Project

Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Lachine, Montreal – Mini Split Air Conditioning and Heating

AirGreen installs a GREE VITA R32 wall-mounted heat pump in Lachine: compact mini split, protected piping, neat installation, and four-season comfort for homes in Montreal.

By AirGreen Climatisation & Chauffage Admin13 min read
Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Lachine, Montreal – Mini Split Air Conditioning and Heating
Installation of a GREE VITA R32 Wall-Mounted Heat Pump in Lachine, Montreal – Mini Split Air Conditioning and Heating
–chapters in this story
13 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 compact, clean installation designed for the residential realities of Lachine

In Lachine, in a residential area of Montreal where houses often combine limited outdoor spaces, textured walls, side fences, and existing electrical equipment, every HVAC installation requires precise planning. For this project, our AirGreen team installed a GREE VITA R32 wall-mounted heat pump, also called a mini split or wall air conditioner with heating, taking into account a particularly tight outdoor environment: stucco wall, nearby electrical meter, wooden fence, limited side clearance, and a vertical technical passage to integrate neatly.

This type of installation perfectly illustrates what many homeowners in Montreal, Laval, Longueuil, on the North Shore and the South Shore are looking for: an efficient, discreet, reliable system installed without compromising the home's exterior appearance. Here, the goal was clear: to provide year-round comfort with a high-performance wall-mounted solution, while carrying out a neat installation in an outdoor area where every inch counted.

A GREE VITA R32 suited for everyday comfort in Quebec

The GREE VITA R32 is a wall-mounted heat pump designed to meet the common needs of Quebec residences: efficient air conditioning in summer, effective heating during cold periods, quiet operation, and compact size. Depending on capacity configurations, the VITA R32 series uses the refrigerant R32, offers efficiencies such as SEER2 up to 20.5, HSPF2 8.8, EER2 up to 12.5, and can provide heating down to about -25 °C, making it an attractive option for houses, duplexes, condos, and small commercial spaces in Greater Montreal.

For a Lachine homeowner, this choice offers several concrete advantages:

  • Heating and air conditioning in a single system
  • R32 refrigerant, more modern and efficient than many previous generations
  • Compact outdoor size, useful when available space is limited
  • Quiet operation, appreciated in side yards or near living spaces
  • Precise temperature control, ideal for main rooms, open floors, or hard-to-balance zones
  • Built-in or available Wi-Fi depending on configuration, allowing convenient remote management on several models in the VITA range.

In this project, the outdoor location shown in the photo displays a neat, well-aligned installation designed to integrate with the existing architecture without creating unnecessary clutter.

The specifics of this AirGreen installation in Lachine

A demanding outdoor location, between fence, electrical meter, and textured wall

The first constraint of this project was the available space. The outdoor unit had to be placed in a side area, near a wooden fence and close to an electrical meter. This configuration is common in Montreal, especially in boroughs where houses are close together and yard accesses do not always allow much maneuvering room.

Our team therefore conducted a complete analysis before installation:

  • checking clearances around the outdoor unit;
  • positioning to allow good air circulation;
  • respect for access to the electrical meter;
  • choice of a discreet wall passage for the refrigerant pipes;
  • aesthetic alignment of the white line cover on the exterior wall;
  • stable mounting of the unit on suitable supports.

The visible result is a compact, straight, and clean installation: the outdoor unit is positioned at a practical height, the lines are protected by a vertical line cover, and the whole remains accessible for future HVAC maintenance.

Why not just place the unit on the ground?

In many residential projects in Lachine, we recommend avoiding direct ground placement when conditions are not suitable. An outdoor unit placed too low can be exposed to snow accumulation, dead leaves, debris, ground moisture, and obstacles around the base.

Here, mounting on supports allows:

  • better protection against water and debris;
  • more stable clearance around the device;
  • a more professional appearance;
  • easier access for technical inspections;
  • better durability of the installation.

This approach is especially relevant in areas like Montréal, Laval, Longueuil, the North Shore, and the South Shore, where winters, freeze-thaw cycles, humidity, and snow accumulation can affect the performance of a poorly positioned installation.

A clean and protected line passage

One important element of this installation is the vertical passage of the lines inside a white line cover. This detail may seem simple, but it plays a crucial role in the durability and appearance of the work.

The line cover protects:

  • refrigerant lines;
  • communication wiring;
  • condensate drain;
  • pipe insulation;
  • connections against UV rays, weather, and light impacts.

On a textured wall like this one, alignment and fastening require special attention. A poorly installed line cover can appear wavy, cause leaks, or leave vulnerable gaps. At AirGreen, we take the time to ensure a straight, solid finish that matches the facade.

Special attention to clearances around the unit

A wall-mounted heat pump needs good clearance to operate properly. When the outdoor unit is too close to a wall, fence, obstacle, or electrical equipment, performance can decrease and perceived noise can increase.

In this case, the GREE unit was positioned to maintain good airflow at the front while considering the side fence. This kind of adjustment is essential because an installation should never be evaluated only by the “easiest” location: it must be designed for long-term performance.

The importance of access for HVAC maintenance

A common mistake we observe in some installations is placing the outdoor unit in a location that is too difficult to access. This complicates future HVAC maintenance work, such as coil cleaning, connection checks, drain inspection, or operational tests.

In this installation in Lachine, the unit remains accessible despite limited space. This decision is important because a well-maintained heat pump retains its performance better, operates more quietly, and reduces the risk of unexpected shutdowns.

An ideal solution for urban homes in Montreal

The GREE VITA R32 is very suitable for urban residences where an effective comfort solution is sought without major renovations. In many homes in Montreal, especially in Lachine, LaSalle, Verdun, Saint-Laurent, Ahuntsic, Rosemont, or on the Plateau, owners often want to improve their comfort without installing a full central system.

A mini split wall-mounted heat pump precisely meets this need. It allows treating a main area, a floor, an open living room, a bedroom, an office, or a living space while limiting the work involved.

For this project, the outdoor configuration clearly showed that a compact system was preferable to a heavier solution. The GREE VITA R32 offered a good balance between performance, accessibility, and discretion.

An installation designed for indoor comfort

Even though the photo shows the outdoor unit, the real performance is mainly felt indoors. When a wall-mounted heat pump is properly sized and well positioned, it quickly improves comfort:

  • more stable temperature;
  • reduction of overly hot or cold zones;
  • effective air conditioning during humid periods;
  • efficient supplementary heating in autumn, spring, and during several winter days;
  • quieter operation than a window air conditioner;
  • best interior aesthetics.

In homes in Lachine, where rooms can sometimes be long, open, or sun-exposed, the choice of indoor location is as important as that of the outdoor unit. Our team analyzes air circulation, lifestyle habits, solar orientation, insulation, and room layout before finalizing the installation.

Mistakes to avoid when installing a wall-mounted heat pump

This project also serves to remind of some common mistakes to avoid:

Choosing a unit based only on price

A heat pump must be chosen based on the area, insulation, sun exposure, building type, and heating expectations. A unit that is too small will run constantly, while an oversized unit can cause short cycles and less uniform comfort.

Neglecting the outdoor location

Placing the outdoor unit too close to an obstacle can hinder air exchange. In a side yard like this one, clearance analysis is essential.

Forgetting to protect the pipes

The pipes must be well insulated, protected, and securely fastened. A well-installed line cover improves the durability and appearance of the project.

Installing without considering maintenance

A device must remain accessible. An installation that is too tight complicates future interventions and increases long-term costs.

Entrusting the project to a non-specialized team

An HVAC installation requires knowledge in refrigeration, electricity, drainage, wall mounting, vacuuming, pressure testing, and startup. At AirGreen, we carry out complete installations in accordance with industry best practices.

The GREE VITA R32 and available subsidies

Depending on the exact installed capacity, system configuration, and current criteria, some GREE VITA R32 wall-mounted heat pumps may be eligible for subsidy programs such as energy efficiency programs applicable in Quebec. The AirGreen product pages notably list VITA R32 versions of 9,000, 12,000, 18,000, and 24,000 BTU, with performance information and, depending on the models, subsidy amounts displayed for the Montreal, Laval, Longueuil, North Shore, and South Shore markets.

At AirGreen, we help our clients understand eligibility criteria. The applicable amount depends on the exact model, AHRI, capacity, efficiency, and program rules at the time of installation. That’s why we always recommend checking the latest information before confirming the final choice.

An exterior finish that respects the home

In the photo, the installation stands out for its simplicity: clean outdoor unit, white vertical line cover, metal supports, well-maintained front clearance, and integration near existing equipment without overloading the wall.

This level of finish is important for homeowners who want to improve their comfort without compromising the appearance of their home. A wall heat pump should not look like it was added randomly. It must integrate with the building, respect technical access points, and remain functional for many years.

A typical AirGreen approach intervention

This project in Lachine reflects our working method:

  1. Building and client needs analysis
  2. Choosing a suitable model
  3. Checking indoor and outdoor locations
  4. Planning the routing of the pipes
  5. Mechanical and electrical installation
  6. Vacuuming and system testing
  7. Starting the device
  8. Explaining the operation to the client
  9. Maintenance and performance tips

We apply the same rigor in our projects in Montreal, Laval, Longueuil, on the North Shore and the South Shore, whether it’s a simple wall heat pump, a multi-zone system, or a more complex installation in a condo, plex, or commercial space.

Why Lachine homeowners choose a wall heat pump

In Lachine, many homes greatly benefit from a wall system. The area combines older residences, recent renovations, semi-detached houses, condos, and buildings with limited outdoor spaces. A GREE VITA R32 wall heat pump offers a flexible solution for various needs:

  • reduce the use of electric baseboards during certain periods;
  • cool effectively without a window air conditioner;
  • improve the comfort of a main room;
  • add a supplementary heating solution;
  • modernize a home without installing ducts;
  • enjoy a discreet and easy-to-use system.

For families, owner-occupants, and real estate investors, this type of installation often represents a tangible improvement in the building’s usability value.

Practical advice after installation

After an installation like this, we recommend some simple best practices:

  • regularly clean the indoor unit filters;
  • keep the front of the outdoor unit clear;
  • avoid accumulating leaves, snow, or objects around the device;
  • set the temperature steadily rather than frequently turning the system completely off;
  • schedule periodic HVAC maintenance;
  • monitor any unusual changes in noise, airflow, or performance.

These actions help extend the lifespan of the heat pump, improve its efficiency, and maintain indoor comfort.

A successful, discreet, and durable project

This GREE VITA R32 wall-mounted heat pump installation in Lachine demonstrates that a well-executed project is not just about mounting a device on a wall. It requires understanding the building, respecting constraints, protecting the pipes, ensuring clearances, preserving aesthetics, and delivering a reliable system.

In this case, AirGreen completed a compact and clean installation in a tight technical space, near an electrical meter and a fence, while maintaining a neat exterior finish. The client now benefits from a modern mini split air conditioning and heating system, suited to the residential needs of Montreal and the requirements of the Quebec climate.

For owners in Lachine, Montreal, Laval, Longueuil, the North Shore and the South Shore, this type of project shows the importance of choosing not only the right device but also the right installation team.

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