Installation of a GREE All Match Slim Duct R32 ducted heat pump with ductwork in Chomedey, Laval

A ducted installation in Chomedey where the fabrication of the ducts was part of the real technical challenge

In Chomedey, in the very residential and dense sector of Laval, our AirGreen team completed a HVAC installation that perfectly demonstrates the difference between a simple equipment setup and a true custom mechanical integration. The project involved installing a GREE All Match Slim Duct R32 ducted heat pump, also called the Slim Duct system, ductable or with ducted conduits. The client’s goal was clear: to achieve uniform comfort throughout the house without multiplying visible wall units in the rooms.

The photo taken during the work illustrates a rarely highlighted but essential step in a ducted installation: the fabrication and assembly of metal duct pieces. It shows several circular fittings, rectangular transitions, cutting and screwing tools, as well as a plenum section being assembled. This part of the work is crucial because the performance of a ducted system depends as much on the quality of the air network as on the machine itself.

In a house in Chomedey, where technical spaces can be limited, ceilings are sometimes already finished, and available passages are never perfectly standardized, every piece of metal must be carefully planned. Our team had to create a network capable of distributing air evenly while respecting structural, access, noise, and future maintenance constraints.

Why a GREE ducted system was suitable for this house in Laval

The client wanted a discreet, efficient, and durable solution. A wall-mounted air conditioner or a classic wall-mounted heat pump would have been easier to install but would not have met the aesthetic and functional expectations of the project. In this residence, some rooms had to be treated without any visible wall unit, with a softer and more integrated air diffusion.

The GREE All Match Slim Duct R32 range meets this type of need well. It allows installing a slim indoor unit, hidden in a technical space, ceiling, false ceiling, or finished area, then distributing air through ducts to targeted rooms. For homeowners in Chomedey, Laval, Montreal, Longueuil, the North Shore, and the South Shore, it is a particularly interesting solution when you want to combine comfort and discretion.

At AirGreen, we offer several GREE ducted configurations according to the building's needs, including models of 9,000 BTU, 12,000 BTU, 18,000 BTU, 21,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU, depending on the series, static pressure type, and indoor/outdoor combination chosen. In a project like this, the choice is never made solely based on area. It also depends on insulation, windows, heat loss, number of air outlets, duct length, and network resistance.

The central role of the plenum and metal transitions

The part visible in the photo corresponds to an air distribution assembly designed to connect the ducted unit to the ducts that will supply different areas of the house. This type of assembly must be sturdy, airtight, and properly sized. A poorly designed plenum can create several problems: airflow loss, air noise, vibration, reduced efficiency, or discomfort in certain rooms.

During this installation in Chomedey, our team worked on several important aspects:

• precise cutting of openings;
• adjusting circular collars;
• screwing and reinforcing joints;
• reducing air leaks;
• alignment of outlets with the planned routes;
• preparation of connections before the final installation;
• compatibility between the available static pressure and the duct network.

These elements are invisible once the work is finished, but they determine comfort quality for years. A well-installed ducted system must blow air evenly, without excessive noise and without unnecessarily straining the equipment.

Low static pressure or high static pressure: a decision not to improvise

The range of GREE ducted ducts includes solutions with low static pressure and high static pressure. This distinction is fundamental in an installation like the one in Chomedey.

A low static pressure unit is generally suitable for shorter networks, with little resistance and direct paths. It can be very efficient when the indoor unit is close to the supply vents.

A high static pressure unit is preferable when ducts are longer, when multiple rooms need to be supplied, or when the network has more bends, transitions, and pressure losses. In an existing home in Laval, this analysis is essential because you often have to deal with load-bearing walls, finished ceilings, mechanical obstacles, and routes that are not perfectly straight.

Our role is to choose a configuration that allows the GREE system to operate under optimal conditions, without creating excessive pressure or insufficient flow. A poor reading of static pressure can turn a promising project into a noisy or uncomfortable installation. This is precisely why AirGreen places so much importance on sizing and network fabrication.

R32, efficiency and performance suited to the Quebec climate

The GREE All Match Slim Duct R32 series uses the refrigerant R32, a technology valued for its efficiency and its more environmentally friendly profile compared to many older refrigerants. For customers investing in a heat pump in Chomedey, this technical choice matters because the equipment must meet heating and cooling needs over several seasons.

Depending on the selected models, some GREE configurations are designed to offer reliable performance down to -30 °C. This feature is important in Laval, where winters require a solution capable of maintaining a good level of comfort even when the outdoor temperature drops significantly. Eligibility for certain subsidy programs, such as those related to efficient heat pumps, must however be validated according to the exact model, performance data, applicable certification, and criteria in effect at the time of installation.

At AirGreen, we help clients understand these details before making a decision. We explain the differences between models, capacities, types of static pressure, available warranties, and installation requirements.

A custom installation, not a generic solution

In Chomedey, houses often have varied configurations: single-family homes, duplexes, renovated houses, extensions, finished basements, and limited technical spaces. In this context, a ductable system must be adapted to the building, not the other way around.

For this project, our team prepared the metal parts according to the actual constraints of the site. The fittings visible in the photo were assembled to match the planned duct path. Each outlet had to correspond to a diffusion zone, with a clear logic: provide enough air for comfort, without excess noise or unnecessary loss.

This work requires field experience. Having the right tools is not enough. You need to understand how air behaves in a network, how a transition affects pressure, how a collar should be positioned, and how to avoid weak points that can cause leaks or vibrations.

Mistakes to avoid with a ducted heat pump

A ducted HVAC installation can deliver excellent results, but only if certain mistakes are avoided from the start.

Underestimating the duct network

The ductwork is as important as the indoor unit. Poorly sized ducts can reduce system efficiency and create temperature differences between rooms.

Choosing a capacity without serious calculation

A unit that is too small will run too often at its limit. A unit that is too large can create short cycles, less stable comfort, and less effective humidity control.

Neglecting air returns

Good blowing is not enough. The air return must be properly planned to ensure balanced circulation in the house.

Forgetting access for maintenance

A hidden unit must remain accessible. At AirGreen, we always think about HVAC maintenance, filter cleaning, inspections, and future interventions.

Installing air outlets based only on available space

The location of the grilles must consider actual comfort in the room, not just ease of installation.

The importance of airtightness in a ducted system

In a ducted installation, every air leak represents a loss of performance. A small unsealed opening may seem insignificant during manufacturing, but it can reduce the available airflow, increase the machine's running time, and harm comfort in certain rooms.

During this project in Chomedey, the metal joints were carefully prepared to limit losses. Screws, edges, fittings, and transitions were checked before final integration. This attention to detail allows the GREE system to deliver air where it needs to go, with less waste and more stability.

A more discreet comfort than a traditional wall solution

The main advantage of a Slim Duct system is its integration. Once the work is completed, occupants usually only see the supply and return grilles. The indoor unit remains hidden, which is perfect for homeowners who want to preserve the appearance of their rooms.

In this residence in Chomedey, discretion was an important criterion. The client wanted to enjoy good comfort in heating and air conditioning, but without a bulky wall unit in the living areas. The ducted system meets this expectation by distributing air more gently, with minimal visual presence.

Why AirGreen is well positioned for GREE ducted projects in Laval

Ducted projects require expertise different from wall-mounted installations. You need to understand the machines, but also the ducts, pressures, flows, building constraints, and maintenance requirements. As a GREE Elite dealer, AirGreen regularly works with GREE ducted systems, including low and high static pressure models as well as the All Match Slim Duct R32 series.

Our experience in Montréal, Laval, Longueuil, on the North Shore and the South Shore allows us to adapt each installation to the realities of the building. We prepare clear offers, explain options, validate constraints, and work with experienced refrigeration technicians. For clients, this method provides a better understanding of the project and reduces unpleasant surprises.

AirGreen also has liability insurance of 5 000 000 $, a reassuring element for homeowners, condominiums, and building managers. In integrated projects, where work can affect ceilings, walls, technical spaces, and mechanical passages, this professional seriousness truly matters.

A project that highlights the expertise behind the walls and ceilings

This installation of a GREE All Match Slim Duct R32 ducted heat pump in Chomedey shows that the quality of an HVAC system often lies in the details that are no longer visible after the work. The ducts, transitions, collars, joints, supports, and service accesses form the foundation of final comfort.

The client gets a discreet, well-integrated solution adapted to their building. The GREE equipment provides the technology, but it is the network design and installation precision that allow for the best performance.

For homeowners in Chomedey and Laval considering a ducted solution, this project highlights one essential thing: the right choice is not limited to a brand or a BTU number. It requires a complete analysis, rigorous design, and clean execution. This is exactly the approach we apply at AirGreen for every heating, ventilation, and air conditioning project.