Installation of a GREE FREE MATCH R32 DoubleZone heat pump in Bois-des-Filion: a 2-zone solution installed on a wall bracket in winter conditions
AirGreen installs a GREE FREE MATCH R32 DoubleZone heat pump in Bois-des-Filion: 2 zones, raised wall bracket, precise comfort, and HVAC installation adapted for winter.
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A GREE DoubleZone Installation Adapted to the Constraints of a Bois-des-Filion Home
In Bois-des-Filion, on the North Shore, our AirGreen team installed a GREE FREE MATCH R32 DoubleZone heat pump, configured with 2 zones and 2 wall-mounted units to provide more precise comfort inside the residence. This project is particularly interesting because it combines several elements that we often encounter in the field: an exterior brick wall, limited available space, a high-level installation, the presence of snow on the ground, ducts to be neatly organized, and an outdoor unit to be positioned stably, accessibly, and durably.
The job site photo shows the GREE outdoor unit installed on a robust wall bracket, fixed near a brick wall and above ground level. We can also see accumulated snow, insulated refrigerant lines, drains, wiring, and finishing equipment around the unit. This image perfectly summarizes the reality of an HVAC installation in Quebec: it's not enough to choose a good machine; it must also be installed taking into account the climate, the building's architecture, and long-term maintenance conditions.
In this specific case, choosing a DoubleZone heat pump was logical. The residence required comfort distributed across two distinct areas, rather than a single centralized blowing point. A configuration with 2 wall-mounted units allows for better management of temperature differences between rooms, especially when the house has multiple divisions, floors, or areas that are not used at the same times of the day.
The GREE FREE MATCH R32 model integrates well into this type of project because it allows multiple indoor units to be connected to a single outdoor unit. For the owner, this means less clutter outside and more flexible control inside. For our team, it requires a more structured installation: each head must be correctly positioned, each line must be well connected, and the outdoor unit must be installed to ensure good ventilation, effective drainage, and perfect stability.
An Elevated Wall Bracket: An Essential Detail for a North Shore Heat Pump
One of the most important aspects of this installation in Bois-des-Filion is the location of the outdoor unit. Rather than placing the machine directly on the ground, our technicians installed it on a wall bracket. This choice is particularly relevant in regions where snow accumulation, ice, and defrost water can impair the proper functioning of a heat pump.
Why Elevate the Outdoor Unit
In Quebec, an outdoor unit installed too low can quickly become surrounded by snow during winter. When air can no longer circulate freely around the unit, performance decreases, defrost cycles can become more frequent, and wear and tear can increase. A wall bracket installation helps keep the unit clear, especially when the terrain around the house receives blown or accumulated snow.
In this installation, the visible presence of snow on the ground confirms the importance of this decision. The GREE unit is placed high enough to maintain useful clearance under the unit, while remaining accessible for inspections and HVAC maintenance. The bracket must be solidly fixed to the appropriate structure, respecting the load of the unit, vibrations, and manufacturer's requirements.
A good wall bracket installation allows for:
- reducing the risk of obstruction by snow;
- facilitating the flow of defrost water;
- improving access to service components;
- limiting vibrations transmitted to the ground;
- maintaining a cleaner installation around the house;
- extending the equipment's lifespan with proper maintenance.
A Brick Wall Requiring Rigorous Fastening
The exterior wall visible in the photo is brick, a common material in Bois-des-Filion, Montreal, Laval, Longueuil, and several areas of the North Shore and South Shore. Installing an outdoor unit on a brick wall requires particular attention. It is necessary to choose the right anchor points, avoid weakened areas, consider the structure behind the cladding, and ensure that the unit remains stable despite operating cycles, vibrations, and temperature variations.
Our technicians always evaluate the wall support before fastening. The goal is to achieve a solid installation, but also to limit the risk of sound transmission indoors. A poorly secured unit can cause unpleasant vibrations, especially when installed near a living room, bedroom, or finished basement.
In this project, the wall bracket was installed taking into account the brick, available clearance, line routing, and opening locations. The result allows the unit to function correctly while remaining well integrated into the outdoor environment.
The Importance of Side and Front Clearance
A GREE FREE MATCH R32 heat pump must be able to draw in and expel air without obstruction. In the photo, the large front grille of the fan and the side fins of the heat exchanger are clearly visible. These areas must remain clear for the unit to exchange heat efficiently.
In a residential yard or near a wall, the positioning of the unit must be carefully studied. A unit placed too close to an obstacle can lose efficiency, run longer, and generate more noise. Conversely, good clearance allows the system to breathe better, which contributes to indoor comfort and overall performance.
Two Zones, Two Heads: A Smarter Comfort Strategy
The DoubleZone configuration addresses a common problem in homes: a single wall-mounted unit is not always sufficient to cover all rooms equally. Even when a unit is powerful, air does not always effectively pass through corridors, closed doors, or changes in level.
With a GREE FREE MATCH R32 DoubleZone heat pump, each indoor head serves a specific zone. This allows for temperature adjustment according to the actual use of the rooms. For example, one zone can be dedicated to the living room or main area, while the other can handle a bedroom, an office, a floor, or a more distant section of the house.
This approach offers several concrete advantages:
- better distributed comfort;
- reduced temperature differences;
- independent management of each zone;
- better adaptation to occupants' schedules;
- a single outdoor unit for two indoor units;
- a more discreet installation than a separate system for each zone.
For homeowners in Bois-des-Filion, this type of solution is often very appealing when the house has several closed rooms or when comfort needs vary from one floor to another.
R32: A Modern Refrigerant Requiring Precise Work
The GREE FREE MATCH R32 model uses R32 refrigerant, a technology found in several recent HVAC systems. This type of refrigerant must be handled methodically and professionally. The steps of connection, vacuuming, leak testing, and commissioning are essential to ensure the proper functioning of the system.
In a 2-zone installation, rigor is even more important. Refrigerant lines must be correctly sized, protected, and insulated. Connections must be clean, flares well-made, and tests conducted precisely. A small error in the refrigeration part can affect the performance of the entire system.
At AirGreen, we pay particular attention to these details, as they are not always visible once the installation is complete, but they determine the quality of the result for years to come.
Refrigerant Line and Wiring Routing
In the photo, we can see the lines and conduits around the outdoor unit. In a multi-zone installation, the organization of these elements is essential. The two indoor heads require connections to the outdoor unit, which implies careful route planning.
The goal is to reduce unnecessary lengths, avoid excessive bends, protect conduits from weather, and maintain a clean exterior finish. The lines must be properly insulated to limit energy losses and prevent unwanted condensation. Communication wiring between units must also be well protected and installed according to applicable requirements.
A well-organized installation also facilitates future interventions. When a technician needs to inspect the unit, check pressures, access connections, or perform maintenance, a clean and logical setup makes the work more efficient.
Drainage and Defrost Water: A Real Winter Challenge
In heating mode, an outdoor heat pump performs defrost cycles. These cycles produce water that must drain properly. If the unit is too low or if water accumulates under the unit, a layer of ice can form and impair operation.
The wall-mounted installation visible in this project allows for better management of this reality. The clearance under the unit helps water drain and limits the risk of accumulation directly under the base. However, the space under the unit must be kept clear during winter to prevent compacted snow from blocking natural drainage.
We always explain this point to clients, as proper use after installation is part of the system's durability. A correctly installed wall-mounted heat pump must also be correctly maintained, especially after heavy snowstorms.
A High Installation That Preserves Ground Space
In several North Shore properties, outdoor space is precious. Installing the unit on a wall bracket frees up ground space, facilitates passage around the house, and limits clutter near windows or access points. In the case of this residence in Bois-des-Filion, the unit is placed high up, near the wall, avoiding the creation of a significant obstacle on the ground.
This approach can be particularly useful when space is limited, when the terrain is uneven, or when the owner wishes to keep an outdoor area more clear. However, the choice must be validated by a professional, as not all walls are suitable for wall-mounted installation, and not all locations allow good access for maintenance.
Mistakes to Avoid in a DoubleZone Installation
A multi-zone HVAC installation must be meticulously planned. Here are the mistakes we systematically avoid in this type of project.
Installing the unit too close to the ground
In a climate like Bois-des-Filion's, a unit placed too low risks being obstructed by snow. The elevated wall bracket is often a very relevant solution, provided it is correctly fixed.
Choosing indoor units without analyzing the zones
Two wall-mounted units should be placed according to actual air circulation, and not just based on the appearance of available walls. Good positioning improves comfort and reduces temperature differences between rooms.
Neglecting line insulation
Poorly insulated refrigerant lines can lead to losses, condensation, or efficiency problems. On a GREE FREE MATCH R32 installation, every connection detail matters.
Forgetting maintenance access
An outdoor unit must remain accessible. Even when installed high up, it must be inspectable, cleanable, and maintainable. We plan the location taking into account future maintenance.
Poor management of defrost water
The water produced in winter must be able to drain. If it accumulates under the unit, it can form ice. The bracket, clearance, and positioning are therefore important.
Subsidies and Eligibility: A Point to Check According to the Exact Model
Homeowners installing a heat pump often want to know if their system qualifies for financial assistance. Eligibility depends on the specific model, the installed combination, certifications, capacity, and the criteria of programs in effect at the time of application.
For an installation like this GREE FREE MATCH R32 DoubleZone, we help our clients understand the necessary information: model, invoice, proof of installation, technical data, and application-related documents when the equipment is eligible. As criteria can change, we always validate the details based on the exact installed configuration.
What This Installation Brings to the Client
The result of this project in Bois-des-Filion is a more flexible, better distributed comfort solution adapted to the Quebec climate. The client benefits from a DoubleZone heat pump that manages two sectors of the house without installing two separate outdoor units.
On a daily basis, this means better temperature control, more intelligent zone use, and an exterior integration designed for winter. The machine is positioned high up, the lines are organized, and the installation is designed to operate in real North Shore conditions.
AirGreen Expertise in Bois-des-Filion, Montreal, Laval, and Surrounding Areas
At AirGreen, we install HVAC systems in a variety of environments: single-family homes, condos, duplexes, triplexes, small businesses, and buildings with specific constraints. Our interventions in Bois-des-Filion, Montreal, Laval, Longueuil, on the North Shore and South Shore allow us to quickly recognize the challenges specific to each building.
In this project, our expertise was reflected in several important decisions:
- choice of a 2-zone solution adapted to the interior configuration;
- installation of the outdoor unit on an elevated wall mount;
- fixation adapted to a brick wall;
- management of clearances for ventilation;
- organization of refrigerant lines and wiring;
- consideration of snow and defrosting;
- preparation of a durable and accessible installation for maintenance.
Practical tips for homeowners considering a GREE FREE MATCH R32
Before installing a DoubleZone heat pump, it is recommended to have the house evaluated on site. Surface area is not enough to choose the right system. It is also necessary to analyze the insulation, room orientation, interior divisions, floors, occupant habits, and external constraints.
It is also important to plan the location of the outdoor unit before finalizing the system choice. A good location facilitates maintenance, reduces snow-related risks, and improves performance. In many cases, a wall mount or an elevated support is a better option than a ground installation.
Finally, maintenance should not be neglected. The filters of the wall units must be cleaned regularly, the outdoor unit must be cleared, and periodic professional inspection helps maintain system performance.
A solid installation for lasting comfort on the North Shore
This installation of a DoubleZone GREE FREE MATCH R32 heat pump in Bois-des-Filion demonstrates the importance of planning adapted to the Quebec climate and the realities of the building. The outdoor unit installed on a wall mount, the brick wall, the visible snow, and the connections being finished clearly show that every detail counts.
The client now has an efficient, practical 2-zone system better suited to the residence's actual needs. For homeowners in Bois-des-Filion, Montreal, Laval, Longueuil, the North Shore, and the South Shore, this type of installation represents a serious solution to improve comfort while maintaining a clean, durable, and well-thought-out approach.
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).