In a typical brick duplex in Mercier–Hochelaga-Maisonneuve , a homeowner wanted to modernize their comfort without altering the building's rear facade. Our mission: to install a high-performance Gree wall-mounted heat pump while neatly integrating the refrigerant and electrical lines into a brick wall that was highly visible from the courtyard.
Context: a Montreal duplex, a facade to be respected
The house is a multi-story brick building with stone-framed windows, typical of the residential streets of MHM. The backyard is used daily: access to parking, relaxation area, and access to the balconies.
The client had three priorities:
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Replace window air conditioning with a quiet and efficient solution;
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Reduce your electric heating bill in winter with a heat pump;
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Preserve the aesthetics of the brick facade , without any exposed makeshift conduits or dangling cables.
It is in this context that we proposed a Gree Inverter wall-mounted heat pump , with careful work on the routing of the refrigerant lines.
The solution: a Gree Inverter R-32 wall-mounted heat pump
We installed a new generation Gree wall-mounted heat pump , operating with R-32 refrigerant . This type of mini-split system is perfectly suited to Montreal's multi-unit dwellings.
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Efficient heating even at very low temperatures, which greatly reduces the need for electric baseboard heaters;
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Gentle and stable air conditioning in summer, without icy drafts;
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Inverter technology : the compressor continuously adjusts its speed, which improves comfort while reducing energy consumption;
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Reduced noise level , both inside and outside, is important in a dense area where buildings are close together.
Inside, a Gree wall unit serves the main room, with precise control of temperature, airflow and modes (heating, cooling, dehumidification, ventilation).
A careful integration into a brick facade
The photo shows the Gree outdoor unit positioned under a window, against the brick wall. The striking feature of this project is the clad metal structure that visually frames the window and extends up to the upper floor.
This structure plays a dual role:
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Aesthetic
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It creates a visual frame that harmonizes with the brick facade.
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It allows refrigeration lines, cables and possibly electrical wiring to be concealed or guided inside a uniform metal casing, rather than having several separate plastic covers.
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Technical
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The conduits are protected from impacts, sun and weather.
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The route is straight, which limits tight bends and therefore pressure losses in the refrigerant lines.
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Accessibility for maintenance remains excellent: simply remove the casing to inspect or intervene.
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The outdoor unit is installed at a height that meets Gree's clearance requirements , while remaining accessible to our technicians. It has a clear space in front of the fan to allow for good air circulation.
Four-season comfort in an urban neighborhood
Thanks to this installation, the owner now benefits from:
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of more economical heating for a large part of the winter, even when temperatures drop well below zero;
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efficient and quiet air conditioning during heat waves;
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better control of indoor humidity , which is very welcome during heat waves or rainy days;
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a significant reduction in noise and size compared to older window air conditioners.
For the occupants of the dwelling and their immediate neighbors, this is a concrete gain in terms of comfort and quality of life.
A project designed to last over time
As with all our installations, we have paid particular attention to sustainability :
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sealing and drilling carried out with products adapted to brick and our climate;
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support and fixings sized to withstand freeze/thaw cycles and vibrations;
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condensate drainage management to prevent water runoff along the facade;
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electrical compatibility check (dedicated circuit breaker, wiring gauge, external protection).
We then proceeded to evacuate the circuit , charge it appropriately with refrigerant (depending on the line lengths) and perform operational tests in heating and cooling modes, to ensure that the Gree heat pump delivers its full performance from day one.
AirGreen, your Gree heat pump installer in Mercier–Hochelaga-Maisonneuve
This project perfectly illustrates our way of working in Mercier–Hochelaga-Maisonneuve and throughout Montreal :
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understand the architectural reality of the building (brick plex, windows, balconies, narrow courtyards);
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to offer a Gree wall-mounted heat pump adapted to the actual needs of the dwelling;
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integrate the conduits in a clean and sustainable manner, without compromising aesthetics;
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to provide a turnkey service, from design to commissioning, and then to maintenance.
If you live in a brick plex and would also like to switch to a Gree wall-mounted heat pump , we can assess the best way to integrate the outdoor unit on your facade, on the ground, on a console or on an elevated structure, respecting the standards and style of your building.