A multi-zone installation designed for a Boisbriand home where each room had its own needs
In Boisbriand, on the North Shore, our AirGreen team recently completed a full HVAC installation of a GREE FREE MATCH R32 5-Zone heat pump with 5 wall-mounted heads, a project designed to provide precise, room-by-room comfort in a residence where heating and cooling needs varied greatly depending on the orientation, floor, and use of each space.
The image of this installation perfectly illustrates one of the most important aspects of the project: a GREE wall-mounted head installed above a large window, in a confined space, with a perfectly integrated line pass using a discreet finishing molding. This type of installation requires much more rigorous planning than a standard wall mount. It's necessary to consider available height, required clearance for maintenance, air circulation, interior aesthetics, duct routing, and condensate drainage.
In this specific case, the client was looking for a solution capable of stabilizing the temperature in several zones of the house without multiplying outdoor units. The GREE FREE MATCH R32 multi-zone heat pump proved to be a particularly well-suited solution: a single outdoor system, five indoor units, independent room management, and modern technology using R32 refrigerant, known for its better environmental performance compared to several previous generations of refrigerants.
For a residence located in Boisbriand, where winters are demanding and summers can become very humid, choosing a multi-zone system is not just a matter of comfort. It is also a strategic decision to reduce temperature variations, improve energy efficiency, and avoid overly hot or cold areas in the house.
The main challenge: integrating 5 wall-mounted heads without compromising aesthetics or performance
Installing a 5-Zone heat pump requires a very different approach than a simple wall-mounted system. Each indoor head must be positioned according to several technical criteria: room volume, airflow direction, proximity to windows, wall structure, accessibility for refrigerant lines, drainage, electrical supply, and visual impact.
In this Boisbriand house, one of the most delicate locations was the one visible in the photo. The GREE wall-mounted head was installed very close to the ceiling, above a window dressed with a blind. The available space was limited but sufficiently well utilized to allow for functional clearance around the unit. The ducts were routed laterally, with a molding matching the wall, to preserve a clean and professional finish.
This detail may seem simple to a non-specialized observer, but it perfectly summarizes the difference between an ordinary installation and a well-thought-out HVAC installation. A wall-mounted unit should never be placed only "where there's room left." It must be positioned to ensure good air distribution, avoid direct obstacles, limit vibrations, allow access to filters, and guarantee adequate condensate drainage.
In a five-head configuration, these decisions must be repeated and harmonized throughout the house. Each zone influences the overall behavior of the system. An incorrect pipe length, an inadequate drain slope, or a poorly oriented indoor unit can create comfort imbalances or reduce system efficiency.
Why the GREE FREE MATCH R32 model was suitable for this project
The GREE FREE MATCH R32 range is designed for multi-zone installations where multiple indoor units are connected to a single outdoor unit. In this Boisbriand project, this configuration offered several concrete advantages:
- A single outdoor unit to supply the five indoor zones.
- Independently adjustable temperature in each equipped room.
- Reduced outdoor clutter compared to multiple separate systems.
- A better-suited solution for homes with multiple bedrooms, offices, or distinct living spaces.
- Technology using R32, a modern refrigerant used in several new generation systems.
- Greater flexibility to adapt comfort to the actual habits of occupants.
For an owner who wants to air-condition a living area, bedrooms, and possibly a home office, a 5-Zone heat pump is often more logical than a central system, especially when the house is not equipped with an existing duct network or when ductwork would be too invasive.
The GREE FREE MATCH R32 system also allows for better management of rarely used rooms. For example, a guest bedroom or office can be set differently from the living room or master bedroom. This independence improves comfort while avoiding unnecessary heating or cooling of the entire house at the same level.
A wall-mounted head above a window: what to check carefully
The installation visible in the photo shows a frequent situation in homes in Montreal, Laval, Longueuil, the North Shore, and the South Shore: available wall space is sometimes limited by windows, curtains, blinds, closets, or architectural elements. Installing a wall-mounted head above a window can be an excellent solution, but only if certain conditions are met.
In this project, our team checked several elements before validating the location:
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Upper clearance near the ceiling
The head must be able to properly draw in air from above. A unit too close to the ceiling risks losing efficiency and becoming more difficult to maintain. -
Airflow direction
The airflow should not be blocked by the blind, window frame, or a surface too close. The goal is to project air into the room, not directly onto an obstacle. -
Refrigerant line routing
The conduits must exit cleanly, without excessive curves, mechanical stress, and with an aesthetic finish. -
Condensate drainage
An appropriate slope is essential to prevent backflow, water droplets, or odors related to poor drainage. -
Access to filters and HVAC maintenance
Even if the unit is close to the ceiling, the client must be able to open the panel, remove the filters, and perform regular cleaning. -
Visual integration
In a finished room, especially near a window, moldings and exposed passages must be aligned, clean, and discreet.
This type of detail is particularly important in homes where owners want an efficient solution without giving the impression that the equipment was added improvised.
Planning a five-head system: a decisive step
Before installation, we evaluated the residence's configuration to determine how to distribute the five heads. A multi-zone heat pump must be carefully sized. It's not enough to randomly add BTUs. It's essential to understand each zone's thermal load, sun exposure, insulation, ceiling height, presence of large windows, and actual room usage.
In a Boisbriand house, some rooms may be more exposed to the sun in the afternoon, while others remain colder in winter. An upstairs bedroom may accumulate heat in summer, while a ground-floor space may remain more temperate. A well-installed 5-Zone system can correct these discrepancies with precision.
At AirGreen, we pay particular attention to the following elements during design:
- The total length of the refrigerant lines.
- The distance between the outdoor unit and each indoor head.
- The necessary wall penetrations.
- Exterior protection for the conduits.
- The position of the outdoor unit to limit noise and facilitate maintenance.
- Management of condensation drains.
- Compliance of the electrical supply.
- Acoustic comfort in the bedrooms.
- The final appearance, both indoors and outdoors.
In this project, choosing a GREE multi-zone solution avoided the addition of several outdoor condensers. For a homeowner, this represents a considerable advantage: less visible outdoor equipment, less occupied space, a more orderly appearance, and simplified maintenance.
The role of R32 in new HVAC installations
The GREE FREE MATCH R32 model uses R32 refrigerant, which is increasingly common in modern residential air conditioning and heating systems. For homeowners comparing different heat pump or wall-mounted air conditioner options, this feature is worth considering.
R32 is used to improve the overall performance of equipment and reduce environmental impact compared to several older refrigerants. In a context where customers are looking for more efficient, responsible, and compliant appliances with current standards, this technological choice gives the GREE system a significant advantage.
However, it is important to remember that any refrigerant handling must be carried out by qualified technicians. A multi-zone installation involves precise connections, rigorous vacuuming, leak tests, and professional commissioning. A system that performs well on paper can lose much of its efficiency if the installation is poorly executed.
This is why AirGreen rejects approximate approaches. We do not view an HVAC installation as a simple equipment placement, but as a complete system that must function correctly for many years.
Mistakes to avoid with a 5-Zone heat pump
A five-head system can offer exceptional comfort, but only if it is well-designed. Here are the most common mistakes we see when a project has not been planned by an experienced team:
Choosing locations based solely on appearance
Aesthetics matter, but they should never be the only criterion. A wall-mounted head placed too close to an obstacle, a ceiling, or furniture can poorly distribute air. In the Boisbriand project, integration above the window was technically validated before being visually finalized.
Neglecting drains
In a multi-zone installation, each indoor unit produces water in cooling mode. If the drainage slope is poor, problems can appear quickly: noise, odors, leaks, wall stains, or operational interruption.
Underestimating piping lengths
Lengths between the outdoor unit and the five heads must comply with manufacturer limits. Poor planning can impair performance, complicate commissioning, or unnecessarily increase costs.
Installing inadequate capacity per room
A head that is too powerful can create short cycles and discomfort. A head that is too weak may never reach the requested temperature. The right strategy is to adapt each zone to its reality.
Forgetting future maintenance
A device must be accessible. Filters must be removable, units must be cleanable, and the outdoor unit must remain accessible for seasonal HVAC maintenance.
Clean execution, from the interior wall to the exterior
In the photo, we notice a neat interior installation: the unit is well-aligned, the side molding is cleanly installed, and the duct routing is well-controlled. These details matter. In an inhabited house, the perceived quality of an installation depends as much on its operation as on its finish.
Our technicians worked to minimize visual impact while adhering to technical requirements. This includes aligning the ducts, choosing the most logical path, securely fastening components, and checking each zone during commissioning.
For a 5-Zone system, final startup is an essential step. Each head must be tested individually, then in the context of the complete system. We check cooling mode operation, damper behavior, control response, drainage, connection stability, and outdoor unit reaction.
This rigor is particularly important in multi-zone projects, as problem symptoms can sometimes appear in only one zone while the cause stems from the overall system balance.
Comfort obtained after installation
Once the GREE FREE MATCH R32 5-Zone heat pump was commissioned, the client was able to enjoy much more precise control over indoor comfort. Rooms that overheated in summer could now be cooled independently. Colder spaces could benefit from targeted heating without forcing the entire house to follow the same setting.
This type of result is one of the main reasons why multi-zone systems are gaining popularity in Boisbriand, Laval, Sainte-Thérèse, Blainville, Rosemère, and several areas of the North Shore. Homes are not always designed to provide uniform temperature naturally. Additions, large windows, multiple floors, finished basements, and new telework habits create more precise needs.
With five wall-mounted heads, the client now has a flexible solution that adapts to their lifestyle. A bedroom can remain cooler at night, an office can be heated only during work hours, and the main area can maintain a stable temperature on hot days.
Subsidies, energy efficiency and added value
Subsidy programs can vary depending on models, capacities, certifications, and the rules in effect at the time of purchase. For clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore, it is always recommended to validate the eligibility of the chosen system before installation. At AirGreen, we assist our clients in this verification to provide them with the necessary information for their procedures.
In the case of a multi-zone system like the GREE FREE MATCH R32, the benefit is not limited to potential financial aid. The main value also lies in daily comfort, reduced temperature fluctuations, the ability to better control used rooms, and general efficiency improvement compared to portable or poorly adapted solutions.
A well-executed installation can also increase a property's appeal. Buyers are increasingly looking for homes equipped with efficient, modern, and well-integrated heating and cooling systems. A five-zone system, properly installed, is a tangible advantage.
Practical Tips for Homeowners Considering a Multi-Zone Installation
Before choosing a 5-Zone heat pump, it's useful to consider the actual use of each room. Do some zones need to be tempered all day? Are some bedrooms only used in the evening? Is there a home office? A room above the garage? Large south or west-facing windows?
This information allows for a more precise system design. Here are some tips we often give our clients:
- Don't just choose the number of heads based on the number of rooms. Analyze the actual thermal needs.
- Plan the location of the units before interior finishing work, if possible.
- Avoid placing a head directly facing a bed or main armchair.
- Ask for a clear explanation of the duct routing before installation.
- Verify that the drains will be installed with adequate slope.
- Plan for regular filter maintenance to maintain performance.
- Choose a contractor who is knowledgeable about multi-zone systems, not just simple wall-mounted units.
These tips apply as much to Boisbriand as to Montreal, Laval, Longueuil, on the North Shore or the South Shore. A good system always starts with a good analysis.
Why Call AirGreen for a GREE Multi-Zone Installation
AirGreen regularly performs installations of wall-mounted heat pumps, wall-mounted air conditioners, and multi-zone systems in Greater Montreal. Our field experience allows us to anticipate difficulties: finished walls, windows close to the ceiling, co-ownership constraints, long piping distances, complex drains, limited exterior access, choice of outdoor unit locations, and aesthetic requirements of homeowners.
In this project in Boisbriand, our role was to deliver a complete solution: analysis, equipment selection, positioning of the five heads, clean installation, connections, commissioning, and usage advice. The result is a discreet, functional multi-zone system adapted to the reality of the house.
A GREE FREE MATCH R32 5-Zone heat pump can offer excellent comfort, but its performance directly depends on the quality of the installation. That's why we place as much importance on visible details as on elements hidden in walls, ducts, and connections.
For homeowners in Boisbriand and the surrounding areas considering a multi-zone HVAC installation, this project demonstrates that it is possible to achieve a solution that is technical, aesthetic, and durable. With good planning, five zones can be integrated without visually weighing down the house, while providing precise comfort in each space.