Installation of a GREE All Match Slim Duct R32 Ducted Heat Pump in Pont-Viau, Laval: a discreet HVAC system with custom ducts

An almost invisible comfort, designed behind ceilings and adapted to the reality of a building in Pont-Viau

In Pont-Viau, in the Laval area, AirGreen recently completed an HVAC installation focused on a GREE ducted solution, also called ducted conduit, Slim Duct, or ductable system. This type of installation is especially sought after by owners who want to enjoy the comfort of a high-performance heat pump without multiplying visible wall units in the rooms.

The project was based on a principle that seems simple but is demanding in the field: integrating a discreet heating and cooling system powered by a duct network manufactured and adjusted with precision. The construction photo clearly illustrates an essential part of this work: the preparation of a custom metal plenum with several round outlets, designed to distribute air to different areas of the residence.

Unlike a classic wall-mounted installation where the indoor unit is visible in the room, a GREE ducted heat pump is usually hidden in a ceiling, false ceiling, attic, technical space, or service area. The air is then distributed through ducts to discreet grilles. For houses, renovated condos, multiplexes, and residential projects in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this approach helps maintain a cleaner interior finish while ensuring uniform comfort.

In this project in Pont-Viau, the challenge was not just to connect a machine. It was necessary to design a coherent air path, limit pressure losses, plan access for future maintenance, and adjust the metal fabrication so that each outlet properly supplies the intended zone.

Why choose a GREE ducted system in an area like Pont-Viau

Pont-Viau has many properties where space constraints, interior finishing, and renovation challenges are very real. Clients often seek an effective solution but do not necessarily want to see a wall unit in every room. This is precisely where the GREE All Match Slim Duct R32 becomes relevant.

A ducted system allows air to be distributed more evenly, with minimal visual presence. Grilles can be strategically placed in ceilings or walls, while the indoor unit remains hidden. For an owner who wants to improve comfort on a whole floor, an open space, or several adjacent rooms, this type of heat pump is a very interesting option.

At AirGreen, we always evaluate several elements before recommending a ducted solution:

• the volume of rooms to be treated;
• the number of required air outlets;
• duct length and diameter;
• available static pressure;
• available space for the indoor unit;
• building insulation;
• access to the unit for HVAC maintenance;
• the expected noise level in occupied rooms;
• the possibility to install grilles without compromising interior aesthetics.

This analysis is essential because a poorly sized duct system can cause comfort problems: some rooms may receive too much air, others not enough, and the machine may work harder than necessary. Conversely, a well-designed installation offers more stable, quieter, and more pleasant daily operation.

Duct fabrication that makes all the difference

The photo of this installation shows an important metal piece: a duct assembly with several round outlets connected to a distribution box. This type of component is not a minor detail. It directly influences the quality of the installation.

In a Slim Duct system, air must exit the indoor unit, pass through a plenum, then be directed to the various ducts. Every angle, reduction, outlet, and connection must be designed to preserve airflow. A poor transition can create turbulence, noise, pressure loss, or imbalance between zones.

On this site in Pont-Viau, our team worked with particular attention on:

Outlet alignment

Round outlets must be positioned logically to facilitate connection to flexible or rigid ducts. Poor alignment complicates installation, increases bends, and can reduce the available airflow to the grilles.

Assembly solidity

A plenum must be sturdy, properly fixed, and well sealed. Vibrations, air leaks, and deformations can harm system performance. Our team ensures that connections are well fitted, surfaces are clean, and joints are carefully treated.

Reducing pressure losses

In a ducted HVAC installation, static pressure is a central element. The indoor unit's fan must be able to push air through the network without being overloaded. The longer, more tortuous, or poorly sized the network, the greater the losses. That is why the choice of duct diameter, plenum shape, and outlet arrangement are crucial.

Future access for maintenance

A common mistake in ducted projects is hiding the indoor unit without providing sufficient access. However, an HVAC system must be maintainable: filters, drain, connections, inspection, cleaning, and diagnostics. At AirGreen, we incorporate this consideration from the start because a beautiful installation must also remain practical after several years of use.

GREE All Match Slim Duct R32: a solution designed for discreet integration

The GREE All Match Slim Duct R32 range is designed for projects where comfort must be integrated discreetly. Depending on the building's needs, AirGreen offers different capacities in this family, including models of 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU, as well as low or high static pressure configurations depending on the network design.

The exact choice of capacity is never random. A 24,000 BTU system is not automatically suitable for all floors, just as a 12,000 BTU system is not always enough for several rooms. The right capacity depends on load calculation, house orientation, insulation, window placement, ceiling height, and air distribution.

For this type of project, the brand GREE offers several concrete advantages:

• good integration flexibility with ducted systems;
• options in R32 on certain models, a new generation refrigerant;
• a range adapted to residential and multi-zone projects;
• models suitable for cold climates, depending on the chosen series;
• discreet air distribution through ducts;
• an approach compatible with renovations where interior aesthetics are important.

The goal is not just to install a high-performance machine. It is about designing a complete system: indoor unit, outdoor unit, ducts, grilles, drainage, electrical supply, control, acoustic insulation, and service access.

An HVAC installation where every technical detail influences the final comfort

The client from Pont-Viau wanted a solution capable of improving indoor comfort without changing the appearance of the rooms. This type of request is increasingly common in Laval, but also in Montreal, Longueuil, on the North Shore and on the South Shore. Homeowners want efficiency, but they also want a clean, discreet installation consistent with their interior design.

Step 1: validation of available space

Before installation, our team checks the space reserved for the Slim Duct indoor unit. Unlike a wall unit, a Slim Duct device must be installed in a technical space where clearances can be respected, ducts connected, the drain installed, and access for maintenance allowed.

In an existing property, this step often requires more coordination than new construction. Joists, partitions, ceilings, existing ducts, electrical wires, and plumbing can limit options. Our role is to find an efficient location without creating unnecessary compromises.

Step 2: distribution network design

The duct network is the heart of the project. For the system to work properly, each air outlet must receive an appropriate airflow. In the case shown in the photo, several ducts come from the same metal box. This configuration allows supplying different rooms or zones from a single indoor unit.

The design takes several factors into account:

• duct length;
• number of elbows;
• diameter of each branch;
• grille position;
• balance between zones;
• air return;
• duct insulation;
• potential noise related to air speed.

A good duct network is not judged only by its appearance. It is judged by temperature stability, sound discretion, airflow quality, and customer satisfaction after several days of use.

Step 3: refrigeration and electrical connection

Like any heat pump, a ducted system requires refrigeration connections between the indoor and outdoor units. These tasks must be performed by qualified professionals, as refrigeration systems require precise methods: brazing or proper connection depending on the system, pressurization, vacuum pulling, leak testing, and compliant startup.

At AirGreen, we emphasize this point: a heat pump installation is not a simple plug-in. The quality of the vacuum, cleanliness of the lines, pipe protection, and respect for allowable distances directly influence the equipment's durability.

The electrical supply must also be checked. Depending on the chosen capacity, the circuit, breaker, wiring, and compliance with applicable standards must be validated before startup.

Step 4: drainage management

A ducted system produces condensation in cooling mode. This water must be properly drained. The drain can sometimes work by gravity, but in some projects, a drainage pump may be required. Insufficient slope, poor connection, or difficult access can cause long-term water problems.

In our installations, we pay special attention to the drain because it is one of the most important elements for the reliability of a concealed system. When the unit is installed in a ceiling or false ceiling, it is better to prevent than to fix after closing the surfaces.

Step 5: balancing and operation verification

Once the installation is complete, the system's operation must be checked. For a ducted unit, this step goes beyond simple startup. We need to observe air distribution, confirm that the outlets respond correctly, check noise, validate drainage, and explain to the client how to use the control.

Balancing can include adjustments on the dampers, grilles, or certain branches of the network. The goal is to achieve even distribution, without a feeling of excessive drafts in one room and without weak zones elsewhere.

Mistakes to avoid in a ducted installation

Ducted systems offer excellent comfort when well designed, but they do not tolerate approximations well. Here are the most common mistakes we help our clients avoid:

Choosing capacity based only on surface area

The surface area gives a first indication, but it is not enough. Two homes of the same size can have very different needs depending on insulation, windows, sun exposure, and interior layout.

Neglecting static pressure

A ducted system must be able to push air through the network. If the ducts are too long, too small, or too numerous for the available pressure, comfort will be compromised.

Installing too few air outlets

A single grille for a large space or several closed rooms can create uneven distribution. You have to think about the actual air path, not just the machine.

Forgetting the air return

The supplied air must be able to return to the unit. Poor air return reduces performance, increases noise, and can harm system stability.

Closing ceilings without service access

A hidden system must remain accessible. Without a hatch or proper access, maintenance becomes difficult, costly, and sometimes intrusive.

AirGreen’s experience with ducted projects in Laval and Greater Montreal

AirGreen regularly installs discreet HVAC solutions in very varied contexts: condos, renovated houses, duplexes, triplexes, commercial spaces, offices, and residences where aesthetics matter as much as performance.

In some projects in Plateau-Mont-Royal, the main challenge is the architectural constraint. In other installations in Laval or on the South Shore, the available space allows for creating a more complete network but requires close coordination with ceilings, soffits, or mechanical areas. On the North Shore, we often encounter houses where the goal is to improve the comfort of an entire floor without installing multiple wall units.

This experience helps us better anticipate the details that make the difference: the noise of a poorly chosen grille, the importance of a well-placed elbow, the need for clean access, or the choice of a model better suited to the required static pressure.

A discreet system, but not simplistic

One of the great advantages of a GREE ducted heat pump is its discretion. But this discretion can give the impression that the system is simpler than it really is. In reality, a ducted installation often requires more planning than a wall unit.

In the Pont-Viau project, the metal piece visible in the photo truly represents this reality. This component will probably not be the element the client looks at daily. Yet, it is the one that will help distribute air efficiently to the right areas. Once the system is closed and the grilles installed, the comfort felt will largely depend on this hidden work.

That is why we place as much importance on the elements that are no longer visible after installation: ducts, plenums, fittings, supports, insulation, drainage, slopes, access, and adjustments.

Subsidies and eligibility: a check to do according to the exact model

Some GREE equipment may be eligible for subsidy programs, depending on the exact model, capacity, certifications, and criteria in effect at the time of installation. At AirGreen, we help clients understand the available options and verify applicable information before finalizing their choice.

For clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this step can influence the net cost of the project. However, it is important never to choose a heat pump solely for a subsidy. The right system is the one that first meets the building’s needs. The subsidy then improves the project’s profitability when applicable.

What the client gets with a well-thought-out installation

Once the system is in operation, the expected result is clear: stable comfort, a more understated interior appearance, better-integrated air distribution, and a solution adapted to the building’s reality. In the case of a ducted system, the client enjoys comfort that is felt more than seen.

The most appreciated benefits are generally:

• more discreet air conditioning;
• better-distributed heating in the served areas;
• fewer units visible on the walls;
• better integration in renovations;
• a more harmonious operation when the network is well designed;
• a valuable solution for properties where interior aesthetics matter.

Practical advice before choosing a ducted system

For homeowners considering an installation similar to Pont-Viau, here are some concrete recommendations:

Plan the installation before finishing work

If ceilings, walls, or soffits are already open, it is often the best time to plan a ducted system. The ducts can be integrated more neatly and access points can be better positioned.

Do not underestimate the required space

Even a Slim Duct system needs space for the unit, ducts, drain, insulation, and maintenance. Successful integration starts with a realistic validation of the available dimensions.

Request a complete solution, not just a machine price

The price of a unit represents only part of the project. Installation quality, duct design, balancing, finishing, and after-sales service matter just as much.

Think long term

A ducted system must be maintained. Filters, drains, and components must remain accessible. An installation that is too tight or poorly planned can become problematic after a few seasons.

Why choose AirGreen for a GREE ducted installation in Pont-Viau

AirGreen supports customers from Laval, Montreal, Longueuil, the North Shore, and the South Shore with a comprehensive approach: clear estimate, choosing the right equipment, network design, professional installation, commissioning, and after-sales service.

Our experience with GREE ducted systems, low and high static pressure ducts, complex residential configurations, and renovations allows us to offer truly adapted solutions. We don’t just aim to install a machine. We aim to deliver a system that works well in the customer’s actual building.

We also pay attention to details that reassure homeowners: transparent pricing, clear explanations, qualified technicians, respect for the premises, $5M liability insurance, and support for subsidy questions when the selected model is eligible.

A project that illustrates the hidden expertise behind comfort

This installation in Pont-Viau perfectly shows what distinguishes a successful ducted project: quality is often behind the walls, above the ceilings, or in mechanical rooms. The customer will mostly see the grilles, feel the pleasant temperature, and hear the system little. But behind this apparent simplicity, there is precise design, careful manufacturing, and methodical HVAC installation.

With a GREE All Match Slim Duct R32 ducted heat pump, comfort depends not only on the brand or BTU capacity. It depends on the whole: the right model, the right location, the right duct network, the right fittings, the right drainage, and the right settings.

This is exactly the approach we prioritize at AirGreen: offering customers in Pont-Viau and Greater Montreal a discreet, efficient, durable HVAC solution tailored to their actual space.