Installation of an Elios wall-mounted air conditioner in Rosemont–La Petite-Patrie
AirGreen installs an Elios wall-mounted air conditioner in Rosemont–La Petite-Patrie. Comfort, efficiency, and a meticulous finish for professional HVAC service in 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.
Comfort and performance at the heart of a residential project
At AirGreen , we recently completed an Elios wall-mounted air conditioner installation in an apartment in the Rosemont–La Petite-Patrie neighborhood, an area of Montreal where residential buildings often combine modern interiors with functional layouts. In this project, the client's goal was simple: to benefit from optimal thermal comfort while enjoying a reliable, energy-efficient unit that integrated well into their living space.
Choosing the Elios wall-mounted air conditioner
The Elios unit installed is one of the latest models we offer for Montreal apartments. This type of equipment is particularly appreciated for:
-
Its compactness and discreet aesthetics.
-
Its quiet operation, essential in urban environments.
-
Its efficient cooling capacity is suitable for medium-sized areas.
-
Its modern technology ensures good energy efficiency and simplified maintenance.
The digital display integrated into the front allows clear control of the interior temperature, a practical and stylish advantage.
Installation process
In this Rosemont–La Petite-Patrie project, we took care of the installation of the interior wall unit located in the main living room.
Some technical points stood out:
-
Working height : the unit was fixed at approximately 2.10 m from the floor, ensuring good air diffusion in the room.
-
Wall drilling : a single discreet passage was made behind the appliance to connect the refrigeration lines and the electrical wiring.
-
Line routing : the white PVC cladding blends perfectly with the wall color, ensuring a clean and discreet finish.
-
Condensate management : drainage is gravity-fed, which simplifies maintenance and reduces the risk of breakdown.
-
Additional accessories : installation on a solid wall bracket, with particular care taken with alignment and fixing.
Since access to the home's electrical equipment was close by, the connections could be made quickly and in full compliance with safety standards.
Comfort adapted to urban life
The Elios wall-mounted air conditioner provides an ideal solution for Montreal apartments and condos.
Among the benefits observed by our client:
-
Quick cooling of rooms on hot days.
-
Reduced power consumption thanks to inverter mode.
-
Simple control via the easily accessible wall-mounted remote control.
-
A harmonious integration into the interior decor.
AirGreen Expertise: Reliability and Finish
Our teams pay particular attention not only to the technical efficiency but also to the aesthetics of each project. In this specific case, the proximity of wooden shelves and decorative elements required a discreet and precise installation, without altering the visual harmony of the room. The client particularly appreciated our attention to detail and the speed of execution.
Maintenance Tips
To extend the life of your wall-mounted air conditioner and ensure optimal performance, we recommend:
-
Clean the filters every two to three months.
-
Check the drain flow at the beginning of each season.
-
Schedule an annual HVAC service with our technicians for a complete inspection and thorough cleaning.
-
Use “energy saving” modes to optimize electricity costs.
Subsidies and energy efficiency
Although wall-mounted air conditioners are not always eligible for provincial heat pump subsidies, choosing a modern model like the Elios remains a cost-effective decision thanks to its energy efficiency and reduced summer air conditioning costs.
Conclusion
With this installation of an Elios wall-mounted air conditioner in Rosemont–La Petite-Patrie , AirGreen once again demonstrates its commitment to offering reliable, aesthetic and efficient HVAC solutions adapted to the specific needs of residents of Greater Montreal.
Each project is unique, and our mission remains the same: to improve the comfort of our customers while respecting the best technical and environmental practices.
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).