A clean, quiet installation designed for our winters — by AirGreen
Single-family brick home in Sainte-Dorothée (Laval) : the client wanted to improve summer comfort without sacrificing off-season heating efficiency. Our recommendation: a Sharp Eco Inverter wall-mounted heat pump , a compact and reliable solution for an open-plan living area on the ground floor, with extended comfort to the bedrooms upstairs thanks to good air circulation.
What this solution brings
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4-season comfort : precise cooling in summer and efficient heating in spring/autumn.
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Inverter technology : fine modulation to reduce on/off cycles and significant energy savings .
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Air treatment with Plasmacluster Ion (Sharp) to limit dust and allergens.
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Low noise level indoors and outdoors — ideal for quiet residential areas of Laval , North Shore and South Shore .
Technical installation details (ground & execution)
Raised wall support: best practice for Quebec
We chose a wall bracket made of galvanized brackets anchored in the masonry. This configuration:
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Keeps the condenser above the level of snow and water splashes;
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Reduces vibrations thanks to anti-vibration pads placed under the legs;
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Facilitates maintenance around landscaping.
The unit is positioned approximately 45–55 cm from the ground and clear of plantings to maintain air circulation . The rear and side spacing meets the manufacturer's recommendations for flow rate and service accessibility.
Drilling and refrigeration route
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Single hole through the brick and insulation, made with a vapor barrier and elastomer sealing for perfect watertightness.
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Refrigeration lines (liquid + gas) insulated and protected.
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Estimated length between indoor unit and condenser: 3 to 5 m , direct route through the living room wall; this limits pressure losses and optimizes performance.
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Communication and power cabling run in the same technical duct, with service loop for future maintenance.
Condensate management
The gravity drain exits at the bottom of the wall and discharges into the mulch bed, with a continuous slope. A heating cable is provided as an option for winter if the customer wishes to maintain a dehumidification mode in cold weather, but here the need is seasonal and the usage profile remains summer.
Protection and finishing
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Beige technical sheath/cover matching the brick for aesthetic integration .
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External disconnect (service switch) installed in the regulatory vicinity of the condenser.
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Serpentine treated to resist corrosion; stainless steel screws and anchors suitable for brick to prevent surface rust over the years.
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AirGreen labeling to simplify after-sales service.
Commissioning and controls
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Deep vacuum down to <500 microns, nitrogen leak tested.
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Refrigerant weighing in accordance with manufacturer specifications (factory charge + top-up if necessary depending on length).
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Checking intensity/voltage , subcooling/superheat , and supply/return temperatures at the wall head.
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Sharp thermostat/control settings (modes, eco, timer, auto restart after power off).
Why Sharp for this project?
The Sharp Eco Inverter range is distinguished by:
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Proven reliability and simple HVAC maintenance (accessible filters, clear diagnosis).
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The Plasmacluster function to improve indoor air quality.
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Wide modulation that maintains temperature stability without jolts.
For projects requiring extreme cold performance (-25°C and above), we also offer other recent wall-mounted series in R-32/R-454B (Sharp, Gree, Fujitsu, Midea) - perfectly suited to current aid programs. Our team always guides the choice towards the best match between budget, comfort, acoustics and eligibility for subsidies .
Result at the customer's premises in Sainte-Dorothée
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Drop in indoor temperature felt from the first hour, even during periods of direct sunlight.
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Controlled exterior acoustics : immediate neighbors hardly hear the unit at idle.
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Careful aesthetics : compact condenser, discreet duct, preserved plantings.
Best practices selected (AirGreen checklist)
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Clearances respected around the condenser for optimal air flow .
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Elevation on brackets to avoid snow and facilitate snow removal.
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Gravity drain with continuous slope and discharge point managed to avoid staining the masonry.
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Waterproof sealing of the drilling to eliminate air/water infiltration and thermal bridges.
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Complete electrical and refrigeration checks before handover.
Recommended HVAC maintenance
To maintain efficiency and silence:
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Cleaning of internal filters every 1 to 3 months during peak season.
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Gentle rinse of the external battery in the spring (low pressure jet, never at an aggressive angle).
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Clearance of at least 60 cm around the condenser (cut back perennials).
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Annual inspection by AirGreen: electrical checks, tightening, refrigeration parameters, deep cleaning of the evaporator and turbine.
Subsidies and energy efficiency
High-performance, certified wall-mounted heat pumps (depending on the model) may be eligible for incentives in Quebec through provincial and municipal programs. Our team verifies the compatibility of the chosen model, prepares the documents and supports the client to maximize the possible assistance in Montreal , Laval , Longueuil , on the North Shore and the South Shore .
What AirGreen brings more
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Precise on-site diagnosis : orientation of rooms, sunlight, architectural constraints (brick, lintels, windows).
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Clear installation plan : route, drilling, condensate management, choice of support.
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Meticulous execution and respect for deadlines.
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Responsive after-sales service and parts available through our local networks.
Next step
Are you considering a similar HVAC installation in Sainte-Dorothée , Chomedey , or Fabreville ? We evaluate your home, size the most suitable wall-mounted heat pump (Sharp, Gree, Fujitsu, Midea, etc.), and deliver a clean, durable, and aesthetically pleasing installation—ready for both hot summers and cool mid-seasons.
Keywords worked on : wall-mounted heat pump , HVAC installation , Sharp , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore .