Installation of a GREE CHARMO R32 wall-mounted heat pump in Laval
HVAC installation in Laval of a GREE CHARMO R32 wall-mounted heat pump. A compact, efficient solution adapted to confined spaces, carried out by AirGreen with expertise.
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.
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.
Discreet and High-Performance Integration in a Compact Residential Space
At AirGreen, every HVAC installation project is an opportunity to demonstrate our technical rigor and our ability to adapt the best solutions to the concrete realities of homes in Laval. This installation of a GREE CHARMO R32 wall-mounted heat pump is an excellent example: a confined space, a specific wall configuration, and high expectations for comfort and energy efficiency.
From our first visit, we understood that this project required a precise approach. The room had a wall adjacent to a door and a window, with limited vertical space. Optimal positioning of the indoor unit was therefore crucial to ensure uniform air distribution without compromising aesthetics or accessibility.
Technical Analysis and Location Choice
Before any mini-split installation, our team systematically conducts a detailed evaluation:
- Heat load calculation (heat gain and loss)
- Architectural configuration analysis
- Assessment of existing insulation
- Identification of physical constraints (doors, windows, ceilings)
In this specific case in Laval, we opted for a high-level installation, in a strategic corner above the door frame. This positioning allows for:
- Optimal air diffusion throughout the room
- Reduction of cold or hot spots
- Discreet visual integration
The image clearly illustrates this configuration: the wall unit is securely fixed near the ceiling, with sufficient clearance to allow efficient air circulation.
GREE CHARMO R32 Installation: Precision and Expertise
The GREE CHARMO R32 heat pump is renowned for its reliability and compatibility with Quebec's climatic requirements. This model uses R32 refrigerant, which is more environmentally friendly and offers better energy efficiency than previous generations.
Key Installation Steps:
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Wall preparation and mounting bracket fixation
- Verification of structural soundness
- Precise leveling to prevent vibration
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Wall drilling for conduit passage
- Calculated inclination to ensure proper condensate drainage
- Protection of surrounding materials
-
Indoor unit installation
- Secure fastening
- Perfect alignment with the bracket
-
Refrigerant and electrical line connection
- Thermal insulation of pipes
- Leak-tightness checked to prevent any leaks
-
Outdoor unit placement
- Positioned on a stable support (wall or ground)
- Reduction of vibrations and noise
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Functionality test and calibration
- Pressure verification
- Testing in heating and cooling modes
Challenges Encountered and Solutions Provided
Each installation has its specificities. In this project in Laval, two main challenges were identified:
1. Restricted height space
The relatively low ceiling limited positioning options. A poor installation could have:
- Reduced airflow efficiency
- Created a feeling of discomfort
AirGreen Solution: We precisely adjusted the mounting height to maintain a recommended minimum space between the ceiling and the unit, thus ensuring optimal performance.
2. Proximity to an opening (door)
Installing a unit above a door can cause airflow problems.
AirGreen Solution:
- Vane orientation to direct airflow towards the center of the room
- Real-world tests to validate distribution
Energy Performance and Daily Comfort
The GREE CHARMO R32 installed in this Laval residence offers several concrete advantages:
- Efficient heating even in Quebec winters
- Rapid air conditioning during summer periods
- Silent operation, ideal for living spaces
- Optimized energy consumption
Although exact performance varies depending on the chosen capacity and specific installation, this type of wall-mounted heat pump is designed to offer excellent seasonal performance, thereby reducing long-term energy costs.
Subsidies and Eligibility: What You Need to Know
In Quebec, several programs can support the installation of a high-efficiency heat pump. However, eligibility depends on several factors:
- AHRI number of the equipment
- System configuration (indoor/outdoor)
- Certified energy performance
- Type of residence
At AirGreen, we assist each client in verifying eligibility for available subsidies in Montreal, Laval, Longueuil, North Shore, and South Shore. For this project, we validated the criteria upstream to ensure an installation compliant with requirements.
Practical Advice for a Successful Installation
Based on our field experience, here are some essential recommendations:
Choose the right location
- Avoid obstructed areas
- Favor central air diffusion
Don't neglect load calculation
- An incorrectly sized heat pump leads to overconsumption or discomfort
Call on certified professionals
- Inadequate installation can void warranties
- Risks of leaks, noise, or poor performance
Consider HVAC maintenance
- Regular filter cleaning
- Recommended annual inspection
An AirGreen Achievement in Laval
This project perfectly illustrates our approach: a combination of technical precision, customer listening, and energy optimization. The installation of this GREE CHARMO R32 wall-mounted heat pump allowed the client to benefit from increased comfort while improving the energy efficiency of their home.
We have also carried out similar installations in Longueuil, on the South Shore, as well as in Montreal and on the North Shore, each with its specificities. Our expertise allows us to adapt each solution to the specific needs of our clients, whether it is for a condo, a single-family home, or a commercial space.
Why Choose AirGreen for Your HVAC Installation
Choosing AirGreen means choosing:
- Recognized local expertise in Laval and Greater Montreal
- Installations compliant with the strictest standards
- Personalized support from A to Z
- Total transparency on costs and performance
Every heat pump installation, wall-mounted air conditioner, or HVAC system is carried out with the same attention to detail and the same demand for quality.
Conclusion: A Sustainable and Intelligent Solution
The installation of this GREE CHARMO R32 heat pump in Laval demonstrates that a well-chosen and well-installed system can transform the comfort of a space, even under challenging conditions. Thanks to rigorous planning and skilled execution, we delivered a reliable, efficient, and sustainable solution.
At AirGreen, we continue to put our expertise at the service of residents of Montreal, Laval, Longueuil, North Shore, and South Shore, with HVAC installations that truly make a difference.
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 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 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.
- 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.
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. 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).