Installation of a GREE CHARMO R32 Wall-Mounted Heat Pump in Delson – Modern Comfort in a Compact Space
Discover our installation of a GREE CHARMO R32 wall-mounted heat pump in Delson. A high-performance, discreet HVAC solution adapted to confined spaces on Montreal's South Shore.
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.
Smart Integration for Optimal Comfort in a Delson Home
At AirGreen, every HVAC installation project is an opportunity to demonstrate our ability to adapt high-performance solutions to specific realities. In Delson, on the South Shore of Montreal, we recently installed a GREE CHARMO R32 wall-mounted heat pump in a residential space with certain architectural constraints.
Upon our arrival, one element caught our attention: the available space for the indoor unit was limited in height, just above a door, with a slightly lowered ceiling on the side. This configuration required precise installation, both for aesthetic reasons and to ensure optimal air conditioning and heating performance.
Technical Challenges and Custom Solutions
Strategic Positioning of the Wall Unit
Installing a wall-mounted heat pump above an opening like a door requires great precision. In this project, the space available between the top of the door frame and the ceiling was limited. Furthermore, a structural element (a lowered ceiling section) further restricted the margin for maneuver.
Therefore, we:
- Adjusted the installation height to ensure good air circulation
- Verified the minimum clearances recommended by the GREE manufacturer
- Ensured aesthetic alignment with existing moldings
- Optimized the air diffusion angle to avoid dead zones
The result is a clean, discreet, and perfectly integrated installation.
Managing Electrical and Drainage Constraints
As often in South Shore residences, walls are not always designed to easily accommodate a new HVAC installation. We had to:
- Create a discreet passage for the refrigerant piping
- Install an efficient drainage line despite the elevated configuration
- Adapt the electrical supply without compromising safety or aesthetics
Every detail was carefully planned to ensure the system's durability.
The GREE CHARMO R32: Performance and Energy Efficiency
A Heat Pump Adapted to the Quebec Climate
The GREE CHARMO R32 is a wall-mounted heat pump designed to offer excellent heating and cooling performance, even in the demanding climatic conditions of Montreal, Laval, and the South Shore.
Key technical features:
- More ecological and efficient R32 refrigerant
- High energy efficiency (SEER up to approximately 20+ depending on capacity)
- Efficient heating at low temperatures
- Quiet operation, ideal for living spaces
This series is available in several capacities (generally between 9,000 and 24,000 BTU), allowing for precise adaptation to the needs of each room or zone.
Comfort and Advanced Control
During this installation in Delson, the client primarily sought stable comfort in a room heavily exposed to natural light. Thanks to the GREE CHARMO R32 technology:
- Temperature is maintained constantly
- Variations are minimized thanks to the inverter
- The system automatically adjusts according to real demand
The result is a pleasant indoor environment, summer and winter alike.
An Installation Designed for Everyday Living
Aesthetic Integration into a Bright Space
As can be seen from the project, the room benefits from beautiful natural light thanks to the windows. Installing a wall-mounted air conditioner in this type of space requires special attention:
- Avoid blocking light
- Do not visually overload the wall
- Respect existing architecture
The GREE CHARMO R32, with its sleek and compact design, integrates perfectly into this type of residential environment.
Noise Reduction and Improved Comfort
Another important aspect for this client was the noise level. Thanks to precise installation and the choice of high-performance equipment:
- The indoor unit operates very quietly
- Vibrations are minimized thanks to solid mounting
- The acoustic comfort of the room is preserved
Subsidies and Energy Efficiency in Quebec
Eligibility for Assistance Programs
Wall-mounted heat pumps like the GREE CHARMO R32 may be eligible for subsidy programs in Quebec, notably:
- Provincial programs related to energy efficiency
- Incentives for replacing less efficient systems
During our projects in Longueuil, Laval, or on the North Shore, we consistently assist our clients in validating their eligibility and preparing the necessary documents.
Reduction of Energy Costs
Thanks to its high efficiency, this type of system allows for:
- A significant reduction in electricity consumption
- Better control of heating and air conditioning expenses
- An attractive return on investment in the medium term
Common Mistakes to Avoid During Installation
Through our many installations in Montreal and its surroundings, we regularly observe certain errors:
Poor Location Choice
Installing a wall unit without considering:
- Obstacles (doors, ceilings, furniture)
- Air circulation
- Sun exposure
can significantly reduce the system's efficiency.
Undersizing or Oversizing
A thermal load calculation is essential. An improperly sized unit:
- Will run continuously (if too small)
- Will shut off too often (if too powerful)
In this Delson project, we validated all these parameters before installation.
Non-compliant Installation
Poor installation can lead to:
- Refrigerant leaks
- Ineffective drainage
- Reduced equipment lifespan
At AirGreen, we rigorously adhere to HVAC installation standards.
Why Choose AirGreen for Your HVAC Installation
Recognized Local Expertise
We perform installations throughout Montreal, Laval, Longueuil, on the North Shore, and the South Shore. Every project is treated with the same high level of demanding standards.
Personalized Approach
In this project:
- We adapted the installation to a specific architectural constraint
- We optimized performance despite limited space
- We delivered a durable and aesthetic solution
Comprehensive Service
Our services include:
- Needs assessment
- Equipment selection
- Professional installation
- HVAC maintenance advice
Conclusion: A Successful Installation in Delson
This GREE CHARMO R32 wall-mounted heat pump installation in Delson perfectly illustrates our ability to transform constraints into effective solutions. Thanks to rigorous planning and precise execution, we provided our client with a high-performance, discreet system perfectly suited to their environment.
At AirGreen, every project is a concrete demonstration of our expertise in HVAC installation in the Montreal area and its surroundings.
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).