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Installation of a TRANE ProSpace PTAC Air Conditioner in Vaudreuil-Dorion

Installation of a TRANE ProSpace PTAC wall-mounted air conditioner in Vaudreuil-Dorion by AirGreen: a compact and efficient solution, ideal for residences seeking individual thermal comfort without heavy renovations.

By AirGreen Climatisation & Chauffage Admin4 min read
Installation of a TRANE ProSpace PTAC Air Conditioner in Vaudreuil-Dorion
Installation of a TRANE ProSpace PTAC Air Conditioner in Vaudreuil-Dorion
Generic diagram: PTAC installed under a window, through the wall

Generic illustration of this type of installation, not a survey of this job site. Tap a number.

  1. All-in-one: it heats and cools from inside the room, with no separate outdoor unit.

  2. A box that goes through the wall and holds the unit. It is installed following the manufacturer's instructions so water drains to the outside.

  3. This is where the unit exchanges heat with the outdoor air. It must stay clear.

  4. A dedicated connection matched to the unit's voltage and amperage.

  5. On the unit or through a wall thermostat, depending on the model.

  6. Under a window, the unit must leave curtains, sill and opening free, and let air move through the room.

A compact and efficient wall-mounted solution to optimize comfort in a residential space in Vaudreuil-Dorion

At AirGreen, we are regularly called upon for HVAC installation projects that require both efficiency, compactness, and custom adaptation to a building’s constraints. This is exactly the type of challenge we tackled during this recent installation of a TRANE ProSpace PTAC (Packaged Terminal Air Conditioner) unit in a residence in Vaudreuil-Dorion, in Montérégie.

This project is a perfect example of our expertise in integrated wall-mounted HVAC systems, often used in settings such as hotels, senior residences, or apartments requiring individual climate control per room.


Why choose a TRANE ProSpace PTAC system?

The decision to install a TRANE ProSpace PTAC air conditioner was driven by several factors:

  • Compact, horizontal design, ideal for low wall installations

  • Self-contained unit that provides both heating and cooling

  • Outstanding reliability from the TRANE brand, widely known in the industry for durability

  • Simplified maintenance with front-access components

  • No ductwork required, minimizing drilling or major interior modifications

This model is commonly used in multi-family or commercial spaces, but it’s becoming increasingly popular in residential settings seeking to segment comfort zones independently and in an energy-efficient way.


Installation context: adapting to an existing wall opening

When we were contacted for this installation in Vaudreuil-Dorion, the client was looking for a solution to replace an old inefficient wall-mounted system without undergoing major renovations. The wall already had a horizontal cutout, typical for PTAC installations. The previously installed unit had caused moisture infiltration and damaged the paintwork, which required careful wall preparation before installing the new unit.


Steps in installing the TRANE ProSpace PTAC

1. On-site evaluation and wall preparation

Our technicians began by inspecting the wall space, verifying the structural integrity of the existing opening. Special attention was paid to any residual moisture and the condition of the wall finish. We:

  • Scraped off the damaged paint residues

  • Applied a light antifungal treatment

  • Adjusted the edges of the opening for a perfect fit for the new unit

2. Integration of the TRANE ProSpace system

The unit was perfectly recessed into the wall opening, with close attention to leveling and alignment to ensure proper drainage and quiet operation. The electrical connection was completed with a dedicated breaker, meeting all safety standards for this type of equipment.

3. Airflow control and final testing

After installation, we proceeded with:

  • Airflow and ambient noise level checks

  • Performance tests in both heating and cooling modes

  • A full walkthrough with the client on how to operate the unit (thermostat, washable filters, etc.)


Specific benefits of this installation for the client

  • Individualized thermal comfort without the cost of a central system

  • Improved energy efficiency, with optimized room-by-room performance

  • Reduced ambient noise, thanks to TRANE's ventilation technology

  • Ease of maintenance, with filters accessible without complicated disassembly

  • No impact on building structure, no ductwork or suspended ceilings needed


Why choose AirGreen for your wall-mounted HVAC installations in Vaudreuil-Dorion?

This project showcases our ability to provide tailored solutions for every client’s unique needs, taking into account space, budget, and comfort. Our technicians are specifically trained in PTAC wall-mounted systems, and we only work with proven brands like TRANE, Gree, Fujitsu, and Sharp.

In addition to installation, we provide full maintenance and repair services, including custom maintenance contracts to ensure the longevity and performance of your HVAC systems.


What we recommend for clients interested in a PTAC solution

  • Check the insulation of your exterior walls, as poor insulation can reduce system efficiency

  • Consider installing adequate drainage, as condensate can build up under the unit without a planned exit

  • Request an on-site evaluation from our experts to determine whether a PTAC is more appropriate than a standard wall-mounted system


AirGreen operates throughout the South Shore, North Shore, and Greater Montréal

Our services cover the entire Greater Montréal area, including Laval, Longueuil, Brossard, Sainte-Julie, Repentigny, Terrebonne, and of course Vaudreuil-Dorion. Whether you’re a homeowner, property manager, or contractor, our team provides custom HVAC solutions perfectly aligned with your comfort and energy-efficiency goals.

The steps

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.

Step 1 of 7The on-site estimate

We look at the outside wall, the window, the space in the room and the power supply.

  1. The on-site estimateWe look at the outside wall, the window, the space in the room and the power supply.
  2. The quoteThe unit, the sleeve and the price, in writing.
  3. The wall sleeveInstalled following the manufacturer's instructions, so water drains to the outside.
  4. The electrical workA dedicated connection matched to the unit's voltage and amperage.
  5. Unit and grilleThe unit slides into the sleeve; the outdoor grille stays clear.
  6. TestsStart-up and a check of heating and cooling.
  7. The walkthroughControls, filter, what to keep clear.
Through the seasons

What to do, season by season

Three habits per season for this unit. They take a few minutes and prevent many calls.

  • Clean the filter.
  • Clear the outdoor grille.
  • Test cooling.
And at your place?

Which type of equipment for your project?

Pick what looks like your need.

Mistakes avoided

Four mistakes we do not make

Flip each card to see what we do instead.

Frequently asked questions

What people ask us about this kind of work

7 questions
What is a PTAC?
An all-in-one unit installed under the window, through the wall. It heats and cools the room with no separate outdoor unit.
Where does it go?
On an outside wall that can take the sleeve, with the grille clear outside and free air in front of the unit.
What does it need electrically?
A dedicated connection matched to the unit's voltage and amperage. AirGreen holds subclass 16 Electricity.
Can the existing sleeve be reused?
Sometimes, if the sleeve fits the new unit and is in good shape. We check on site.
Does a PTAC cool the whole house?
No, it is designed for one room. For several rooms, a multi-zone or a central system is often a better fit.
Does AirGreen hold the required licences?
Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
Is the estimate free?
Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.
Going further

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  • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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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).

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