Installation of a GREE All Match Slim Duct R32 Ducted Heat Pump in Montreal: a discreet HVAC system with integrated ducts

A ducted installation designed to keep comfort visible, but the equipment almost invisible

In many properties in Montreal, especially multi-story houses, renovated plexes, large condos, and homes where interior aesthetics matter a lot, a wall-mounted heat pump is not always the ideal solution. Some clients want uniform comfort without a visible unit in each room. It is precisely in this type of project that a GREE ducted system, also called ducted conduit, slim duct, ductable or ducted heat pump, becomes a particularly interesting option.

For this installation carried out in Montreal, our AirGreen team worked on a ducted configuration with air distribution through ducts, including an insulated metal plenum, several circular outlets, and a careful integration into the available space. The photo clearly shows one of the most technical aspects of this type of HVAC installation: the fabrication and adjustment of the air distribution network around the indoor unit.

Unlike a wall-mounted system, where the unit is visible in the room, a ducted system is installed in a dropped ceiling, attic, mechanical room, technical storage, or a hidden space. The air is then distributed through ducts to different zones of the house. The desired result is simple: stable, quiet, and well-distributed comfort with minimal visual presence.

At AirGreen, we install GREE ducted systems in Montreal, Laval, Longueuil, on the North Shore and the South Shore, with special attention to sizing, static pressure, airflow, duct insulation, maintenance access, and finish quality.

Why choose a GREE ducted system in Montreal?

The Montreal market presents very particular constraints. Many buildings were constructed before current insulation standards, several apartments have partially open ceilings during renovations, and owners often want to add air conditioning and heating without changing the appearance of the main rooms.

A GREE All Match Slim Duct R32 system meets these needs well when the building allows for duct integration. The GREE ducted range offered by AirGreen includes different capacities, notably models of 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU, depending on the project configuration, thermal losses, heating and cooling needs, as well as the length and complexity of the duct network.

This type of equipment is particularly useful when the client is looking for:

• a discreet heat pump, without a visible wall unit;
• air distribution to multiple rooms;
• more uniform comfort in partitioned spaces;
• a solution compatible with major renovations;
• integration into a ceiling, attic, or technical area;
• a modern alternative to some bulkier central systems;
• an efficient HVAC system for heating and cooling.

The GREE All Match Slim Duct R32 series is also interesting because it fits into a more recent approach to ducted systems, with a compact format, flexible integration, and a design suited to residential projects where available space is often limited.

The main challenge: properly designing the ducts, not just installing the machine

In a ducted installation, the indoor unit is only part of the work. The real performance depends greatly on the duct network. A high-performance machine poorly connected to ducts that are too long, improperly sized, or poorly balanced can result in disappointing outcomes: excessive noise, insufficient airflow, poorly served rooms, too high static pressure, or discomfort between zones.

On this project in Montreal, one of the essential elements was the configuration of the plenum and the circular outlets visible in the image. Each air outlet must be designed according to the room to be served, the distance to be covered, pressure losses, duct diameter, and acceptable noise level.

We have paid special attention to several points:

The distribution plenum

The metal plenum serves to distribute the air coming out of the indoor unit to the different ducts. Its design directly influences the uniformity of the airflow. A poorly constructed plenum can create turbulence, uneven pressure zones, and performance losses. Here, the plenum has been prepared to accommodate several circular outlets, allowing air to be directed to different areas of the home.

Circular outlets

The round openings visible on top of the plenum are not just accessories. They correspond to the connections for flexible or rigid ducts that will carry air to the diffusion grilles. Their positioning, diameter, and alignment have a direct impact on the final comfort.

Sealing and insulation

In a ducted system, air leaks can reduce efficiency and harm comfort. Joints must be well sealed, transitions must be clean, and exposed surfaces must be treated to limit thermal losses and condensation. This is even more important in installations located in unconditioned areas such as some attics or technical spaces.

Service access

A well-installed system must also be easy to maintain. Access to the filter, drain pan, electrical connections, condensation pump if needed, and main components must be planned from the start. An installation that is too tight, without service access, can cost much more in the long run.

Low static pressure or high static pressure: an important choice

In the GREE ducted system family, there are configurations with low static pressure and high static pressure. This distinction is very important.

A low static pressure system often works better for short networks, with few bends and relatively simple distribution. It can be excellent for a compact area, a well-organized suspended ceiling, or a small diffusion network.

A high static pressure system is more suitable when the ducts are longer, multiple rooms need to be served, or the network includes more transitions, bends, grilles, and pressure losses. In this case, the fan must be able to maintain an adequate airflow despite the network resistance.

At AirGreen, we do not choose a model solely based on the number of BTUs. We also analyze:

• room configuration;
• number of air outlets;
• type of ducts;
• distance between the unit and the grilles;
• ceiling or attic constraints;
• available static pressure;
• desired noise level;
• ease of access for HVAC maintenance;
• compatibility with the existing building.

It is this analysis that allows recommending the right GREE system for a project in Montreal, Laval, Longueuil, on the North Shore or the South Shore.

A discreet solution for high-end renovations and partitioned spaces

In many Montreal homes, adding a wall-mounted heat pump can pose an aesthetic or functional problem. Customers do not always want to see a unit in the living room, bedroom, or dining room. In other cases, the wall configuration does not allow good air projection.

The ducted system then becomes a very effective solution. The unit is hidden, and only the diffusion grilles remain visible. These grilles can be chosen based on the interior style, ceiling, wall color, and desired level of finish.

This type of installation is particularly suited to the following situations:

Renovated homes in Montreal

When a ceiling is already open during work, it is often the right time to integrate a ducted HVAC system. The ducts can be installed before closing the ceiling, resulting in a much cleaner finish.

Condos and homes with visual constraints

Some condominium associations or owners impose limits on visible units, penetrations, pipe passages, or the appearance of equipment. A ducted solution can sometimes facilitate interior integration, provided the building's technical constraints are compatible.

Spaces with several small rooms

In partitioned homes, a single wall unit may not distribute air properly. With a well-designed duct network, it is possible to bring air to several zones, which improves overall comfort.

Projects where silence is a priority

When a system is properly sized, well insulated, and well balanced, the perceived noise level in the rooms can be very discreet. The quality of the ducts, grilles, and connections plays a decisive role here.

The AirGreen method: sizing, clean installation, and lasting results

A ducted installation requires more planning than a standard wall-mounted installation. Our team must coordinate several elements: the location of the indoor unit, the duct routing, the condensation drain, the refrigerant line passage, the electrical supply, the location of the outdoor unit, the necessary clearances, and the finishing.

Step 1: Validation of the actual need

Before recommending a GREE All Match Slim Duct R32 system, we validate the customer's needs. A capacity of 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, or 36,000 BTU is not chosen at random. A machine that is too small will run too long without reaching the desired comfort. A machine that is too large may cycle too quickly, poorly dehumidify, and create temperature variations.

We take into account the area, insulation, orientation, windows, number of occupants, heating habits, level of sunlight, and interior layout.

Step 2: Choice of ducted system type

Depending on the project, we may recommend a low static pressure version, high static pressure, or a more specific configuration. The choice depends on the duct network to be created. A house with two or three closely spaced outlets does not have the same needs as a whole floor with several rooms.

Step 3: Duct network design

This is the step that often makes the difference between an acceptable installation and a truly successful one. The ducts must be considered as a complete system. Every bend, every reduction, every length of duct, and every grille changes the air resistance.

For this project, the plenum with multiple outlets was prepared to allow organized distribution. The metalwork, fittings, insulation, and sealing are essential to maintain stable performance.

Step 4: Installation of the indoor unit

The ducted indoor unit must be installed level, securely fixed, and accessible. The condensation drain must be well designed, with an adequate slope or a pump if necessary. Poor condensation management can cause water damage, especially in a closed ceiling.

Step 5: Refrigerant connection and outdoor unit

As with any heat pump, refrigerant lines must be installed by qualified professionals. Routing the lines, respecting maximum lengths, insulation, connections, and commissioning are critical steps. At AirGreen, our installations are carried out according to the standards applicable in Quebec, with experienced refrigeration technicians.

Step 6: balancing and verification

Once the system is installed, you need to check the airflow, operation, drainage, noise, supply air temperature, and thermostat response. In a ducted system, balancing may require adjustments so that each outlet receives consistent airflow.

Common mistakes to avoid with a ducted system

A GREE ducted system can offer excellent comfort, but only if the installation is well designed. Here are the mistakes we see too often in poorly planned projects:

Choosing based only on BTU

Capacity is important, but it is not enough. You also need to check static pressure, airflow, and the duct network. Two systems with the same capacity can deliver very different results depending on their installation.

Neglecting air return

The blown air must be able to return to the unit. Without proper air return, the system can become noisy, lose performance, and create imbalances between rooms.

Installing ducts that are too small

Undersized ducts increase air velocity, noise, and static pressure. This can harm performance and comfort.

Forgetting filter access

An inaccessible filter often ends up being neglected. Maintenance becomes difficult, which can reduce the equipment's lifespan.

Close the ceiling after testing

In a renovation project, it is best to test the essential elements before fully closing surfaces. This makes it easier to correct a drainage, noise, or access issue.

Rebates and eligibility: a point to verify before purchase

Certain GREE systems may be eligible for rebate programs depending on their certifications, indoor/outdoor pairing, AHRI number, energy efficiency, and the criteria in effect at the time of installation. For customers in Montreal, Laval, Longueuil, the North Shore, and the South Shore, we always recommend verifying the eligibility of the exact model before finalizing the project.

Eligibility does not depend only on the brand. It depends on the complete system, the installed combination, capacity, certification, and the requirements of the applicable program. AirGreen supports its clients in this verification to avoid unpleasant surprises.

Why choose AirGreen for a GREE ducted installation?

AirGreen is a GREE Elite dealer, which gives us specialized expertise on the brand's systems, including ducted configurations, low and high static pressure series, as well as the All Match Slim Duct R32 range. This experience is particularly important for integrated systems, as installation is not limited to mounting a unit on the wall.

Our advantages in this type of project:

• expertise in residential and multi-unit HVAC installation;
• knowledge of the constraints of Montreal buildings;
• design of adapted duct networks;
• clean installations coordinated with renovations;
• clear advice on GREE ducted models;
• service in Montreal, Laval, Longueuil, North Shore and South Shore;
• $5,000,000 liability insurance;
• structured after-sales service;
• access to original parts and GREE technical support;
• transparent estimates before the work.

A final result that transforms comfort without changing the appearance of the rooms

The main advantage of a GREE ducted heat pump is its discretion. The customer benefits from an efficient heating and air conditioning system, but without a visible wall unit in the main rooms. In a project like this in Montreal, the most important work is often hidden behind the ceiling, in a technical space or behind the finishes. Yet, it is precisely this invisible work that determines daily comfort.

A well-executed ducted installation offers a different sensation: the air is distributed more evenly, rooms are less dependent on a single supply point, and the architectural integration is much more discreet. For clients investing in a renovation or seeking a more refined solution than a traditional wall unit, it is an option worth serious consideration.

Practical advice before choosing a ducted system

Before choosing a GREE All Match Slim Duct R32 system or any other ducted model, we recommend checking the following points:

1. Is the available space for the indoor unit sufficient?
2. Can the ducts be installed without compromising the structure?
3. Is the air return properly planned?
4. Is the condensation drainage reliable?
5. Is the expected noise level compatible with the rooms served?
6. Does the chosen system meet the actual BTU needs?
7. Is the available static pressure suitable for the network?
8. Will future maintenance be easy?
9. Can the outdoor unit be installed in a compliant and accessible location?
10. Is the model eligible for a subsidy based on its exact combination?

These questions help avoid hasty decisions. A ducted installation is a serious investment, and its success depends as much on the quality of the design as on the quality of the equipment.

AirGreen, your specialist in GREE ducted systems in Montreal

For this installation in Montreal, our team focused on what makes a difference in a ducted system: planning, duct network precision, airtightness, accessibility, and finishing quality. Choosing a GREE ducted system allows for effective comfort while respecting the building's interior aesthetics.

Whether the project involves a renovated house, a condo, a Montreal multiplex, a full floor, or a property with architectural constraints, AirGreen can recommend a suitable solution. We operate in Montreal, Laval, Longueuil, on the North Shore and the South Shore, with a professional, transparent, and sustainability-focused approach.

A ducted heat pump is not just a machine. It is a complete system that must be carefully designed, installed, and adjusted. It is this rigor that ensures stable, discreet, and reliable comfort, season after season.