Installation of a Gree wall-mounted heat pump in Sainte-Julie
AirGreen installed a Gree wall-mounted heat pump in Sainte-Julie. A powerful and discreet HVAC solution, ideal for homes on the South Shore, Montreal, Laval, Longueuil, and the North Shore.
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Four-season comfort for a South Shore home
At AirGreen , we recently installed a Gree wall-mounted heat pump in a residence located in Sainte-Julie , on the South Shore of Montreal. The owner was looking for an efficient and discreet solution to cool his home in the summer and heat it during the winter, while taking advantage of the grant programs available for this type of device.
The Gree wall-mounted heat pump proved to be a wise choice: a perfect balance between performance, sleek design and energy efficiency, all with an installation that integrates perfectly into the interior of the home.
Technical characteristics of the installed unit
The device chosen by the customer is a Gree wall-mounted heat pump , known for its reliable technology and durability.
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Capacity : 12,000 BTU, ideal for the main room of the house.
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Inverter Technology : Allows for precise adjustments, reducing temperature variations and improving efficiency.
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Seasonal efficiency : SEER greater than 20, providing substantial savings on electricity bills.
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Efficient heating mode : designed to operate down to -25°C, essential for Quebec winters.
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Quiet operation : the wall head blends into the room without compromising acoustic comfort.
This equipment is generally eligible for provincial and federal grant programs (notably Hydro-Québec and the federal energy-efficient renovation program).
The particularities of the installation
The installation presented some challenges related to the layout of the house:
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Indoor positioning : the unit was fixed on a central wall, close to a window, ensuring even diffusion of air in the space.
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Discreet capping : the refrigeration ducts have been clad in dark gray capping to blend in with the wall and window frame.
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Condensate management : gravity drainage was preferred, simplifying future maintenance and minimizing the risk of breakdown.
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Outdoor installation : the condenser was strategically placed on a concrete slab, away from traffic areas, to limit noise and ensure easy access for periodic maintenance.
This approach ensures aesthetic integration and long-term reliability .
Immediate comfort after installation
Upon commissioning, the owner noted:
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A rapid reduction in indoor temperature on a hot day.
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Stable and constant comfort in heating mode, without unpleasant variations.
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A reduction in noise level , even during intensive operation.
The wall-mounted remote control provides precise and intuitive control, while the discreet LED display on the unit continuously confirms the set temperature.
The advantages of a Gree heat pump for a South Shore home
Choosing a Gree wall-mounted heat pump means benefiting from:
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Significant energy savings thanks to high seasonal performance.
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A modern and minimalist design , which harmonizes with different interior decoration styles.
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Four-season comfort , both in air conditioning and heating.
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A solid warranty , generally 10 years on parts and the compressor.
For residents of Sainte-Julie and the South Shore, this technology represents a smart choice, both for comfort and for the resale value of the home.
AirGreen expertise: a turnkey service
Our team ensures to deliver a complete and professional service to each installation:
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Assessment of the actual thermal needs of the house.
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Selecting the device best suited to the spaces.
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Installation carried out in accordance with current HVAC standards.
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Complete performance testing before delivery to the customer.
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Detailed explanations for simple and effective maintenance (cleaning filters, frequency of professional maintenance, checking ducts).
Thanks to this rigor, we guarantee immediate comfort and optimal durability for each project.
Conclusion
With this Gree wall-mounted heat pump installation in Sainte-Julie , the owner now benefits from a high-performance, energy-efficient and discreet system, adapted to the climatic realities of Quebec.
At AirGreen , we offer more than just an installation service: we support our clients to transform each project into a sustainable and comfortable solution, whether in Montreal, Laval, Longueuil, on the North Shore or the South Shore.
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).