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Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont

Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont by AirGreen: four-season comfort, energy efficiency and discreet integration into a Montreal duplex.

By AirGreen Climatisation & Chauffage Admin3 min read
Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont
Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont
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.

A high-performance heat pump harmoniously integrated into a Montreal duplex

At AirGreen , we recently installed a Sharp Eco Inverter wall-mounted heat pump in the Rosemont–La Petite-Patrie neighborhood, an area characterized by red brick plexes and wooden decks. The client's goal was clear: to benefit from an energy-efficient HVAC system that provides four-season comfort while blending discreetly into the architecture of their home.


Choosing the Sharp Eco Inverter

The Sharp Eco Inverter range impresses with its Plasmacluster technology , which improves air quality by neutralizing certain impurities, as well as its reliable heating capacity even in harsh Quebec temperatures. This compact wall-mounted heat pump is distinguished by:

  • High energy efficiency thanks to its inverter compressor.

  • An operating range adapted to Montreal winters.

  • A reduced exterior noise level, appreciated in a dense residential area like Rosemont.

  • Eligibility for provincial and federal grant programs , subject to Energy Star eligibility.


The Challenges of Moving into a Montreal Duplex

The installation was carried out on a rear wooden terrace , with the need for:

  • Secure the outdoor unit to a raised aluminum support , allowing good stability and safe clearance from the wooden floor.

  • Ensure gravity drainage of condensates , thus avoiding the need for an additional pump.

  • Install discreet capping along the wall to protect the refrigeration and electrical connections, while respecting the aesthetics of the brick building.

The wiring has been designed for clean and safe integration, taking into account the proximity of the interior electrical panel.


Result: comfort, efficiency and peace of mind

At the end of the project, the client benefits from a complete system that:

  • Effectively cools down Montreal's hot summers.

  • Heats the main space with stable performance, even when temperatures drop well below zero.

  • Contributes to significant energy savings compared to exclusively electric heating.

  • Improves indoor air quality with Sharp's unique ionizing function.


AirGreen expertise in Greater Montreal

At AirGreen, each project is designed based on the building's real-world constraints and the client's expectations. In Rosemont, as elsewhere in Greater Montreal, Laval, Longueuil, the North Shore, and the South Shore , we install wall-mounted heat pumps adapted to Quebec's climate. Our team not only handles installation, but also after-sales service and HVAC maintenance , thus guaranteeing the durability of the equipment.


Practical advice for Montreal homeowners

  • Height and support : Installing the heat pump on a raised surface prevents snow accumulation and extends the life of the outdoor unit.

  • Quality capping : protects ducts against humidity and temperature variations.

  • Regular maintenance : annual cleaning prevents dust accumulation and optimizes performance.

  • Grants : Checking eligibility for the LogisVert and Greener Homes programs helps reduce the initial investment.


AirGreen, a trusted HVAC partner in Montreal

This project further demonstrates our commitment to providing reliable, efficient, and aesthetically pleasing HVAC installations throughout Greater Montreal. With a dedicated and qualified team, we ensure that every client enjoys lasting comfort and controlled energy bills .

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

    Useful pages for what comes next

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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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