Installation of a Tosot wall-mounted heat pump in a condo in Plateau-Mont-Royal
Installation of a Tosot wall-mounted heat pump in Montreal (Plateau-Mont-Royal). AirGreen ensures four-season comfort with an energy-efficient and grant-eligible HVAC solution.
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.
An installation project that combines comfort and aesthetics in a typical Montreal building
As part of a residential project located in Plateau-Mont-Royal , our AirGreen teams recently installed a Tosot wall-mounted heat pump in a charming condo. The red brick building, typical of the neighborhood, presented space and aesthetic preservation constraints that we were able to address with precision and efficiency.
This new wall unit enhances the interior comfort of occupants by offering them an energy-efficient heating and air conditioning solution perfectly adapted to Montreal's climatic variations.
Project background
The client, the owner of a condo located on a quiet street in the Plateau, wanted to replace a heating system based exclusively on hot water radiators with a more modern and economical solution. The objectives were clear:
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Ensure four-season comfort , especially during summer heatwaves and extreme winter cold.
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Reduce energy consumption with an approved system eligible for grant programs.
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Install a discreet device, in harmony with the interior architecture and woodwork of the home.
Technical details of the installed device
The unit chosen is a Tosot residential range wall-mounted heat pump , known for:
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A capacity of 12,000 BTUs , ideal for air conditioning or heating a medium-sized condo space.
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High seasonal efficiency ( SEER greater than 20 , HSPF2 adapted to the Quebec climate ).
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Reliable performance down to -25°C , an essential criterion for eligibility for subsidy programs such as LogisVert or Greener Homes .
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Quiet operation, guaranteeing the peace and quiet sought by occupants.
Installation process
Our specialized technicians carried out the installation in compliance with all HVAC industry standards:
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Optimal positioning : the indoor unit was fixed above the large living room windows, allowing for even air diffusion.
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Discreet through-hole behind the device, to limit the visual impact.
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Refrigeration and electrical conduits concealed with exterior capping adapted to the brick facade.
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Gravity drainage of condensates, thus avoiding the addition of a pump and reducing the risk of additional maintenance.
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Checking pressures, vacuum and leak tightness before commissioning.
Constraints and solutions provided
The early 20th-century building featured massive interior woodwork and space heaters that are still in place. To preserve the architectural character:
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The unit was installed without altering the existing wood moldings .
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The intervention was planned in coordination with the owner to minimize dust and protect the finishes.
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The exterior passage was built on a secondary wall that was not very visible , in order to comply with the co-ownership regulations on the aesthetics of the facades.
Immediate results and benefits
As soon as it was switched on, the customer was able to see:
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Immediate freshness in the condo despite a humid summer day.
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A minimal noise level , perfectly suited to an urban residential environment.
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The prospect of reducing heating costs during the winter thanks to the high energy efficiency of the heat pump.
Grants available
This type of device, thanks to its energy efficiency and certification, may qualify for financial assistance:
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LogisVert Program (Quebec) .
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Federal Greener Homes Program .
At AirGreen, we support our clients in all administrative procedures, from eligibility verification to document submission.
Why choose AirGreen for your HVAC installation in Montreal?
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Recognized local expertise in the Plateau-Mont-Royal and Greater Montreal areas.
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Certified technicians, respecting safety and performance standards.
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A customer-centric approach: personalized advice, post-installation follow-up, and assistance with grants.
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A long-term commitment thanks to our regular HVAC maintenance services, extending the life of the equipment.
Conclusion
This installation of a Tosot wall-mounted heat pump in a condo in Plateau-Mont-Royal perfectly illustrates the added value of choosing a specialized team like AirGreen: discreet work, respectful of aesthetics , while guaranteeing optimal energy comfort .
Our customers benefit from a pleasant indoor environment, summer and winter, and peace of mind regarding the performance of their system.
How it goes, from the first call to the end
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.
And 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.
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.
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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?
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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).