Project

Installation of a Gree wall-mounted heat pump in Brossard

In Brossard, AirGreen installed a Gree wall-mounted heat pump for a single-family home on the South Shore. The condenser is positioned under the deck, on a raised and well-drained support, to protect it from snow while ensuring excellent air circulation. The result: consistent comfort year-round, with significant energy savings for the homeowner.

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
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 Brossard, on Montreal's South Shore, a homeowner wanted to upgrade his heating and air conditioning system. His goal: to reduce his energy bill while increasing comfort, both summer and winter.

We suggested the installation of a Gree wall-mounted heat pump with Inverter technology , an ideal solution for a suburban residence with a terrace and backyard.


Context of the residential project in Brossard

The house is typical of Brossard: a front yard entrance, a raised back patio, a concrete slab, and paved landscaping. The client was still using more energy-intensive heating systems and a portable air conditioner to cool a few rooms, without any real precise temperature control.

The main challenges:

  • Unequal comfort between the ground floor and the upper floor;

  • Overheating in summer in rooms facing the sun;

  • High heating costs in winter, despite the house being properly insulated.

Installing a Gree wall-mounted heat pump made it possible to address these challenges while preparing the house for the harsh winters of Greater Montreal.


Choosing a Gree Inverter wall-mounted heat pump

We recommended a Gree single-zone wall-mounted heat pump with inverter technology . This residential line from Gree is designed to offer:

  • High energy efficiency : the Inverter compressor continuously adapts its power according to the actual heating or cooling demand, which reduces electricity consumption.

  • Excellent performance in winter : the unit continues to heat efficiently even when the mercury plunges below −20 °C, a well-known reality on the South Shore.

  • Quiet operation : both for the indoor unit and the outdoor unit, which is appreciated in a quiet residential area of ​​Brossard.

  • High reliability : Gree is one of the brands we install most often at AirGreen, especially for wall-mounted heat pump projects.

Inside, the Gree wall head was installed in the main living area to serve the living room, kitchen and part of the upstairs, creating centralized comfort for the whole family.


Details of the outdoor installation under the terrace

The photo clearly shows the Gree outdoor unit installed under a concrete slab, sheltered by a balcony or terrace. This location choice is strategic for the Quebec climate.

Weather protection

By positioning the condenser under the terrace structure , we offer:

  • a natural protection against snow and ice ;

  • a reduction in ice buildup on top of the unit;

  • better protection against driving rain and direct sunlight , which helps to extend the life of the device.

This configuration remains in line with the manufacturers' recommendations: the unit has enough space around it to ensure good air circulation at the front and sides.

Elevated and stable support

The Gree heat pump is installed on a raised metal stand , itself placed on stable concrete slabs/blocks. This approach offers several advantages:

  • The unit is raised above ground level , which protects it from accumulated snow and meltwater in the spring.

  • The support ensures good mechanical stability , limiting vibrations and noise transmitted to the building.

  • The whole thing remains easily accessible for maintenance , without direct contact with the soil or garden plants.

Under and around the unit, we leveled the ground with rock and gravel to promote drainage and prevent puddles that could freeze in winter.

Management of connections, drainage and electricity

To the right of the condenser, the routing of the insulated refrigerant lines and electrical wiring , protected by a sheath, is visible. We have:

  • respected the bending radii of the refrigerant pipes to preserve the efficiency of the system;

  • properly insulate the lines to limit heat loss;

  • adequate drainage of condensate is provided, often connected to a gravel area or an existing drain;

  • installed and connected the electrical supply according to the Quebec electrical code , with a dedicated circuit breaker and disconnect switch near the unit.

This attention to detail ensures reliable, safe and efficient long-term operation.


Interior integration: comfort and discretion

Although the provided photo primarily shows the outdoor unit, the heart of the customer experience lies inside. In this Brossard home, the discreet, white Gree wall-mounted unit was installed to:

  • to effectively circulate the air in the main living areas;

  • avoid direct air currents on the occupants;

  • to blend harmoniously into the existing decor.

We drilled cleanly through the wall, using a sealed and insulated hole to prevent air or moisture infiltration. The connections are concealed as much as possible for a neat and professional finish.


Results for the customer: comfort, savings and peace of mind

Since installing his Gree wall-mounted heat pump, the homeowner has benefited from several tangible advantages:

  • Four-season comfort : efficient air conditioning in summer and efficient heating in winter, with a stable temperature throughout the service area.

  • Energy bill reduction : Inverter technology allows for savings compared to traditional electric heating and portable air conditioners.

  • Quiet operation : both inside and in the backyard, the noise level is controlled, which is appreciated by the family… and the neighbors.

  • Simple and precise control : the Gree remote control allows you to adjust the temperature, fan speed, operating mode and time programs.

  • Easy maintenance : access to the outdoor unit is unobstructed despite its position under the terrace, simplifying maintenance visits and seasonal inspections.


Why have your Gree heat pump installed by AirGreen in Brossard?

At AirGreen, we support our clients in Brossard and throughout the South Shore at every stage of their project:

  1. Needs and home assessment
    We analyze the layout of your residence, your lifestyle habits and your energy budget.

  2. Recommendation of the right solution
    We offer the Gree wall-mounted heat pump or another suitable system (wall-mounted, multi-zone, central) depending on your situation.

  3. Professional installation
    We pay particular attention to the choice of outdoor location (as here under the terrace), protection against snow, clearances and aesthetic finish.

  4. Commissioning and training
    We thoroughly test the device and show you how to use it, maintain it, and get the most out of it.

  5. After-sales service
    We remain available for maintenance, technical questions and optimization of your system over the seasons.


Do you live in Brossard, Boucherville, Saint-Bruno, La Prairie or elsewhere on the South Shore and are considering installing a Gree wall-mounted heat pump? We would be happy to assess your project and guide you towards the best solution for your home.

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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    The on-site estimate is free and the quote follows within 24 hours.

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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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