Installation of a Gree wall-mounted heat pump on a condo balcony in Laval-des-Rapides
AirGreen installed a Gree Inverter wall-mounted heat pump on the balcony of a condo in Laval-des-Rapides. Elevated mounting, discreet ductwork, and compliance with condominium regulations ensure quiet, economical, four-season comfort for the owner.

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.
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.
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.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
In this project, we were called to Laval-des-Rapides, to a typical brick condo building, to improve the comfort of a co-owner who suffered from both the summer heat and the winter cold. The main constraint: everything had to be done on a relatively narrow concrete balcony, with neighbors above, below, and on either side.
Our solution: the installation of a high-efficiency Gree Inverter wall-mounted heat pump , perfectly suited to the realities of a high-rise condo.
Context: a narrow balcony, lots of neighbors, zero compromises
In a multi-unit residential building like those in Laval-des-Rapides, every HVAC intervention must reconcile:
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comfort inside the condo ;
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compliance with condominium regulations ;
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noise discretion for the neighbors;
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Safety on a balcony is often limited in depth.
The owner wanted a system capable of efficiently cooling the main living area in summer while providing reliable supplemental heating in winter , to reduce his reliance on the existing system and electricity during periods of extreme cold.
Choosing the Gree wall-mounted heat pump
We recommended a Gree Inverter single-zone wall-mounted heat pump of approximately 12,000 BTU , ideal for this type of condo:
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Inverter technology : the compressor continuously modulates its power, which improves comfort, reduces temperature variations and decreases electricity consumption.
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Four-season heating mode : the system is designed to continue heating efficiently even when the mercury plunges well below zero, an unavoidable reality in Laval.
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Reduced noise level : a key point in co-ownership, where an excessively noisy unit can quickly create tension between neighbors.
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Compact size : the Gree condenser's dimensions allow for installation on a balcony while respecting the necessary clearances around the unit.
Inside, the wall-mounted unit, installed in the main living area, ensures even air distribution and excellent daily temperature control.
An optimized installation on a concrete balcony
The photo clearly shows the heart of the project: the Gree condenser installed on the balcony , placed on a raised metal support.
Elevated support and stability
We mounted the unit on a galvanized steel support with adjustable legs, allowing:
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to remove the machine from the concrete floor,
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to facilitate the flow of water (rain, snowmelt, condensation),
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to limit the accumulation of snow around the condenser in winter,
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to reduce vibrations transmitted to the structure using anti-vibration pads .
This support is securely anchored to withstand winds and mechanical stresses, while respecting the structural constraints of the balcony.
Strategic positioning
The condenser is placed against the side concrete slab , so that:
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maintain good air circulation at the front and sides ;
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avoid blowing directly towards the neighbors or towards the balcony relaxation area;
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clear the usable space in front of the patio door.
We consistently adhere to the clearances recommended by Gree to ensure optimal performance and avoid any hot air recirculation.
Management of refrigeration connections and aesthetics
The refrigeration pipes, cables, and drain are grouped together in a white conduit that runs along the brick wall. This solution offers several advantages:
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mechanical protection of the tubing against impacts;
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better weather resistance;
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Neat visual presentation, essential in co-ownership;
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Easy access for any future maintenance.
The cable channel enters the wall near the window to join the interior head, in order to minimize the visual impact inside the condo.
Safe power supply
To the left of the condenser, an external electrical box serving as a disconnect switch is visible. We connect the heat pump to a dedicated circuit from the condo's electrical panel, in accordance with the applicable electrical code.
This disconnect switch allows the power supply to be cut off quickly during maintenance or interventions, guaranteeing the safety of occupants and our technicians.
Four-season comfort in Laval-des-Rapides
With this Gree wall-mounted heat pump, the co-owner now benefits from true four-season comfort :
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In summer : the air conditioning maintains a comfortable living temperature, even during heat waves on Laval Island. Inverter technology prevents sudden on/off cycles; the temperature is more stable and the atmosphere more comfortable.
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In mid-season : rather than turning on the building's central heating, the Gree heat pump takes over for gentle and economical heating.
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In winter : the machine continues to provide heat even at very low outside temperatures, reducing the electricity bill and relieving the main system.
The result: less temperature variation , improved quality of life and better management of energy costs .
The specific characteristics of co-owned facilities
Each condominium heat pump project requires careful coordination :
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Verification of the condominium association's regulations (authorized location of outdoor units, acceptable noise level, aesthetics, color of the gutters, etc.);
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Respect for immediate neighbors (balconies above and below);
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Minimizing noise and vibration ;
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Safety management during construction work (traffic in corridors, elevators, parking).
In this project in Laval-des-Rapides, we worked upstream with the co-owner to ensure that the installation fully complies with the building rules , both visually and audibly.
The AirGreen approach: a turnkey service
At AirGreen, we support our clients at every stage of the project:
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Analysis of the condo and balcony
Survey of dimensions, assessment of orientation, access and structural constraints. -
Selection of suitable Gree equipment
Power sizing (BTU), choice of options (cold/heating heating, noise level, control features). -
Coordination with the condominium association
If necessary, we help the client prepare the technical documents for the syndicate (product sheet, installation diagram, sound characteristics). -
Professional installation
Installation of the condenser on a raised support, routing of the ducts and drain, electrical connection, commissioning tests. -
Explanation to the owner
We take the time to demonstrate the operating modes , best practices for use and maintenance tips to extend the life of the heat pump.
Considering a Gree heat pump for your condo in Laval or Montreal?
Whether you are in Laval-des-Rapides, Chomedey, Montréal-Nord, Rosemont or on the South Shore , a Gree wall-mounted heat pump properly installed on a balcony can transform your daily comfort, without compromising the aesthetics of the building or the tranquility of your neighbors.
We put our expertise in residential HVAC at the service of condominium owners in the greater Montreal area, with installations that are meticulous, durable and compliant with current standards.
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.
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.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- 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.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
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.
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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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.
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.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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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).
