Installation of a Venstar wall-mounted air conditioner in Saint-Laurent
AirGreen installs a Venstar wall-mounted air conditioner in Saint-Laurent. An efficient and discreet HVAC solution for optimal comfort in Greater Montreal.
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The job on one screen
The article, chapter by chapter
A residential installation project optimized for comfort
At AirGreen , we understand that every wall-mounted air conditioner installation must be designed with space, occupant comfort, and equipment durability in mind. We were recently commissioned to install a Venstar wall-mounted unit in a home in the Saint-Laurent area of Montreal . This project perfectly illustrates the importance of specialized expertise and careful planning.
Project background
The client wanted to improve the thermal comfort of their condo while reducing their reliance on basic electric heating. The chosen unit, a Venstar wall-mounted air conditioner , offered good performance for summer cooling needs and maintaining comfort during the mid-season. Since the apartment was located near a large window, it was necessary to plan a discreet refrigeration pipe route, without compromising the aesthetics of the room.
The particularities of the installation
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Equipment Type : Residential Wall-Mounted Air Conditioner
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Brand : Venstar
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Location : Saint-Laurent, Montreal
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Mounting : interior head fixed to the upper part of the wall, near the window
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Refrigeration path : direct wall outlet, with reduced elbows to minimize pressure losses
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Condensate management : gravity drainage to the outside, avoiding the addition of an additional pump
The unit was installed approximately 2.2 meters from the floor, ensuring optimal diffusion of fresh air into the room while avoiding direct drafts for the user.
Challenges encountered and solutions provided
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Limited space near the window : The air conditioner had to be mounted in close proximity to the window frame and curtain rod. Our technicians adjusted the outlet angle of the pipes to avoid interference with the frame and finishing elements.
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Interior aesthetics : To ensure a clean appearance, a discreet white cover was used to camouflage the refrigeration connections. This solution maintains a clean look while complying with HVAC installation standards.
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Sound comfort : the choice of the Venstar device was judicious since its noise levels are reduced, promoting a calm environment, particularly appreciated in a bedroom or workspace.
Benefits for the customer
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Increased comfort in summer thanks to fast and efficient air conditioning.
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Space optimization with a discreet and space-saving wall-mounted device.
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Reduced power consumption compared to portable or window devices.
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Durable installation carried out by our RBQ certified teams, guaranteeing long-term compliance and performance.
Importance of maintenance
Like any wall-mounted air conditioning unit, the Venstar unit requires regular maintenance to maintain its performance and extend its lifespan. At AirGreen, we recommend:
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Cleaning the filters at least once a month during use.
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A complete annual maintenance including checking the pressures, the condensate drain and the cleanliness level of the evaporator and the outdoor condenser.
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Validation of energy performance, particularly before the hot season.
Proper maintenance not only reduces breakdowns, but also energy costs, while improving indoor air quality.
Why choose AirGreen in Montreal, Laval, South Shore and North Shore?
At AirGreen, we focus on HVAC installations that combine comfort, energy efficiency, and quality workmanship. Our expertise covers all recognized brands, including Venstar, Fujitsu, Gree, Hitachi, Midea, and Sharp .
We respond quickly in Greater Montreal—whether in Montreal, Laval, Longueuil, the South Shore or the North Shore —and we support our clients in every step, from selecting the device to dealing with available subsidies.
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).