In the Plateau-Mont-Royal neighbourhood, work often takes place in brick buildings with already busy exterior walls: downspouts, wires, cornices, close neighbors, and sometimes significant aesthetic constraints. This is exactly the kind of context where a Gree Charmo wall-mounted heat pump makes perfect sense: compact, efficient, and capable of providing consistent comfort year-round—provided the installation is carefully planned.
In this AirGreen project, the objective was clear: to improve the comfort of a typical dwelling in the area (brick, restricted access, exposed facade), reduce noise and vibrations , and guarantee a clean, durable and easy-to-maintain installation.
Why a Gree Charmo wall-mounted heat pump is a good choice on the Plateau
The Plateau is often:
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closed or semi-open rooms (living room, bedroom, office) where a wall light performs very well;
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a real need for air conditioning in summer (heat islands, sun on the facade);
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a need for efficient heating in the off-season (and often for longer than we think).
The Gree Charmo fits perfectly into this logic: a residential solution that offers precise regulation , controlled consumption and constant comfort, without turning the home into a major construction site.
Type of system installed
This is a wall-mounted heat pump (mini-split/wall unit) , with:
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an outdoor unit (condenser) installed on a wall bracket;
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an indoor unit (wall head, not visible in the photo) supplied by insulated refrigerant lines.
This is the most common and logical format in several buildings on the Plateau: minimally intrusive , quick to install, efficient, and adaptable to the constraints of the building.
What the photo reveals about the installation (key details)
Even without seeing the interior, the image provides several very concrete clues about the quality and logic of the editing:
1) Outdoor unit on sturdy wall brackets
The unit is mounted on metal brackets anchored to the brick wall. This is a smart choice when:
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we want to avoid taking up floor space (narrow courtyard, passageway, layouts);
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we want to reduce exposure to snow, standing water and debris;
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We want to make cleaning and access easier.
2) Anti-vibration pads/isolators
Blue spacers are visible between the unit and the supports: this is typically a component used to limit vibrations. On the Plateau, this is particularly important because:
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Brick walls can transmit vibrations;
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the neighborhood is close;
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Acoustic comfort is part of the “true luxury” of everyday life.
3) Refrigeration connections well insulated and protected
The pipes are visible beneath the unit, wrapped in continuous insulation and finishing tape. Specifically, they serve to:
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limit heat loss;
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protect the insulation against moisture and UV rays;
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maintain a clean finish (important when the installation is visible).
4) Presence of an R-32 refrigerant rating
The “A2L R32” label is visible on the unit. Without going into unnecessary details, this is a relevant point because R-32 is associated with modern systems, with good energy performance — and this also requires rigorous installation (fittings, best practices, etc.).
5) Layout designed for unit ventilation
The unit is installed with reasonable clearance, allowing air to circulate properly around the fan. A simple but crucial detail: a "stifled" unit loses efficiency, works harder, and wears out faster.
Our AirGreen approach: a clean, quiet and sustainable installation
A wall-mounted heat pump isn't just about "installing a machine." For a system like the Gree Charmo to reach its full potential, the focus is on the factors that make a difference over 5 to 10 years:
Sizing and usage logic
Even when the client primarily wants "air conditioning", we always verify the reality of the accommodation:
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orientation and sunlight;
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volume to be treated and air circulation;
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occupancy habits (teleworking, bedrooms closed at night, etc.).
Because a wall light that is too strong can create discomfort (cycles, noise, air that is too dry), and a wall light that is too weak will work continuously without achieving the expected result.
Noise and vibration reduction
On a brick wall, the preferred option is:
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solid supports;
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anti-vibration isolators;
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impeccable fixing and leveling;
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The pipes are routed to avoid resonance points.
The goal: a system that you forget about, even when it's running.
Discreet exterior finish
In a neighborhood like the Plateau, the finishing touches matter. The aim is always:
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a clean transition of connections;
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a well-sealed, weatherproof insulation;
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a clean visual result (no “spaghetti” of pipes).
Simplified future maintenance
We install it so that it's easy to maintain:
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realistic access for cleaning;
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sufficient space for ventilation;
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stable assembly (less movement = less wear).
Performance: what the customer experiences on a daily basis
A well-installed Gree Charmo is:
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a stable temperature (fewer variations);
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comfortable air conditioning even during Montreal's heat waves;
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efficient heating in the off-season and during colder periods, depending on the configuration and sizing;
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a noticeable improvement in comfort in the main rooms.
And above all: a solution that integrates well into an existing dwelling, without major work.
Common mistakes we avoid (and that you want to avoid)
In Greater Montreal, we often see facilities that "work" but age poorly. Here's what we systematically avoid:
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Incorrectly sized support → vibrations, noise, risk of misalignment.
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Insufficient clearance around the unit → decreased performance, overheating, accelerated wear.
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Poorly installed pipe insulation → loss of efficiency, condensation, rapid degradation.
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Poorly planned connecting routes → ugly finish, friction points, risk of damage.
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Too “rigid” a fixing to the building without absorption → resonance in the wall.
These are small details… that become big problems after one or two winters.
Conclusion: a typical Plateau installation, done properly
This project perfectly illustrates what we love to deliver at AirGreen: a clean , solid , quiet Gree Charmo wall-mounted heat pump installation, designed for the realities of a dense neighborhood like Plateau-Mont-Royal .
When the outdoor unit is properly positioned, well supported, and the connections are correctly protected, the customer benefits:
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in immediate comfort,
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in peace and quiet (less noise, less vibration),
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and in long-term reliability.