Installation of a Haier wall-mounted heat pump in Laval-des-Rapides
Installation of a Haier wall-mounted heat pump in a duplex in Laval-des-Rapides. AirGreen offers comfort, energy efficiency, and grants available for Greater Montreal.
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Modernize the comfort of a Laval duplex with a high-performance heat pump
In this project in Laval-des-Rapides , our AirGreen technicians were called upon to install a Haier wall-mounted heat pump in the stairwell of a duplex. The client's objective was twofold: to improve thermal comfort in this area, which is often subject to temperature fluctuations, and to reduce energy costs by replacing an old, energy-intensive portable system.
The particularities of the location
Installing a wall unit in a stairwell involves several technical challenges:
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Significant working height : installation required the use of safety equipment to reach the upper part of the wall.
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Air distribution : it was necessary to ensure that the air flow, blowing from top to bottom, was well balanced between the different levels of the house.
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Drainage management : due to the absence of a direct gravity outlet, our technicians have integrated a compact condensate pump , allowing efficient water evacuation.
Why choose a Haier wall-mounted heat pump?
The Haier brand is increasingly establishing itself on the Quebec market thanks to reliable, affordable units equipped with modern features:
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Energy Star certified energy efficiency , ensuring reduced electricity consumption.
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Low temperature heating capacity (down to -20°C depending on the model), ideal for our Laval winters.
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Quiet operation that guarantees optimal comfort, even in a stairwell where noise resonates more easily.
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Sleek and discreet design , perfectly integrated into the interior aesthetic.
Key steps of installation
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Preparing the wall : marking out the holes and installing the wall mounting plate.
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Drilling and passing refrigerant lines : routing to the outside while respecting sealing and insulation standards.
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Installation of the capping : the electrical and refrigerant conduits were protected by a discreet and durable white cover.
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Connection to the electrical panel : addition of a dedicated line and appropriate circuit breaker, ensuring maximum safety.
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Commissioning : Our technicians performed a vacuum and refrigerant charge before making final adjustments.
A result that exceeds expectations
The customer immediately noticed:
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Increased comfort throughout the home, with more even air circulation.
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An anticipated reduction in your energy bill , thanks to the superior efficiency of the heat pump.
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Simplified management via the programmable remote control and automatic modes.
Grants available
This installation is eligible for the LogisVert and Hydro-Québec grant programs , allowing the customer to significantly reduce their initial investment. At AirGreen, we support our customers through all administrative procedures to maximize their savings.
Why trust AirGreen?
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RBQ certified expertise and proven experience in the installation of wall-mounted heat pumps in Laval, Montreal, Longueuil, North Shore and South Shore.
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Complete turnkey service : from quote to commissioning.
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Extended warranty : parts and labor covered for complete peace of mind.
Conclusion
This installation of a Haier wall-mounted heat pump in Laval-des-Rapides perfectly illustrates the importance of adapting HVAC solutions to the specific constraints of a home. Thanks to this upgrade, our client now benefits from four-season comfort, reduced energy costs, and modern, reliable, and durable equipment.
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).