Installation of a GREE CLIVIA R32 wall-mounted heat pump in Repentigny: a high-performance mini-split solution on a flat roof
AirGreen installs a GREE CLIVIA R32 wall-mounted heat pump in Repentigny: R32 mini-split on a flat roof, raised support, HVAC efficiency, and lasting comfort.
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An HVAC installation designed for residential comfort in Repentigny
In Repentigny, on a flat roof bordered by mature trees and exposed to the typical seasonal variations of the Lanaudière region, our AirGreen team recently installed a GREE CLIVIA R32 wall-mounted heat pump, a mini split solution designed to offer an excellent balance between comfort, energy efficiency, and reliability.
This project perfectly illustrates the type of HVAC installation we frequently carry out in Greater Montreal, particularly in Montreal, Laval, Longueuil, on the North Shore, and the South Shore: a precisely installed outdoor unit, seamless integration into the existing environment, and particular attention paid to the durability of the mounting.
The photo of this installation clearly shows the GREE outdoor unit positioned on a raised base, above a flat roof. This choice is not insignificant. In HVAC, especially in Quebec, the external location of a heat pump plays an essential role in long-term performance, ease of maintenance, protection against snow accumulation, drainage management, and the reduction of vibrations transmitted to the building's structure.
Why the GREE CLIVIA R32 model was relevant for this property
The GREE CLIVIA R32 is a wall-mounted heat pump appreciated for its efficient operation, inverter technology, and its use of R32 refrigerant, recognized for its better environmental profile compared to some older refrigerants used in residential applications.
For this installation in Repentigny, the client was looking for a solution capable of ensuring stable comfort during warm periods, while providing significant heating capacity during colder seasons. For many residences on the North Shore, a mini-split wall system represents a logical solution when wishing to improve comfort in a specific area without undertaking major ductwork.
The GREE CLIVIA R32 wall-mounted heat pump notably allows for:
- modulating operation thanks to inverter technology;
- better temperature stability in served rooms;
- reduced noise level when the installation is well planned;
- optimized energy consumption compared to several older systems;
- flexible installation, ideal for houses, condos, and small residential buildings;
- compatibility with common air conditioning and auxiliary heating needs in Quebec.
For Repentigny homeowners, this type of wall-mounted air conditioner with heat pump function addresses a very concrete reality: temperature differences are significant from one season to another, and indoor comfort must remain constant without generating an unnecessarily high electricity bill.
Technical details that made a difference on this roof
An outdoor unit installed on raised supports
The most visible element of this installation is the mounting of the outdoor unit on a raised structure. This configuration has several technical advantages.
First, it protects the appliance from stagnant water, dead leaves, and snow accumulation. On a flat roof, these factors must be taken seriously. An appliance placed too low can be exposed to repeated cycles of humidity, freezing, and thawing. In the long term, this can harm the durability of components, complicate HVAC maintenance, and reduce the overall performance of the system.
Secondly, this elevation facilitates access to the underside of the unit for future inspections. At AirGreen, we always think about post-installation. A well-designed HVAC installation must be clean on commissioning day, but also practical to maintain three, five, or ten years later.
The base installed under the GREE unit is stable, well-aligned, and designed to distribute the load correctly on the roof. The positioning also respects the necessary space around the appliance to ensure good airflow. This detail is often underestimated. An outdoor heat pump needs sufficient clearance to effectively discharge and draw in air. When the unit is crammed into too small a space, performance decreases, and the compressor may work harder than necessary.
A clean installation despite a cluttered technical environment
The roof where we worked already contained several mechanical elements: ducts, ventilation outlets, electrical boxes, another outdoor unit, and parapets. This type of environment requires rigorous planning.
Before fixing the appliance, our team evaluated:
- the distance between the outdoor unit and the wall serving the indoor unit;
- the optimal routing of refrigerant lines;
- wiring protection;
- surface stability;
- potential leaf and snow accumulation areas;
- safe access for future services;
- the distance from other existing equipment.
The result is a simple, functional installation well-integrated into the roof. The lines are neatly routed, without unnecessarily cluttering circulation areas. This kind of detail distinguishes a quick installation from a professional one.
The importance of R32 refrigerant in new installations
The GREE CLIVIA R32 model uses R32 refrigerant, which is increasingly present in modern residential equipment. For homeowners, this means an appliance designed according to current HVAC market trends, with better thermal efficiency and a more environmentally responsible approach.
When choosing a wall-mounted heat pump, the type of refrigerant is not just a technical detail. It influences the design of the appliance, its efficiency, and its relevance in a market where technologies are evolving rapidly. For a residence in Repentigny, choosing an R32 model allows for the benefit of a more current system, while relying on a recognized brand in the mini split sector.
A heat pump adapted to the realities of Repentigny and the North Shore
Repentigny presents several specific characteristics that we regularly encounter in our projects on the North Shore: single-family homes, buildings with flat or semi-flat roofs, residential extensions, areas exposed to winds, and properties where clients want to improve comfort without overhauling the entire heating infrastructure.
In this context, the wall-mounted heat pump is often a very effective option. It can target a main living area, a floor, a home office, an open-plan area, or a room difficult to air condition with the existing system.
For this project, the GREE CLIVIA R32 model offered a coherent response to the client's needs: a powerful wall system, discreet indoors, efficient for air conditioning, and useful for heating during a good part of the year.
Mistakes to avoid when installing on a flat roof
Installing a wall-mounted air conditioner or mini split heat pump on a flat roof may seem simple at first glance, but it involves significant pitfalls. Here are the mistakes we systematically avoid at AirGreen.
Placing the unit directly on the membrane
An outdoor unit should never be installed without considering the protection of the roofing membrane. A poor base can damage the surface, cause pressure points, or complicate drainage. In this project, the installed structure allows the appliance to be elevated while stabilizing the entire assembly.
Neglecting vibrations
Even a quiet appliance can transmit vibrations if the base is poorly designed. We use appropriate supports and check the unit's balance to limit structural noise.
Forgetting access for maintenance
A hard-to-access appliance will be more expensive to maintain and less frequently inspected. Here, the space around the unit allows for clear intervention during future HVAC maintenance, cleaning, or diagnosis.
Poor management of refrigerant line routing
Poor line routing can detract from aesthetics, increase wear and tear, and make repairs more complex. Our technicians plan each route to protect the ducts and maintain a clean finish.
Underestimating winter conditions
In Repentigny, as in Montreal, Laval, Longueuil, on the North Shore and the South Shore, snow, ice, and freeze-thaw cycles must be considered from the outset. A poorly positioned heat pump can quickly lose efficiency or require additional interventions.
The installation process by our AirGreen team
The project began with an assessment of the ideal location. Our team analyzed the roof, available clearances, line access, proximity to other equipment, and the best orientation for the outdoor unit.
Once the positioning was confirmed, we prepared the support base. This step requires precision, as the unit must be perfectly stable. A slight misalignment may seem minor, but it can lead to vibrations, stress on connections, or premature wear.
Next, our technicians proceeded with the installation of the GREE outdoor unit, the connection of the refrigerant lines, the electrical connection, and the verification of the system's airtightness. As always, commissioning was carried out according to a rigorous sequence:
- visual inspection of the installation;
- connection validation;
- pressure test and leak detection;
- vacuuming the lines;
- system startup;
- validation of air conditioning operation;
- verification of basic parameters;
- explanation of good usage practices to the client.
This rigor is essential. A quality heat pump can only deliver its full performance if the installation is carried out correctly.
A discreet, solid, and durable result
What makes this installation interesting is the combination of clean technical execution and a visually discreet result. The outdoor unit integrates well into the roof. It is accessible without being cumbersome, raised without being unstable, and positioned to allow adequate airflow.
For the client, the benefit is immediate: improved indoor comfort, an effective solution for warm periods, and practical auxiliary heating during transitional seasons. For our team, it is also a clear example of what we seek in every project: a neat, reliable installation, designed to last.
Why choose AirGreen for a GREE installation in Repentigny
At AirGreen, we install HVAC systems in very diverse contexts: single-family homes, condos, plexes, commercial premises, mechanical rooms, apartments, and buildings with flat roofs. This experience allows us to adapt each project to the reality of the building, rather than applying a standard solution.
For GREE wall-mounted heat pump installations, we pay particular attention to:
- selecting the right model according to the area and configuration;
- the quality of the outdoor support;
- respecting technical clearances;
- the cleanliness of line routing;
- drainage efficiency;
- electrical safety;
- durability in winter conditions;
- ease of access for future maintenance.
Our clients in Repentigny, Montreal, Laval, Longueuil, on the North Shore and the South Shore often contact us after comparing several options. Their main concern is rarely just the price. They especially want to know if the appliance will be well-chosen, well-installed, eligible for relevant programs when possible, and easy to maintain over the years.
About grants and energy efficiency
Depending on the specific model, installed capacity, applicable criteria, and eligibility lists, certain heat pumps may be eligible for energy grants, particularly under programs like Hydro-Québec's LogisVert. As these criteria can vary, we always verify available information at the time of quotation and assist our clients in understanding the required documents.
For an installation like this GREE CLIVIA R32, energy efficiency remains a major argument. A well-sized mini-split system can reduce reliance on certain less efficient heating systems during transitional seasons, while offering much more comfortable air conditioning than a mobile appliance or an old window unit.
The key remains sizing. A unit that is too small will constantly work at full capacity. A unit that is too large risks cycling too often, which can affect comfort and dehumidification. This is why our team always evaluates the area, insulation, solar orientation, ceiling height, and interior configuration before recommending a model.
Practical tips to maintain the performance of your wall-mounted heat pump
After an installation like this, a few simple steps can help maintain system performance.
Clean filters regularly
The indoor unit filters should be cleaned according to usage. In a home where the heat pump operates daily, frequent cleaning helps maintain airflow and comfort quality.
Keep the outdoor unit clear
Even on a roof, it is important to ensure that leaves, branches, and debris do not accumulate around the unit. The photo of this installation shows an environment with many trees; therefore, it is particularly important to check the space around the unit in the fall.
Plan professional maintenance
Periodic HVAC maintenance allows for checking the general condition of the system, cleaning components, confirming performance, and detecting signs of wear before they become costly problems.
Use modes correctly
A mini-split heat pump works best when it maintains a stable temperature rather than undergoing large setpoint fluctuations. We always explain to the customer how to use the air conditioning, heating, dehumidification, and ventilation modes according to the seasons.
An installation representative of our AirGreen approach
This installation of a GREE CLIVIA R32 wall-mounted heat pump in Repentigny accurately represents our way of working: observing the building, understanding the real constraints, choosing an intelligent location, installing solidly, rigorously testing, and delivering a system ready to perform.
In the HVAC field, the quality of the result depends as much on the chosen equipment as on the on-site execution. Two installations of the same model can yield very different results if the support, lines, clearances, or commissioning are not carried out correctly.
That's why we focus on a comprehensive approach. We don't just install an outdoor unit and a wall-mounted head. We design a comfort solution adapted to the space, the local climate, and the client's expectations.
A well-installed GREE heat pump for lasting comfort in Repentigny
For this project in Repentigny, the GREE CLIVIA R32 proved to be a relevant solution to improve indoor comfort with modern technology, efficient operation, and an installation adapted to a flat roof.
Thanks to a raised base, thoughtful positioning, clean connection, and professional commissioning, this HVAC installation offers the customer a reliable solution for the seasons to come. This level of precision is what makes the difference between a merely functional installation and an installation designed to last.
At AirGreen, we continue to support homeowners in Repentigny, Montreal, Laval, Longueuil, the North Shore, and the South Shore with heat pump, wall-mounted air conditioner, mini-split, and HVAC maintenance solutions adapted to Quebec's realities.
The job tools
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.
How the job unfolds
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
What we check on a job like this one
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.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
The right pages, at the right time
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
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).