Project

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

AirGreen installed a Sharp ZU1 wall-mounted heat pump in a home in Rosemont–La Petite-Patrie, providing efficient heating and cooling year-round. A quiet, discreet solution perfectly suited to Montreal's climate, installed by our certified technicians.

By AirGreen Climatisation & Chauffage Admin6 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
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.

In this project, our AirGreen team was called in to improve the comfort of a typical home in the Rosemont–La Petite-Patrie neighbourhood. The client wanted a quiet, efficient heating and cooling solution that would perform well in both winter and summer, without taking up floor space and while respecting the room's interior aesthetics. We recommended the installation of a Sharp wall-mounted heat pump , model Sharp ZU1 12,000 BTU , perfectly suited to the home's layout.


A discreet and efficient Sharp wall-mounted system

The installed heat pump is a new generation Sharp residential wall-mounted unit . This type of system is ideal for living rooms, bedrooms, or home offices, thanks to:

  • Its compact and discreet size ;

  • Its motorized flap directs the air evenly;

  • Its quiet operation is particularly appreciated in rooms where one sleeps or works;

  • Its ability to provide heating in winter and air conditioning in summer, with a single machine.

The chosen Sharp ZU1 model offers an excellent compromise between performance, comfort, and energy efficiency. For a medium-sized room, around ten to fifteen square meters, it's a very sensible choice that ensures a stable temperature all year round.


Integration into a house in Rosemont–La Petite-Patrie

The house where we worked is typical of the area: relatively high ceilings, interior openings with white moldings, walls painted in custom colors — here, a pale mauve wall that gives a warm and modern touch.

To maximize comfort, we have:

  • Position the Sharp wall head high, near the ceiling, which allows the conditioned or heated air to be diffused evenly throughout the room;

  • Install the unit above an interior doorway , so as to take advantage of natural air movements between rooms;

  • We opted to run the refrigeration lines directly behind the unit , in order to minimize visible elements and preserve the aesthetics of the wall.

The result: the unit blends seamlessly into the space, with a clean and understated look. The white front panel of the heat pump harmonizes perfectly with the moldings and ceiling, without overpowering the decor.


Technical details and quality of the installation

At AirGreen, we attach great importance to the quality of installation , as it is just as important as the brand or model chosen.

For this Sharp wall-mounted heat pump, we have, in particular:

  • Securely attach the mounting plate to the wall structure;

  • The unit level was precisely checked to ensure proper condensate drainage;

  • Carefully check the refrigeration connection between the indoor unit and the outdoor compressor (not visible in the photo), with vacuuming and leak testing;

  • The electrical wiring was sized according to current standards and the manufacturer's specifications;

  • Configure the operating modes (heating, air conditioning, dehumidification, ventilation) so that the customer can quickly enjoy all the benefits of their Sharp system.

Thanks to these steps, the heat pump offers optimal performance, a long lifespan and controlled energy consumption.


Four-season comfort in Montreal's climate

Montreal's climate, and particularly that of areas like Rosemont–La Petite-Patrie, presents significant temperature variations: heat waves in summer and intense cold in winter. A properly installed Sharp wall-mounted heat pump can help meet these challenges.

  • In summer : the unit effectively cools the room, reduces humidity and maintains comfortable air, even during heat waves.

  • During the off-seasons : the heat pump takes over from the main heating system to limit energy consumption, while offering a very stable temperature.

  • In winter : heat pump technology allows the room to be heated quickly and evenly, with excellent efficiency, even when the mercury drops well below zero.

The customer thus benefits from four-season comfort , while reducing their energy bill compared to traditional electric heating.


An installation designed for the customer's everyday life

Beyond the technical aspects, our goal is always to deliver a system that is simple to use on a daily basis . Therefore, we have:

  • Took the time to explain to the customer how the remote control works (or the application, if the model is connected): temperature setting, programming, eco modes, fan speed;

  • Recommended good usage practices : keep filters clean, avoid excessively extreme temperature settings, use the dehumidification mode on very humid days;

  • We introduced our maintenance service to ensure periodic cleaning of the coils and outdoor unit, in order to keep the heat pump performing well for many years.

The result is a turnkey solution that immediately improves home comfort and the quality of life for its occupants.


Why choose AirGreen for your Sharp heat pump in Montreal?

As a company specializing in residential HVAC in Greater Montreal, we support our clients from start to finish :

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

  • Recommendation of a Sharp heat pump or another brand suitable for your situation;

  • Installation carried out by certified technicians , accustomed to the realities of the Quebec climate;

  • Assistance for grant programs where applicable;

  • After-sales service, maintenance and technical support.

Whether you are in Rosemont–La Petite-Patrie, in another Montreal neighbourhood, in Laval, on the North Shore or the South Shore, our team is here to offer you the most relevant solution for your comfort and budget.


Are you considering a Sharp wall-mounted heat pump for your home?

If you like the idea of ​​a discreet, quiet, and efficient installation like the one in this Rosemont–La Petite-Patrie home, contact us . We would be happy to assess your project, suggest the right size, and guide you toward year-round comfort adapted to Montreal's climate.

The steps

How it goes, from the first call to the end

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

And 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.

    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.
    And at your place?

    Which type of equipment for your project?

    Pick what looks like your need.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    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.
    Going further

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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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