Project

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

In Rosemont–La Petite-Patrie, AirGreen installed a Sharp Eco Inverter wall-mounted heat pump on the brick facade of a typical plex in the neighbourhood. The outdoor unit, mounted on raised supports and perfectly integrated into the building, provides efficient heating and cooling while remaining discreet and quiet, for optimal comfort in the heart of Montreal.

By AirGreen Climatisation & Chauffage Admin5 min read
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
–chapters in this story
5 minreading time
–type of installation
2026year published
The tour

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.

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.

The job

In Rosemont–La Petite-Patrie, red brick plexes are part of the landscape. In this vibrant neighbourhood where winters are harsh and summers increasingly hot, our clients were looking for a heating and air conditioning solution that was efficient, discreet and energy-saving.

We recommended they install a new generation Sharp wall-mounted heat pump , with an Eco Inverter outdoor unit and Ion Plasmacluster technology, perfectly suited to the Montreal climate.


Project context in Rosemont–La Petite-Patrie

The building is a typical brick residential building with a concrete base slightly raised above sidewalk level. The owners wanted:

  • Improve comfort in summer as well as winter;

  • Reduce electricity bills compared to old electric convectors;

  • Enjoy a silent system that does not disturb their peace or that of the neighborhood;

  • Opt for a clean, reliable and sustainable solution, compatible with energy efficiency programs.

The Sharp wall-mounted heat pump , in a single-zone configuration, perfectly met these requirements.


The Sharp wall-mounted heat pump: performance and reliability

The Sharp Eco Inverter range is distinguished by:

  • A variable speed inverter compressor, which continuously adapts the power supplied;

  • Excellent energy efficiency, particularly beneficial in the mid-season;

  • Reliable operating capability in Quebec winters, with efficient heating down to well below freezing temperatures;

  • Ion Plasmacluster technology, which improves air quality by reducing certain particles and allergens.

In this project, we installed a Sharp Eco Inverter wall-mounted outdoor unit, sized to cover the main living area (living room, dining room, and open-plan kitchen). The sizing was determined taking into account:

  • Of the actual surface area of ​​the rooms;

  • From the existing insulation of the brick plex;

  • Regarding window orientation and solar gain;

  • Occupancy habits of the occupants.


Details of the outdoor installation

The photo clearly shows the Sharp outdoor unit attached to the brick rear facade. Several technical choices were made to guarantee performance, durability, and aesthetics.

1. Wall mounting on raised supports

The unit is installed on sturdy wall brackets securely anchored to the wall:

  • Height calculated to keep the device above the snow in winter, while remaining accessible for maintenance;

  • Clearance distances respected to ensure good air circulation around the device;

  • Optimized tilt and positioning to promote condensate drainage and avoid vibrations.

This configuration prevents the accumulation of snow and ice around the condenser and facilitates service operations.

2. Protection of the building envelope and integration with the facade

The red and brown brick facade is typical of Rosemont–La Petite-Patrie. We paid particular attention to visual integration:

  • Minimal and carefully sealed perforations;

  • Passing of refrigeration lines and cables through aesthetic conduits (casing) for a clean finish;

  • Respect for the existing structure: no unnecessary overloading of the masonry.

The result: a well-integrated outdoor unit that blends into the facade without cluttering it.

3. Noise and Neighborhood Management

Sharp Eco Inverter heat pumps are known for their low noise level :

  • The fan and compressor are designed to limit noise in low and medium speed mode;

  • The positioning was chosen to direct noise and airflow away from neighboring windows ;

  • Wall mounting with silent blocks reduces vibrations transmitted to the structure.

Neighbors therefore benefit from a quiet environment, even on the hottest days of summer.


Indoor installation details (wall unit)

Even though the indoor unit is not visible in the photo, its location has been carefully planned:

  • High installation on a clear wall in the living/dining room , for uniform air distribution;

  • Positioning that avoids blowing directly on the occupants;

  • Discreet routing of refrigeration lines to the outside, behind the unit, to minimize visual impact.

The combination of indoor wall unit and Sharp Eco Inverter outdoor unit allows for very precise temperature control :

  • Efficient heating mode in winter, even during intense cold;

  • Comfortable air conditioning mode in summer, without unpleasant drafts;

  • Dehumidification mode is convenient for hot and humid days.


Four-season comfort in Rosemont–La Petite-Patrie

With this Sharp wall-mounted heat pump, the family now benefits from:

  • Stable and comfortable heating throughout the winter, without sudden temperature variations;

  • Efficient air conditioning during heat waves, keeping the house cool while controlling electricity consumption;

  • Healthier indoor air thanks to Ion Plasmacluster technology;

  • A discreet, silent and aesthetically pleasing solution for both indoor and outdoor use.

The system also helps to reduce reliance on less efficient traditional electrical systems, resulting in medium and long-term energy savings .


A turnkey project by AirGreen

At AirGreen, we support our clients at every stage:

  1. Analysis of needs : surface area, insulation, orientation, lifestyle habits;

  2. Recommendation for the correct Sharp heat pump capacity ;

  3. Professional installation by a certified team, respecting current electrical and refrigeration standards;

  4. Complete commissioning and explanation of operation to the occupants;

  5. After-sales service for maintenance, cleaning and seasonal inspections.

Our goal is simple: to offer reliable, durable and efficient heat pump systems, perfectly adapted to the climate of Montreal and the reality of residential buildings like those in Rosemont–La Petite-Patrie.


Why choose a Sharp heat pump with AirGreen?

  • Brand recognized for its cutting-edge technology (Eco Inverter, Ion Plasmacluster);

  • High energy efficiency , which helps to reduce operating costs;

  • Four-season comfort even in harsh climates;

  • Careful installation , respect for the building envelope and refined aesthetics;

  • Local team based in Montreal, available for follow-up and maintenance.

If you live in Rosemont–La Petite-Patrie, or elsewhere in Greater Montreal, and are considering installing a Sharp wall-mounted heat pump , our team will be happy to assess your project and offer you a customized solution.

The steps

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.

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.
Your numbers

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.

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.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Going further

    Your own project, step by step

    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.
    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
    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.

    Could this job help a neighbour?

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    • 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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