Job sheet · Project

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

Discover this Sharp wall-mounted heat pump installation by AirGreen in a Rosemont–La Petite-Patrie duplex. With its raised wall bracket, discreet piping, and safe electrical connection, this project is designed for comfort, aesthetics, and performance in the heart of Montreal.

By AirGreen Climatisation & Chauffage Admin5 min read
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At a glance

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Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie (Montreal)
Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie (Montreal)
The full story

The article, chapter by chapter

In this project in Rosemont–La Petite-Patrie, we installed aSharp wall-mounted heat pump on a typical Montreal brick duplex. The client's objective was clear: to improve year-round comfort while respecting the aesthetics of the facade and the constraints of a narrow passage between two buildings.


The context: a narrow passage between two buildings

The house is located in a very narrow side alley, with a red brick wall on one side and a wooden cladding on the other.
This type of environment imposes several constraints:

  • Limited floor space for installing a condenser on a slab.

  • Pedestrian traffic in the passageway to access the back yard.

  • Proximity to neighbors , which requires a discreet and quiet installation.

  • Direct exposure to the weather (snow, ice, rain) typical of Montreal winters.

We therefore opted for a fully wall-mounted solution, compact and perfectly suited to the realities of urban duplexes.


Equipment choice: Sharp ZU1 wall-mounted heat pump

For this project, we installed a Sharp ZU1 single-zone wall-mounted heat pump , a residential line known for:

  • its high energy efficiency ,

  • its stable operation in both heating and air conditioning ,

  • and its reliability in the Quebec climate.

Why a Sharp wall-mounted heat pump?

  • Ideal for main living areas (living room, dining room, open area);

  • Very quiet , which is important in a narrow alley and for the comfort of the neighbors;

  • Use of a new generation refrigerant, contributing to better energy performance;

  • Precise temperature control, summer and winter.

Inside, the wall-mounted head was positioned to effectively cover the main living area, while maintaining the shortest and most discreet possible pipe passage to the outside.


A neat and durable outdoor installation

The image clearly shows several key elements of a professional installation by AirGreen.

1. Condenser mounted on an elevated wall bracket

The Sharp condenser is installed on a robust wall bracket , securely fixed to the brick wall:

  • Sufficient height to protect it from snow, ice and splashes on the ground;

  • Adequate clearance at the rear and sides to ensure good air circulation ;

  • Freeing up floor space in the passageway allows for free movement and storage of wheeled bins without risk of impact against the device.

This mural approach is particularly relevant in dense neighbourhoods like Rosemont–La Petite-Patrie , where every centimeter counts.

2. Refrigeration pipes protected and integrated into the facade

The refrigeration lines and communication cables are:

  • Insulated and encased in a vertical technical cover in a color coordinated with the brick;

  • Securely attached to the wall , which avoids tension on the fittings;

  • Positioned to minimize visual impact from the street.

This type of finish is essential: a well-installed heat pump with a poor visual finish can detract from a building's overall appearance. Here, the installation blends seamlessly into the brick facade.

3. Compliant electrical box and protective devices

Below the condenser, we can also see:

  • An electrical disconnect box installed within easy reach for maintenance;

  • Clean, secure wiring that complies with local electrical standards .

These elements ensure the safety of the installation , facilitate maintenance interventions and extend the life of the system.


Four-season interior comfort

Thanks to this Sharp wall-mounted heat pump , the occupants now benefit from:

  • Effective cooling during summer heatwaves;

  • An efficient auxiliary heating system for the shoulder seasons and winter, allowing the main system to be relieved and the energy bill to be reduced;

  • Precise temperature control via remote control or advanced controls;

  • With quiet operation , ideal for a dense urban environment.

The device also contributes to better indoor air quality by filtering dust and particles, thus improving daily comfort.


An installation designed for Montreal's winter

Even though the photo was taken in the summer, the design of the installation takes into account harsh winters:

  • Sufficient height to avoid being buried in the snow;

  • Clear space around the condenser to allow air to circulate, even during significant accumulations;

  • Condensate drainage and defrosting are planned to prevent the formation of dangerous ice patches on the floor.

This proactive work is essential to ensure the reliability of the Sharp heat pump throughout the winter .


Why choose AirGreen for your Sharp heat pump in Montreal?

At AirGreen, we support our clients from equipment selection to final installation , including advice on available subsidies when applicable. Our approach:

  • Analysis of the building, occupancy and actual needs;

  • Proposal of the most suitable Sharp model (capacity, performance, configuration);

  • Careful installation, in accordance with industry standards and manufacturers' requirements ;

  • After-sales service, maintenance and long-term technical support.

Whether you are in Rosemont–La Petite-Patrie , in another Montreal neighbourhood, in Laval, on the North Shore or the South Shore, we put the same rigor into every project.


In summary

This Sharp ZU1 wall-mounted heat pump installation in Rosemont–La Petite-Patrie perfectly illustrates what we love to do:
a high-performance, discreet system, perfectly integrated into the existing architecture, and designed to offer maximum four-season comfort to occupants, without compromising on aesthetics or durability.

Are you considering a similar project? We would be happy to assess your home and offer you the Sharp solution best suited to your situation .

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.

    Could this job help a neighbour?

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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
    • EstimateOn site, free
    • QuoteWithin 24 hours

    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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