Four-season comfort, clean and thoughtful installation: our AirGreen signature in Chomedey
Project context and client expectations
At AirGreen , we are working in Laval for a homeowner who wants to stabilize the temperature of his ground floor and basement, reduce his electricity costs and benefit from a system that is easy to maintain. The house, typical of the Chomedey sector, has stone cladding with a plastered basement and a basement window on the driveway side. We recommend a Gree wall-mounted heat pump (recent R32 range) , capable of providing excellent cooling performance in the summer and efficient supplemental heating at low temperatures.
Why the Gree (R32) solution is suitable here
-
Modern energy efficiency : The latest generation of Gree systems with R-32 refrigerant boasts excellent seasonal efficiency and reduced fluid load—a plus for the environment and your bill.
-
Installation flexibility : the compact and quiet outdoor units can be easily integrated into the side facade, even with window, footprint or passageway constraints.
-
Targeted comfort : in the wall-mounted version, diffusion is rapid and uniform for open areas on the ground floor, with precise humidity control in wall-mounted air conditioner mode.
Our HVAC installation methodology on this house in Chomedey
Location of the outdoor unit: performance and discretion
We fix the Gree condenser on galvanized wall brackets above the finished floor. This choice:
-
preserves snow clearance and ventilation,
-
limits vibrations transmitted to the facing,
-
ensures free evacuation of condensates.
The unit is positioned off-axis from the basement window to maintain natural light and emergency access. The height under the unit also facilitates annual maintenance ( HVAC maintenance ).
Refrigeration line routing: clean, short and protected
To ensure aesthetics and durability, we cover the connections with white UV ducting :
-
Vertical rise from the outdoor unit,
-
Discreet horizontal offset to reach the most logical interior drilling point.
The total visible length is around 4 to 5 meters , ideal for limiting pressure losses and maintaining excellent performance. The bending radii are respected and the liquid/gas line insulation is continuous up to the flare fittings.
Condensate management: gravity-fed and hassle-free
Condenser drainage is gravity- fed, with a dedicated tube that drops cleanly. Internally, the wall-mounted header is also configured for gravity drainage to the outside, avoiding the need for a lift pump, which often requires additional maintenance. This approach reduces noise and simplifies maintenance.
Power supply and compliance
We install an outdoor disconnect box near the unit, securely attached to the base and connected by a protected cable. The circuit is sized according to the model's current rating and the recommended circuit breaker size, all in accordance with the Canadian Electrical Code and good HVAC practices in Quebec.
Technical details and best practices that make the difference
Controlled drilling and sealing
The through-hole is sloped outwards , sleeved and sealed to prevent any air or water infiltration. We take care with the alignment for a perfectly flat chute outlet - no more unnecessary curves that strain the lines.
Anti-vibration and silence
Anti-vibration pads on the brackets limit noise transmission to the wall. The Gree condenser fan, known for its good balance, contributes to a discreet noise level in the side alley, a point appreciated by the neighbors.
Rigorous commissioning
-
Deep vacuum with micronmeter to ensure a dry circuit,
-
Checking for leaks and tightening to the prescribed torques,
-
Validation of suction/discharge temperatures and delta T in cold and hot mode,
-
Setting comfort functions (sweeping, auto restart, eco settings).
Result: immediate comfort and controlled bill
Upon startup, the heat pump quickly lowers the temperature and humidity on the ground floor. During the off-season and in moderate cold, the heating mode effectively supports the main furnace, reducing the load on the electric heaters and improving overall efficiency. The client benefits from precise room-by-room control, simple HVAC maintenance , and a visually pleasing exterior.
AirGreen Tips for Maximum Longevity
Implementation and clearances
-
Maintain 45 to 60 cm behind and on the sides for good air intake.
-
Clear snow in winter to prevent the fins from clogging and to preserve defrosting.
Annual interview
-
Clean the wall head filters every 4–8 weeks during heavy use.
-
Annual inspection : static pressure, heat exchange, electrical tightening, condition of supports and chute. Our technicians cover Montreal , Laval , Longueuil , North Shore and South Shore .
Wise use
-
During heatwaves, aim for a realistic setting (22–24°C) to limit short cycles.
-
For heating, take advantage of eco ranges and lock in a stable setting to avoid overconsumption.
Grants and Eligibility: What You Need to Know
Gree R-32 generation wall-mounted heat pumps are often eligible for provincial programs based on capacity and low-temperature performance (extreme cold-rated models, Energy Star, specific HSPF/SEER thresholds). We systematically validate:
-
the heating operating range (up to −25/−30 °C depending on the series),
-
the model and approval numbers required by the programs in force,
-
the documentation to be provided for the application.
Our team supports clients in Greater Montreal — including Laval , Longueuil , North Shore and South Shore — to maximize available assistance and speed up file processing.
Common pitfalls avoided on this site
Poorly placed chutes and holes
An outlet that is too low in relation to the internal head results in condensate siphons and excessive curvatures. Here, the vertical + horizontal path at the correct level guarantees free drainage and a clean appearance on the facade.
Undersizing of supports
The brackets are calibrated for the mass of the condenser, with a safety margin and dowels adapted to the cladding. This prevents sagging over the seasons.
Forgotten UV protection and waterproofing
All lines are capped and crossing points sealed to preserve insulation, structure and long-term aesthetics.
Why choose AirGreen for your HVAC installation in Laval
-
Local expertise : our teams know the specific features of Laval homes (narrow driveways, basement windows, snow clearances).
-
Quality of execution : measured vacuum draw, compliant tightening torques, straight and clean finishes.
-
Complete support : selection of the right wall-mounted air conditioner/heat pump , compliant installation, HVAC maintenance and grant procedures.
Next step
Are you in Laval , Montreal , Longueuil , on the North Shore or the South Shore and are you considering an R-32 wall-mounted heat pump to improve comfort and efficiency? We evaluate your home, confirm program eligibility, and offer a careful, durable and aesthetic installation.
Quick facts about the installation in Chomedey
-
Type : Gree wall-mounted heat pump , recent R-32 range
-
Exterior installation : on wall brackets above the ground
-
Path : white UV chute , vertical + horizontal, ~4–5 m
-
Condensates : gravity drainage
-
Electricity : outdoor disconnect box , protected wiring
-
Customer objectives : 4-season comfort, controlled cost, careful aesthetics
About AirGreen
HVAC company based in Montreal , we serve all of Greater Montreal, including Laval , Longueuil , the North Shore and the South Shore . Our promise: honest advice, impeccable installation and proactive follow-up year after year.