Installation of a Sharp wall-mounted heat pump in Ahuntsic-Cartierville
Professional installation of a Sharp wall-mounted heat pump in Ahuntsic-Cartierville. AirGreen, HVAC experts in Montreal, Laval, Longueuil, North Shore and South Shore.
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The article, chapter by chapter
A modern comfort solution for a Montreal condo
At AirGreen , we recently completed the installation of a Sharp wall-mounted heat pump in a condo in the Ahuntsic-Cartierville district of Montreal. The goal was to offer the client an energy-efficient, quiet and efficient solution, perfectly suited to the configuration of her urban home.
The chosen wall unit, from the Sharp ZU1 range, met the essential criteria: reliable heating performance down to low temperatures, air conditioning comfort in summer and discreet integration into a modern living space.
Project analysis and installation preparation
Before proceeding, our team conducted a comprehensive assessment of the condo's thermal needs , which covered approximately 900 sq. ft. Several factors guided our selection and planning:
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Exposure : the large bay window in the living room encouraged solar gain in summer, requiring suitable air conditioning capacity.
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Insulation : well-insulated walls reduced losses, allowing the sizing of the heat pump to be optimized.
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Accessibility : the wall installation had to be done on an interior wall directly overlooking a facade, which simplified the piping route and reduced the work.
These parameters determined that a 12,000 BTU unit was ideally suited to provide consistent comfort throughout the main space.
Key steps of installation
Fixing and strategic location
The indoor unit was mounted high on a central wall, promoting even air distribution throughout the living room and open-plan kitchen. The optimal height also allowed for more efficient operation in heating mode in winter.
Passage of conduits
We opted for a discreet piercing of the exterior facade , with a pipe route limited to approximately 2.5 meters. Everything was carefully covered with white capping in harmony with the aesthetics of the building.
Drainage management
A gravity drainage system was chosen, allowing condensation water to drain naturally, without requiring an additional pump.
Electrical connection
The proximity of the electrical panel facilitated the installation of a dedicated circuit breaker , ensuring safety and compliance with RBQ standards.
Results achieved and benefits for the customer
From the moment it was put into service, the difference was noticeable:
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Immediate comfort : a stable and pleasant temperature in all the main rooms.
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Remarkable silence : the Sharp unit is known for its low noise level, which is ideal in a condo setting.
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Energy savings : thanks to its high energy efficiency, the customer will benefit from a reduction in their electricity bill, particularly in mid-season heating mode.
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Grant eligibility : This Energy Star model allows you to benefit from financial assistance programs such as LogisVert and certain municipal subsidies, reducing the overall cost of the investment.
AirGreen Expertise: Much More Than an Installation
Each project carried out by our team showcases our expertise in residential HVAC in Greater Montreal. In Ahuntsic-Cartierville and elsewhere, we assist our clients from choosing the right unit to post-installation maintenance.
We particularly emphasize the importance of:
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Have the heat pump serviced annually to maintain its performance.
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Monitor the air filter and clean it regularly to maintain indoor air quality.
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Check the drainage and tightness of the connections, especially after winter.
With this proactive approach, the lifespan and performance of the equipment are optimized for several years.
A trusted partner for your comfort projects
This Sharp wall-mounted heat pump installation perfectly illustrates our commitment: to provide personalized, aesthetic and efficient solutions to improve the quality of life of our customers.
Whether you are in Montreal, Laval, Longueuil, on the North Shore or the South Shore , our team is ready to assist you in choosing, installing and maintaining your HVAC system.
AirGreen: your reference for installing wall-mounted heat pumps and HVAC systems in Greater Montreal.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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).