Project

Installation of a Gree wall-mounted heat pump in a family room in LaSalle

In LaSalle, AirGreen installed a Gree wall-mounted heat pump in a basement family room to ensure year-round comfort. Positioned high on a clear wall, the unit provides heating, cooling, and dehumidification while reducing electricity bills and blending seamlessly into the room.

By AirGreen Climatisation & Chauffage Admin6 min read
Installation of a Gree wall-mounted heat pump in a family room in LaSalle
Installation of a Gree wall-mounted heat pump in a family room in LaSalle
–chapters in this story
6 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 LaSalle, many homeowners want to make their basement or family room as comfortable as the rest of the house. This was exactly the case in this residence where the main basement room was cold in winter, stifling in summer, and difficult to heat with electric baseboard heaters alone.

Our AirGreen team therefore recommended the installation of a Gree wall-mounted heat pump , a four-season solution perfectly suited to this type of space: relatively low ceiling, clear walls and the presence of furniture near the partitions.


A targeted comfort project for the basement

The family room is used as both a relaxation area and a workspace. It features a large tabletop and storage space, making air quality and temperature particularly important for everyday comfort.

The client's objectives were clear:

  • eliminate the feeling of cold in the basement during winter;

  • to enjoy fresh, dry air during heat waves;

  • maintain a calm environment, without excessive noise;

  • minimize the visual impact of the device on the main wall.

A Gree wall-mounted heat pump meets these needs perfectly by combining heating, cooling and dehumidification in a single compact unit.


A new generation Gree wall-mounted heat pump

We installed a new generation Gree wall-mounted heat pump , with a capacity suited to the size of the family room (approximately 12,000 BTU). This type of heat pump uses an inverter compressor, which continuously adjusts its power rather than simply "opening" and "closing" like a traditional unit.

In practical terms, this means:

  • a stable temperature , without sudden variations;

  • reduced electricity consumption , since the machine runs more often at low speed;

  • a very low noise level , ideal for watching a movie, working or letting children play without being disturbed.

The discreet digital display on the front – clearly visible in the photo – allows you to check the set temperature at a glance, while the remote control offers precise control of the modes and fan speed.


Installation details: Neat integration on a clear wall

The Gree wall-mounted head was installed high up, near the ceiling, on a largely unobstructed wall. This positioning was chosen for several technical and practical reasons:

  • optimize air circulation : the air blown by the heat pump gradually descends into the room, ensuring a uniform distribution of heat or coolness;

  • avoid blowing directly on the occupants seated at the table;

  • maintain sufficient clearance around the unit for maintenance and to comply with the manufacturer's recommendations.

We also noted the presence of a smoke detector on the ceiling nearby. We verified that the airflow did not interfere with its operation and that the safety clearances were respected.

Behind the unit, an opening to the outside allows for the passage of refrigerant lines and the condensate drain. On the exterior, these lines are protected by a cover and connected to the Gree condensing unit, which is installed on a stable base or slab, sheltered from snow accumulation as much as possible. The drain is routed in such a way as to remove water cleanly, without dripping onto the flooring.

The overall result is a clean and simple installation: the heat pump becomes an element integrated into the wall, without visible cables or unsightly accessories.


Four-season comfort in Montreal's climate

In LaSalle, as elsewhere in Greater Montreal, the weather puts heating and air conditioning systems to the test: damp cold in January, oppressive heat in July. The Gree wall-mounted heat pump offers an effective solution to these variations.

  • In heating mode , it recovers heat from the outside air and transfers it inside, even at low temperatures, which is much more efficient than simple direct electric heating. The family room heats up very quickly, making it usable early in the morning or late in the evening without having to overheat the rest of the house.

  • In cooling mode , the Gree heat pump cools the room while removing excess humidity, providing a feeling of comfort far superior to that of a simple fan or portable air conditioner.

  • In dehumidification mode , it helps keep the basement dry, limiting the risk of mold and improving air quality.

Thanks to power modulation, the device avoids frequent on/off cycles, which increases its lifespan while improving acoustic comfort.


Energy efficiency and savings for the homeowner

Switching to a Gree wall-mounted heat pump is also a smart, cost-effective choice . By replacing or reducing the load on baseboard heaters in the basement, the unit helps lower your Hydro-Québec bill over the year.

The owner thus benefits:

  • of better energy efficiency for each kWh consumed;

  • of a basement that is actually usable all year round, which increases the value of the house;

  • of a modern system, compatible with current expectations in terms of comfort and performance.

During commissioning, we assisted the client with basic programming: comfort temperatures, night mode, advice for optimal use according to the season, and a reminder about periodic filter cleaning .


AirGreen, your Gree wall-mounted heat pump partner in LaSalle and Greater Montreal

At AirGreen, we install Gree wall-mounted heat pumps in all types of residences: bungalows, duplexes, townhouses, condos, and rental units. Each project is tailored to the client's specific needs: square footage, insulation, room usage, installation constraints, and municipal or condominium regulations.

Whether you want to make a basement family room more comfortable, as in this case, or air-condition several strategic rooms in your LaSalle home, we can offer you a customized, high-performance, and sustainable solution.

Do you have a wall-mounted heat pump project in Greater Montreal? Contact us: our team will be happy to assess your situation and recommend the Gree option best suited to your budget and needs.

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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