Installation of a GREE All Match Slim Duct R32 ducted heat pump in Pierrefonds-Roxboro: Slim Duct system with outdoor unit on an elevated support
AirGreen installs a GREE ducted heat pump in Pierrefonds-Roxboro: discreet Slim Duct system, outdoor unit on a stand, integrated ducts, and HVAC comfort tailored for Greater Montreal.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.
The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.
A shut-off switch near the outdoor unit isolates it safely for service.
Sitting on the indoor module, it moves heat between the house air and the refrigerant.
Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.
Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.
It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.
It runs the heat pump and the backup heat. It must be compatible with the installed system.
A GREE ducted installation designed for the discreet comfort of a home in Pierrefonds-Roxboro
In Pierrefonds-Roxboro, in the west of Montreal island, our AirGreen team completed an HVAC installation of a GREE ducted heat pump, of the Slim Duct type, also called ducted system or ductable system. This type of solution is perfect for homeowners looking for efficient cooling and heating but with a much more discreet indoor presence than a classic wall unit.
On this project, the focus was not only on choosing the machine. It was also necessary to properly integrate the GREE outdoor unit into the existing architecture, respect the necessary clearances around the condenser, protect the equipment from snow accumulation, and ensure a clean passage of refrigerant lines to the ducted indoor system. The construction photo illustrates the outdoor result: a GREE unit installed on an elevated support, well positioned near the wall, with a neat finish suited to a Pierrefonds-Roxboro residence.
This detail is important. In Greater Montreal, many heat pump installations fail not because of the machine, but due to rushed installation decisions: unit placed too low, insufficient clearances, unstable support, poorly planned condensation drainage, exposed lines, or poorly planned future access. For a ducted heat pump, where the indoor system is often hidden in a ceiling, attic, technical basement, or mechanical space, the quality of the outdoor installation becomes even more essential.
Why the GREE ducted heat pump is relevant for Pierrefonds-Roxboro
Houses in Pierrefonds-Roxboro often feature varied layouts: renovated bungalows, multi-story homes, rear extensions, finished basements, ceilings with limited technical space, and facades where the exterior aesthetics must remain neat. In this context, a GREE ducted heat pump provides better integrated comfort.
Unlike a wall-mounted heat pump, which blows air from a visible unit in the room, the ducted system distributes air through ducts. The diffusion grilles become the only visible elements inside. This approach is especially appreciated when the client wants to keep walls clear, avoid multiple indoor units, and achieve a more uniform temperature across several rooms.
In this project, the choice of a GREE All Match Slim Duct R32 system follows a clear logic: to offer a compact, discreet solution adapted to a home where integration mattered as much as performance. The GREE ducted systems available at AirGreen cover several capacities, including 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 and configurations. The exact model must always be selected according to the actual building sizing, required static pressure, duct length, and number of air outlets.
The outdoor unit: a visible detail that reveals the quality of the work
The GREE outdoor unit installed in Pierrefonds-Roxboro was placed on an elevated metal support. This choice is not only aesthetic. In Quebec, an outdoor unit too close to the ground is more exposed to snow, ice, splashes, dead leaves, and prolonged moisture. The support helps keep the unit at a safer height and facilitates air circulation around the condenser.
In an installation like this, we check several elements before securing the equipment:
- Support stability.
- Side and rear clearances.
- Access to the service panel.
- The routing of refrigerant lines.
- Proximity to windows and passage areas.
- Management of defrost water.
- Exposure to prevailing winds.
- Visual integration with the exterior cladding.
The photo shows a clean installation, with a GREE unit well aligned relative to the wall and the adjacent stone section. This type of positioning helps preserve the exterior appearance while meeting the technical needs of the unit. At AirGreen, we also consider practical details: a technician must be able to access the unit for HVAC maintenance, diagnostics, or future interventions.
The role of the Slim Duct system indoors
Although the photo mainly shows the outdoor unit, the main benefit of this installation lies in the ducted indoor system. The Slim Duct GREE is designed to be installed in a discreet space and supply a duct network. Depending on the configuration, the indoor unit can serve an open area, several adjacent rooms, or a whole section of the house.
One of the major advantages of ducted systems is comfort stability. When the duct network is well designed, air is distributed more gently than with direct wall blowing. The perceived temperature becomes more uniform, and occupants enjoy less visible heating or cooling on a daily basis.
For a project like Pierrefonds-Roxboro, our job is to balance three aspects:
Thermal performance
The system must be able to meet the heating and cooling needs of the targeted area. The choice of BTU capacity must be realistic, without excessive oversizing or undersizing. A unit that is too large may short cycle and reduce comfort. A unit that is too small may run too long without reaching the desired temperature.
Air distribution
A ductable system strongly depends on the quality of the duct network. The ducts must be properly sized, well insulated, and installed with clean bends. The grilles must be positioned to avoid dead zones, uncomfortable drafts, and temperature variations.
The noise level
A well-installed ducted system can be very discreet. However, a poor static pressure calculation or overly restrictive ducts can create noise. That’s why we analyze the available static pressure, the length of the runs, the choice of grilles, and the air velocity before finalizing the installation.
Low pressure or high static pressure: a choice that changes everything
The range of GREE ducted ducts includes options in low static pressure and high static pressure. This distinction directly influences the project design. A low-pressure unit is suitable for short and simple networks, while a high-pressure unit may be necessary when the network has more grilles, longer length, or more resistance.
In Pierrefonds-Roxboro, this type of analysis is essential because existing homes often require routes that are not perfectly straight. It may be necessary to bypass beams, work in a partially closed ceiling, use an already occupied mechanical space, or adapt the network to a previous renovation. The machine must therefore be chosen based on the building’s reality, not just a capacity sheet.
At AirGreen, we explain this difference to clients from the estimation stage. This helps avoid a common mistake: choosing a system because it seems sufficient in BTU, without verifying if it can actually push air through the intended network.
A complete AirGreen solution: installation, sizing, exterior aesthetics, and after-sales service
An installation of a GREE ducted heat pump in Pierrefonds-Roxboro is never just about connecting an outdoor unit and linking an indoor unit. It is a complete project that combines refrigeration, electricity, ventilation, drainage, acoustics, aesthetics, and service access.
The technical challenges of this project
In this installation, several elements required special attention. The outdoor unit had to be placed to respect the available space near the facade without obstructing access around the house. The support had to be stable, well anchored, and suitable for the weight of the unit. The refrigerant lines had to connect to the indoor system with a clean, protected, and coherent path.
The main challenges encountered were as follows:
- Install the outdoor unit in a compact space between the wall cladding, the window, and the traffic area.
- Maintain adequate clearance for air intake and exhaust.
- Elevate the equipment to limit the impact of snow and defrosting.
- Maintain a clean exterior appearance.
- Provide access for service without moving the unit.
- Coordinate the connection with the interior duct network.
- Ensure careful insulation of the refrigerant lines.
Every detail has an impact. An outdoor unit installed too close to a wall can lose efficiency. A poorly insulated refrigerant line can cause condensation or heat loss. An uneven support can promote vibrations. A bad location can make maintenance difficult. Our role is to prevent these problems from the start.
R32 and the GREE All Match Slim Duct models
The GREE All Match Slim Duct R32 series is part of the modern ducted solutions offered by AirGreen. The refrigerant R32, available on some models, is paired with recent equipment designed to offer good efficiency in a compact format. For owners in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this series represents an interesting option when the goal is to combine comfort, discretion, and efficiency.
Depending on the selected models, some GREE ducted heat pumps can offer performance suited to the Quebec climate, with low-temperature heating capacities reaching up to -30 °C depending on the model. This feature must always be validated according to the exact data sheet of the installed device, the system configuration, and the building’s needs.
Subsidies and eligibility: what you need to understand
Clients who contact AirGreen about a heat pump are often interested in available subsidies. Some GREE models may be eligible for financial aid programs when certification and efficiency criteria are met. Eligibility always depends on the exact model, the installed combination, current rules, and documents provided after the work.
We assist our clients in clarifying these elements. We provide the necessary information about the installed equipment, the detailed invoice, and useful documents to make a request when the system is eligible. This transparency is important because a subsidy should never be assumed without validation of the exact model.
Mistakes to avoid before installing a ducted heat pump
Our experience on projects in Pierrefonds-Roxboro, Montreal, Laval, Longueuil, on the North Shore and the South Shore allows us to identify the most common errors in ducted installations.
Choosing the outdoor location only for aesthetics
Appearance matters, but the outdoor unit’s performance depends on clearances, ventilation, and access. A location that is too enclosed can reduce performance and complicate maintenance.
Installing the outdoor unit too low
In Quebec, snow, ice, and defrost water are important factors. An elevated support, as in this project, better protects the unit and facilitates its operation in winter.
Neglecting static pressure
A ducted system can have an excellent unit but a poorly adapted network. Static pressure must be seriously calculated to ensure good airflow in the ducts.
Forgetting access to the filter and drain
A discreet system must remain accessible. HVAC maintenance depends on the ability to reach the filters, drain, panels, and internal components without additional work.
Multiplying outlets without balancing
Adding multiple grilles does not guarantee better distribution. Each outlet must receive the correct airflow. Otherwise, some rooms become too cold, too hot, or insufficiently ventilated.
A customer experience focused on clarity
For this project in Pierrefonds-Roxboro, our approach was the same as for our complex installations in Greater Montreal: analyze, explain, install neatly, and verify. The client wanted a comfortable, discreet, and reliable solution. We therefore presented the advantages of the ducted system, possible constraints, capacity options, and elements to consider for a durable installation.
This transparency is part of our way of working. Before the work, we clarify the expectations and limits of the project. During the installation, our technicians protect the premises, work methodically, and verify the connections. After commissioning, we explain how to use the system, the required maintenance, and the points to watch throughout the seasons.
Why AirGreen for a GREE ducted installation in Pierrefonds-Roxboro
AirGreen has solid experience with GREE ducted systems, including low static pressure, high static pressure series, and All Match Slim Duct R32. Our status as a GREE Elite dealer allows us to support clients with in-depth expertise on integrated configurations, sizing, air distribution, and after-sales service.
Our advantages for this type of project are concrete:
- Technical evaluation adapted to the building.
- Selection of the right model according to thermal load and network.
- Clean installation of the outdoor unit.
- Careful refrigerant connections.
- Duct network design with attention to static pressure.
- Advice on maintenance and use.
- Service available in Pierrefonds-Roxboro and throughout Greater Montreal.
- $5M liability insurance to work with full confidence.
A discreet, efficient result adapted to the climate of western Montreal
This installation in Pierrefonds-Roxboro clearly demonstrates the value of a ducted system when designed with rigor. The GREE outdoor unit is neatly integrated into the facade on an elevated support, while the Slim Duct indoor system allows for a more discreet air distribution in the home. The client thus obtains a modern heating and cooling solution, adapted to the Quebec climate and designed for daily comfort.
For homeowners in Pierrefonds-Roxboro, Montreal, Laval, Longueuil, the North Shore, and the South Shore, a GREE ducted heat pump can be an excellent choice when interior aesthetics, energy efficiency, and installation quality are priorities. However, the result depends on precise sizing, choosing the right model, and on-site execution.
At AirGreen, we treat every ducted project as a complete system. The outdoor unit, indoor unit, ducts, refrigerant lines, support, drainage, and future maintenance must all work together. This approach allows us to deliver a reliable, clean, and truly home-adapted HVAC installation.
The big day, step by step
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
The equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
Access protected, old unit disconnected and removed when it is being replaced.
Electric furnace or air handler, with its coil, connected to the supply and return ducts.
On a level base, raised above the snow, with free space all around.
Insulated, they enter through a sealed opening and run to the indoor coil.
Dedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
Leak test, vacuum, start-up, airflow check and a test of both modes.
Filter, thermostat, backup heat in extreme cold: what to know before winter.
- The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
- The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
- Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
- The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
- The outdoor unitOn a level base, raised above the snow, with free space all around.
- The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
- Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
- Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
- The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
What would it look like at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Check the indoor module's filter.
- Clear winter debris from the outdoor unit.
- Test cooling before the heat arrives.
- Check the filter more often in peak season.
- Keep registers and returns clear.
- Watch condensate drainage near the coil.
- Change or clean the filter.
- Test heating and backup heat before the cold.
- Book periodic maintenance.
- Clear snow around the outdoor unit.
- Store nothing in front of the indoor module.
- Note any unusual noise or smell and call us.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. A central heat pump uses the house's ducts.
It connects to the existing ducts to heat and cool everywhere.
2. In extreme cold, electric backup heat can take over.
The indoor module (furnace or air handler) works with the heat pump and takes over in extreme cold.
3. The filter only gets changed when the unit breaks down.
A dirty filter cuts airflow. It gets checked regularly.
4. You can reuse the old unit's size without checking.
The house may have changed: insulation, windows, added rooms. Capacity is confirmed on site.
0 / 4 right answers
What people ask us about this kind of work
Can I keep my current ducts?
What happens in extreme cold?
Furnace, air handler, ducted: what is the difference?
Are there grants?
Do I need a permit?
How much can I save?
How is the LogisVert assistance calculated?
Will my current thermostat work?
Central or wall units: which one?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).