Installation of a Midea wall-mounted heat pump in Chomedey
Installation of a Midea wall-mounted heat pump in Chomedey. AirGreen provides four-season comfort, energy efficiency, and subsidies for Laval and Greater Montreal.
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.
A residential project in a bright apartment
In the Chomedey neighborhood of Laval , a customer wanted to replace their old portable air conditioning system with aMidea wall-mounted heat pump . The goal was clear: improve four-season comfort, reduce energy bills, and take advantage of subsidies available for high-efficiency equipment.
Customer expectations
The client lived in a spacious and bright apartment facing southwest, which caused intense summer heat. He was looking for a solution:
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Discreet and quiet , for everyday comfort.
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Efficient in heating , to eliminate dependence on electric baseboards.
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Eligible for subsidies thanks to its energy efficiency.
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Quick to install , without heavy work that would have disrupted the interior layout.
Features of the installed Midea heat pump
The chosen machine had the following advantages:
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12,000 BTU capacity , ideal for effectively covering a living room and adjoining rooms.
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Heating performance down to -25°C , an essential criterion for Laval winters.
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Energy efficiency (SEER and HSPF compliant with Energy Star standards) , guaranteeing significant savings.
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A sober and compact design , facilitating aesthetic integration into the white wall of the apartment.
Installation Steps
Preparation and fixing
Our technicians first determined the optimal location for the wall-mounted fan, in the center of the living room wall. This positioning ensures uniform air diffusion , while preserving the room's brightness and living space.
The unit was securely mounted, perfectly aligned to complement the apartment's aesthetic. A secure ladder and professional tools allowed for efficient and safe work.
Passage of connections and drilling
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The drilling of the wall was carried out with care to allow the passage of refrigeration and electrical connections .
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A discreet capping protects the pipes and visually integrates with the interior finish.
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The condensate evacuation was designed using gravity , avoiding any dependence on a lifting pump.
Commissioning
After fixing and connecting, the following steps were performed:
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Vacuuming of the pipes to ensure the sealing of the refrigeration circuit.
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Electrical checks and machine calibration.
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Complete testing in air conditioning and heating mode to ensure optimal operation.
Results obtained
Upon startup, the customer noted:
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An immediate drop in indoor temperature in summer, without annoying noise.
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Stable and even heat in heating mode, reducing the use of baseboards.
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A significant improvement in the quality of life , thanks to a constant and comfortable temperature.
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The certainty of obtaining government subsidies for this installation, reducing the net cost of the project.
AirGreen expertise in Laval
At AirGreen, we support each customer from machine selection to final commissioning . Our added value lies in:
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A personalized analysis of the needs of each accommodation.
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A professional HVAC installation , respecting all standards.
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An aesthetic integration that respects the living space.
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Complete support for grants available in Laval, Montreal, Longueuil, on the North Shore and the South Shore.
Conclusion
This installation of a Midea wall-mounted heat pump in Chomedey illustrates the importance of precise work and choosing the right equipment. The customer now benefits from optimal comfort, reduced energy bills, and a high-performance system in all seasons.
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).