Job sheet · Project

Installation of a Gree central heat pump in Brossard

In Brossard, AirGreen replaced an old air conditioner with a Gree central heat pump, installed on a wall bracket above the floor to protect it from snow and optimize air circulation. The result: year-round comfort throughout the house, energy savings, and a discreet system designed for the Greater Montreal climate.

By AirGreen Climatisation & Chauffage Admin6 min read
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In Brossard, on Montreal's South Shore, a family wanted to modernize their heating and air conditioning system. Their old outdoor unit was noisy, energy-inefficient, and poorly suited to Quebec's harsh winters.

We therefore proposed the installation of a Gree central heat pump , a complete solution that provides heating and air conditioning through existing ducts, while reducing energy consumption.


The project in brief

  • Location: Brossard, South Shore of Montreal

  • System type: Central heat pump (outdoor condenser connected to a ducted system)

  • Brand: Gree

  • Model: Gree Flexx R32 central heat pump, approximately 3 tons

  • Use: Primary heating in the shoulder seasons, supplemental heating in winter, central air conditioning in summer

The main objective was to replace an old air conditioner with a modern solution capable of heating and cooling the entire house through the existing ventilation system.


Why a Gree central heat pump for this house in Brossard?

1. One system for all seasons

With a Gree central heat pump, customers benefit from:

  • Efficient heating through the same ducts as the air conditioning;

  • Uniform comfort throughout all rooms, rather than room by room;

  • Automatic switching between heating and air conditioning depending on the outside temperature.

This configuration is ideal for a typical single-family home in Brossard, where a system that is simple to use and comfortable at all times is desired.

2. Energy efficiency and long-term savings

The Gree Flexx R32 series is distinguished by:

  • An inverter compressor that modulates power according to actual needs;

  • R-32 refrigerant is more efficient and less energy-intensive than older refrigerants;

  • A stable heating capacity down to largely negative temperatures, which reduces reliance on electric furnace or baseboard heaters.

The result: better controlled electricity bills , without compromising on comfort, even in cold weather.

3. Reliability and durability

The design of this Gree condenser emphasizes durability:

  • Gold-plated finned heat exchanger (anti-corrosion treatment) visible in the photo, better protected against moisture and salt;

  • Robust bodywork, designed to withstand shocks, freezing and thawing cycles;

  • Components designed for prolonged operation in harsh climatic conditions.

For a climate like that of Greater Montreal, this robustness is essential.


Outdoor installation details: stability, clearance, and snow protection

The outdoor unit was installed along a brick wall on the side of the house, in a relatively narrow but unobstructed space. Several technical choices were made to optimize long-term performance.

1. Installation on a wall bracket above the floor

Rather than placing the unit on the ground, we have:

  • Fixed to a steel wall bracket securely anchored in the concrete foundation;

  • Raised to a sufficient height to:

    • protect it from snow accumulation ;

    • Facilitate the flow of defrost water;

    • Reduce the risk of damage caused by ice or debris.

We can also observe below the unit the trace of water flow from the defrosting cycles in winter, proof that the height is well calculated to prevent ice from forming directly in the bottom of the condenser.

2. Management of clearances and noise

Even in a side passage, we always respect the clearances recommended by the manufacturer:

  • Free space around the fan to ensure good air circulation ;

  • Adequate distance from walls and obstacles (such as the visible gas cylinder nearby) to ensure safety and limit sound resonance;

  • Orienting the unit in such a way as to reduce the transmission of noise to neighbors and resting areas of the house.

The axial fan, combined with Gree's inverter technology, allows for particularly quiet operation , even in the evening.

3. Routing of refrigeration lines and power supply

On the left side of the photo, you can see the routing of the refrigeration lines and communication cables , carefully guided to the indoor unit:

  • Use of suitable conduits and ducts to protect the pipes;

  • Adequate insulation of the lines to limit heat loss;

  • Electrical connection on a dedicated circuit, compliant with the Quebec Electrical Code, with a circuit breaker calibrated according to the power of the condenser.

We always ensure that each installation complies with safety standards and manufacturer's recommendations.


Integration into the existing internal system

This Gree central heat pump is connected to:

  • An air manager (or electric furnace) located inside;

  • A network of air ducts distributing heating and air conditioning to all rooms.

The installation allows:

  • To preserve the existing conduit infrastructure;

  • Adding centralized control via thermostat , often programmable or intelligent;

  • To improve overall comfort without major work in the house.

In many similar projects, we replace a simple central air conditioner with a central heat pump. This allows the client to benefit from high-efficiency heating without having to renovate the entire system.


Results for Brossard customers

After commissioning and complete performance testing, the owners were able to observe:

  • A rapid temperature increase on cool evenings;

  • Uniform air conditioning in all areas served by the ducts during the summer;

  • Quieter operation than their old outdoor unit;

  • The possibility of reducing their energy consumption , while increasing their comfort.

By choosing a Gree central heat pump installed by AirGreen, they equipped themselves with a modern, durable system adapted to the winters of the South Shore.


AirGreen's expertise at the service of your comfort

At AirGreen, we support our clients in Brossard and throughout Greater Montreal at every stage:

  1. Analysis of the building and needs : surface area, insulation, type of existing system, usage habits.

  2. Selection of the most suitable Gree equipment (capacity in tonnes, model, control options).

  3. Professional installation : robust supports, clearances respected, secure cabling and well-managed drainage.

  4. Complete commissioning : heating and air conditioning tests, pressure checks, explanation of operation to the customer.

  5. After-sales service : preventive maintenance, coil cleaning, performance verification season after season.

If you live in Brossard, the South Shore, Laval or any area of ​​Greater Montreal and you want to replace an old central air conditioner with a more efficient Gree heat pump , our team is here to advise you.


AirGreen – Your Gree central heat pump specialist in Greater Montreal.

Your numbers

The job tools

Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.

Size checkYour electric furnace, 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.

    The steps

    How the job unfolds

    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 ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.

    1. The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
    2. The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
    3. Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
    4. The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
    5. The outdoor unitOn a level base, raised above the snow, with free space all around.
    6. The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
    7. Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
    8. Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
    9. The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
    The tour

    What we check on a job like this one

    Each number is a point we check on site. Switch between summer and winter to watch air and heat move.

    Generic diagram: central heat pump, indoor module and ducts

    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. It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.

    2. The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.

    3. A shut-off switch near the outdoor unit isolates it safely for service.

    4. Sitting on the indoor module, it moves heat between the house air and the refrigerant.

    5. Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.

    6. Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.

    7. It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.

    8. It runs the heat pump and the backup heat. It must be compatible with the installed system.

    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
    Maintenance

    Good habits, once the unit is in place

    Six simple habits that keep the unit going. Your list stays on this device.

    0 / 6 checked
    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.

    • Check the indoor module's filter.
    • Clear winter debris from the outdoor unit.
    • Test cooling before the heat arrives.
    For your project

    The right pages, at the right time

    True or false

    Four statements: true or false?

    It all comes down to details you have just seen.

    1. A central heat pump uses the house's ducts.

    2. In extreme cold, electric backup heat can take over.

    3. The filter only gets changed when the unit breaks down.

    4. You can reuse the old unit's size without checking.

    Frequently asked questions

    What people ask us about this kind of work

    11 questions
    Can I keep my current ducts?
    Often, yes: the central heat pump connects to the existing ducts. We check their condition and size during the estimate.
    What happens in extreme cold?
    The indoor module (furnace or air handler) works with the central heat pump and takes over in extreme cold.
    Furnace, air handler, ducted: what is the difference?
    The furnace or air handler is the indoor module of the central system. A ducted system hides in the ceiling: all you see are small supply grilles.
    Are there grants?
    Depending on the equipment and your situation, assistance programs may apply. AirGreen checks the exact combination before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city. See permits and by-laws, and we check for your address.
    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.
    Will my current thermostat work?
    Not always: the thermostat has to run the heat pump and the backup heat. We check compatibility during the estimate.
    Central or wall units: which one?
    If the house has ducts in good shape, a central system heats and cools every room at once. Without ducts, wall units or a multi-zone are often simpler. We compare on site.
    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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    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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