Project

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

AirGreen installed a Sharp Eco Inverter wall-mounted heat pump in Rosemont–La Petite-Patrie, providing this brick plex with four-season comfort, reduced consumption, and discreet integration into the facade.

By AirGreen Climatisation & Chauffage Admin7 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
7 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 duplexes are a common sight in Montreal. In this type of building, improving comfort while preserving the aesthetic appeal of the facade is a real challenge. This is precisely the objective of this project, where our AirGreen team installed a Sharp Eco Inverter wall-mounted heat pump , providing uncompromising four-season comfort.


Context: Modernizing the comfort of a brick duplex

The client, owner of a residential duplex, wanted:

  • Replace noisy and inefficient air conditioning solutions;

  • Add efficient heating to reduce reliance on electric baseboard heaters;

  • Choose a discreet installation, suitable for a brick facade visible from the courtyard;

  • Opt for a brand recognized for its reliability and air quality.

We recommended a Sharp Eco Inverter wall-mounted heat pump, perfectly sized for the area to be served. Inverter technology, high energy efficiency, and quiet operation make it an excellent choice for an urban environment like Rosemont–La Petite-Patrie.


The chosen system: Sharp Eco Inverter wall-mounted heat pump

The installed system is a Sharp wall-mounted heat pump , consisting of:

  • From an indoor wall-mounted unit (mini-split) in the main living area;

  • From a Sharp Eco Inverter outdoor unit installed on the brick facade, on wall brackets;

  • With a capacity of approximately 12,000 BTU , typical of Sharp ZU1 Eco Inverter models, ideal for a medium-sized home.

Key features of the Sharp system:

  • Eco Inverter technology : the compressor speed adjusts continuously, allowing for a stable temperature, fewer start-up cycles and energy savings;

  • Excellent performance in air conditioning in the summer and in heating at low temperatures, adapted to the Montreal climate;

  • Improved air quality thanks to Sharp's proprietary advanced filtration;

  • Quiet operation , both inside and out, is essential in a dense neighbourhood like Rosemont–La Petite-Patrie.

The photo also shows another outdoor unit installed further along the same wall, illustrating a configuration where each dwelling has its own wall-mounted heat pump , guaranteeing personalized comfort.


Installation details visible on the brick facade

The installation of this Sharp heat pump highlights several best HVAC practices:

1. Sturdy wall brackets

The outdoor unit is mounted on galvanized steel wall brackets securely anchored in the brick. This solution allows for:

  • To clear the unit from the ground to protect it from snow, ice and debris;

  • To reduce the risks of corrosion related to contact with moisture and rubble;

  • To free up floor space, while facilitating maintenance around the building.

The supports are installed at an optimal height : high enough for snow accumulation, but low enough to allow easy access during maintenance work.

2. Runoff and soil management

At the foot of the wall, a bed of river stones covers the ground. This detail serves both an aesthetic and a practical purpose:

  • It promotes water drainage , including water from defrosting the unit in winter;

  • It limits mud splashes on the facade;

  • It helps to maintain a clean environment around the device.

This combination of brick facade + stone bed integrates very well with the style of Rosemont's interior courtyards.

3. Refrigeration lines and power supply

We can distinguish:

  • The casing of the refrigeration lines which runs neatly towards the inside;

  • An electrical junction box installed near the outdoor unit, in accordance with applicable standards.

This attention to detail in the routing of the cables and conduits:

  • Protects components against shocks and weather;

  • Makes it easier to locate during a future interview;

  • It offers a clean visual finish, important for an owner who cares about the appearance of their building.


Project progress with AirGreen

1. Needs assessment and sizing

During the first visit, we:

  • Analyzed the configuration of the plex, the insulation and the orientation of the rooms;

  • Checked the condition of the brick facade and the ground;

  • Determined the ideal capacity of the Sharp wall-mounted heat pump to ensure efficient heating and cooling.

This sizing step is crucial: an oversized or undersized device is less comfortable, less efficient and more expensive in the long run.

2. Choice of indoor and outdoor location

Inside, the wall-mounted head unit was positioned so that:

  • Cover the main living area ;

  • Ensure good air circulation without direct drafts on the occupants;

  • Minimize the length of the pipes to the outside.

Outside, the location of the Sharp unit was chosen for:

  • Respect the required clearances around the device;

  • Reduce the visual impact from the street;

  • Limit noise pollution for the neighbors.

3. Installation, vacuuming and commissioning

Our certified technicians then:

  1. Pierced the facade for the passage of pipes, respecting the integrity of the brick;

  2. The outer casing was carefully installed and sealed;

  3. Attached the wall brackets, then the Sharp Eco Inverter unit;

  4. Connected the refrigeration lines, the drain, and the power supply;

  5. Performed a rigorous vacuum test , then tested the system's leak-tightness;

  6. The heat pump was put into service by checking the pressures, intensity, blowing temperatures and the response of the unit in heating and cooling modes.

We concluded by training the client on:

  • Using the Sharp remote control;

  • Recommended styles according to the season;

  • Best practices for optimizing the lifespan of the device.


Results: comfort, efficiency and preserved aesthetics

Following the installation of this Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie , the owner and occupants are enjoying:

  • Offering consistent comfort in both summer and winter;

  • A significant reduction in energy consumption , thanks to the high efficiency of the Eco Inverter system;

  • It operates quietly , which is much appreciated in an area where buildings are close together;

  • With a brick facade that retains its original charm , the device is neatly integrated on wall brackets.


Why have your Sharp heat pump installed by AirGreen?

As a company specializing in residential HVAC in Greater Montreal, we offer:

  • Concrete expertise with Sharp wall-mounted heat pumps and several other major brands;

  • Installations that comply with standards, carried out by qualified technicians ;

  • Comprehensive support: advice, sizing, installation, commissioning and after-sales service ;

  • An approach focused on the performance, sustainability and aesthetics of your property.

Whether you are in Rosemont–La Petite-Patrie, Villeray, Mercier–Hochelaga-Maisonneuve, Laval or on the South Shore, we can offer you a Sharp wall-mounted heat pump solution perfectly suited to your building.


Are you looking for a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie?

Contact us for an in-home assessment. We will analyze your needs, recommend the most suitable model, and perform a meticulous, durable installation optimized for Quebec winters.

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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    Every house has its constraints. We see them before we install.

    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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