Installation of a Sharp Eco Inverter wall-mounted heat pump in Sainte-Dorothée (Laval)
AirGreen installs a Sharp Eco Inverter wall-mounted heat pump in Sainte-Dorothée (Laval) : wall bracket, gravity drain, careful finishing and HVAC maintenance. Fast intervention in Greater Montreal: Montreal, Laval, Longueuil, North Shore, South Shore .
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
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 .
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
Which type of equipment for your project?
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What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).