Installation of a GREE All Match Slim Duct R32 ducted heat pump in Saint-Constant on the South Shore: ducted conduits, Slim Duct, and integrated discreet comfort

A GREE ducted installation in Saint-Constant designed around duct precision

In Saint-Constant, on the South Shore, AirGreen completed an installation that highlights the full benefits of a GREE ducted system, also called ducted ducts, Slim Duct, or ductable. Unlike a visible wall unit, this type of HVAC solution is designed to be discreet: the indoor unit is integrated into a technical space, while air is distributed through insulated ducts and diffusers installed in targeted rooms.

In this project, the construction site image shows an aspect rarely visible to the end customer but essential for performance: the connection of the duct network, sealing of metal joints, use of aluminum tape, insulated flexible duct, and the passage of the condensate drain. It is precisely in these details that the quality of a ducted HVAC installation is determined. A high-performance machine can only deliver its full capacity if the air network is well designed, well sealed, and well balanced.

The client wanted a solution capable of efficiently heating and cooling an area of the house without altering the appearance of the walls or imposing a visible indoor unit in the living space. The GREE solution stood out as a coherent choice, both for its discreet integration and the flexibility of available capacities: 9,000, 12,000, 18,000, 21,000, 24,000, 30,000, and 36,000 BTU, depending on the models and building configuration.

The main challenge: achieving reliable airflow in a confined space

Ducted installations are often more technical than they seem. The customer mainly sees the final result: discreet grilles or diffusers, stable temperature, low noise, and comfortable conditions. Our team, however, must manage the invisible constraints:

• available space around the indoor unit;
• duct routing;
• available static pressure;
• pressure losses in elbows and transitions;
• duct insulation;
• condensate drainage;
• future access for HVAC maintenance;
• the noise level transmitted in the structure.

In Saint-Constant, the visible connection on the site clearly illustrates this reality. The metal transition must be firmly fixed, then carefully sealed. Insulated flexible ducts must be connected without crushing, without too tight a bend, and without air leaks. A poorly positioned duct can reduce actual airflow, increase noise, or create a less well-treated zone in the house.

That is why AirGreen places as much importance on the distribution network as on the heat pump itself. In a ducted installation, the system is never simply “plugged in.” It is designed, adjusted, and validated.

Why GREE is well suited for residential ducted projects

The GREE FM Ducted and GREE All Match Slim Duct R32 systems offered by AirGreen cover several residential and semi-commercial needs. Depending on the project, we can guide the client towards a low static pressure or high static pressure configuration.

Low static pressure

Low static pressure is generally suitable for short networks, when the indoor unit supplies a specific area with little duct distance. It is an interesting option for false ceilings, corridors, bedrooms, or spaces where simple and discreet distribution is desired.

High static pressure

High static pressure becomes relevant when the network is longer, when multiple air outlets are needed, or when the installation requires more flexibility in duct routing. In these cases, sizing must be even more rigorous, as every foot of duct, every elbow, and every transition affects the final airflow.

For this installation in Saint-Constant, the priority was to achieve stable and clean air distribution, with reliable mechanical integration. The goal was not only to make the house more comfortable but to do so with a solution that remains simple, durable, and easy to maintain.

The importance of sealing ducts

In the construction site photo, you can clearly see the work around the plenum and the connections: aluminum tape, metal joints, insulated flexible duct, cutting and adjustment tools. These elements are common in the trade, but their implementation requires method.

An air leak in a ducted system can have several consequences:

• loss of efficiency;
• reduced flow at diffusers;
• more noticeable air noise;
• possible condensation around certain areas;
• overconsumption;
• discomfort in distant rooms.

At AirGreen, we treat every joint as a critical point. The fittings must be mechanically strong and then properly sealed. The tape used must be suitable for the ducts and applied on a clean surface. Flexible ducts must be connected with good tension, without unnecessary twisting or crushed sections.

These details are not always visible once the installation is complete, but they directly determine the quality of comfort.

The role of the condensate drain in a Slim Duct installation

A ducted system used for air conditioning produces condensation. This water must be reliably drained. In many projects, the drain is one of the most sensitive elements, especially when the indoor unit is installed in a ceiling, attic, or hard-to-reach space.

In this project, the presence of a PVC drain pipe highlights the importance of this part of the installation. A drain must have an adequate slope when it operates by gravity. If the configuration does not allow natural drainage, a pump may be necessary. In all cases, the system must be designed to prevent backflow, vibrations, odors, and the risk of leaks in the ceiling.

For our clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore, we often emphasize this point: a quality ducted installation is not limited to the indoor and outdoor units. Drainage, ducts, and service access are just as important.

A discreet HVAC solution, but technically demanding

A customer experience focused on real comfort

The client from Saint-Constant was looking for a simple everyday result: a comfortable temperature, balanced air distribution, a discreet device, and a clean installation. Our role was to turn this expectation into a coherent technical solution.

Before the work, our team validated the installation possibilities, the unit’s location, the duct path, and the feasibility of drainage. This step helps avoid improvised compromises on the day of the job. In ducted systems, poor planning can quickly lead to ducts that are too long, access points that are too tight, or poorly positioned air outlets.

During installation, our technicians paid special attention to the assembly of the distribution network. The metal plenum, fittings, insulated flexible ducts, and sealing points were adjusted to achieve efficient air circulation. The client thus benefits from a discreet solution in the rooms but robust in its design.

The concrete benefits of a GREE ducted system

A GREE ducted heat pump offers several advantages for homeowners who want a more integrated solution than a classic wall system:

• a much more discreet interior appearance;
• a gentle and better-distributed air diffusion;
• the ability to supply multiple outlets depending on the configuration;
• stable comfort in heating and cooling;
• better integration in high-end renovations;
• an interesting option for homes with limited available wall space;
• a reduction in visual impact in main rooms.

The GREE models offered by AirGreen include R-410A and R32 configurations, depending on the series. The All Match Slim Duct R32 series is particularly interesting for recent projects, as the R32 refrigerant meets current trends in efficiency and environmental impact reduction compared to some older refrigerants.

Depending on the selected models, some GREE units can offer heating performance suitable for Quebec winters, with low-temperature operating capacities reaching about -30 °C in certain configurations. This makes these systems relevant for homeowners who want to improve their winter comfort while enjoying a reversible unit for summer.

BTU Capacity: Why Proper Sizing Matters as Much as the Brand

GREE ducted systems are available in several capacities, including 9,000, 12,000, 18,000, 21,000, 24,000, 30,000, and 36,000 BTU. This variety allows meeting very different needs, from a bedroom or enclosed space to a larger living area.

The right capacity choice depends on several factors:

• actual area to be treated;
• insulation level;
• number and size of windows;
• sun exposure;
• ceiling height;
• room compartmentalization;
• heating objective;
• desired level of dehumidification;
• length and complexity of the ducts.

An undersized unit will run too long and will not maintain comfort during heat or cold peaks. An oversized unit can create short cycles, reduce dehumidification, and make comfort less stable. In a Slim Duct installation, sizing must also consider static pressure and the air network.

That is why AirGreen does not recommend capacity based solely on a surface area figure. We analyze the building, then adapt the solution.

Air balancing: an essential step after installation

Once the unit is installed and the ducts connected, our work continues with commissioning. This step includes checking operation in cooling mode, heating mode, drainage, connections, communication between units, and air distribution.

In a ducted system, balancing is crucial. It is necessary to ensure that air reaches the intended outlets properly, without excessive noise and without under-supplied areas. Good balancing helps avoid drafts, temperature differences, and frequent complaints related to poorly adjusted installations.

In this project in Saint-Constant, the goal was to achieve consistent comfort with reliable technical finishing. The expected result is not visually spectacular, and that is precisely the point: the client enjoys comfort without seeing a dominant machine in the room.

Mistakes to avoid with ducted conduits

Ductable systems offer excellent potential, but they do not tolerate approximation. Here are the mistakes we systematically avoid:

Ducts that are too crushed or too long

A poorly installed flexible duct can significantly reduce airflow. Curves should be wide, sections must remain open, and the length must be justified.

Poor sealing of fittings

A non-tight junction causes air loss. In a ceiling or attic, this loss may go unnoticed, but it harms performance and comfort.

Poorly planned drainage

An insufficient or poorly sloped drain can cause damage. We always verify drainage before finalizing the installation.

Lack of access for maintenance

A hidden system must remain accessible. Filters, drains, fittings, and service components must be inspectable.

Choosing an inappropriate static pressure

A low-pressure device is not suitable for all networks. When a project requires more ducts or multiple outlets, a high-pressure configuration may be necessary.

Subsidies and energy efficiency

GREE ducted models may be eligible for certain subsidies depending on the exact configuration, certifications, capacity, and criteria in effect at the time of installation. Programs like Hydro-Québec’s LogisVert require precise information, including model numbers, invoice, performance data, and sometimes the AHRI number.

At AirGreen, we help customers understand the necessary documents. However, we remain rigorous: eligibility must always be confirmed according to the exact model installed and the program conditions at the time of the project.

This transparency is important. A customer investing in a heat pump, a wall air conditioner, a central system, or a ducted system must be able to compare options with clear information, without vague promises.

Why AirGreen is well positioned for GREE ducted projects

AirGreen is a GREE Elite dealer, which allows us to offer specialized expertise on ducted systems, including duct design, static pressure, diagnostics, and after-sales service. Our teams regularly work on projects in Montreal, Laval, Longueuil, on the North Shore, the South Shore, and in Montérégie.

Our approach is based on concrete elements:

• clear estimate before work begins;
• selection of models suited to the home;
• installation by experienced refrigeration technicians;
• compliance with applicable standards;
• clean finishing;
• priority access to original parts subject to availability;
• civil liability insurance from 5 000 000 $;
• structured after-sales service.

In ducted projects, this experience is especially important. A company that mainly installs wall units may underestimate the complexity of a duct network. AirGreen treats this type of project as a complete solution: unit, ducts, drainage, electricity, accessibility, and final comfort.

A lasting result for this residence in Saint-Constant

This GREE installation in Saint-Constant clearly demonstrates the value of a ducted system when it is designed and installed methodically. The client gets a discreet, efficient solution adapted to their space, with integrated air distribution rather than a visible unit in the room.

The part shown in the construction photo is not the most aesthetic of the project, but it is one of the most important. The plenum, insulated ducts, aluminum tape, drainage, and fittings determine the quality of daily comfort. Once the ceiling is closed or the technical space is finished, these elements disappear from view, but their quality continues to be felt with every heating and cooling cycle.

For owners in Saint-Constant, the South Shore, Montreal, Laval, Longueuil, or the North Shore, the GREE All Match Slim Duct R32 system is a serious option when you want to combine performance, discretion, and architectural integration. At AirGreen, we design each HVAC installation so that comfort is visible in the result, even when the machine is almost invisible.