Installation of a Sharp Eco Inverter wall-mounted heat pump in Chomedey (Laval)
AirGreen installs a Sharp Eco Inverter wall-mounted heat pump in Chomedey (Laval): galvanized brackets above the patio, neat white capping, electrical disconnection, and professional commissioning. Your HVAC installation in Montreal, Laval, Longueuil, North Shore, and South Shore.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
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 carefully designed HVAC system, designed to last and operate quietly, even on the edge of a small patio
Project context and objectives
At AirGreen , we are working on a semi-detached property in Chomedey (Laval) . The owner wants to replace an energy-consuming portable air conditioner with a compact, efficient, and discreet wall-mounted heat pump . Priorities: year-round comfort, low noise, clean integration above a wooden patio, and HVAC installation that complies with the Quebec Electrical Code .
Device choice: Sharp Eco Inverter
We are choosing the Sharp Eco Inverter , a very high-efficiency inverter wall unit, renowned for its reliability and quiet operation. It offers:
-
fine modulation of the compressor to maintain a stable temperature with fewer cycles;
-
useful heating performance in cold weather;
-
robust electronics and overcurrent protection;
-
corrosion-resistant finish for the exterior of the greater Montreal area, Laval , Longueuil , North Shore and South Shore .
Practical note: Sharp's Plasmacluster logo, visible across the entire range, signifies a concern for air quality on the indoor unit side. We size the equipment according to the room and the building envelope to ensure an appropriate BTU , without oversizing.
Visible installation details and technical decisions
Outdoor installation. The condenser is mounted on the facade using galvanized brackets at a clear height, above the wooden decking. This choice prevents snow accumulation, frees up the flow of defrost water, and protects the unit from the movement of hot air trapped near the ground.
Clearances. We maintain the required front and side clearances for optimal airflow and easy maintenance.
Anti-vibration. Spacers and pads reduce the transmission of vibrations to the wall—unobtrusive indoors and outdoors, even during defrosting peaks.
Refrigeration path. The line set (refrigeration + communication cable) follows a white capping attached to the basement up to the drilling point. The short route limits pressure losses and simplifies the aesthetics around the patio.
Drilling and sealing. A single, small-diameter, lined drilling is made with a controlled slope. We seal the exterior with a UV-resistant polyurethane sealant to prevent any infiltration.
Condensate management. Gravity discharge to the outside for the indoor unit (not visible in the photo) with a continuous slope. The clearing under the outdoor unit ensures that defrost water flows away from the patio wood.
Electrical connection and compliance
In the immediate vicinity of the condenser, we install an outdoor disconnect box (waterproof cover) and draw a dedicated circuit from the main panel: double-pole breaker, conductor size in accordance with the machine's current rating, and conduits/wires rated for outdoor use. The assembly is tested and labeled according to AirGreen practices.
Pressurization, vacuum and commissioning
-
Nitrogen test to validate the watertightness of the copper network brazed with cadmium-free alloy.
-
Deep vacuum (≤ 500 microns) and stabilization; rise control to eliminate residual moisture.
-
Opening the device load , checking the suction/discharge temperatures and delta T in cold mode then in heat mode.
-
Setting up the nighttime silent mode and using tips for the owner.
Architectural integration around a patio
The space is tight between wooden steps, textured basement, and a small basement window. Our points of attention:
-
avoid direct airflow towards the seating area;
-
controlled height to stay above snow accumulations while maintaining maintenance accessibility;
-
free drainage of defrost water to protect the decking;
-
discreet routing of connections under white conduit covers matching the covering.
Result: comfort, silence and savings
The customer benefits from rapid cooling in summer and efficient supplemental heating during the off-season. Inverter modulation reduces electrical peaks and improves comfort. In use, we note:
-
reduced consumption compared to a portable air conditioner/convectors;
-
external noise controlled thanks to the installation and anti-vibration devices;
-
clean finish, easy to clean and inspect.
HVAC Maintenance: AirGreen Best Practices
-
Keep 1 m clear in front of the condenser, remove leaves and snow.
-
Clean the indoor unit filters every 4 to 8 weeks during peak season.
-
Gentle rinsing of the outdoor coil in spring.
-
Annual HVAC maintenance visit : check of currents, operating pressures, contactors, probes, tank and drainage.
-
In winter, maintain clearance on the ground and under the appliance for defrosting.
Pitfalls to avoid (feedback)
-
Ground slab in a snowy driveway : risk of burial and reduced performance — we favor wall supports when the structure allows it.
-
Too long a refrigeration path without need: pressure losses, unnecessary costs — the short and straight route of this project optimizes performance.
-
No disconnection within reach: non-compliant and risky for maintenance — the waterproof box placed here makes the intervention safe.
Grants & Funding
Several high-performance wall-mounted heat pumps are eligible for grants based on their performance (SEER2/HSPF2) and cold weather performance. We verify the eligibility of the selected Sharp configuration and prepare the files. Flexible financing options are available for Montreal , Laval , Longueuil , the North Shore and the South Shore .
Why AirGreen for your HVAC system?
-
Local team specializing in heat pump and HVAC maintenance in Greater Montreal.
-
Documented commissioning methodology (test, vacuum, measurements).
-
Clean finishes : matching cappings, durable sealing, galvanized supports.
-
Responsive after-sales service and tailored maintenance contracts.
Next step
Are you planning a wall-mounted heat pump installation in Montreal , Laval , Longueuil , on the North Shore or the South Shore ? We size your project, suggest the right BTU capacity, validate grants and deliver a clean installation at the first appointment.
Areas served : Montreal, Laval, Longueuil, North Shore, South Shore.
Services : HVAC installation , replacement, preventive maintenance, troubleshooting, energy optimization.
The big day, step by step
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.
What would it look like 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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
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?
No question matches. Write to us: we answer.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).