Two homes, one four-season solution: neat integration on a brick facade
At AirGreen , we modernize the comfort of Montreal plexes with HVAC solutions designed for the local climate. On this project in Saint-Léonard (Montreal) , we are installing two Sharp wall-mounted heat pumps (R-32 refrigerant) to serve two apartments in a brick building. The goal: reliable heating in winter and precise cooling in summer , without compromising the aesthetics of the facade or the peace and quiet of the occupants.
Customer context and site challenges
The building accommodates two families. The expectations are clear:
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stabilize interior comfort in living rooms and bedrooms;
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reduce operating costs in the face of rising electricity prices and more frequent heat waves;
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maintain a discreet and durable installation on brick masonry, with easy access for HVAC maintenance .
The site imposes several constraints typical of plexes: a narrow backyard, a low wall and fence limiting floor space, common passageways, and closely spaced windows. We therefore favor a wall-mounted installation on brackets —the safest solution for keeping the units clear of snow and impacts.
Why Sharp (R-32) for this Saint-Léonard duplex
The Sharp wall-mounted range with R-32 refrigerant is distinguished by high seasonal efficiency , reliable electronics and low noise levels . For stacked dwellings, this means:
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Four-season comfort with heating capacity maintained in cold weather (down to approx. −25°C depending on the capacities chosen);
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Energy efficiency that helps with bills and carbon footprint;
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Compact design fits well under windows;
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Eligibility, when the criteria are met (Energy Star, winter performance), for certain aid and subsidies in Quebec for heat pumps .
Please note: when the configuration and power selected allow it, we optimize the equipment selection to align real-life performance and eligibility for energy efficiency programs.
Visible details of the installation: robustness and cleanliness
On the rear facade, we mount two Sharp condensers on galvanized wall brackets with anti-vibration silent blocks. The units are aligned under the windows to shorten the feedthroughs and limit pressure losses.
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Refrigeration path : insulated copper connections, protected in a vertical brown capping , perfectly aligned with the woodwork.
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Clearance : sufficient clearance for air circulation, condensate drainage and maintenance.
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Power supply : exterior service boxes (disconnects) dedicated to each heat pump , grounded wiring, clean seals.
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Drainage : gravity drainage directed towards the exterior, sized to prevent any return of water during freezing/thawing periods.
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Winter protection : raising units to stay out of the snow drift zone, rear and side clearance respected.
The result is simplicity and efficiency : nothing protrudes, nothing vibrates, and each component remains accessible.
AirGreen Methodology: An HVAC Installation Designed to Last
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Technical survey of the building (brick thickness, lintels, anchoring zones) and identification of the shortest and safest openings.
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Installation of brackets with mechanical anchors suitable for masonry, laser level, anti-vibration pads.
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Controlled angle drilling to ensure drainage and preserve the integrity of the air barrier.
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Brazing and vacuum under micron-meter, nitrogen leak test.
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Electrical connection on dedicated circuits, checking the circuit breaker rating and marking on the panel.
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Commissioning : parameters, flow balancing, heating and cooling testing, explanation of best practices to the customer.
And inside?
Each unit receives its own wall-mounted unit positioned to cover the occupied areas continuously (open-plan living room/kitchen or through corridor). We favor:
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a height which limits air stratification and avoids facing partitions;
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side clearance for the blowing flap and filter maintenance;
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a short path towards the outside, to maintain excellent efficiency.
Results: immediate comfort, silence and control
When starting the engine, the occupants notice:
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responsiveness in heating mode despite temperature differences;
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uniform cooling of living areas during heat waves;
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a discreet noise level , both indoors and in the backyard — an asset in the urban density of Montreal .
We are following a consumption curve over the first few weeks: customers are confirming a significant drop in kWh compared to their previous backup solutions.
Good practices for HVAC use and maintenance
To maintain performance and longevity:
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Clean the wall head filters every 4 to 8 weeks during periods of heavy use;
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Keep 1 m clear in front of each outdoor unit;
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In winter, remove snow blown by the wind from the base of the condensers;
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Plan an annual maintenance : electrical inspection, pressures, blowing temperature, condensate pump test if present, verification of supports and capping.
AirGreen offers flexible maintenance plans covering Montreal, Laval, Longueuil, North Shore and South Shore .
AirGreen Technical Tips for Brick Plexiglas
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Avoid multiple drillings : one clean drilling per head with sealed bulkhead and controlled slope is sufficient;
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Favor wall installation rather than ground installation in narrow courtyards: better protection against snow, less risk of shocks;
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Think acoustic : silent blocks and correct tightening torque drastically reduce the transmission of vibrations;
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Planning for the future : space for a possible third interior head or a multi-zone if needs evolve;
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Uniform the shade of the hoods : brown capping harmonizes well with the typical red bricks of Saint-Léonard.
Grants and Compliance
Depending on the power and configuration chosen, Sharp R-32 heat pumps can meet the criteria of certain efficiency programs when certified and sized for heating in cold weather. We support our customers:
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in the eligibility check ,
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preparation of documents (detailed invoices, photos of the HVAC installation ),
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and submission to the relevant bodies.
Why AirGreen
Our commitment: impeccable installations , a selection of equipment adapted to the occupants' lifestyles, and after-sales service that keeps your system at peak performance. For any heat pump or wall-mounted air conditioner project in Greater Montreal, we deliver local expertise, proven on thousands of plexes, condos, and houses.