An HVAC installation in West Laval where outdoor access, stability, and multizone connection made all the difference
In West Laval, our AirGreen team completed the installation of a GREE FREE MATCH R32 DoubleZone heat pump, a 2 zones – 2 heads solution perfectly suited for homes that want to improve comfort in two distinct spaces with a single outdoor unit. This project presented a very interesting context: the outdoor unit had to be installed on a wooden terrace structure, in a relatively narrow space, near a fence, with visible refrigerant connections during the commissioning phase.
The photo clearly shows an important step in the work: the GREE outdoor unit is already positioned on an elevated aluminum base, securely anchored to the terrace. The refrigerant lines are connected, the gauges and testing instruments are in place, and the technicians are performing the necessary checks before finalizing the system. You can also see the two distinct circuits of the multizone system, which clearly illustrates the complexity of a DoubleZone HVAC installation compared to a single-zone installation.
In a residential area like West Laval, many properties have backyards, terraces, narrow side accesses, or nearby fences. Installing a heat pump in this type of environment requires serious planning. It is not enough to place the outdoor unit in the easiest spot. Airflow, access for HVAC maintenance, base stability, drainage, noise, clearances, line routing, and protection against winter conditions must all be considered.
At AirGreen, we carry out this type of project throughout the greater metropolitan area, including Montreal, Laval, Longueuil, the North Shore, and the South Shore. This installation in West Laval highlights a reality often underestimated: the quality of a multizone system depends as much on the choice of the machine as on how it is installed on site.
Why the GREE FREE MATCH R32 was an excellent choice for this DoubleZone installation
The GREE FREE MATCH R32 is a multi-zone solution designed to power several indoor units from a single outdoor unit. In this project, the 2 zones – 2 heads configuration allowed the client to control two spaces separately, without multiplying outdoor units in the yard.
This type of system is particularly interesting for homes where comfort needs are not uniform. For example, one zone may be more exposed to the sun, another may be located on a different floor, or a room may be used mainly in the evening while another is occupied during the day. With two indoor units, the client can adjust the temperature according to the actual use of each space.
The R32 technology also represents a modern choice for a multi-zone wall-mounted heat pump. Used in several new generations of HVAC equipment, this refrigerant is associated with efficient systems well suited to current residential installations. In the case of a residence in Laval-Ouest, where heating and cooling needs vary greatly by season, it was important to offer a reliable, flexible, and durable solution.
An elevated outdoor unit: an essential detail in the Quebec climate
One of the most important elements of this installation is the elevated aluminum base on which the outdoor unit rests. In the photo, you can see that the GREE heat pump is not simply placed on the ground or directly on wooden boards. It is installed on a stable structure, with legs fixed to the deck.
This technical decision is important for several reasons. First, it improves the stability of the equipment. An outdoor unit must remain upright, well-leveled, and securely supported to reduce vibrations and ensure proper operation. Next, the elevation helps protect the device against the accumulation of water, snow, and ice. In Laval, as in Montreal, Longueuil, on the North Shore and the South Shore, winters impose demanding conditions on outdoor equipment.
A unit placed too low can be affected by compacted snow, splashes, frost, or debris accumulated around the terrace. By properly elevating it, clearance is improved and maintenance interventions are facilitated.
The challenge of installing on a wooden terrace
Installing an outdoor unit on a terrace requires great caution. Wood can move over time, react to moisture, expand, contract, or vibrate. So any improvised installation must be avoided. The base must be stable, distribute the load well, and limit vibration transmission to the structure.
In this project in Laval-Ouest, our team evaluated the location to position the unit in an accessible area while respecting the yard’s constraints. The nearby wooden fence also required special attention. An outdoor unit needs enough clearance to breathe properly. If it is too cramped against a fence, wall, or obstacle, its efficiency can be reduced.
The choice of the final location therefore takes several factors into account:
- air circulation around the outdoor unit;
- access to valves and connections;
- terrace stability;
- distance from indoor units;
- protection of refrigerant lines;
- vibration reduction;
- future maintenance ease.
This kind of consideration is an integral part of a professional HVAC installation.
A visible and rigorous commissioning phase
The photo taken on site shows a particularly technical moment: the system check before full commissioning. You can see the connections to the service valves, the yellow hose used in testing and vacuum procedures, as well as a measuring instrument attached to the system.
This step is crucial. A DoubleZone heat pump should never be started without proper checks. The refrigerant lines must be tested, the vacuum must be properly done, the connections must be verified, and each circuit must be linked to the correct indoor unit.
In a 2 zones – 2 heads system, a connection error can cause communication problems, malfunction of an indoor unit, or unstable performance. That’s why our technicians proceed methodically, circuit by circuit.
Commissioning includes in particular:
- checking refrigerant connections;
- leak testing;
- vacuuming the lines;
- checking electrical and communication connections;
- correct association of zones;
- starting the indoor units;
- control of heating and cooling operation;
- validation of operating pressures and temperatures.
These steps are not visible once the job is finished, but they determine the real quality of the installation.
Why multizone requires more expertise than a single-zone installation
A single-zone installation connects one outdoor unit to a single indoor unit. In a DoubleZone installation, the outdoor unit must manage two circuits and respond to two different comfort demands. Each indoor head can operate according to its own needs, which requires good system coordination.
The GREE FREE MATCH R32 model is designed for this flexibility, but the installation must follow the manufacturer's rules. Line lengths, diameters, elevation changes, connections, and startup parameters must be correctly done.
In Laval-Ouest, the outdoor configuration required careful organization of the lines. In the photo, you can see the insulated ducts heading towards the structure and the planned passages. The goal is to protect the lines, avoid unnecessary tension, maintain proper curves, and prepare a clean finish.
A poorly planned multizone installation can lead to:
- performance losses;
- noise or vibrations;
- drainage problems;
- communication errors;
- maintenance difficulties;
- a reduced lifespan of components.
This is why we place so much importance on preparation and commissioning.
An ideal solution to control two zones of the house
The main advantage of a DoubleZone heat pump is the ability to treat two spaces differently. In a house, needs often vary from one room to another. A bedroom, a living room, a basement, or an office do not always require the same temperature or airflow.
With a 2-head solution, the owner can better adapt comfort to their daily life. This flexibility is very useful in a family residence, a home with an extension, a split-level house, or a property where some rooms are used more intensively than others.
In Laval-Ouest, this approach allows the client to enjoy a more balanced system without having to install two outdoor units. This is an important advantage, especially when outdoor space is limited or when one wants to preserve the appearance of the yard.
Reduce outdoor clutter without sacrificing comfort
In many residential projects, outdoor space quickly becomes an issue. Between the terrace, the fence, service accesses, trees, outdoor furniture, and neighborhood constraints, it is not always desirable to add multiple devices.
The GREE FREE MATCH R32 precisely helps limit clutter. A single outdoor unit serves two zones. This configuration facilitates system integration into the yard, especially when well planned.
In this installation, the outdoor unit is placed near the fence but on an organized and accessible base. The connections are grouped on the right side to allow commissioning and maintenance. This arrangement provides a practical result without multiplying visible equipment.
The importance of HVAC maintenance after installation
Once the heat pump is installed, maintenance remains essential. A well-maintained multi-zone system retains its efficiency better, operates more quietly, and reduces the risk of long-term problems.
For an outdoor installation on a terrace, certain points deserve special attention:
- keep the outdoor unit clear of leaves, branches, and debris;
- avoid snow accumulation around the device;
- periodically check that the base remains stable;
- clean the indoor unit filters;
- have the drainage inspected;
- schedule professional maintenance as needed.
In Laval-Ouest, where backyards can be bordered by trees, hedges, or fences, plant debris can accumulate more easily around the unit. Regular maintenance helps preserve the system's performance.
Subsidies and eligibility: a factor to verify before purchase
Several owners who contact us for a heat pump in Laval, Montreal, Longueuil, on the North Shore or the South Shore want to know if their installation may be eligible for a subsidy. Current programs can have a significant impact on the net cost of the project.
Eligibility depends on the exact model installed, the combination of units, capacity, certifications, and program criteria at the time of purchase. In the case of a multizone system like the GREE FREE MATCH R32, it is important to check the complete configuration, not just the brand.
At AirGreen, we support our clients in this verification by providing the necessary information about the installed system. We ensure the client understands the steps to follow when the equipment meets the applicable criteria.
Mistakes to avoid in a project like this
An installation on a terrace may seem simple, but several mistakes can compromise the quality of the result. The first is installing the unit directly on boards without a proper structure. This can cause vibrations, lack of stability, or premature wear.
The second mistake is neglecting clearances. An outdoor unit needs air. Placing it too close to a fence or obstacle can harm its performance, especially during periods of intense heat or heavy heating.
The third mistake is poorly organizing the refrigerant lines. Exposed, poorly insulated, too tightly bent, or poorly protected lines can cause technical and aesthetic problems.
The fourth mistake is underestimating the commissioning. A system may look well installed visually, but if the void, sealing, or connections are not properly checked, the client may face problems later.
Finally, capacity should not be chosen based only on a quick estimate. A good selection takes into account the area, insulation, sun exposure, number of zones, ceiling height, and actual use of the rooms.
The AirGreen approach: adapting each installation to the building
Each AirGreen project starts with a concrete site analysis. We do not offer the same solution for every home. A residence in Laval-Ouest with a wooden terrace and close fencing does not require the same approach as a condo in Montreal, a house in Longueuil, a property on the North Shore, or an installation on a brick wall on the South Shore.
In this project, our team had to consider the outdoor space, the existing structure, line routing, and the multi-zone configuration. The photo shows an installation nearing completion, with the necessary tools still present on the unit and around the terrace. This kind of job requires organization, as the technical steps must be done in the correct order.
The ultimate goal is always the same: to deliver a clean, reliable, safe, and client-adapted HVAC installation.
An installation that meets the client’s real needs
The Laval-Ouest client was looking for a solution capable of managing two comfort zones without unnecessarily cluttering the outside. The GREE FREE MATCH R32 DoubleZone heat pump met this demand by combining indoor flexibility with a centralized outdoor installation.
Thanks to this configuration, the two served spaces can benefit from better temperature control, both for heating and cooling. The client also gets a solution that is more discreet than a set of two independent systems.
For homes where the outdoor space must remain functional, this approach is often the best. It improves comfort while respecting the yard’s layout.
A project representative of AirGreen’s expertise in Laval
This installation of a GREE FREE MATCH R32 DoubleZone heat pump in Laval-Ouest demonstrates the importance of precise work on multi-zone systems. The stability of the outdoor unit, the quality of the connections, line protection, commissioning, and accessibility for maintenance are all essential elements.
At AirGreen, we know that homeowners are not just looking for a machine. They want a complete solution, well installed, efficient, and durable. That’s why we pay as much attention to visible details as to the invisible technical steps.
Whether in Laval, Montréal, Longueuil, on the North Shore or the South Shore, our team supports clients in choosing, installing, and maintaining their HVAC system. This project in Laval-Ouest is an excellent example: a thoughtful multi-zone installation, adapted to the building and designed to provide reliable comfort in two distinct zones.