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Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie

Discover how AirGreen installed a Sharp wall-mounted heat pump in a Rosemont–La Petite-Patrie apartment, optimizing four-season comfort while respecting space constraints and interior aesthetics.

By AirGreen Climatisation & Chauffage Admin5 min read
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Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie
Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie
The full story

The article, chapter by chapter

In this project in Rosemont–La Petite-Patrie, our AirGreen team installed aSharp wall-mounted heat pump in a narrow room, typical of Montreal apartments. The client's objective was to improve comfort in both summer and winter, without encroaching on floor space and while maintaining a clean and discreet finish.


Context: a small space that needs air conditioning and heating

The room to be air-conditioned presented several constraints:

  • Narrow wall and significant height , with a relatively low ceiling on one side.

  • Limited circulation space, requiring a compact installation.

  • Need a quiet , high-performance and aesthetically pleasing solution, adapted to Montreal's harsh climate.

The ideal solution quickly emerged: a Sharp wall-mounted heat pump , perfectly suited to the homes of Rosemont–La Petite-Patrie, where every centimeter counts.


Choosing the Sharp wall-mounted heat pump

For this project, we opted for a Sharp wall-mounted heat pump from the ZU1 series, 12,000 BTU , a typical capacity for a bedroom, an office, or a small open area:

  • Inverter technology allows for fine adjustment of power and reduction of electrical consumption.

  • Efficient heating operation, even when outside temperatures drop sharply.

  • Minimalist and clean design, which easily integrates into a contemporary interior.

By choosing Sharp, the customer benefits from reliable, efficient equipment that is compatible with the energy realities of Quebec.


Interior installation details

The photo clearly shows the Sharp wall-mounted head installed high on the wall, as close to the ceiling as possible. This positioning is not accidental:

  • It allows the conditioned or heated air to be distributed evenly throughout the room.

  • It completely frees up floor space.

  • It maximizes system efficiency by avoiding direct obstructions to airflow.

Our technicians worked from a stepladder, protected by cloths at the points of contact with the wall to avoid damaging the paint or leaving marks. This attention to detail is part of our working method: every installation must be both technically flawless and visually appealing .

The openings required for passage:

  • refrigerant pipes ,

  • electrical communication cable ,

  • and the condensation drain

The connections were made with precision, taking care to minimize the impact on the interior finish. The exit points of the connections to the outside are then capped and sealed to ensure watertightness and an aesthetically pleasing finish.


Comfort management in summer as well as winter

A properly sized and installed Sharp wall-mounted heat pump offers a double benefit to the customer:

  1. In summer :

    • Rapid and even cooling of the room.

    • Quiet operation, ideal for a home office or bedroom.

  2. In winter :

    • Stable and comfortable heating, without sudden temperature changes.

    • Reducing dependence on more energy-intensive traditional heating systems.

In a neighbourhood like Rosemont–La Petite-Patrie, where buildings are often old, a modern wall-mounted heat pump makes it possible to upgrade comfort without heavy work on the building structure.


Aesthetics and integration into the decor

Even though the heat pump is primarily a technical piece of equipment, we pay particular attention to its visual integration :

  • The Sharp indoor unit, with its understated white lines , blends into the color of the walls.

  • The elevated installation opens up the view and maintains a feeling of spaciousness.

  • The finishing touches (pipe routing, sealing, touch-ups as needed) are designed so that the system integrates naturally into the room.

The result: a system that is present… but discreet, doing its job without stealing the show from the scenery.


Installation quality: the AirGreen signature

Beyond the machine itself, it is the quality of the installation that guarantees performance and durability:

  • Compliance with the clearances recommended by the manufacturer for good air circulation.

  • Thorough checking of the refrigeration circuit's leak tightness .

  • Vacuum sealing, charging and complete functional tests (heating and air conditioning).

  • Explanation to the customer of how the remote control works , the modes and best practices to optimize consumption.

Each project is documented and carried out according to the standards in force in Quebec , in order to ensure the safety, performance and durability of the equipment.


Customer service and advice

To maintain the full potential of the Sharp wall-mounted heat pump, we recommend:

  • Regular cleaning of the filters (every 4 to 8 weeks depending on usage).

  • A periodic professional inspection to check the refrigerant pressure, the condition of the drain and the cleanliness of the indoor unit.

  • Using settings adapted to the seasons:

    • Air conditioning mode in summer with a reasonable temperature

    • heating mode at a stable temperature in winter, rather than sudden increases/decreases.

These simple actions prolong the life of the device and ensure optimal performance year after year .


Entrust your project to AirGreen

Whether you are in Rosemont–La Petite-Patrie or elsewhere in Greater Montreal, our AirGreen team will assist you from start to finish:

  • Analysis of your needs and the layout of your accommodation.

  • Recommendation of the correct Sharp model and capacity.

  • Neat, clean and safe installation.

  • After-sales service and maintenance to ensure your lasting comfort.

Do you want to modernize your heating and air conditioning system, reduce your energy costs and increase comfort?
We are here to advise you and carry out an installation that meets your expectations.

Your numbers

The job tools

Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.

Size checkYour baseboards, in BTU/h
–BTU/h of installed electric heat

    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.

    The steps

    How the job unfolds

    The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.

    Step 1 of 9The on-site estimate

    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.

    1. 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.
    2. The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
    3. Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
    4. The wall openingA single opening, with the slope the drain needs to flow outside.
    5. The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
    6. Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
    7. The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
    8. Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
    9. The walkthroughRemote, modes, filters: we show you the essentials before we leave.
    The tour

    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.

    Generic diagram: wall-mounted heat pump, indoor and outdoor units

    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.

    1. 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.

    2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

    3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

    4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

    5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

    6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

    7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

    At your place

    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.

    0 / 6 checked
    Maintenance

    Good habits, once the unit is in place

    Six simple habits that keep the unit going. Your list stays on this device.

    0 / 6 checked
    Through the seasons

    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.
    For your project

    The right pages, at the right time

    True or false

    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.

    2. You pick the capacity with a simple square-footage rule.

    3. A multi-zone connects several indoor heads to a single condenser.

    4. The disconnect can sit behind the patio furniture.

    Frequently asked questions

    What people ask us about this kind of work

    12 questions
    Does a wall-mounted heat pump heat in winter?
    Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
    Wall-mounted or multi-zone: how do I choose?
    One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
    Where does the outdoor unit go?
    Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
    Are there grants?
    Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
    How cold can it heat?
    It depends on the model. According to Hydro-Québec, newer models work down to a temperature between −15 °C and −25 °C, and some cold-climate models are certified lower. The minimum temperature is on each unit's spec sheet.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Is it noisy?
    The sound level depends on the model and is listed in decibels on each unit's spec sheet. Location matters too: when possible, we avoid putting the outdoor unit under a bedroom window.
    The outdoor unit is covered in ice: is that normal?
    Some frost is: the unit runs defrost cycles. Never hit the ice. If the unit stays iced up or stops heating, call us.
    Does AirGreen hold the required licences?
    Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
    Is the estimate free?
    Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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    An on-site estimate, the right capacity, the right equipment.

    The on-site estimate is free and the quote follows within 24 hours.

    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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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).

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