Clean, quiet and durable installation on red brick for four-season comfort in Laval
The residential context and comfort objectives
In Chomedey (Laval) , this red brick bungalow has a typical North Shore configuration: generous roof overhang, wall angle forming a recess, floor space to be preserved for circulation and snow removal. The owners are looking for a compact HVAC solution to cool in the summer and support heating in the off-season, with minimal visual impact and controlled consumption . We selected a new generation Gree wall-mounted heat pump with R-32 refrigerant , chosen for its seasonal efficiency , its silence and the local availability of parts.
Why a Gree wall-mounted heat pump (R-32)
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Energy efficiency : Gree's recent R-32 ranges (e.g. Vireo R32, Livo R32, Clivia R32, Airy R32, Sapphire R32 ) offer high SEER2/HSPF2 and reliable heating at low temperatures—an asset for Montreal–Laval–Longueuil winters.
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Acoustics : The compact condenser and modulated fan speeds limit sound propagation in Laval 's quiet residential neighborhoods.
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Compactness : one indoor unit is sufficient for the target living area; an upgrade to FreeMatch R32 multi-zone is still possible if other rooms need to be air-conditioned later.
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R-32 refrigerant : reduced charge, better heat transfer than R-410A, and more sustainable regulatory outlook.
Installation: precision, cleanliness and compliance
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Wall mount on galvanized brackets : we fix the condenser above the snow level and away from the ground to prevent corrosion and free up space. Anti-vibration pads limit structural transmission to the masonry.
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Corner positioning : The unit is placed in a recess formed by two brick walls. We carefully respect the suction/discharge clearances and orient the unit to avoid air recycling against the walls—key to air conditioning performance and to reduce defrost cycles in heating.
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Careful refrigeration path : rear outlet of the casing with continuous insulation and wide curvature radius to preserve the charge. Estimated total length: ~3 to 6 m , very favorable to efficiency.
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Compliant electricity : proximity disconnect switch installed within easy reach (visible on the wall), water drop wiring and UV sheath. Dedicated circuit breaker for the panel, clear circuit identification.
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Condensate management : priority gravity drain to the exterior with continuous slope; condensate pump only if the architecture requires it.
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Waterproofing : through drilling of the correct diameter, vapor barrier , interior/exterior sealing and flashings to guarantee air and water tightness .
Sizing: the right capacity, not random
The success of an HVAC installation is not only dependent on the brand: it depends on precise sizing . We carry out a thermal assessment taking into account:
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the surface area and ceiling height of the rooms,
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the orientation (solar gains) and the quality of the windows ,
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air infiltration and insulation ,
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internal costs (open kitchen, appliances, occupants).
On this house in Chomedey, the most relevant range is commonly between 9,000 and 18,000 BTU depending on the zone. An oversized power would cause short cycles (discomfort, noise, wear), while an undersized power would struggle during heat waves or spring thaw . Our final recommendation writes down in black and white the capacity , the operating range and the yields .
Airflow and noise management: thoughts for the neighborhood
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Direction of the blowing to direct the discharged air away from the facades and adjacent windows.
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Night mode and progressive power ramp : ideal in residential areas of Laval where tranquility is a purchasing criterion.
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Post-commissioning check : We measure current , superheat/subcooling , and listen to the unit under full load for any residual vibration.
Commissioning: AirGreen quality control
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Brazing under nitrogen and leak test (stabilized nitrogen pressure).
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Deep vacuum (≤ 500 microns) until stabilization.
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Electrical check : torque tightening, voltage drop test on startup.
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Functional measurements in cooling and heating: blowing temperature, room ∆T , compressor/fan intensity, consumption .
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User settings : schedules, Wi-Fi if available, filters and maintenance reminders.
Result for owners
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Immediate comfort in the living area, better controlled humidity during stormy episodes.
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Efficient supplemental heating from spring to fall, reducing the need for the main system.
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Controlled visual impact : the unit blends in with the red brick, the terrace remains free, access for maintenance is clear .
HVAC Maintenance: What Prolongs Performance
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Inner head filters : rinse every 4–8 weeks during use.
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Annual AirGreen maintenance : coil cleaning, connection check, load check , condensates, firmware update if planned.
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Winter : Clear the area under the unit of snow, clear grates and drain holes .
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Spring : gentle washing of the condenser (low pressure) and inspection of the capping .
Grants and Eligibility
In Montreal, Laval, Longueuil, North Shore and South Shore , several programs encourage the installation of efficient heat pumps , particularly R-32 models with high performance for heating in cold weather. After validation of the specific model (e.g. Vireo R32, Livo R32, Clivia R32, Sapphire R32 depending on the capacity selected), we confirm:
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the minimum SEER2/HSPF2 requirements,
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the negative operating range ,
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the required documentation (invoices, serial numbers, forms).
Our team supports customers to maximize assistance when the installation is eligible.
Best practices for a brick house in Laval
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Install on wall brackets to free the ground and avoid snow and standing water.
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Respect the clearances in the corners : this eliminates recirculation of hot air and maintains efficiency during heat waves.
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Proximity disconnector : essential for safety and rapid diagnostics.
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Short refrigerated lengths : aim for a direct, clean, hooded route to optimize efficiency.
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Plan for maintenance : safe access to the ladder, clearance around the unit.
AirGreen deadlines, guarantees and monitoring
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Technical visit and detailed quote quickly after contact.
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Standard HVAC installation : generally in one day for a single-head wall-mounted heat pump .
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Manufacturer's warranty on parts and AirGreen warranty on labor.
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Priority local after-sales service in season, with Gree parts available through our partners in the greater Montreal area.
Why choose AirGreen for your HVAC installation in Laval and Greater Montreal
We combine rigorous sizing , careful execution (straight capping, watertight drilling, clean finishes), and administrative support (verification of subsidies , guarantees). In Chomedey , Sainte-Dorothée , Fabreville , as well as in Montreal and Longueuil , we deliver durable, efficient and discreet installations —calibrated for your real comfort, and not just for the technical specifications.
Fast Fair
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Type : Gree wall-mounted heat pump ( R-32 ).
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Capacity : Typically 9,000–18,000 BTU depending on the area served.
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Advantages : high efficiency, low noise, possibility of multi-zone development.
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Maintenance : regular filters + annual inspection.
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Grants : possible depending on the model and performance; AirGreen verifies and provides support.
Planning a similar project in Laval or Greater Montreal ? Contact AirGreen : we evaluate, install , and maintain your wall-mounted heat pump with the same high standards as the one delivered here.