Installation of a Sharp wall-mounted heat pump in Rosemont
AirGreen installs a Sharp wall-mounted heat pump in Rosemont. An HVAC project optimized for the limited space of a Montreal duplex, offering comfort, energy savings, and subsidies.
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 discreet and efficient HVAC solution for a Montreal duplex
At AirGreen , we regularly work in typical Montreal buildings where space is limited and every detail counts. In this project in the Rosemont district, we installed a Sharp wall-mounted heat pump , perfectly suited to the constraints of an urban duplex with a narrow entrance and a bright stairwell.
Project background
The client wanted to modernize their heating and air conditioning system to improve the comfort of their home while taking advantage of the subsidies available in Quebec . The main challenge was the limited space near the entrance: the indoor unit had to be integrated high up, without hindering traffic flow or aesthetics.
Choice of equipment: Sharp, a guarantee of reliability
The Sharp wall-mounted heat pump is one of the most popular models for its reliability and performance in cold climates. Capable of operating efficiently down to -25°C, it perfectly meets the needs of Montreal homes. Its inverter technology helps maintain a stable temperature while reducing energy consumption.
Among the advantages:
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High energy efficiency with excellent SEER2/HSPF2.
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Quiet operation , ideal for apartments.
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Compact and modern design , discreet in a narrow corridor.
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Compatibility with provincial and federal grant programs .
Installation process
Our technicians began by attaching the wall-mounted fan head above the front door. This strategic positioning allows for even air distribution while freeing up floor space. The installation height required the use of a professional stepladder and precision tools to ensure perfect alignment.
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Discreet drilling of the exterior wall for the passage of refrigeration connections.
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Wiring and piping routed neatly along the wall with matching white capping.
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Gravity connection of the condensate drain , thus avoiding the addition of a pump and simplifying future maintenance.
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Complete commissioning tests : leak-tightness of connections, vacuum, pressure verification and electronic calibration.
Technical constraints and solutions
The main challenge was the very limited space in the entrance. Our installers chose a high-mounted installation to avoid any obstruction of the door and optimize air circulation. In addition, special care was taken to route the pipes so that they remained invisible from the main room.
Result and benefits for the customer
The customer now benefits from:
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Increased comfort in summer and winter , with a stable temperature in all seasons.
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Reduced energy bills , thanks to better efficiency compared to its old system.
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With a successful aesthetic integration , the wall unit blends perfectly into the decor.
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Peace of mind , with the AirGreen guarantee and Sharp reliability.
Why choose AirGreen in Montreal, Laval, Longueuil, North Shore and South Shore?
Our expertise in wall-mounted heat pump installation allows us to handle the most complex projects, even in confined urban environments. Whether for a duplex in Rosemont, a house in Laval, or a condo in Brossard, we always adapt our solutions to our clients' specific needs.
By choosing AirGreen, you benefit from:
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From an RBQ certified and experienced team .
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Comprehensive support in grant applications.
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Optimized installations to maximize sustainability and energy efficiency .
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).