In Rosemont–La Petite-Patrie, the typical Montreal brick plexes have to contend with harsh winters, increasingly hot summers… and often limited technical spaces. In this project, our AirGreen team was tasked with replacing an aging heating system with a Midea central heat pump , providing the client with year-round comfort while reducing their energy bills.
A brick plex in the heart of Rosemont
The building is a typical brick structure for the area, with a concrete base and a narrow side passage. As is often the case in these configurations, floor space is limited: it's used for pedestrian traffic, recycling bins are sometimes stored there, and in winter, snow can quickly accumulate against the walls.
Our challenge:
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find a safe outdoor location for the condenser,
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respect the necessary clearance around the unit.
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to limit vibrations and noise for the occupants… and for the neighbors.
Choosing a Midea EVOX G3 central heat pump
For this project, we recommended the installation of a Midea EVOX G3 central heat pump , a modern system operating with a new generation refrigerant with low global warming potential (R-454B).
This type of heat pump is ideal for a Rosemont duplex:
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It connects to an existing (or newly installed) duct network , allowing hot and cooled air to be distributed throughout all rooms.
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Midea's inverter technology continuously adapts the compressor's power to the actual demand, improving comfort and reducing electricity consumption.
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It is designed to perform well in winter , under the sub-zero temperatures typical of Montreal, while remaining effective in summer for air conditioning.
The result: a single, compact and efficient system that advantageously replaces an electric or gas furnace + a separate air conditioner.
A neat, elevated outdoor installation
The photo clearly shows the Midea condenser attached to the brick facade, just above the concrete foundation. Several technical choices were made to guarantee the durability and performance of the installation:
Elevated wall mount
We opted for a galvanized steel wall bracket , securely anchored to the foundation. This approach offers several advantages:
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Protection against snow and ice : by raising the unit, it is prevented from being buried in a snowdrift or coming into direct contact with slush.
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Improved drainage : meltwater and rainwater drain freely under the unit.
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Ease of maintenance : the clearance under the condenser allows the technician to easily intervene for inspections and seasonal maintenance.
Positioning on a brick wall
The condenser is installed along the side passage, on a sturdy brick wall , with sufficient clearance at the rear and sides. This allows:
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optimal air circulation for heat exchange,
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a reduction in noise perceived from the main windows
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discreet integration into the existing architecture.
Vibration and noise management
The mounting brackets are equipped with anti-vibration elements , which reduces the transmission of vibrations into the masonry. Combined with the Midea fan's profiled blade design and variable-speed compressor, operation remains very quiet , day and night.
Protected refrigeration and electrical connections
On the right side of the unit, the electrical box and the refrigeration connections protected by a black insulating sheath can be seen.
Our AirGreen best practices:
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Use of high-quality copper refrigeration piping , brazed according to best practices and subjected to a rigorous pressure test before commissioning.
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UV-resistant exterior insulation to protect the refrigerant line and maximize system efficiency.
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Electrical disconnect box near the unit, compliant with code, to ensure optimal safety during service interventions.
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Careful management of condensate drainage to prevent water accumulation against the foundation.
Even in the rain – as can be clearly seen in the photo, with the droplets on the casing – the device is designed to operate safely: the protected steel cabinet and internal components are designed to withstand Quebec weather conditions.
Integration into the central heating system
Inside, the Midea EVOX G3 heat pump is coupled with a central air management system connected to the existing ventilation ducts. This configuration offers several advantages:
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Uniform heat distribution throughout the entire dwelling, from the living room to the bedrooms.
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Central air conditioning function in summer, without visible wall units in the rooms.
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It is possible to integrate high-efficiency filters , or even a media filter or purifier, to improve indoor air quality.
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Simplified control via a modern wall thermostat (and, if needed, smart / Wi-Fi).
For customers switching from a gas or oil furnace to a central electric heat pump, the benefit is twofold: reduced emissions and lower energy costs , especially with a high-efficiency unit like Midea.
Performance in Montreal's winter
Rosemont winters are unforgiving. That's why we configure every Midea central heat pump with:
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an optimized defrosting process that limits unnecessary cycles and maintains good heating capacity in cold weather;
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temperature curves adapted to get the most out of the heat pump before resorting to an electric backup, if present;
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precise sizing, based on the calculation of the building's thermal load , to avoid undersized devices (which run constantly) or oversized ones (less comfortable and less efficient).
The client thus benefits from a comfortable and stable home, without large temperature variations, even during the cold spells felt in Montreal.
A turnkey project by AirGreen
As with all our projects, our mandate in Rosemont–La Petite-Patrie is not limited to simply installing a device:
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Analysis of client needs and building condition.
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Recommendation of the right Midea heat pump (capacity, configuration, options).
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Complete installation: outdoor condenser, air manager, additional ducts as needed, electricity, refrigerant connections.
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Detailed commissioning : checking pressures, air flow, electrical currents, thermostat configuration.
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Explanations to the customer on optimal use, minimum maintenance to be done and recommended preventive maintenance visits .
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Support for applicable grant programs , where relevant.
Our goal: that every customer feels supported from the first call until the first full winter with their new Midea central heat pump.
Do you live in Rosemont or elsewhere in Greater Montreal?
Whether you own a brick plex like this one, a condo, or a single-family home, a Midea central heat pump can transform your comfort while reducing your energy costs.
We travel throughout Greater Montreal: Rosemont–La Petite-Patrie, Plateau-Mont-Royal, Villeray, Laval, South Shore, North Shore and more.
Contact us and we will take the time to assess your project, advise you on the right Midea model and offer you a careful, durable installation designed for our climate.