Installation of a Sharp wall-mounted heat pump in Chomedey (Laval)
AirGreen installs a Sharp wall-mounted heat pump in a condo in Chomedey (Laval) : short wall cross-section, gravity drain, discreet cover, and optimized performance. HVAC experts 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.
Carefully integrated into a modern condo: uncompromising four-season comfort
In a condo in Chomedey (Laval) , our team installed a Sharp wall-mounted heat pump to provide heating and cooling for an open living area (living room + dining area). The project is taking place on an upper floor, with patio doors opening onto a balcony and load-bearing gypsum walls already housing some technical reservations. The client's objective is clear: to obtain stable comfort all year round , reduce energy costs and preserve impeccable aesthetics inside and out.
Project context and choice of location
The chosen wall is located above the main opening of the living room. This position meets three essential criteria:
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Uniform diffusion : overlooking the passage area, the interior head blows freely towards the main volume without being hindered by partition returns.
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Short paths : the immediate proximity of the balcony allows a direct wall crossing to the outside for the refrigeration connections and the condensate drain, limiting pressure losses and optimizing efficiency.
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Easy maintenance : the installation height (≈ 2.3–2.4 m ) leaves comfortable clearance for annual maintenance ( HVAC maintenance ).
We prepared precise reservations in the gypsum: a technical niche for the fittings and the passage of the line, a housing for the mounting plate and a main drilling (≈ 2-3 in) made with an outward slope for gravity drainage.
The Sharp indoor unit: efficiency, silence and finish
The Sharp wall-mounted head attracts attention with its sleek design and motorized shutter ensuring even air distribution. Comfort:
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Inverter technology to modulate power according to actual demand.
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High-efficiency filtration to reduce dust and allergens in the living room.
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Low noise level in steady state, essential in a condo where sound reverberation can be noticeable.
Sharp offers this range in typical capacities from 9,000 to 24,000 BTU/h . In open-plan rooms like this, we generally prefer 12,000 to 15,000 BTU/h , subject to thermal load calculations (insulation, orientation, fenestration, airtightness). The precise adjustment of the capacity guarantees dehumidification in summer and efficient heating during the mid-seasons.
Installation details: clean, protected and durable
Route of the connections
From the head, the insulated refrigerant pipes (gas/liquid) and the communication cable take a very short route to the exterior wall (≈ 1.5 to 2.5 m in total). The connections are crimped, brazed if necessary and tested under nitrogen before being vacuum-packed.
Condensate drain
The gravity drain follows the same path as the connections, with a continuous slope towards the outside. This choice eliminates the need for a condensate pump, reduces potential noise and reduces maintenance .
Finishing and covering
On the outside, the connections are covered in discreet UV casing , matching the facade. Inside, we close and clean up : plate, joints, and sandblasting for a finish ready for painting. The client thus benefits from a virtually invisible integration of technical elements.
Testing and quality control
After deep vacuuming and leak testing , we measure the supply/return temperatures , check the pressures and adjust the settings (sweeping, speed, setpoint). Everything is documented on the intervention sheet, which is useful for monitoring annual HVAC maintenance .
Exterior and power supply: safety and compliance
Although the photo focuses on the interior, the complete installation includes:
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A Sharp condenser placed on anti-vibration supports with clearances suitable for suction and blowing.
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An external disconnect switch near the condenser, supplied by a dedicated circuit from the electrical panel (two-pole circuit breaker, sized according to capacity).
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Strict management of the difference in level between the indoor unit and the condenser in order to respect the length/height limits prescribed by the manufacturer.
The whole is carried out under RBQ license , taking into account Quebec electrical standards and good HVAC practices in multi-residential environments.
Energy performance and program eligibility
The Sharp wall-mounted heat pump, in the R-32 refrigerant version, aims for a high efficiency rate (SEER/HSPF) and heat retention in sustained cold . In Greater Montreal, this equipment is fully part of a strategy to reduce energy bills in the face of advantageously priced electricity.
Grants and programs
When the configuration (capacity, certified performance, approval) meets the criteria, this type of heat pump may be eligible for various energy transition assistance programs. Our team supports customers in verifying eligibility and preparing documents .
Challenges encountered and AirGreen solutions
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Proximity to carpentry
The head is installed between a patio door and a window . We adjusted the wall plate to the millimeter to maintain lateral clearances and prevent air from flowing back against the embrasures. -
Technical walls already drilled
Several pre-existing renovation openings were visible. We restructured the niche , streamlined the passage of the connections and secured the mounting plate to the uprights to prevent any vibration . -
High-rise condo
The work is carried out on the upper floor: safe management of the facade crossings , protection of the coatings and minimization of interventions on the co-ownership . We coordinate the logistics in order to limit the intervention time in the common areas.
Result: immediate comfort, preserved aesthetics
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Stable comfort 12 months/12 : efficient heating in spring/autumn and gentle air conditioning in summer.
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Silence : very discreet low mode, ideal for condo life.
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Clean aesthetics : no visible interior chute, discreet exterior cover .
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Efficiency : short journeys = optimized performance and lower consumption .
Tips for use and maintenance to maximize lifespan
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Filters : clean every 4 to 8 weeks during the usage season.
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Clearances : Do not install a tablet directly in front of the head; leave a free space for scanning.
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Instructions : aim for reasonable differences (20–23°C summer; 21–23°C winter) to promote Inverter modulation.
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Annual HVAC maintenance : condensate inspection, tightening of connections , checking of settings and deep cleaning of the evaporator and condenser.
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Winter : Keep the condenser clear of snow and ice.
Why AirGreen for your HVAC installation in Montreal and surrounding areas?
AirGreen operates throughout Greater Montreal — Montreal , Laval , Longueuil , North Shore and South Shore — with teams specialized in installing wall-mounted heat pumps from Sharp, Gree, Fujitsu, Midea and other recognized brands. Our promise:
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Careful sizing and honest advice.
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Careful finishing , even in demanding contexts (condos, plexes, flat roofs).
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Responsive after-sales service : maintenance, diagnostics, optimization.
Considering a heat pump or wall-mounted air conditioner for a similar condo in Chomedey? We offer a consultation and a transparent quote , with equipment options tailored to your budget and real-world needs.
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.
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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).