Installation of a GREE All Match Slim Duct R32 Ducted Heat Pump in Ahuntsic-Cartierville: Custom Ducts, Discreet Integration, and Centralized HVAC Comfort
AirGreen installs a GREE All Match Slim Duct R32 ducted heat pump in Ahuntsic-Cartierville with custom metal ducts, discreet integration, and uniform HVAC comfort.

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 project in Ahuntsic-Cartierville where every duct matters
In Ahuntsic-Cartierville, installing a GREE All Match Slim Duct R32 ducted heat pump requires much more than just equipment installation. In this project carried out by AirGreen, the priority was clear: to offer a discreet, efficient, and well-integrated HVAC system capable of heating and cooling the space effectively without imposing a visible wall unit in the main rooms.
The photo taken during the project shows an element often overlooked by the general public but absolutely central in a ducted system installation: the preparation of a galvanized metal duct section. This type of component may seem secondary at first glance, yet it directly influences the quality of airflow, noise level, comfort distribution, and the durability of the installation. In a Slim Duct system, the indoor unit remains hidden in a false ceiling, mechanical space, or technical area, while the air is directed to the rooms through a precisely designed duct network.
At AirGreen, we know that a successful HVAC installation relies on the balance between equipment, duct layout, static pressure, insulation, drainage, the location of the outdoor unit, and future access for HVAC maintenance. This project in Ahuntsic-Cartierville perfectly illustrates this approach: an invisible solution for the client on a daily basis, but built with great technical rigor behind the ceilings and diffusion grilles.
Why choose a ducted heat pump in a neighborhood like Ahuntsic-Cartierville?
Ahuntsic-Cartierville includes a wide variety of buildings: single-family homes, duplexes, triplexes, renovated condos, properties with extensions, and housing where technical spaces are sometimes limited. In this context, a classic wall-mounted heat pump is not always the best solution, especially when the client wants to maintain a clean interior aesthetic.
The ducted heat pump precisely meets this need. The main equipment is hidden, and only the supply and return air grilles remain visible. Comfort is distributed more gently, less locally, with better architectural integration.
This solution is particularly relevant when the client is looking for:
- discreet air conditioning in open rooms;
- stable heating without a visible wall unit;
- air distribution through multiple grilles;
- better harmony with a renovated decor;
- a solution adapted to a false ceiling or a technical space;
- a system compatible with a multizone approach depending on the configuration.
In this project, the choice of a GREE All Match Slim Duct R32 system allowed combining performance, discretion, and installation flexibility, while respecting the building constraints.
The essential role of the custom metal duct
The duct visible in the photo is not just an accessory. In a ducted system installation, every transition, every connection, and every metal section must be designed to reduce pressure losses and maintain stable airflow.
A common mistake is to believe that a good device alone guarantees comfort. In reality, even an excellent heat pump can deliver disappointing results if the ducts are poorly sized, poorly insulated, or too restrictive. That is why our technicians pay special attention to ducts made or adjusted on site.
In this installation in Ahuntsic-Cartierville, the metal section was used to create a clean transition between the ducted unit and the distribution network. This work requires precision: the joints must be straight, the connections must limit air leaks, and the shape of the duct must respect the available path in the building.
A good duct must fulfill several functions
A well-designed duct must:
- maintain sufficient airflow;
- limit pressure losses;
- reduce vibrations;
- avoid whistling at the grilles;
- facilitate air balancing;
- remain accessible when necessary;
- resist moisture and temperature variations;
- fit neatly into the available space.
In a ducted system, the quality of the duct has a direct impact on the comfort experienced. A section that is too narrow can create a restriction. A transition that is too abrupt can increase noise. A poorly sealed joint can cause air loss into an unconditioned space. That is why we treat each ventilation piece as a performance element, not just a finishing component.
GREE All Match Slim Duct R32: a range suited for integrated projects
The GREE All Match Slim Duct R32 range is part of the ducted solutions offered by AirGreen for installations in Montreal, Laval, Longueuil, on the North Shore and the South Shore. It includes different capacities, notably 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU, allowing the equipment choice to be adapted to the building and the client's real needs.
This type of system is often chosen for projects where one wants comfort close to a central system but with a more flexible installation than a full traditional network. Depending on the chosen model and configuration, GREE technology can be integrated into residential projects, condos, renovated housing, or spaces where aesthetic control is a priority.
The important technical elements of this product family include:
- technology R32, a modern refrigerant used in several recent models;
- Slim Duct formats suitable for tight spaces;
- options for low static pressure or high static pressure depending on the duct network;
- varied capacities to fit the actual sizing;
- Energy Star certification on eligible models;
- heating performance reaching up to -30 °C depending on the models;
- discreet integration in ceiling, false ceiling, or technical space;
- compatibility with a uniform comfort approach through air diffusion.
The final model choice should never be improvised. At AirGreen, we assess the space to be served, insulation, openings, ceiling height, sun exposure, duct routing, and the required static pressure before recommending a precise capacity.
Low static pressure or high static pressure: a choice that changes everything
In a ducted installation, static pressure is one of the most important factors. It represents the fan's ability to push air through the duct network. The longer or more complex the network, the greater the resistance.
A low static pressure system may be suitable for short, simple ducts with few outlets. A high static pressure system becomes more relevant when multiple zones need to be served, a longer distance must be covered, or routing constraints must be managed.
In Ahuntsic-Cartierville, this analysis was decisive. The goal was not just to run a duct where there was space, but to create a logical, efficient, and quiet path. The metal duct prepared on site reflects this step: adapting air distribution to the actual building rather than forcing the building to accept a standard solution.
An installation designed for comfort, but also for future service
A ducted heat pump is often chosen because it goes unnoticed. However, to keep it reliable, access to the system must be planned from the start. This reality is especially important in buildings in Montreal and surrounding areas, where false ceilings, soffits, and technical spaces can be tight.
Our technicians plan the installation taking several elements into account:
Access to the indoor unit
The ducted unit must be able to be inspected, maintained, and diagnosed without unnecessary demolition. A poorly placed or missing access hatch can turn simple maintenance into a complex intervention. We therefore plan access to filters, the drain, connections, and main components.
Condensate drainage
In cooling mode, the device removes moisture from the air. This water must be reliably drained. The drain must have a clean path, an adequate slope when possible, and a configuration that limits the risk of backflow. When gravity is not enough, a drainage pump may be necessary depending on the project.
Duct insulation
Ducts carrying cold air must be properly insulated to reduce losses and prevent condensation. A poorly insulated ducted installation can cause moisture problems, reduce energy efficiency, and harm comfort.
Noise reduction
Acoustic comfort is an important criterion. In a Slim Duct installation, we pay special attention to transitions, fastenings, air velocity, and the choice of grilles. A well-installed system must be efficient without creating disturbing noise.
The GREE outdoor unit and managing the space around the building
The photo also shows the outdoor work environment, with the GREE box and an outdoor unit installed in a side passage. This type of configuration is common in Ahuntsic-Cartierville: the outdoor space must be used intelligently, without hindering circulation, service access, or the required clearance around the unit.
The outdoor unit must be positioned to ensure:
- good air circulation;
- access for maintenance;
- a stable installation;
- a reasonable distance from openings and obstacles;
- proper management of refrigerant lines;
- vibration protection;
- a compliant electrical connection.
In the dense residential neighborhoods of Montreal, the quality of the outdoor installation is as important as the indoor integration. A poorly placed unit can cause noise, performance loss, or difficulties during future service calls. That is why we carefully assess the location before the final installation.
Subsidies, energy efficiency, and choosing the right model
Clients considering a heat pump in Ahuntsic-Cartierville often want to understand the real financial impact of the project. The installation price is important, but it is also necessary to consider energy efficiency, the comfort achieved, the quality of the installation, and available subsidy programs.
Some GREE models may be eligible for financial aid programs when technical criteria are met. Eligibility depends on the exact model, certification, capacity, and conditions in effect at the time of installation. At AirGreen, we provide the necessary information so that the client can proceed with the right documents.
The choice of a GREE All Match Slim Duct R32 ducted heat pump can thus meet several objectives:
- improve comfort in summer;
- provide efficient heating in mid-season and winter depending on the model;
- reduce the use of less efficient systems;
- preserve the interior appearance;
- increase the functional value of the property;
- benefit from a modern and well-integrated system.
AirGreen expertise tailored to ducted projects in Montreal, Laval, Longueuil, North Shore, and South Shore
The installation of a Ducted System - Ducted Ducts - Slim Duct - Ductable requires a different expertise than a standard wall installation. It is necessary to understand air behavior, anticipate pressure losses, choose the right accessories, manufacture or adapt ducts, plan for future maintenance, and carry out a thorough commissioning.
At AirGreen, our status as a GREE Elite dealer allows us to offer in-depth expertise on GREE ducted systems, including the All Match Slim Duct R32 series. Our teams are experienced with complex residential projects, condominium constraints, renovations in existing buildings, and installations where interior aesthetics matter as much as performance.
The key steps of our intervention in Ahuntsic-Cartierville
For this project, our method was based on a rigorous process:
1. Space and actual need analysis
Before installation, we assessed the areas to be served, passage constraints, the location of the indoor unit, possible duct routes, and the location of the outdoor unit. This step helps avoid surprises and offers the client a realistic solution.
2. Selection of the appropriate GREE system type
The GREE range includes several ducted options. The model must be chosen based on the required capacity, necessary static pressure, and comfort goals. Too high a capacity can cause short cycles; too low a capacity can leave some areas uncomfortable. The right choice lies in balance.
3. Preparation of ducts and transitions
The visible metal section in the photo illustrates the preparatory work needed to achieve a clean network. Transitions must be well-formed, securely assembled, and carefully sealed. This is part of the work that clients often no longer see after finishing but makes a big difference daily.
4. Refrigeration and electrical installation
The refrigerant lines, drain, communication wiring, and electrical supply must be installed according to applicable regulations. Refrigerants must only be handled by qualified professionals. At AirGreen, we carry out complete, compliant installations designed for long-term reliability.
5. Commissioning and verification
Once the installation is complete, we verify the system's operation, airflow, temperatures, drainage, noise, and control response. This step ensures that the unit not only starts but delivers the expected comfort.
AirGreen's tips for a successful ducted project
For homeowners considering a ducted HVAC installation in Montreal, Laval, Longueuil, on the North Shore or the South Shore, here are the key points to remember:
Do not choose based on price alone
A poorly designed ducted system may cost less initially but cause more noise, uneven distribution, and high correction costs. The quality of ducts, drainage, and commissioning matters as much as the machine itself.
Plan maintenance access from the start
A hidden system must remain accessible. Filters, drains, and connections must be inspectable. An installation without proper access can become problematic after a few seasons.
Validate the static pressure
The right unit must be chosen based on the duct network. This is an essential technical step, especially if several grilles are planned.
Consider acoustic comfort
Air velocity, metal transitions, fastenings, and grilles influence noise. A good installation must be comfortable both in terms of temperature and sound environment.
Entrust the project to a team experienced with ducted systems
The ducted system is not a standard installation. It requires more advanced planning, more precise execution, and a good understanding of building constraints.
The result: a discreet, clean, and durable solution
This project in Ahuntsic-Cartierville demonstrates the importance of well-planned work. The client obtains an HVAC solution that integrates discreetly into their space, with air distribution designed for real comfort. Behind the grilles, every duct, every transition, and every connection contributes to the final result.
The GREE All Match Slim Duct R32 ducted heat pump is a particularly interesting option for customers who want to avoid visible units, improve their comfort, and benefit from a modern installation. When properly sized and well installed, it offers a refined, stable heating and cooling experience adapted to the realities of buildings in the Montreal area.
AirGreen supports owners at every step: estimation, equipment choice, installation, commissioning, explanation of operation, support for subsidy documents, and after-sales service. It is this comprehensive approach that allows delivering reliable projects in areas like Ahuntsic-Cartierville, but also in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
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).
