An invisible HVAC installation, designed to distribute comfort without visible wall units
In Sainte-Dorothée, in the west of Laval, our AirGreen team recently completed a particularly interesting HVAC installation: the integration of a GREE ducted system, also called ducted conduit, Slim Duct or ductable, designed to provide efficient heating and cooling while remaining almost invisible in the living space.
The client's need was clear: to achieve the comfort of a modern heat pump, with well-distributed air flow, without multiplying wall units in the main rooms. In this type of project, the challenge is not only to choose a good machine. It is also necessary to design a compact, balanced, quiet duct network adapted to the existing building structure. This is precisely where AirGreen's expertise becomes crucial.
The photo taken during the work shows an essential part of this installation: a metal distribution plenum manufactured and adjusted to supply several air outlets. This component, often invisible once the project is completed, plays a central role in the overall system performance. A GREE ducted heat pump can be very efficient on paper, but if the ducts are poorly sized, if pressure losses are neglected, or if the outlets are poorly balanced, the final result can be disappointing. Our job is therefore to turn a good machine into a complete, reliable, and pleasant system for everyday use.
Why choose a GREE ducted system in Sainte-Dorothée?
Sainte-Dorothée includes several types of residences: single-family homes, high-end renovations, condos, homes with finished ceilings, open spaces, and properties where interior aesthetics matter a lot. In this context, the GREE All Match Slim Duct R32 represents a very relevant solution for clients who want efficient air conditioning and heating without a visible unit in every room.
Unlike a wall-mounted air conditioner or a wall-mounted heat pump, the ducted system is installed in a hidden space: ceiling, false ceiling, attic, mechanical closet, or technical area. The air is then distributed through ducts to discreet grilles. The result is more architectural, more understated, and often better integrated into renovation projects.
At AirGreen, we recommend this type of system when the building allows good duct circulation and when the client seeks a balance between comfort, aesthetics, and performance. In this project in Sainte-Dorothée, the GREE ducted solution met several objectives at once:
- reduce the visual presence of indoor units;
- improve air distribution across multiple zones;
- maintain a discreet noise level;
- adapt the system to the existing structure;
- prepare a durable installation, accessible for maintenance, and well balanced.
The role of the metal plenum in a ducted installation
One of the most important elements of this project was the fabrication and adjustment of the distribution plenum. In the photo, you see a metal piece with several round outlets, each intended to feed a duct to a grille or a specific zone. This type of component requires special attention because it directly influences airflow, static pressure, and noise level.
In a ducted system installation, the air must not just exit the machine. It must be directed precisely. A wrong angle, a too abrupt transition, or a poorly chosen diameter can create turbulence, vibrations, performance loss, or a less well-conditioned room.
Our approach is to validate several points before commissioning:
- compatibility between the capacity of the GREE unit and the duct network;
- the static pressure available depending on the type of machine;
- the number of air outlets needed;
- duct lengths;
- elbows and transitions;
- insulation of ducts in unconditioned areas;
- future access for HVAC maintenance.
This step is often underestimated. Yet, it makes the difference between a simply installed system and a truly well-designed system.
GREE All Match Slim Duct R32: a flexible solution for residential projects
The GREE ducted range offered by AirGreen includes several capacities, notably units of 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU, depending on the building's needs. This flexibility allows meeting very different projects: a suite, a floor, an open area, a condo, a renovated house, or a complete section of a residence.
The All Match Slim Duct R32 series is particularly interesting for installations where space is limited. The slim format facilitates integration in areas where a standard ducted unit would be more difficult to install. The refrigerant R32 also represents an important evolution for new generations of HVAC systems, with better potential efficiency and a more current approach to energy performance.
Depending on the selected capacity and installation configuration, some models can be associated with energy efficiency criteria and eligibility for subsidy programs, especially when the models are certified ENERGY STAR. At AirGreen, we always check the available information at the time of submission to guide the client toward a solution consistent with their budget, building, and applicable programs.
Static low pressure or static high pressure: an important technical choice
In GREE ducted systems, there are options for static low pressure and static high pressure. This detail may seem technical, but it is essential.
A static low-pressure system may be suitable when the ducts are short, simple, and well cleared. It is often used for compact installations, with few outlets and relatively direct distribution.
A static high-pressure system becomes relevant when the duct network is longer, has multiple branches, or needs to supply different rooms with a better capacity to push air. In a project like Sainte-Dorothée, the choice depends on the complete design of the network: lengths, diameters, number of grilles, unit location, air returns, and structural constraints.
At AirGreen, we do not select a machine based solely on BTU. We also look at the system’s actual capacity to operate correctly with the planned ducts. This is an essential nuance to avoid noise problems, low flow, or uneven comfort.
Careful execution by AirGreen, from sizing to final balancing
Each ducted HVAC installation begins well before the equipment is installed. The work starts with an analysis of the building, the client’s needs, and mechanical feasibility. In this project in Sainte-Dorothée, we paid particular attention to the available space for ducts, the position of air outlets, and how to maintain clean access to important components.
A discreet installation, but technically demanding
A ducted system often gives an impression of simplicity once finished: a few grilles on the ceiling or wall, a thermostat, and comfort is felt without any visible device. In reality, this visual simplicity requires great technical rigor.
During this installation, our technicians had to coordinate several elements:
- positioning of the ducted indoor unit;
- adaptation of the metal plenum;
- alignment of duct outlets;
- secure fastening of parts;
- vibration reduction;
- duct passage in a confined space;
- drainage preparation;
- refrigeration connection according to standards;
- electrical validation;
- operation and flow tests.
The metal piece visible in the photo clearly demonstrates this reality. It is not decorative, but it is at the heart of the final comfort. Each opening must correspond to a section of the network. Each joint must be solid. Each connection must be clean to avoid air leaks and efficiency losses.
The importance of a good air return
In a ducted system, the air outlets often attract all the attention. However, the air return is just as important. An indoor unit cannot blow properly if it does not receive enough return air. A poorly positioned or too restrictive return can create noise, reduce performance, and force the system to work unnecessarily.
For this project in Laval, our team took into account the air circulation throughout the entire serviced area. The goal was to ensure comfortable distribution, but also stable operation of the machine. This is a point we often explain to clients, as it is common to see installations where the air outlet is well placed, but the return has been neglected.
Acoustic comfort: a major criterion for Slim Duct systems
Ducted systems are often chosen for their visual discretion, but they must also be discreet in terms of sound. A poorly designed system can generate whistling at the grilles, vibrations in the ducts, or overly noticeable air noise.
To reduce these risks, we work on several aspects:
- appropriate choice of duct diameters;
- gradual transitions when possible;
- stable mechanical fastening;
- limiting unnecessary bends;
- sealing of connections;
- balancing of outlets;
- selection of the correct static pressure level.
Comfort is not measured by temperature alone. A client may have a well-air-conditioned room but be dissatisfied if the system is too noisy. Our goal is therefore to deliver a solution that is comfortable, efficient, and pleasant to use every day.
Mistakes to avoid with a ducted heat pump
Several mistakes can compromise the performance of a GREE ducted system. The first is choosing capacity based only on area, without considering insulation, orientation, windows, number of occupants, and room layout. A unit that is too small will run constantly. A unit that is too large can cause short cycling, uneven comfort, and less effective dehumidification in summer.
The second mistake is underestimating the ducts. In a ducted installation, the ducts are not just accessories. They are part of the system. Their design directly influences performance.
The third mistake is neglecting access for maintenance. Even if the unit is hidden, it must remain accessible for cleaning, inspections, diagnostics, and after-sales service. At AirGreen, we always think about future maintenance from the moment of installation.
The fourth mistake is to compare prices only without comparing the quality of execution. Two contractors may offer a similar machine but deliver two completely different installations. The precision of the work, the quality of the connections, balancing, and after-sales service have real value.
Expertise useful for Montreal, Laval, Longueuil, the North Shore, and the South Shore
This project in Sainte-Dorothée perfectly illustrates the type of work we regularly carry out in Greater Montreal. Ducted systems are increasingly in demand in homes where clients want modern comfort without compromising interior appearance.
In Montreal, we often work in plexes, condos, and houses where technical spaces are limited. In Laval, many projects involve single-family homes with renovations or added comfort zones. In Longueuil and on the South Shore, ducted systems are often chosen for complete renovations or more discreet layouts. On the North Shore, we also see strong demand for efficient heating solutions, especially when clients want to improve winter comfort without multiplying visible devices.
Our status as an experienced GREE dealer also allows us to better support clients in choosing models, parts availability, warranty, network design, and technical service after installation.
A clean and coordinated site
One of the things our clients most often notice is the cleanliness of the site. In a ducted installation, there can be cuts, metal, ducts, insulation, technical passages, and on-site adjustments. Good organization makes all the difference.
In Sainte-Dorothée, our technicians worked methodically to minimize impacts on the home. Rooms were prepared, components handled with care, and connections checked before closing accessible sections. We know that clients judge not only the final result but also the experience during the work: punctuality, communication, respect for the premises, and clarity of explanations.
Practical advice for owners considering a ducted system
For an owner considering a ducted heat pump, here are the most important points to validate before choosing a solution:
-
Confirm the available space
The system must be installed in an accessible location, with enough space for ducts, drainage, and service. -
Choose the right capacity in BTU
The choice must be made based on the building, not just a quick estimate of the area. -
Validate the required static pressure
The duct network must be compatible with the selected unit. -
Plan for a good air return
Without proper air return, comfort and performance can be compromised. -
Think about maintenance from the start
The unit, filter, drain, and fittings must remain accessible. -
Compare installation quality, not just the brand
GREE offers excellent ducted options, but real performance strongly depends on execution.
The result: integrated, stable, and discreet comfort
At the end of this installation in Sainte-Dorothée, the client benefits from a system designed to provide distributed comfort, with minimal visual presence in the served rooms. The plenum and ducts work in the background, while the grilles ensure air distribution much more discreetly than a traditional wall solution.
This is exactly what many homeowners are looking for: a high-performance HVAC solution, but well integrated. A reliable machine, but also an intelligent installation. Efficient technology, but adapted to the actual building.
At AirGreen, we see every ducted project as a complete system, not just equipment installation. The machine, ducts, drainage, electricity, balancing, and future access must all work together. This approach ensures a durable and truly comfortable result.
Why choose AirGreen for a GREE ducted installation?
AirGreen supports clients from Montreal, Laval, Longueuil, the North Shore, and the South Shore in residential and commercial projects that require precision, transparency, and technical expertise. For ducted systems, our advantage lies in a complete understanding of the product and installation.
We offer detailed estimates, building-specific recommendations, installation by qualified technicians, and follow-up after the work. We also help clients better understand the available options: GREE FM Ducted Conduit, low static pressure, high static pressure, All Match Slim Duct R32, capacities from 9,000 to 36,000 BTU, ENERGY STAR certification depending on models, and applicable subsidy possibilities according to current criteria.
A successful ducted installation is not just about hiding a machine in a ceiling. It requires real design. This project in Sainte-Dorothée is an excellent example: a discreet system, a carefully crafted network, thoughtful air distribution, and a result designed for everyday comfort.