Project

Installation of a Gree wall-mounted heat pump in Brossard

In Brossard, our team installed a Gree wall-mounted heat pump with a raised outdoor unit, seamlessly integrated into the landscaping beneath a deck. This configuration ensures excellent winter performance, quiet operation, and significant energy savings for the homeowners.

By AirGreen Climatisation & Chauffage Admin6 min read
Installation of a Gree wall-mounted heat pump in Brossard
Installation of a Gree wall-mounted heat pump in Brossard
–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 Brossard, on Montreal's South Shore, the owners of this single-family home wanted to upgrade their heating and air conditioning system. Their goal: to enjoy year-round comfort while reducing their electricity bill. They chose to have a Gree wall-mounted heat pump installed by our team.


Context: a suburban house with a landscaped backyard

The house is typical of Brossard:

  • exterior cladding in masonry and plaster;

  • raised terrace at the rear;

  • landscaping with rock garden, slabs and mature hedges;

  • Steel fence to secure access to the property.

The owners make extensive use of their backyard and wanted an efficient yet discreet installation that would not spoil the aesthetics of the garden or the access under the deck for maintenance.


Choosing the Gree wall-mounted heat pump

We recommended a Gree Inverter wall-mounted, single-zone heat pump , ideal for supplying the main living area of ​​the house (open-plan living room and kitchen).

Why Gree for this Brossard residence?

  • Inverter technology : the compressor continuously modulates to provide just the right amount of power, reducing sudden starts, noise and consumption.

  • Great heating comfort : the Gree heat pump is designed to maintain good heating capacity even during the intense cold we experience in Montérégie.

  • Excellent energy performance : the seasonal ratio (SEER/HSPF) allows for substantial savings compared to electric heating alone.

  • Reliability and parts availability : the Gree brand is well established in Quebec, which facilitates after-sales service, maintenance and repairs if necessary.

Inside, a compact wall-mounted unit was installed in the main living area, positioned to circulate air towards the kitchen and living room without blowing directly on the occupants. The entire system blends seamlessly with the existing décor.


Gree Outdoor Unit Installation Details

The photo shows the Gree outdoor condenser installed on a raised aluminum structure, resting on two robust slabs. Several technical choices were made to ensure performance, longevity, and safety.

1. Elevation and protection against snow

  • The condenser is mounted on a rigid support with metal feet, which places it above ground level.

  • This height reduces the risks associated with the accumulation of snow, ice and runoff water.

  • The area under the terrace offers natural protection against the elements while still allowing space for air circulation.

2. Stable base on slabs and rocks

Under the support, we used thick slabs laid on a bed of stones, already present in the landscaping.
Result :

  • a stable base to limit vibrations;

  • adequate clearance for water drainage;

  • a harmonious integration with the natural stones of the garden.

3. Clearances and air circulation

Even though the unit is positioned close to the wall of the house, we have respected all the clearances recommended by Gree to guarantee good air circulation:

  • free space at the rear and on the sides;

  • facade completely unobstructed;

  • Optimized orientation in relation to the fence and hedge to avoid hot air recirculation in winter.

4. Duct management and aesthetics

The refrigerant lines, wiring, and condensate drain are grouped together in a vertical enclosure running along the wall. This allows:

  • to protect the lines from UV rays, snow and impacts;

  • to maintain a clean and professional finish , without visible cables;

  • to make maintenance simpler, because the whole process is clear and accessible.

An external circuit breaker was installed near the unit to comply with the electrical code and to ensure safe maintenance operations.


Performance in Quebec winter

In Brossard, winters can be harsh, with wind, heavy snow, and frequent freeze-thaw cycles. The installation of this Gree wall-mounted heat pump takes these realities into account:

  • The raised platform on metal supports limits the accumulation of ice under the unit.

  • The space between the stones allows the defrosting water to drain easily.

  • Partial protection of the terrace minimizes the direct impact of rainfall on the equipment.

Thanks to its Inverter technology and its design for northern climates, the Gree heat pump offers stable, quiet and economical heating during the cold season, while remaining ready to cool the house as soon as the first warm days of spring arrive.


Tangible benefits for homeowners

Since the installation, the owners have benefited from:

  • Increased comfort in their main living area, both summer and winter.

  • A reduction in the electricity bill , especially for heating, since the heat pump largely replaces electric baseboard heaters.

  • A preserved outdoor space : the unit is discreet, well integrated into the rockery and does not encroach on the circulation areas of the terrace.

  • A very low noise level in the courtyard, which allows you to fully enjoy the terrace during the warmer months.


AirGreen support: from design to maintenance

Our work doesn't end with installation. We also:

  • explained to the customer how the Gree wall-mounted heat pump works, the different modes (heating, air conditioning, dehumidification, auto, eco);

  • detailed best practices for use to maximize savings;

  • showed how to clean the wall-mounted head filters;

  • Regular maintenance is recommended to preserve performance over the years (inspection, deep cleaning, pressure checks, electrical checks).

By choosing AirGreen, the owners of this Brossard home know they can count on a team available for service, technical questions and future adjustments.


Do you live in Brossard or on the South Shore?

Whether you are in Brossard, Boucherville, La Prairie, Saint-Lambert or elsewhere on the South Shore, we can offer you a Gree wall-mounted heat pump solution tailored to your home, your lifestyle and your budget.

We take care of:

  • analyzing your needs;

  • choosing the right size;

  • the complete and compliant installation;

  • monitoring and maintenance.

Contact us to discuss your project: we would be delighted to transform your home, like this one, into a comfortable and energy-efficient space all year round.

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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    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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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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