Project

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

AirGreen has completed the installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie, an efficient and discreet solution ideal for residential comfort in Montreal, summer and winter.

By AirGreen Climatisation & Chauffage Admin3 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
3 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 a residential building in Rosemont–La Petite-Patrie , our AirGreen team recently completed the installation of aSharp wall-mounted heat pump , a choice perfectly suited to Montreal's urban realities. This type of dwelling, often composed of well-defined rooms, closed kitchens, and load-bearing walls, requires an HVAC solution that is compact, efficient, and discreet—exactly what the Sharp wall-mounted line offers.

A Sharp wall-mounted heat pump designed for residential comfort

The installed unit is a Sharp wall-mounted heat pump , a mini-split system known for its reliability, energy efficiency, and quiet operation. Visually, the sleek white indoor unit blends seamlessly into the space without cluttering the room's aesthetic. This type of unit is ideal for apartments and houses in central neighborhoods like Rosemont, where every inch counts.

Although the exact model is not explicitly legible on the indoor unit, the visual characteristics and consistency with Sharp installations carried out by AirGreen point towards a Sharp ZU1 , a very popular model in Quebec residential settings.

Consistent model: Sharp ZU1 (R-32)

The Sharp ZU1 is a new generation wall-mounted heat pump that uses the more environmentally friendly R-32 refrigerant . It is available in several capacities (12,000 to 24,000 BTU), allowing for precise adaptation to the heating needs of the home.

Installation details observed on the construction site

The installation took place in a residential kitchen, an environment that imposes certain specific constraints:

  • High-mounted wall installation , near the ceiling, ensuring optimal distribution of hot and cold air

  • Adequate clearance from the wooden kitchen cabinets, preventing any obstruction to airflow

  • Strategic location allowing for effective coverage of adjacent living areas

  • Discreet routing of refrigeration lines , minimizing visual impact

  • Seamless integration into an already occupied space (appliances, furniture, storage)

This type of configuration is common in Rosemont–La Petite-Patrie, where kitchens are often central and play a key role in air circulation within the dwelling.

Why a Sharp wall-mounted heat pump is an excellent choice in Rosemont

Rosemont residences often present well-known challenges: variable insulation, shared walls, noise restrictions, and the need for efficient heating in winter. The Sharp wall-mounted heat pump addresses these challenges precisely.

Concrete benefits for the customer

  • Efficient heating during Quebec winters , even during periods of sustained cold.

  • Stable and quiet air conditioning during the summer, without unpleasant drafts

  • Reduced energy consumption compared to traditional electrical systems

  • Precise temperature control , room by room

  • Low noise level , a major advantage in dense urban environments

Thanks to Sharp's Inverter technology, the heat pump continuously adjusts its power, avoiding on/off cycles and ensuring constant comfort.

The AirGreen approach: precision, sustainability and transparency

At AirGreen, each installation is designed based on the actual dwelling, not just theoretical specifications. Before proceeding, we analyze:

  • the area to be air-conditioned/heated,

  • the layout of the rooms,

  • the orientation of the housing,

  • the lifestyle habits of the occupants,

  • and the architectural constraints specific to the neighborhood.

In Rosemont–La Petite-Patrie, this approach is essential to ensure a system that is neither oversized nor undersized , thus maximizing the performance and lifespan of Sharp equipment.

An HVAC solution tailored to Montreal's central neighborhoods

This installation perfectly illustrates why Sharp wall-mounted heat pumps are increasingly popular in Montreal neighbourhoods like Rosemont, Villeray, and Plateau-Mont-Royal. They offer an ideal balance of performance, quiet operation, and energy efficiency, while easily integrating into existing homes without major renovations.

At AirGreen, we regularly install Sharp heat pumps in Montreal, Laval, on the North Shore and the South Shore, always with the same objective: to offer lasting comfort, summer and winter, adapted to local realities.

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.

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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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