Project

Installation of a GREE FREE MATCH R32 DualZone 2-Zones 2-Head heat pump in Saint-Laurent in a renovated residential space with wall integration above a living room

AirGreen installs a GREE FREE MATCH R32 DoubleZone heat pump in Saint-Laurent: 2 zones, 2 wall-mounted units, precise comfort, discreet integration, and local HVAC expertise.

By AirGreen Climatisation & Chauffage Admin14 min read
Installation of a GREE FREE MATCH R32 DualZone 2-Zones 2-Head heat pump in Saint-Laurent in a renovated residential space with wall integration above a living room
Installation of a GREE FREE MATCH R32 DualZone 2-Zones 2-Head heat pump in Saint-Laurent in a renovated residential space with wall integration above a living room
–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 Dual-Zone Installation in Saint-Laurent where comfort needed to adapt to an open living area and adjacent rooms

In this project carried out in Saint-Laurent, our AirGreen team installed a GREE FREE MATCH R32 Dual-Zone heat pump with 2 zones and 2 wall-mounted units, a configuration chosen to improve comfort in two distinct areas of a residential dwelling while maintaining a clean, discreet, and functional interior integration. The image of this installation shows one of the wall-mounted units positioned above a living area, in a renovated room where air circulation had to be precisely studied due to the proximity of a door, an open corridor, a low ceiling, and furniture placed directly beneath the unit.

This type of project is common in the Saint-Laurent area, where there are houses, condos, apartments, and renovated units with sometimes divided, sometimes semi-open layouts. A single wall-mounted unit is not always enough to ensure consistent comfort, especially when certain rooms are separated by corridors, stairs, or interior doors. The Dual-Zone solution specifically allows two spaces to be treated more precisely, without installing two independent outdoor systems.

At AirGreen, we never consider an HVAC installation as simply mounting a unit on the wall. Each appliance must be placed according to the building's reality, the occupants' habits, constraints for conduit passage, drainage, maintenance access, and air projection. In this project, the final result shows a sober, well-aligned installation, with an indoor unit that blends naturally into the existing decor while providing efficient air distribution to the living area.

Why the GREE FREE MATCH R32 was suitable for this Saint-Laurent dwelling

The GREE FREE MATCH R32 is a particularly relevant multi-zone solution when a client wishes to heat and cool more than one room from a single outdoor unit. In this case, the 2-Zone - 2-Head configuration allowed for independent control in two areas of the dwelling, without multiplying visible outdoor equipment.

This choice addresses several concrete needs:

  • improving comfort in a daily-used living area;
  • serving a distinct second zone, such as a bedroom, office, or another enclosed room;
  • limiting outdoor clutter;
  • allowing different settings according to room occupancy;
  • reducing temperature differences between zones;
  • offering a more flexible solution than a single centralized wall-mounted air conditioner.

In a neighborhood like Saint-Laurent, where many residential buildings have been renovated or redeveloped over the years, interior layouts are not always conducive to a single heating or cooling source. A Dual-Zone heat pump allows the system to adapt to the home, rather than forcing the home to adapt to the system.

A wall-mounted unit installed in a strategic location

The unit visible in the photo was installed in a particularly interesting area: above a sofa, facing an open circulation area. On the left side, a passage leads to another section of the dwelling. To the right, an interior door limits the available wall space. On the ceiling, recessed lighting and the relatively low height required particular attention to the unit's upper clearance.

The chosen location allows for air diffusion into the main living area, while avoiding cluttering walls used for furniture or circulation. The unit is installed high enough to promote good air distribution, but with positioning that takes into account ceiling limitations and future access to filters.

In this type of environment, a few centimeters can make a big difference. A unit placed too close to the ceiling can hinder air intake. A unit placed too low can blow air directly onto occupants. A poorly centered unit can unbalance the room's aesthetics. Our team therefore worked with precision to achieve a result that is both technical and visually harmonious.

The importance of air circulation in a renovated dwelling

Renovated dwellings often present particular challenges. Walls may have been moved, openings widened, ceilings redone, and rooms may have different volumes from one area to another. In the image, the room appears modern, with recent flooring, recessed lighting, light walls, and a configuration where the living room communicates with an adjacent passage. This type of layout requires careful analysis of air movement.

A wall-mounted heat pump does not operate like a central ducted system. It diffuses air from a specific point. The choice of wall, height, vane orientation, and unit capacity directly influences perceived comfort. In a Dual-Zone configuration, each head must have a clear mission: a primary zone, a secondary zone, and control logic adapted to daily use.

In this project in Saint-Laurent, the goal was to allow the living area to quickly gain comfort, without creating unpleasant drafts for people sitting in the living room. The unit's orientation and the ability to adjust the vanes then allow for airflow adjustment according to the seasons: more diffused for air conditioning, more directed towards the area to be heated during cold periods.

The choice of R32: current technology for multi-zone systems

The GREE FREE MATCH R32 range uses R32 refrigerant, which is increasingly present in new heating and air conditioning systems. For homeowners, this represents a modern solution, adapted to current HVAC market standards. R32 is recognized for its good efficiency in heat pump equipment and allows manufacturers to design high-performance systems in compact formats.

In a multi-zone installation, however, efficiency does not only depend on the refrigerant or the brand. It also depends on the quality of sizing, pipe lengths, refrigerant line insulation, outdoor unit position, and interior configuration. This is why our work is not limited to connecting appliances: we validate the entire technical process to ensure stable and durable operation.

An installation designed for the client's daily life

The comfort of a Dual-Zone system is measured in daily use. The client can adjust the two heads differently according to the needs of each room. For example, the living room can be air-conditioned during the hottest hours, while a bedroom can be maintained at a milder temperature in the evening. An office can be heated during the day without necessarily treating the entire dwelling to the same level.

This flexibility is particularly appreciated in residences in Montreal, Laval, Longueuil, on the North Shore and the South Shore, where occupants often seek a comfortable, efficient, and less intrusive solution than a central ducted system. In several existing buildings, adding ducts would be costly, complex, or impossible without major renovations. A Dual-Zone heat pump then becomes a very advantageous option.

Technical challenges encountered in this installation

Even if the final result appears simple and streamlined, this project involved several points of vigilance. The first challenge was the positioning of the indoor unit in a space where the available wall was limited by the door on the right and by the open passage on the left. It was necessary to avoid placing the unit too close to an obstruction while ensuring good air throw into the room.

The second challenge concerned the comfort of occupants sitting under the unit. When a wall-mounted unit is installed above a sofa, overly aggressive direct airflow must be avoided. Adjusting the vanes, mounting height, and general orientation of the unit are therefore essential.

The third challenge concerned the integration of conduits and the drain. In a clean HVAC installation, refrigerant lines, wiring, and condensation drainage must be planned to preserve the building's interior and exterior appearance. The invisible part of the installation is often the most important: drain slope, insulation, waterproofing, support, fastening, and line protection.

A sober and consistent interior finish

One of the most important elements in a residential installation is the finish. A wall-mounted unit is visible every day. It is part of the room. In this installation, the white unit blends well with the light walls, white door, and ceiling. The contrast with the door's black handles and hinges creates a modern decor, and the unit remains discreet despite its position above the living room.

At AirGreen, we attach great importance to this aesthetic dimension. An installation can be technically correct, but if it is misaligned, visually too imposing, or placed without thought, the client will notice it daily. Here, the unit was installed to preserve the visual cleanliness of the room and maintain a simple reading of the space.

Mistakes to avoid with a Dual-Zone heat pump

Many homeowners shopping for a heat pump initially focus on brand, price, or BTU count. These elements are important, but they are not enough. A good multi-zone installation requires a complete evaluation.

Installing a single head hoping to treat the entire dwelling

In some dwellings, a single unit may suffice. In others, it will leave uncomfortable areas. Enclosed rooms, corridors, stairs, and load-bearing walls reduce natural air circulation. A 2-Zone - 2-Head configuration allows for better distribution of comfort.

Placing the unit solely according to available space

The empty wall is not always the best wall. Airflow, air intake, maintenance access, furniture, windows, doors, and conduit passage must be considered.

Neglecting condensation

In cooling mode, a wall-mounted unit produces water. If the drain is poorly designed, problems can quickly appear: noise, humidity, backflow, or leaks. A good slope and a clean installation are essential.

Choosing an inadequate capacity

A system that is too small may run continuously without achieving desired comfort. A system that is too large may create short cycles, unstable temperatures, and less effective dehumidification. Sizing must be done according to the rooms, insulation, sun exposure, and actual usage.

Forgetting HVAC maintenance

Filters must remain accessible. The indoor unit must be cleanable. The outdoor unit must have sufficient clearance. A well-maintained system retains its performance and lifespan better.

AirGreen's role in selection and execution

Our team supports clients from the initial assessment. For a GREE FREE MATCH R32 Dual-Zone heat pump, we first validate the needs: which rooms need to be treated, how they are used, desired temperatures, outdoor unit constraints, and possible technical routes for conduits.

Then, we recommend the most logical configuration. In this project in Saint-Laurent, the 2-Zone - 2-Head solution met a clear need: to improve comfort in two areas without compromising interior space. The installation visible in the photo reflects this preparatory work: a well-placed unit, a discreet result, and coherent integration with the room.

We have carried out similar projects in Montreal, Laval, Longueuil, on the North Shore, and the South Shore, in condos, townhouses, duplexes, and single-family homes. Each building has its constraints. It is this field experience that allows us to avoid common mistakes and deliver durable installations.

Subsidies and eligibility: an essential verification according to the exact model

Clients considering a heat pump installation often want to know if their project might be eligible for a subsidy. Depending on the exact model, the combination of indoor and outdoor units, capacity, certifications, and current criteria, an installation may be eligible for certain programs applicable in Quebec.

For a GREE FREE MATCH R32 system, it is important to validate the precise model numbers and program requirements at the time of submission. At AirGreen, we help clients retain the necessary information, such as technical sheets, invoices, and installation details, to facilitate the process when the system is eligible.

Practical tips after installation

Once the wall-mounted heat pump is installed, a few simple habits can lead to better performance:

  • clean filters regularly;
  • avoid blocking the unit with tall furniture or curtains;
  • adjust the vanes according to the season;
  • use both zones intelligently rather than overloading a single head;
  • keep doors open when you want to promote air circulation;
  • plan periodic HVAC maintenance to preserve performance;
  • monitor any unusual changes in noise, odor, or drainage.

These simple actions help maintain good comfort and extend the system's lifespan.

A result that improves comfort without cluttering the space

This project in Saint-Laurent clearly demonstrates what a well-planned multi-zone installation can offer. The visible wall unit integrates into a renovated living space without detracting from its aesthetics. It allows for treating a significant area of the dwelling, while the second head complements comfort in another room. The client thus obtains a flexible, efficient, and adapted solution for their home's reality.

A GREE FREE MATCH R32 DualZone is particularly attractive for homeowners who want to avoid compromises: not overloading the exterior facade, not multiplying appliances, not sacrificing interior appearance, and not relying on a single diffusion point for the entire home.

Why choose AirGreen for a DualZone installation in Saint-Laurent

Choosing AirGreen for an HVAC installation in Saint-Laurent means choosing a team that understands the realities of the field in Greater Montreal. We know that each project must be handled with precision: interior configuration, exterior constraints, finish, performance, maintenance, and post-installation support.

Our approach is based on a combination of technical rigor and practical understanding of residential comfort. We install heating and air conditioning systems that must operate efficiently but also integrate seamlessly into clients' daily lives.

This installation of a GREE FREE MATCH R32 DualZone 2-Zone 2-Head heat pump in Saint-Laurent perfectly illustrates this approach: a tailored solution, careful execution, discreet integration above a renovated living room, and a system capable of providing precise comfort in two zones of the home. For homeowners in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this is the type of installation that shows why good HVAC planning makes all the difference.

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.

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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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