Project

Gree wall-mounted heat pump installation in Chomedey, Laval

In Chomedey, Laval, AirGreen installed a Gree Pular wall-mounted heat pump on a condo balcony, using a stable and discreet aluminum bracket. This solution provides quiet air conditioning in the summer, economical heating in the shoulder seasons, and optimal comfort adapted to Laval's climate.

By AirGreen Climatisation & Chauffage Admin7 min read
Gree wall-mounted heat pump installation in Chomedey, Laval
Gree wall-mounted heat pump installation in Chomedey, Laval
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.

For this project in Chomedey, Laval , our clients, the co-owners, wanted to modernize the comfort of their upstairs condo while respecting the constraints of a high balcony and the condominium rules. We proposed the installation of a Gree Pular wall-mounted heat pump , a compact, quiet, and highly efficient system for condo-type units.


A typical condo setting in Laval

The condo is located in a red brick building, with balconies overlooking a large parking lot and a wooded area – a common configuration in several parts of Laval. The clients' requirements were clear:

  • Enjoy efficient air conditioning during summer heatwaves;

  • Add an economical auxiliary heater to reduce the use of electric baseboard heaters;

  • Finding a solution compatible with a condominium balcony : no unit suspended from the wall, limited noise, clean and safe installation;

  • Minimize the aesthetic impact on the building, both for themselves and for the neighbors.

After analyzing the area to be air-conditioned and the configuration of the rooms, we recommended a Gree Pular wall-mounted heat pump of approximately 12,000 BTU , perfectly sized for the main living area of ​​the condo (living room, dining room, open-plan kitchen).


The solution: a Gree Pular wall-mounted heat pump

The Gree Pular is a new generation Inverter wall-mounted heat pump, designed to offer:

  • Fine modulation of power, for stable comfort and reduced consumption;

  • A very low noise level, ideal for condominium buildings;

  • Excellent energy efficiency, both in air conditioning and heating;

  • A new generation refrigerant, more efficient and more environmentally friendly than older generations of systems.

Inside the apartment, the Gree wall-mounted head was strategically installed to optimize airflow in the main room, while respecting the furniture layout and finishes. The result: a homogeneous temperature distribution, without direct drafts on the occupants.


An installation on a high balcony: stability, safety and silence

The most challenging aspect of this project in Chomedey was installing the outdoor unit on the condo's balcony . The photo clearly shows the Gree unit mounted on a raised aluminum bracket , securely attached to the balcony floor.

Here are the main technical points of this configuration:

  • Self-supporting aluminum stand : robust and corrosion-resistant, it allows the unit to be raised to facilitate water drainage, maintain sufficient clearance under the device and prevent any stagnation of moisture on the slab.

  • Precise level control : A leveling rod placed on the unit during installation ensures perfect leveling. This reduces vibration, improves compressor operation, and protects the system's longevity.

  • Load distribution on the slab : the feet of the support are equipped with pads and suitable fixings to distribute the weight without damaging the surface of the balcony.

  • Respect for guardrails and passage : the unit is positioned against the brick, at an adequate distance from the guardrail, leaving a comfortable passage for occupants and allowing for simple maintenance.

  • Condensate and duct management : Refrigerant lines and the condensate drain pass through the brick wall to the interior, with a clean, sealed, and insulated penetration. Everything is carefully capped to protect the pipes and maintain the aesthetics.

Below, we can see the AirGreen truck parked near the building, demonstrating our presence on site and the logistical organization necessary for this type of high-rise construction site.


Performance and comfort in the Laval climate

In Laval, the temperature variations are significant:

  • Hot summers with several heat waves;

  • Harsh winters, with periods of sustained cold;

  • Inter-seasons where we frequently alternate between heating and air conditioning.

The Gree Pular wall-mounted heat pump perfectly addresses these realities:

  • In summer , it provides fast and quiet air conditioning, even in an open area exposed to the sun.

  • In mid-season , it becomes a very economical heating source, allowing for a significant reduction in the use of electric baseboard heaters.

  • In winter , it acts as a supplementary heating source, particularly effective during periods of moderate cold, which reduces the annual electricity bill.

Thanks to inverter technology, the machine doesn't operate in an on/off fashion: it adapts its power to the actual demand. This translates to:

  • Fewer temperature variations;

  • More linear and better controlled consumption;

  • Generally quieter and more durable operation.


An installation that complies with the condominium's requirements

Condominium buildings often impose strict rules regarding outdoor equipment. For this project in Chomedey, we paid particular attention to:

  • The visual discretion of the outdoor unit, positioned near the patio door, aligned with the railing;

  • The noise level , by choosing a Gree heat pump known for its low noise and ensuring that the unit does not transmit vibrations to the structure;

  • Safety : no element protrudes dangerously from the balcony, and the passage remains clear for both occupants and those involved.

Our installers also took the time to explain to the clients the best practices for use in a condominium: minimum clearance around the unit, visual maintenance, natural defrosting in winter, and communication with the condominium association when necessary.


AirGreen's support from start to finish

As with all our projects in Greater Montreal, we handled this Gree heat pump project in Chomedey completely:

  1. Analysis of the need and the building : area to be covered, orientation of the rooms, constraints of the balcony, rules of the co-ownership.

  2. Recommendation of a suitable solution : choosing a Gree Pular wall-mounted heat pump of appropriate capacity rather than an oversized or central system, which is poorly suited to the context.

  3. Professional installation :

    • Aluminum bracket fixing;

    • Refrigeration connection with vacuuming and leak testing;

    • Electrical connection on a dedicated circuit;

    • Complete commissioning.

  4. Occupant training : use of the remote control, operating modes (cooling, heating, dehumidification, auto), maintenance of indoor filters and visual checks to be carried out each season.

Our clients now have a reliable, discreet and very comfortable system, perfectly suited to their Chomedey condo and the Laval climate.


Do you own a condo in Laval and are considering a Gree heat pump?

Whether you are in Chomedey, Duvernay, Fabreville, Vimont or elsewhere in Laval , we can assist you in choosing and installing a Gree wall-mounted heat pump on a balcony or slab.

We take into account:

  • The structure of your building;

  • The constraints of co-ownership;

  • Your actual heating and air conditioning needs;

  • Your budget and your energy saving goals.

Contact us for a free evaluation and quote . At AirGreen, we put our expertise at your service, with clean, safe, and sustainable installations.

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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    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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