Installation of a GREE VITA R32 Wall-Mounted Heat Pump – Mini Split Air Conditioner in Lorraine, on the North Shore of Montreal

A well-protected outdoor unit on a terrace: an essential detail for the durability of an HVAC installation

In Lorraine, on the North Shore, AirGreen carried out the installation of a wall-mounted heat pump GREE VITA R32, also used as a mini split air conditioner, in an outdoor setting that required very precise planning. The project photo shows the outdoor unit installed on an elevated metal support, directly on a wooden terrace, near a brown exterior wall, with an accessible Siemens electrical cutoff device nearby and a carefully sealed wall passage for the refrigerant lines.

This type of installation may seem simple at first glance, but it involves several important challenges: snow, defrost water, vibrations on a wooden structure, clearance around the fan, service access, protection of connections, and visual integration into an outdoor space already used daily. In a city like Lorraine, where single-family homes often have terraces, landscaped yards, and well-structured outdoor spaces, a successful HVAC installation must respect both mechanical performance and the actual use of the property.

The client wanted to improve indoor comfort with an effective, discreet solution well suited to an existing residence. The GREE VITA R32 met this need thanks to its ductless wall-mounted format, inverter technology, reversible operation for cooling and heating, and practical integration into a home where adding a duct network would have been less advantageous.

An outdoor location chosen for stability, access, and winter protection

One of the most important aspects of this project is the installation of the outdoor unit on an elevated support. In the photo, the device rests on a metal structure installed above the terrace boards. This choice is not only aesthetic. It helps better protect the heat pump against snow accumulation, splashes, stagnant moisture, and ice that can form during defrost cycles.

In heating mode, a heat pump can produce defrost water outside. If the unit is installed too low, this water can freeze around the base, block air circulation, or complicate maintenance. On a wooden terrace, direct contact between the device and the surface must also be avoided, vibrations reduced, and better ventilation allowed under the unit. The metal support used here creates a clear separation between the machine and the floor while providing a stable base.

Our team also took into account the surrounding elements: the lattice fence, the posts, the adjacent door, the outdoor storage space, and the circulation around the terrace. A snow shovel is visible nearby, a very concrete reminder of Quebec reality. When installing in Lorraine, we always think about winter from the start, even if the project is carried out in a milder season.

Why the GREE VITA R32 was suitable for this residence in Lorraine

The GREE VITA R32 is an interesting solution for homeowners who want a compact, efficient wall-mounted heat pump suited to residential needs. The GREE Canada VITA R32 range is available in capacities of 9,000, 12,000, 18,000, and 24,000 BTU, with 115 V or 230 V power supply depending on the chosen configuration. It notably includes G20 Inverter technology, Wi-Fi connectivity, a refrigerant leak detection sensor, a composite drainage tray, and the R32 refrigerant. For a 9,000 BTU variant, GREE Canada indicates, for example, a cooling capacity of 9,100 BTU/h, a heating capacity of 10,000 BTU/h, a SEER2 efficiency of 20.5, an HSPF2 of 8.8, an EER2 of 12.5, and a COP2 of 3.80. Exact performance varies depending on the selected capacity and indoor-outdoor pairing.

On this site, the sizing was validated according to the interior area to be treated: surface area, ceiling height, insulation, sun exposure, number of occupants, air circulation, and client expectations. At AirGreen, we do not choose a BTU capacity solely based on a quick surface area rule. A very glazed room, an open area, or a warmer floor may require a different analysis than a closed room of the same size.

A useful technical sheet to understand the project

Here are the key elements of this installation in Lorraine:

• Installed brand: GREE
• Model: VITA R32
• Equipment type: wall-mounted heat pump, wall air conditioner, ductless mini split
• Refrigerant: R32, visible on the outdoor unit label
• Technology: variable speed inverter
• Outdoor installation: unit on elevated metal support
• Location: wooden deck, near an exterior wall with through connections
• Electricity: accessible outdoor cutoff device nearby
• Service area: Lorraine, North Shore of Montréal
• AirGreen Service: complete HVAC installation, connection, inspection, commissioning, and usage advice

The AHRI label visible on the device also confirms that the system is part of a category of equipment that can be verified according to a certified combination. This step is important when the customer wants to validate performance, compare devices, or prepare a financial aid application.

A wall passage that had to remain watertight and clean

The image clearly shows the passage of the lines between the outdoor unit and the inside of the house. This point is often underestimated in a wall-mounted heat pump installation, but it plays an essential role. The drilling must be protected against water, cold, outside air, insects, and movements related to temperature variations. Poor sealing can cause infiltration, loss of efficiency, condensation, or long-term wall damage.

In this project, the refrigerant lines and communication cable were routed indoors with particular attention to protecting the passage. The sealing around the wall hole was done to limit the risk of infiltration while leaving a clean and accessible technical path. This attention to detail is part of our method on every site, whether in Montréal, Laval, Longueuil, on the North Shore or on the South Shore.

The role of the outdoor electrical cutoff device

The presence of a cutoff box near the outdoor unit is a practical and important element for service. It allows the device to be isolated during intervention, maintenance, or technical inspection. For the customer, this means easier access in case of maintenance. For our technicians, it allows them to work more efficiently and safely.

The location of the box must remain clear. In a yard or on a terrace, objects may be placed around the unit over time: gardening tools, bins, furniture, shovels, covers, decorations, or seasonal equipment. We always remind the client to keep free access to the electrical panel and the outdoor unit, as this facilitates HVAC maintenance and avoids unnecessary delays during a service call.

A well-ventilated outdoor unit despite limited space

Installing an outdoor unit on a terrace requires special attention to clearances. The front fan must be able to expel air without obstruction. The sides and back must also allow sufficient circulation. In this project, the unit was positioned to limit obstacles in front of the fan while maintaining logical integration into the available space.

The proximity of a trellis and an outdoor structure requires a thorough analysis. A unit placed too close to a wall, decorative panel, or storage can lose efficiency, become noisier, or require more effort to reach the desired temperature. We therefore checked the orientation, height, and clearance of the device to ensure stable performance.

Special attention to vibrations on a wooden terrace

Wood reacts to the seasons. It can move slightly with humidity, frost, sun, and normal wear. That is why an outdoor unit installed on a terrace should not be treated the same way as a unit placed on a concrete slab. The support must be well secured, leveled, and installed in a way that limits vibration transmission.

A GREE VITA R32 wall-mounted heat pump uses an inverter compressor, which allows for smoother modulation than a strictly on-off operation. Despite this, any outdoor unit generates a certain level of vibration. The quality of the support, the rigidity of the base, proper alignment of the brackets, and protection of the lines are therefore essential to preserve sound comfort.

An installation designed for the client's daily life

The client did not want to lose the use of their terrace or end up with an outdoor unit installed in the middle of a passage. We therefore chose a location that respects circulation, door access, seasonal storage, and future maintenance. A good installation must not only work; it must also fit into the owner's routine.

After installation, we explained the basic points to monitor:

• keep the front of the unit clear;
• avoid accumulating snow around the support;
• do not place objects against the heat pump;
• visually check that defrost water can drain;
• regularly clean the indoor unit’s filters;
• plan periodic HVAC maintenance to preserve performance.

These simple tips extend the system’s lifespan and help the customer fully enjoy their wall-mounted heat pump.

AirGreen tips for a durable wall-mounted heat pump in Lorraine and on the North Shore

Choose the capacity in BTU wisely

Choosing the capacity is one of the most important decisions. A unit that is too small risks running too long without reaching the desired comfort. A unit that is too large can create less pleasant cycles and reduce the quality of dehumidification. In Lorraine, as in many homes on the North Shore, open rooms, large windows, and sun-exposed floors can alter the actual needs.

Our approach is to look at the house as it is used: orientation, insulation, openings, type of room, occupant habits, and existing heating system. This analysis allows us to recommend a consistent wall-mounted heat pump, rather than a randomly chosen device.

Check available subsidies without relying solely on the logo

Financial aid programs can represent a significant advantage for homeowners. Hydro-Québec’s LogisVert program provides financial assistance for the installation of certain efficient heat pumps, and Hydro-Québec’s tool allows you to assess the applicable amount based on the heat pump’s model number or AHRI number. Eligibility, however, depends on the complete system, the residence, the installation date, certification, and the criteria in effect at the time of the application.

At AirGreen, we assist customers from Montréal, Laval, Longueuil, the North Shore, and the South Shore in verifying the necessary information: model number, AHRI combination, invoice, technical details, and useful documents. We avoid promising a subsidy without validation, as the same serial name can sometimes correspond to multiple capacities or configurations.

Mistakes to avoid during a deck installation

An outdoor installation on a wooden terrace carries risks if improvised. Here are the mistakes we systematically avoid:

Installing the unit too low

A unit placed too close to the ground or terrace floor can be exposed to snow, ice, standing water, and debris. An elevated support is a much better solution for the Quebec climate.

Blocking the fan with storage

Shovels, bins, furniture, and tools can reduce airflow if placed too close to the unit. The front of the device must remain clear.

Neglecting the waterproofing of the wall penetration

A poorly sealed passage can cause leaks and condensation problems. The sealing must be durable and suited to outdoor conditions.

Forgetting defrost water

In heating mode, the outdoor unit can produce water that must be able to drain without causing problematic ice buildup.

Installing without considering maintenance

A hard-to-reach unit will cost more to maintain and be more complicated to inspect. Access to the service panel, connections, and electrical box must be preserved.

A clean, solid result adapted to Quebec seasons

This GREE VITA R32 installation in Lorraine perfectly represents AirGreen’s philosophy: installing high-performance equipment, but above all installing it in the right place, with the right supports, proper clearances, and a durable finish. The elevated metal support protects the unit, the wall passage is organized, the electrical box remains accessible, and the device fits into the outdoor space without making it unusable.

For the client, the benefit is concrete: a well-suited wall air conditioning and supplemental heating solution for their home, with an outdoor unit installed thoughtfully to withstand snow, frost, humidity, and daily terrace use.

AirGreen carries out this type of HVAC installation throughout Greater Montreal, including in Montreal, Laval, Longueuil, on the North Shore and on the South Shore. Each project is different, but the priorities remain the same: indoor comfort, mechanical reliability, safety, clean workmanship, and professional client support.