An HVAC installation in Laval-des-Rapides where the upgrade had to respect the existing setup
In Laval-des-Rapides, AirGreen completed a DoubleZone GREE FREE MATCH R32 heat pump installation, configured as 2 zones and 2 heads, in a particularly interesting context: adding a new GREE system near an old Fujitsu outdoor unit already present on the brick wall. The project photo clearly shows this reality. You can see the new GREE outdoor unit installed on sturdy wall mounts on the left, while an old Fujitsu Halcyon Inverter unit remains visible on the right on its own metal support. Between the two devices, the refrigerant lines, wiring, electrical boxes, and line covers show an installation that required precise planning.
This type of work is common in the residential neighborhoods of Laval, especially in Laval-des-Rapides, where several buildings have already received wall-mounted systems over the years. When an owner wants to upgrade their comfort with a more recent, more flexible, or better-suited heat pump, it is not enough to just install a new machine randomly. You have to work with what already exists: old supports, line routes, electrical supply, clearances, access for maintenance, exterior appearance, and masonry constraints.
In this project, our team had to integrate a DoubleZone – 2 zones – 2 heads solution while considering the available space on a brick wall, the presence of a window, an existing system already installed, and the need to maintain a clean exterior finish. The new GREE FREE MATCH R32 was positioned to respect the necessary clearances, ensure adequate airflow, and allow for future maintenance without excessive difficulty.
This project clearly illustrates AirGreen’s approach: offering a complete, thoughtful, durable, and well-integrated HVAC installation, whether in Montreal, Laval, Longueuil, on the North Shore or the South Shore.
Why the GREE FREE MATCH R32 was suitable for this DoubleZone project
The GREE FREE MATCH R32 is a multizone solution designed for residences where several rooms need heating and cooling with better control. In a 2 zones and 2 units configuration, one outdoor unit can power two indoor units, each installed in a strategic zone of the house or apartment. This flexibility meets the needs of owners who want to improve their comfort without multiplying outdoor systems.
In Laval-des-Rapides, this choice was particularly relevant because several buildings in the area have divided layouts: separate living rooms, distant bedrooms, distinct floors, apartments with corridors, rooms differently exposed to the sun, and spaces that do not temper uniformly with a single heating or cooling source.
Two zones for better targeted comfort
A DoubleZone system allows managing two spaces independently. One unit can serve the main area, while a second can be installed in a bedroom, an office, an upper floor, or another less well-served zone. The client can thus adjust each zone according to the actual use of the rooms.
This independent management improves comfort, but it also helps avoid some common mistakes. For example, with a single wall unit, occupants sometimes have to set the temperature lower or higher than necessary to compensate for a distant room. Result: one area becomes too cold or too hot while another remains uncomfortable. With a DoubleZone heat pump, the system better responds to the building's reality.
The choice of refrigerant R32
The FREE MATCH R32 model uses the refrigerant R32, found in many modern HVAC systems. This refrigerant is valued for its efficiency and for its lower global warming potential compared to some older refrigerants. For a homeowner replacing or upgrading an old system, this detail matters. It is a more current choice, better aligned with recent market standards.
In an installation like this, switching from an old device to a more modern solution is not just about the brand. It is also necessary to consider refrigerant technology, seasonal performance, noise level, compatibility of indoor and outdoor units, installation constraints, and commissioning requirements.
A coherent solution for houses and plexes in Laval
In Laval, many residential buildings have exterior brick walls, already occupied electrical entries, narrow side spaces, and limited locations for outdoor units. The GREE FREE MATCH R32 is well suited for this type of project when properly sized and installed. Its multi-zone configuration offers superior comfort without necessarily adding several independent outdoor units.
In the case shown in the photo, the outdoor installation had to be planned in relation to the old unit nearby. The wall mounts, lines, electrical boxes, and line covers had to form a logical, stable, and safe whole. For a homeowner, this work invisible at first glance is essential: a clean installation today must also remain accessible, reliable, and easy to maintain in the years to come.
Grants and validation of the exact model
Grant programs for heat pumps can represent a significant advantage for homeowners, but eligibility always depends on the exact model, the combination of units, applicable certifications, and the criteria in effect at the time of installation. For a multi-zone system like the GREE FREE MATCH R32, the entire configuration must be validated, not just the product line name.
At AirGreen, we help our clients better understand this step. When the installed system is eligible, we provide the necessary information, detailed invoices, and useful documents to facilitate the process. This is an important aspect for clients from Montréal, Laval, Longueuil, the North Shore, and the South Shore who compare not only the purchase price but also the actual cost after subsidy.
The technical specifics of this outdoor installation
The project photo at Laval-des-Rapides is rich in technical details. It shows a light brick wall, a window above the work area, a white vertical line cover on the left, a new GREE outdoor unit on a wall support, the old Fujitsu unit on an independent support, several insulated lines between the devices, and the electrical boxes necessary for the safe operation of the system.
Installing a new unit near an old system
The presence of the old Fujitsu unit required special coordination. When a new system is installed near an old device, several elements must be checked:
- available space for the new wall support;
- clearance between units;
- air circulation around each device;
- the position of the old lines;
- the location of electrical boxes;
- the possibility of adding a new clean line cover;
- future access for maintenance;
- the visual impact on the facade or side wall.
Poor positioning can lead to problems with air recirculation, vibrations, difficult access, or messy exterior finishing. In this project, the new GREE unit was placed to maintain functional clearance while using the wall space efficiently.
Wall supports adapted to the masonry
The outdoor unit is installed on metal supports fixed to the brick wall. This type of installation requires a solid and appropriate fastening. The weight of the unit, vibrations, freeze-thaw cycles, wind, snow, and mechanical stresses must be taken into account.
Inadequate fastening can cause vibrations, noise, sagging, or damage to the masonry. At AirGreen, we place great importance on the choice of anchors, leveling of the support, and the overall stability of the installation. An outdoor unit must be perfectly stable to function properly and limit stress on the refrigerant lines.
The management of refrigerant lines
The visible lines between the devices and the line covers show the importance of well-organized routing. For a DoubleZone heat pump, the lines must connect the outdoor unit to the two indoor heads. They must be insulated, protected, and installed without excessive bends. Each connection must be carefully prepared, tested, and validated before commissioning.
In an installation on a brick wall, the routing of lines also requires aesthetic attention. White line covers protect the conduits while improving the exterior appearance. Their vertical positioning, visible in the photo, directs the lines toward interior areas while maintaining a cleaner finish than exposed conduits.
The importance of electrical boxes and compliance
Several electrical boxes can be seen near the units. These components are essential for the safety and compliance of the installation. A heat pump requires an appropriate power supply, suitable protections, and connections made according to applicable standards.
In a renovation, it is often necessary to work with what already exists. There may be an old power supply, a box already in place, or an electrical route to adjust. Our role is to ensure that the new installation meets the manufacturer’s requirements and local standards, without improvising or overloading an existing setup.
A clean and durable exterior finish
On a brick wall, the finish matters a lot. The line covers must be straight, well secured, and properly sealed. Wall penetrations must be protected against water, air, and leaks. The lines must be neatly grouped. A successful outdoor installation must remain sturdy after several winters.
In Laval-des-Rapides, as in many areas of Laval and Montreal, buildings are exposed to freeze-thaw cycles, humidity, snow accumulation, and significant temperature variations. Neglected finishing can deteriorate quickly. A well-executed finish protects the client’s investment.
The essential steps carried out by AirGreen
A quality HVAC installation follows a precise method. Even though each project is different, some steps remain essential.
Analysis of the site and existing system
Before installation, we analyze the wall condition, the position of old equipment, possible routes for the lines, the location of indoor units, the customer's needs, and electrical constraints. In this project, the presence of an old Fujitsu unit required extra attention to avoid space conflicts and ensure a clean integration of the new system.
Choosing the location of the GREE unit
The location of the outdoor unit influences performance. It must be installed in an area where air can circulate freely. It must also be accessible for maintenance, without obstructing openings, passages, or existing building elements. The support must be level, stable, and adapted to the structure.
Installing supports and fixing on brick
Once the location is validated, the metal supports are installed precisely. Leveling is important to avoid vibrations and promote stable operation. The fasteners must be suitable for the masonry and installed carefully.
Routing and protecting the lines
The refrigerant lines, communication wiring, and drainage are then routed according to the established plan. The ducts are insulated and protected. Line covers are installed to preserve the building's appearance and extend the lifespan of the outdoor components.
Leak test and vacuuming
Vacuuming is a fundamental step. It removes air and moisture from the refrigerant circuit before startup. A poorly prepared circuit can reduce performance, increase wear, and cause long-term problems. We also perform the necessary tests to confirm the tightness of the connections.
Commissioning of the two zones
Once the connections are validated, each indoor unit is tested. We check communication with the outdoor unit, blowing temperatures, heating and cooling modes, drainage, and control response. The customer then receives the necessary explanations to use their system effectively.
What this installation changes for the customer
The customer from Laval-des-Rapides now benefits from a more flexible solution, better suited to two distinct zones. This type of installation improves comfort management, especially in homes where a single indoor unit is not enough to stabilize the temperature everywhere.
More evenly distributed comfort
With two indoor units, the system can meet the needs of two separate spaces. This reduces temperature differences and allows for more comfortable daily use. One zone can be adjusted according to occupancy, while the other remains at a different temperature.
Better energy use
Zoning allows you to avoid unnecessarily conditioning rarely used spaces. This approach can contribute to better-controlled consumption, especially when the system is used with reasonable settings and well-maintained filters. A modern heat pump works best when it is properly sized, well installed, and well used.
A more current system
Upgrading with a GREE FREE MATCH R32 allows the customer to switch to recent technology, with a multi-zone configuration adapted to their needs. For many owners, this transition represents a significant improvement over an old single-zone system or end-of-life equipment.
Practical advice for Laval owners considering a multi-zone installation
This project provides several useful lessons for owners in Laval, Montreal, Longueuil, the North Shore, and the South Shore.
Do not install a new unit without analyzing the old system
When an old device is already present, it is necessary to check whether it should be removed, temporarily kept, or bypassed. Old line routes are not always reusable. Old supports do not always fit new units. A professional analysis avoids unpleasant surprises.
Plan for future maintenance
An outdoor unit must remain accessible. Panels must be able to be opened, components inspected, and cleaning performed. An installation that is too tight or poorly positioned can complicate future interventions.
Protect the lines from weather
Outdoor lines must be protected. Sun, snow, ice, wind, and temperature variations can damage insulation and exposed ducts. Line covers are not just aesthetic: they also play a protective role.
Check the sizing
The choice of a DoubleZone system should be based on the actual needs of the rooms. Too low a capacity will not perform well during extreme periods. Too high a capacity can create short cycles and reduce comfort. Proper sizing remains one of the foundations of a successful installation.
Compare the quotes in detail
The price of a wall heat pump or a wall air conditioner should never be evaluated without considering what is included: mounts, line covers, duct lengths, electrical work, vacuuming, commissioning, warranty, removal or management of an old device, assistance with subsidies, and after-sales service.
AirGreen: HVAC expertise tailored to modernization projects
This GREE FREE MATCH R32 DoubleZone installation in Laval-des-Rapides clearly demonstrates the importance of a comprehensive approach. It was not just about adding a new outdoor unit. It was necessary to integrate a modern system into an environment already occupied by old equipment, respect the constraints of the brick wall, organize the lines, protect the components, and ensure a durable finish.
At AirGreen, we carry out installations of heat pumps, wall air conditioners, single-zone and multi-zone systems throughout the greater Montreal, Laval, Longueuil, North Shore, and South Shore areas. Our experience with houses, condos, plexes, and small residential buildings allows us to tailor each installation to the actual building rather than applying a generic solution.
In Laval-des-Rapides, the result is a clean, stable, and well-thought-out outdoor installation, with a new GREE unit positioned on a solid wall mount, protected lines, and a 2 zones – 2 heads configuration designed to improve indoor comfort. For the client, this means better temperature control, a more flexible solution, and an installation carried out with attention to detail.
A GREE FREE MATCH R32 DoubleZone heat pump can be an excellent choice for homeowners who want to upgrade their comfort without multiplying outdoor equipment. However, the quality of the result depends on the analysis, location, line routing, electrical compliance, and commissioning. It is precisely in these aspects that AirGreen's expertise makes the difference.