Laval, on the South Shore or the North Shore, we are here to help you better heat and cool your home with Gree solutions.