Project

Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Dorval: Discreet Mini Split Air Conditioner Near a Window and a Corner Wall

In Dorval, AirGreen installed a GREE VITA R32 wall-mounted heat pump in a tight space near a window, with a clean finish, good air clearance, and careful integration.

By AirGreen Climatisation & Chauffage Admin14 min read
Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Dorval: Discreet Mini Split Air Conditioner Near a Window and a Corner Wall
Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Dorval: Discreet Mini Split Air Conditioner Near a Window and a Corner Wall
–chapters in this story
14 minreading time
–type of installation
2026year published
The tour

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.

Generic diagram: wall-mounted heat pump, indoor and outdoor units

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.

  1. 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.

  2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

  3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

  4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

  5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

  6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

  7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

The job

A GREE VITA R32 wall installation in Dorval where every centimeter counted

In this residence in Dorval, the client’s goal was clear: to improve the comfort of a room exposed to temperature fluctuations without compromising interior space or the room’s appearance. The solution chosen by our team was the installation of a GREE VITA R32 wall heat pump, also used as a mini split wall air conditioner, a relevant choice for homeowners looking for a reliable, compact solution well suited to the climate realities of the greater Montreal area.

The project photo shows an important point of this installation: the indoor unit was installed very high on the wall, near a textured ceiling, a corner wall, and a curtain. This type of configuration requires special attention. A wall unit should never simply be “placed where there is space left.” You need to consider air circulation, clearance around the unit, the direction of airflow, the routing of refrigerant lines, the drainage of condensation, and future access for HVAC maintenance.

At AirGreen, we are used to working in environments where space is limited: condos in Montreal, single-family homes in Laval, renovated duplexes in Longueuil, older properties on the North Shore, and family residences on the South Shore. This installation in Dorval perfectly illustrates our approach: installing a high-performance system, but above all integrating it intelligently into the building’s reality.

Why the GREE VITA R32 was well suited for this room

The GREE VITA R32 is a mini-split wall-mounted heat pump designed to provide both summer cooling and supplemental or primary heating depending on the residence configuration. The VITA R32 range is available in several capacities, allowing the device choice to be adapted to the area, insulation, sun exposure, and actual room use. The VITA R32 series versions use R32 refrigerant, incorporate Inverter technology, and are designed to ensure efficient heating down to cold temperatures, depending on the chosen capacity and installation conditions.

In the case of this installation in Dorval, the room had a common constraint: the presence of a window and curtain treatment near the unit. Choosing a compact wall air conditioner allowed freeing up floor space while avoiding temporary solutions like window air conditioners, which are often noisier, less aesthetic, and less effective at maintaining a stable temperature.

The GREE VITA R32 was also suitable because it meets a very common need among our clients: to have a device that is simple to use, visually discreet, and capable of modulating its power. Inverter technology allows the system to adjust its operation rather than constantly starting and stopping abruptly. The result: more stable comfort, fewer temperature fluctuations, and a more pleasant daily use.

Installation near a corner: the details that make the difference

Installing a wall-mounted heat pump near a corner requires precision. In the photo, you can see that the unit is positioned near the right side wall. This type of placement may be necessary when the structure, windows, furniture, or duct routes limit options. However, several mistakes should be avoided:

  • placing the unit too close to the ceiling, which can impair air intake;
  • directing the airflow directly towards a curtain or seating area;
  • neglecting the space needed to open the hood when cleaning the filters;
  • hiding a poor pipe passage behind an improvised finish;
  • installing the drain without sufficient slope, which can cause backflows or water drips.

For this project in Dorval, our team worked with a logic of clean and durable finishing. The unit was installed to respect the best possible compromise between available clearance, room aesthetics, and air diffusion efficiency. A successful HVAC installation is not just a matter of BTU capacity: it’s also about placement, leveling, connection, and understanding the building.

The importance of clearance around the indoor unit

A wall-mounted mini split generally draws air from the top and redistributes it from the front and bottom. If the unit is too close to the ceiling, if a curtain blocks the air outlet, or if a tall piece of furniture is directly in front of the device, performance can decrease. In some cases, the client may even feel that the device “doesn’t push enough,” when the problem simply comes from poor placement.

In Dorval, the presence of the curtain on the right required special attention. We evaluated the positioning to limit the interaction between the airflow and the fabric. This step is important for two reasons: to preserve occupant comfort and to prevent the curtain from disrupting air circulation. Good diffusion allows the room to reach the desired temperature faster and reduces hot or cold spots.

The duct passage: clean, discreet, and durable

Behind a successful wall installation, there is always invisible work: refrigerant ducts, communication wiring, electrical supply, line insulation, and condensation drainage. In a residence in Dorval, especially near a window or an exterior wall, it is often necessary to deal with structural constraints, wall openings, and interior finishing.

Our team plans the duct route before drilling. This helps avoid unnecessary angles, overly exposed lines, and finishes that age poorly. We also pay special attention to the airtightness of the wall passage, a crucial point in Quebec to prevent air infiltration, humidity, and heat loss.

On a GREE wall-mounted heat pump, as with any quality mini split system, the real performance depends as much on the device as on the quality of the installation. A poorly done connection, a badly insulated line, or a poorly positioned drain can reduce comfort and cause long-term problems. That’s why we apply a rigorous method at every step.

What this GREE VITA R32 installation brings to the comfort of a home in Dorval

After installation, the client benefits from a discreet wall unit capable of quickly improving room comfort. In summer, the wall air conditioning helps control heat and humidity, especially in rooms exposed to the sun or located upstairs. In mid-season and cold periods, the heating function of the heat pump helps reduce dependence on electric baseboards or other heat sources, depending on the house configuration.

A solution adapted to West Island homes

Dorval features a variety of buildings: older houses, interior renovations, condos, properties with extensions, closed rooms, and open spaces. This diversity requires a personalized approach. A solution that works perfectly in a bungalow in Laval will not necessarily be optimal in a house near the lake in Dorval or in a condo in Longueuil.

In this project, the location near the window made installation more delicate but also very logical. The area to be treated was directly influenced by thermal losses or gains around the opening. By positioning the unit correctly, we allowed better air circulation in the room without occupying floor space.

Useful technical references for the GREE VITA R32

The GREE VITA R32 range includes different capacities, including residential models commonly used for closed rooms, living areas, or larger spaces depending on the thermal load. Some versions display efficiency ratings such as SEER2, HSPF2, and EER2 that vary according to BTU and voltage. For example, public datasheets for the range mention capacities of 9,000, 12,000, 18,000, and 24,000 BTU, with different efficiency values depending on each configuration.

For an owner, this means that you should not choose a heat pump solely based on the visible size of the indoor unit. Two devices that look similar on the wall can have different capacities. At AirGreen, we assess the area, insulation, ceiling height, solar orientation, number of occupants, presence of large windows, and usage habits before recommending a capacity.

A device that is too small will run too long without reaching the desired comfort. A device that is too large may cool too quickly without properly dehumidifying, which results in a less comfortable feeling in summer. The right choice lies in the balance between power, modulation, and actual use.

Subsidies and eligibility: a point to verify before installation

Several clients from Montreal, Laval, Longueuil, the North Shore, and the South Shore contact us thinking first about available subsidies. This is normal: an eligible heat pump can represent interesting financial aid. However, eligibility depends on the exact model, its capacity, its certifications, and the program rules in effect at the time of installation.

For the GREE VITA R32 installed in Dorval, we always recommend verifying eligibility based on the exact model sheet and the final invoice. At AirGreen, we help our clients understand the necessary information so they can submit their application with the correct documents. This step prevents common errors: wrong model number, unconfirmed capacity, incomplete invoice, or confusion between the indoor and outdoor units.

Mistakes to avoid when installing near a window

This installation in Dorval is a good example for homeowners considering a wall air conditioner installation in a room where options seem limited. Here are the mistakes we often see in poorly planned installations:

Choosing the location only to hide the ducts

A shorter line run may seem convenient, but if the unit blows poorly or is too close to an obstacle, comfort will be compromised. A balance must be found between aesthetics, efficiency, and maintenance.

Neglecting access to the filters

The filters of a wall unit must be cleaned regularly. If the device is stuck in a corner or too close to a fixed finish, maintenance becomes difficult. A device that is hard to maintain often ends up being less well maintained.

Direct the air straight towards a sensitive area

Direct airflow towards a bed, desk, or chair can create discomfort, even if the room temperature is good. During our installations, we take into account the actual use of the room.

Forgetting the condensation drain

In air conditioning, the indoor unit produces condensation. A poorly planned drain can cause drops, stains, odors, or avoidable service calls. The slope, route, and outlet must be considered from the start.

A sober and professional interior finish

In this project, the finish was particularly important. The device is visible as soon as you enter the room and is near a side wall. A careless installation would have immediately caught the eye: misaligned unit, poorly fitted cover, visible line passage, or rough wall finish.

Our goal was to leave a simple impression: the unit looks like it belongs. This is often the best possible result in residential HVAC installation. A wall-mounted heat pump should provide comfort without visually dominating the room.

Why call on AirGreen for an installation in Dorval

AirGreen regularly operates in the West Island, in Dorval, Pointe-Claire, Lachine, Kirkland, Beaconsfield, and throughout Greater Montreal. Our strength lies in our ability to combine technical recommendation, careful installation, and accessible after-sales service.

For a GREE VITA R32 wall-mounted heat pump, our approach includes:

  • the evaluation of the indoor location;
  • the validation of the duct routing;
  • the choice of an appropriate capacity;
  • an installation compliant with industry best practices;
  • the drainage check;
  • the operation test in cooling and heating;
  • the explanations given to the customer for daily use;
  • the HVAC maintenance tips to maintain performance.

We know that many customers compare brands, prices, and contractors. This comparison is healthy, but it must include the quality of the installation. A good device poorly installed will rarely give a good result. Conversely, a well-chosen and well-installed device can transform the comfort of a room for many years.

Practical advice after installation

To get the most out of a GREE VITA R32 installed in a setup like the one in Dorval, we recommend the client keep the area around the unit as clear as possible. The nearby curtain should not be left constantly in front of the air outlet. Filters should be cleaned according to use, especially during intensive air conditioning periods or if the room accumulates a lot of dust.

It is also best to avoid extreme settings. In summer, programming a stable temperature helps the device modulate more efficiently. In heating mode, letting the heat pump work continuously often provides more uniform comfort than short cycling.

Periodic professional maintenance also allows checking the condition of the indoor unit, the coil, the drain, the outdoor unit, and overall performance. This is especially important in regions like Montreal, Laval, Longueuil, the North Shore, and the South Shore, where systems are exposed to humid heat, pollen, dust, frost, and demanding seasonal cycles.

A project simple in appearance, technical in the details

At first glance, this installation in Dorval may seem like a standard wall mount. However, the proximity to the ceiling, the angle of the wall, the window, and the curtain required careful consideration. These are the details that distinguish an ordinary installation from a durable, comfortable, and well-integrated one.

The GREE VITA R32 wall-mounted heat pump met the client’s needs well: a discreet, efficient device, suitable for daily use and adapted to a room where comfort needed to be improved without invasive work. For AirGreen, this project represents exactly the kind of intervention where field experience counts: understanding the building, respecting the interior aesthetics, and delivering a reliable solution.

In Dorval, as elsewhere in Greater Montreal, a good mini split installation always starts with a thorough analysis. The model matters, the capacity matters, but the installation matters just as much. It’s this combination that ensures a pleasant, efficient system ready to face Quebec’s seasons.

The steps

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.

Step 1 of 9The on-site estimate

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.

  1. 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.
  2. The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
  3. Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
  4. The wall openingA single opening, with the slope the drain needs to flow outside.
  5. The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
  6. Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
  7. The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
  8. Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
  9. The walkthroughRemote, modes, filters: we show you the essentials before we leave.
Your numbers

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.

Size checkYour baseboards, in BTU/h
–BTU/h of installed electric heat

    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.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Going further

    Your own project, step by step

    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 indoor unit's filters.
    • Clear leaves and debris left on the outdoor unit by winter.
    • Test cooling before the first hot days.
    At your place

    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.

    0 / 6 checked
    True or false

    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.

    2. You pick the capacity with a simple square-footage rule.

    3. A multi-zone connects several indoor heads to a single condenser.

    4. The disconnect can sit behind the patio furniture.

    Frequently asked questions

    What people ask us about this kind of work

    12 questions
    Does a wall-mounted heat pump heat in winter?
    Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
    Wall-mounted or multi-zone: how do I choose?
    One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
    Where does the outdoor unit go?
    Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
    Are there grants?
    Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
    How cold can it heat?
    It depends on the model. According to Hydro-Québec, newer models work down to a temperature between −15 °C and −25 °C, and some cold-climate models are certified lower. The minimum temperature is on each unit's spec sheet.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Is it noisy?
    The sound level depends on the model and is listed in decibels on each unit's spec sheet. Location matters too: when possible, we avoid putting the outdoor unit under a bedroom window.
    The outdoor unit is covered in ice: is that normal?
    Some frost is: the unit runs defrost cycles. Never hit the ice. If the unit stays iced up or stops heating, call us.
    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.

    Could this job help a neighbour?

    Share
    Similar projects

    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.

    All our projects

    Your project

    Every house has its constraints. We see them before we install.

    The on-site estimate is free and the quote follows within 24 hours.

    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
    • EstimateOn site, free
    • QuoteWithin 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).

    Leave a comment