Installation of a Gree R-32 wall-mounted heat pump in Fabreville (Laval)
Gree R-32 wall-mounted heat pump installed in Fabreville (Laval) : enclosed path, anti-vibration brackets, electrical disconnection, and gravity evacuation. A clean and efficient HVAC installation by AirGreen.
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Controlled winter comfort and cool summer: an exemplary HVAC installation by AirGreen
In this family home in Fabreville (Laval) , our client was looking for a compact system capable of providing primary heating in spring/fall, reliable backup in the middle of winter, and quiet cooling during heat waves. The house is typical of Laval 's residential areas: vinyl siding, partially above-ground basement, side driveway, high windows on the ground floor. We are proposing a latest generation Gree wall-mounted heat pump with R-32 refrigerant , sized for an open living area on the ground floor and a bedroom upstairs.
Why an R-32 wall-mounted heat pump here?
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High Seasonal Efficiency : Gree R-32 wall units boast higher SEER/HSPF than older R-410A systems while reducing the environmental footprint.
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Extreme cold : recent ranges maintain useful capacity in negative temperatures, which is suitable for the climate of Montreal–Laval–North Shore .
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Compact and discreet : no main duct to modify; perfect for an existing house.
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Program eligibility : depending on the configuration chosen (efficiency and operating range), these units are generally eligible for current Quebec subsidies .
Technical study and site preparation
Interior/exterior survey
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Route : the interior head is positioned upstairs, side facade. We choose an exterior vertical path with a white capping which joins the unit through a single 65 mm drilling.
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Connection length : approximately 3 to 4 m of refrigeration, ideal for limiting pressure losses and facilitating maintenance.
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Condensate management : gravity drain with continuous slope; no pump noise, less maintenance.
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Electrical : Outdoor disconnect box mounted near the condenser, dedicated power supply compliant with Code, circuit breaker sized according to the equipment's current rating.
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Outdoor installation : Condenser on galvanized wall brackets approximately 45–50 cm above the finished floor. This clearance protects against snow accumulation and facilitates winter snow removal.
Site constraints and AirGreen responses
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Vinyl facade and basement window : we chose to anchor in the structural studs and respected the clearances around the opening to avoid any resonance or infiltration.
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Narrow aisle : To save space, we use vertically covered wiring and connections , tight to the wall, with wide bends to optimize refrigerant flow and aesthetics.
Unit sizing and selection
Power and configuration
For a living area of approximately 40–55 m² , we recommend a Gree R-32 wall-mounted heat pump with an output of ≈ 12,000 BTU . This power offers an excellent compromise between temperature increase and dehumidification in air conditioning mode, while maintaining a low noise level .
Selection criteria retained
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Inverter compressor for precise setpoint maintenance.
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Extreme cold operation (negative range) for Laval and the North Shore .
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Multi-stage filtration for better air quality.
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Optimized defrosting limiting cycles and consumption in the middle of winter.
Installation process (1 day, dust-free)
Key steps
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Surface protection : interior tarpaulins, dust protection at the piercing, traffic mats.
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Drilling and sealing : insulated conduit, vapor barrier respected, sealed bulkhead .
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Installation of the inner head : alignment template, level check, blowing test.
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Installation of the condenser : anti-vibration brackets , stainless steel bolts, silent blocks .
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Refrigeration connections : calibrated flares, tightening torque with a dynamometer, deep vacuum (≤ 500 microns) and nitrogen leak test.
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Electrical connections : external disconnection and approved armored cable; labeling on panel.
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Commissioning : checking currents, superheat/subcooling, and warranty registration .
Finish and aesthetics
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White capping matching the woodwork for discreet integration.
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Drip directed away from traffic.
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Tight routing to clear the aisle and avoid collisions.
Measured results and customer experience
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Stable temperature on the ground floor and upstairs, with reduced differences between rooms.
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Low exterior noise level : the machine remains barely audible from the sidewalk.
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Controlled humidity in summer thanks to the intelligent dehumidification mode.
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Consumption : the inverter compressor adjusts the power; the customer is already noticing a reduction in the operating hours of his electric baseboards.
Recommended HVAC maintenance
What we program with each AirGreen client
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Cleaning the filters (once a month in summer, 2–3 months otherwise).
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Gentle washing of the evaporator and rinsing of the condenser in spring.
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Annual inspection : operating pressure, connections, condensate, electrical tightening.
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Winter clearance : keep 30 cm free around the condenser; clear snow from under the unit.
Grants and Compliance
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High-efficiency R-32 wall-mounted heat pumps like this Gree are generally eligible for active grant programs in Quebec, based on capacity and low-temperature performance. We assist our clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore in preparing files (photos, detailed invoices, and certification numbers).
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Electrical compliance : visible exterior disconnection , appropriate circuit breaker rating, panel marking. All our work complies with RBQ requirements and industry standards.
Pitfalls to avoid (AirGreen feedback)
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Condenser too low : In Greater Montreal, a ground-level installation often ends up buried. Raising the unit on brackets protects the unit and ensures efficient defrosting.
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Uncapped connections : Over the seasons, exposed insulation deteriorates. Capping extends its lifespan and improves its appearance.
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Drain without slope : Poor drainage causes seepage and odors. We always draw a continuous slope and validate the flow.
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Undersizing : Choosing 9,000 BTU “to save money” can result in a machine that runs full blast all the time. Here, ≈ 12,000 BTU is the happy medium.
Why choose AirGreen for your installation in Laval and Greater Montreal?
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Local HVAC expertise : we install and maintain heat pumps in Laval, Montreal, Longueuil, North Shore and South Shore with an advisory and measurement approach.
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Aesthetics and durability : careful alignments, galvanized brackets , materials resistant to the Quebec climate.
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After-sales service : maintenance reminders, peak availability, guaranteed parts and labor.
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Transparency : clear quotes (model, BTU , output), end-of-construction photos, assistance with subsidies .
In summary
This Gree R-32 wall-mounted heat pump installation in Fabreville (Laval) showcases clean execution: white vertical capping , wall brackets , compliant electrical disconnection and silent gravity drain . The result: four-season comfort and tangible energy savings , all with a finish that respects the local residential architecture. For a similar project in Laval, Montreal, Longueuil, North Shore or South Shore , our team travels, sizes and installs according to the rules of the art .
The job tools
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.
How the job unfolds
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 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.
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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).