Installation of a GREE FREE MATCH R32 DoubleZone Heat Pump in Sainte-Catherine
AirGreen installs a GREE FREE MATCH R32 DoubleZone heat pump in Sainte-Catherine: 2-zone comfort, discreet outdoor unit, protected lines, and neat HVAC installation on the South Shore.
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.
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.
A discreet, clean 2-zone installation perfectly suited to an intimate residential yard
In Sainte-Catherine, on the South Shore of Montreal, our AirGreen team recently completed a particularly interesting HVAC installation: a DoubleZone GREE FREE MATCH R32 heat pump DoubleZone GREE FREE MATCH R32, designed to supply two indoor units from a single outdoor unit. This type of project meets a very common demand in homes in the region: improving comfort in two distinct spaces, reducing reliance on traditional electric heating, and enjoying efficient air conditioning during summer, while maintaining a compact and visually neat outdoor installation.
Upon arrival on site, one detail immediately guided our approach: the outdoor unit had to be installed in a landscaped backyard, surrounded by a wooden fence, vegetation, and limited circulation space. The installation photo clearly shows this context: a GREE outdoor unit installed on an elevated support, in front of a wooden fence, with refrigerant lines protected by a brown line cover that naturally blends into the decor. This kind of environment requires special attention, as a poor placement decision can quickly harm aesthetics, maintenance access, air clearance, or system durability.
At AirGreen, we planned this installation as a true custom project, not just a simple mechanical setup.
Why a DoubleZone GREE FREE MATCH R32 heat pump was relevant for this house
The GREE FREE MATCH R32 is a flexible solution for homes that need to control comfort in more than one room without multiplying outdoor units. In this project in Sainte-Catherine, the goal was clear: to offer a reliable, efficient 2-zone heating and cooling solution well integrated into the house's architecture.
A DoubleZone heat pump allows two indoor wall units to be connected to a single outdoor unit. This brings several concrete advantages:
- better management of comfort room by room;
- a single outdoor unit, so less clutter in the yard;
- better controlled consumption thanks to inverter technology;
- a solution adapted to homes where needs are not the same from one floor to another;
- a visually cleaner installation than a set of two independent systems.
The choice of R32 refrigerant is also an important advantage. This refrigerant fluid is increasingly present in modern wall-mounted heat pump and wall air conditioner systems, notably because it allows good energy performance with an optimized refrigerant charge. For homeowners comparing available options in Montreal, Laval, Longueuil, on the North Shore or the South Shore, it is a factor to seriously consider when choosing a new HVAC system.
An outdoor unit installed in a confined space, without compromising access or aesthetics
One of the most important aspects of this installation was the location of the outdoor unit. In a backyard like this, it is necessary to find the right balance between technical performance and visual integration.
We chose a location against the fence, but respecting the necessary clearances to ensure good air circulation around the unit. A poorly ventilated outdoor unit can lose efficiency, work harder during heat or cold periods, and become noisier over time. In this specific case, the space was sufficient, but it was important to avoid placing the unit too close to plants or enclosing it in a tight corner.
The elevated metal support also plays a crucial role. In Sainte-Catherine, as elsewhere on the South Shore, accumulations of snow, ice, leaves, and ground moisture can affect the durability of a heat pump if the installation is not well planned. By raising the unit, we reduce risks related to water, debris, freezing, and small accumulations at the base of the device.
The installation shown in the photo also demonstrates an important decision: protecting the refrigerant lines with a brown line cover, matching the fence and surrounding siding. This detail may seem minor, but it greatly changes the final result. A quality HVAC installation must be efficient, but also clean, straight, durable, and pleasant to look at.
The challenge of two zones: sizing correctly without overloading
In a DoubleZone system, the choice of total capacity and the distribution between the two indoor heads are crucial. A sizing error can lead to too short cycles, poor dehumidification, uneven comfort, or unnecessarily high consumption.
For this project, our team took several factors into account:
- the actual size of the rooms served;
- the house’s orientation and sun exposure;
- the level of insulation;
- the ceiling height;
- the occupants’ usage habits;
- the cooling needs in summer and heating during colder periods;
- the optimal positioning of indoor heads to promote good air distribution.
A DoubleZone heat pump - 2 zones - 2 heads should not be chosen solely based on the number of rooms. It is important to understand how air actually circulates in the house. A well-placed wall head can effectively cover an open area, while a head installed too close to a hallway, obstacle, or poorly positioned door may deliver less satisfactory results.
This is precisely where AirGreen’s field experience makes the difference. We don’t just look at the machine’s technical sheet. We analyze the house, the available space, installation constraints, and the comfort expected by the client.
A clean installation, designed to last
In the photo, the outdoor unit is positioned on a stable support, with clearance under the device and a well-protected line. These elements are essential for the system's longevity.
During a heat pump installation in Sainte-Catherine, we pay special attention to:
Support stability
The support must be solid, straight, and suitable for the weight of the outdoor unit. A poorly leveled heat pump can cause vibrations, noise, or inadequate condensation drainage in heating mode.
Protection of refrigerant lines
The pipes must be insulated, protected, and routed neatly. The line cover is not just aesthetic: it protects the pipes from UV rays, impacts, rodents, and weather.
Access for HVAC maintenance
An outdoor unit must remain accessible for inspections, cleaning, electrical checks, and service interventions. We avoid locations that make HVAC maintenance difficult or that force a technician to work in an unsafe position.
Drainage and winter conditions
A heat pump used for heating produces frost and triggers defrost cycles. It is therefore necessary to plan for drainage and prevent water from accumulating in problematic areas.
Concrete benefits for owners
After installation, the client benefits from a system capable of managing two comfort zones precisely. This is especially useful in a house where some rooms heat up faster than others, where a floor is more exposed to the sun, or where occupants do not use all rooms at the same time.
The GREE FREE MATCH R32 offers an interesting response to these needs thanks to its inverter modulation. Rather than operating only at full power or shutting off completely, the machine adjusts its operation according to demand. This allows for more stable comfort and better-controlled consumption.
For a family from Sainte-Catherine, this generally means:
- less temperature variation;
- better humidity control in summer;
- quieter air conditioning than an old window air conditioner;
- an effective supplementary heating during much of the cold season;
- a better distribution of comfort in two distinct spaces;
- a backyard that remains clear thanks to a single outdoor unit.
Subsidies and eligibility: a point to verify before purchase
For heat pump installations in Quebec, certain configurations may be eligible for subsidy programs, notably depending on energy efficiency, the exact model, installed capacity, and the criteria in effect at the time of the project.
In the case of a GREE FREE MATCH R32, eligibility must always be confirmed with the exact combination of indoor and outdoor units, as multi-zone systems are evaluated according to their complete configuration. At AirGreen, we assist our clients with this verification before installation to avoid unpleasant surprises.
This is an important point for owners in Montreal, Laval, Longueuil, on the North Shore and the South Shore: two systems that seem similar can have different results in terms of subsidies if the model numbers, capacities, or certifications are not identical.
We therefore always recommend validating:
- the exact model of the outdoor unit;
- the exact models of the two indoor heads;
- the total system capacity;
- energy efficiency certifications;
- the requirements of the applicable program;
- the final invoice and necessary documents after installation.
Common mistakes to avoid with a DoubleZone installation
Installing a DoubleZone heat pump requires more planning than a single-zone system. Here are the common mistakes we often see when projects are poorly prepared.
Choosing the machine based only on price
Price is important, but it should never be the only criterion. A machine that is too small, too large, or poorly suited to the home can cost more in the long run in energy consumption, discomfort, and service.
Neglecting the location of the outdoor unit
Installing an outdoor unit in a corner that is too enclosed, too low, or hard to access can reduce performance and complicate maintenance.
Misplacing indoor heads
A wall-mounted head must be placed according to air distribution, room layout, and lifestyle habits. A poor location can create cold spots, drafts, or uneven comfort.
Forgetting the visual impact
Exposed pipes, misaligned lines, and improvised supports can harm the property's appearance. In this project in Sainte-Catherine, the brown line cover and chosen location helped maintain a discreet finish.
Not checking subsidies before signing
Programs change, amounts vary, and eligibility often depends on technical details. Verification before purchase is essential.
An AirGreen approach focused on detail, from quote to startup
This installation in Sainte-Catherine clearly illustrates our way of working. We don’t just install a machine. We analyze the building, the client’s needs, technical constraints, and the external environment to deliver a complete solution.
Clear coordination before the work
Before installation, we confirm the essential points with the client: the location of the outdoor unit, line routes, the location of the indoor heads, electrical supply, clearances, desired aesthetics, and finishing options. This step helps avoid last-minute decisions on the day of installation.
Careful work during installation
Our technicians ensure that the lines are neatly installed, the unit is securely mounted, connections are made according to best practices, and the system is properly commissioned. The quality of an HVAC installation often depends on invisible details: vacuuming, leak testing, pipe protection, tightening fittings, drainage, and operating parameters.
A commissioning process explained to the customer
Once the GREE FREE MATCH R32 heat pump is installed, we take the time to explain the basic operation: heating and cooling modes, temperature adjustment, optimal use of the two zones, filter maintenance, and seasonal recommendations.
A good system can deliver poor results if the user doesn’t know how to operate it properly. For example, in heating mode, it is often better to maintain a stable temperature rather than turning the system off completely for long periods. In air conditioning, smart use of ventilation and temperature settings improves comfort while limiting consumption.
A solution adapted to the realities of the South Shore
Homes in Sainte-Catherine, like those in Candiac, Delson, Saint-Constant, Brossard, and Longueuil often have similar constraints: landscaped backyards, limited side spaces, close neighbors, aesthetic requirements, and comfort needs spread across several rooms.
Our experience in these areas allows us to anticipate challenges. We know that a homeowner doesn’t just want a high-performance machine. They want a clean, durable, quiet installation that is well placed and easy to maintain.
Why choose AirGreen for a multi-zone heat pump
AirGreen regularly works on projects involving wall-mounted heat pumps, wall air conditioners, multi-zone systems, and complete HVAC installations in Montreal, Laval, Longueuil, on the North Shore and the South Shore. Our strength lies in a simple combination: technical expertise, honest advice, careful installation, and follow-up after the work.
For this project in Sainte-Catherine, the result is a compact, well-integrated installation adapted to the client's reality. The unit is accessible, well cleared, elevated, and protected. The lines are neatly concealed. The outdoor space remains pleasant. And the two indoor zones can now be controlled with efficiency far superior to a traditional solution.
Practical advice for homeowners considering a 2-zone system
Before choosing a DoubleZone heat pump, we recommend taking the time to evaluate the following elements:
-
Identify priority rooms
The two zones must correspond to real comfort needs, not just an approximate division of the house. -
Compare models based on the complete configuration
For a multi-zone system, you need to consider the combination of the outdoor unit + indoor heads, not just a single isolated component. -
Think about winter from the start
The outdoor location must remain accessible despite snow and allow good drainage during defrost cycles. -
Plan the aesthetics of the lines
A well-chosen line cover can transform the final appearance of the installation. -
Confirm the subsidy before installation
Criteria may vary depending on the models and available programs. -
Choose a contractor who understands multi-zone systems
A 2-zone installation requires true mastery of sizing, line lengths, positioning, and commissioning.
An installation that combines comfort, efficiency, and discretion
This GREE FREE MATCH R32 DoubleZone heat pump installation in Sainte-Catherine shows that a well-planned installation can improve a home's comfort without compromising the outdoor layout. The outdoor unit fits neatly into the yard, the lines are protected, the system remains accessible for maintenance, and the occupants now enjoy more precise control in two zones of their residence.
For AirGreen, this type of project represents exactly what a residential HVAC installation should be: a high-performance technical solution, carefully installed, adapted to the home, and designed to last.
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.
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 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.
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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
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.
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).