A suspended HVAC installation, designed for Montreal winters
At AirGreen , we prioritize robust, clean, and durable HVAC installations, adapted to the realities of Montreal's buildings. On this project in the Southwest , we are installing a Gree wall-mounted heat pump ( R32 single-zone system) whose outdoor condenser is attached to the brick wall on galvanized brackets . The client's objective is clear: to achieve four-season comfort while protecting the equipment from snow, shocks, and water splashes from the ground. The result is a raised, quiet, and easy-to-maintain installation, with a dedicated power supply and an optimized refrigeration path.
The Gree choice for a tight urban context
The Gree residential range offers fine inverter modulation, quiet operation and the use of R32 refrigerant, appreciated for its efficiency and lower load per kW. In a dense environment like the Southwest , these advantages are sought after:
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High seasonal efficiency : the machine precisely adjusts its power to actual needs, limiting cycles and consumption.
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Controlled noise level : beneficial for the occupant… and for the nearby neighbor.
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Simple maintenance : clear access to essential components, washable filters inside, and carefully designed exterior clearances.
Brick anchoring: stability and longevity
We fix the condenser to galvanized wall brackets with silent blocks under the side members. This approach:
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keeps the unit above the snow line and runoff;
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limits vibrations transmitted to the wall;
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clears ground clearance for snow removal and prevents ice buildup under the chassis.
The anchors are sized for solid brick and protected against infiltration: suitable dowels, sealing washers and external sealant. Precise level control ensures correct drainage during defrost cycles.
Air clearances and immediate environment
The front of the fan remains completely free on the front axis; the sides and the rear respect the manufacturer's minimum distances to avoid any air recycling . The presence of a nearby exhaust vent is taken into account: we direct the flow and choose the position of the device so as to avoid hot and humid discharges affecting the heat exchange.
Power supply: safety and accessibility
We install an outdoor disconnect switch within easy reach, compliant with the Quebec Electrical Code , connected by a UV-resistant conduit. The circuit is dedicated from the main panel, with appropriate rating and protection. This configuration facilitates service and secures any subsequent work.
Short and clean refrigeration route
The wall-to-wall connection is located behind the condenser to reduce line length and protect the insulation. Inside, the wall-mounted header is positioned to distribute air into the main living area; outside, the connections are covered from the outlet, protected from UV rays and impacts. The indoor unit's condensate drain is gravity- driven outwards, with a constant slope and discreet outlet.
Meticulous commissioning
Our technicians carry out commissioning in five stages:
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Deep vacuum , vacuum stability control.
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Checking leaks/pressure , mechanical and electrical tightening.
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Performance measurements : blown temperatures, intensity, inverter reaction.
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Comfort settings: auto speed, auto restart, shutter memorization.
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Customer discount : operating instructions, HVAC maintenance schedule, seasonal advice.
Concrete result for the occupier
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Efficient heating in mid-season and on moderately cold days, relieving the strain on electric baseboards.
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Uniform air conditioning in summer, with humidity management that allows for reasonable settings.
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Silence and energy sobriety , thanks to continuous modulation.
Results, savings and best practices
What we have specifically taken care of here
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Raised height on brackets: clearance under the appliance for melting frost, protection against packed snow and splashes.
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Air clearances respected despite an urban context: no obstacle in front of the fan, clear around the sides.
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Controlled vibrations : silent blocks, distributed anchoring, controlled tightening torque.
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Well-positioned external disconnect switch : safe and accessible.
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Short refrigeration path : minimized losses, preserved aesthetics.
Tips for using a heat pump in a house or apartment complex
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Stable setpoint : leaving the inverter working continuously avoids overconsumption.
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For heating, turn the shutter slightly downwards ; for air conditioning, use a wide sweep to even out the temperature.
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Filters : Rinse every 4–8 weeks depending on dust and animals.
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Exterior clearance : keep the underside free of snow/ice, do not store objects in front of the grille.
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Defrosting : It is normal to hear the appliance changing speed in cold, humid weather; avoid turning off/restarting during these phases.
HVAC Maintenance: Maintaining Performance Year After Year
We offer HVAC maintenance visits in Montreal , Laval , Longueuil , on the North Shore and the South Shore :
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Thorough cleaning of the evaporator and indoor head fan , gentle disinfection.
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Checking the gravity drain (slope, obstructions) and the exit point.
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Condenser inspection: fins, supports, tightening, condition of covers and routing.
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Electrical controls and sensors, updating optimization parameters.
Annual maintenance stabilizes seasonal performance and extends component life.
Grants: when and how to benefit from them
High-efficiency wall-mounted heat pumps may be eligible for assistance programs when their low-temperature heating performance meets current standards. We guide our clients through the eligibility analysis, file preparation (technical data sheet, certifications), and work planning process to maximize return on investment.
Common mistakes… that we avoid
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Mounting a condenser too close to the ground , exposed to snow or ice;
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Undersize or oversize the power;
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Neglecting the slope of the condensate drain or the sealing of the drilling;
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Install without an accessible disconnect switch or with insufficient air clearances;
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Leave visible connections without UV protection .
Why AirGreen in the Southwest and throughout Greater Montreal
Our strength lies in the combination of three requirements: serious sizing , impeccable finish and responsive local service . We intervene every week in Montreal , Laval , Longueuil , on the North Shore and the South Shore for heat pump or wall-mounted air conditioner projects, whether for century-old brick homes, renovated plexes or recent condominiums.
In summary
This HVAC installation of a Gree wall-mounted heat pump on brackets in the Southwest offers an economical , quiet , and weather-protected system. The respected clearances, dedicated power supply, and rigorous commissioning result in immediate comfort and controlled operating costs—exactly what urban homeowners are looking for.