In a Ville-Marie apartment, where air often circulates continuously between the kitchen, living room, and bedrooms, a wall-mounted heat pump quickly becomes the heart of comfort. But this heart gets clogged. Fine dust, textile particles, micro-debris, and humidity eventually settle in the filters, on the evaporator fins, and especially around the fan (fan wheel). The result: less consistent airflow, odors at startup, a less uniform feeling of heating, and increased operating noise.
At AirGreen , we perform a complete cleaning of a Gree wall-mounted heat pump with a simple approach: protect your home, thoroughly clean what really matters (not just the filters), and then put the unit back into service with clear checks. The photo shows a Gree wall unit (indoor head) with the air vent open—a good indicator of regular use and the need for periodic cleaning, even if the unit appears "clean" at first glance.
Cleaning context: residential interior in Ville-Marie
In urban environments, there are many sources of particulate matter: traffic, street dust, seasonal construction, kitchen ventilation, and even normal accumulation from fabrics (curtains, sofas, bedding). With a wall-mounted heat pump, these particles are concentrated in the same place: the indoor unit and the air circuit of the wall-mounted unit.
The most frequent symptoms that prompt wall-mounted heat pump cleaning in this area are:
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Airflow less "direct", even in high fan mode
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Musty or "sour" smells during startup
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Increased noise (turbine slightly unbalanced due to fouling)
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The feeling of heat varies from room to room.
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Abnormal condensation or marks around the shutter (depending on the season)
Machine type: wall-mounted heat pump (mini-split / wall unit)
This is a Gree wall-mounted heat pump (indoor unit). This type of unit works with:
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A heat exchanger (coil) that absorbs or releases heat
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A turbine that draws air from the room and sends it out through the flap
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A condensate tray and a drain that remove the water (especially in air conditioning, but also in specific modes depending on conditions)
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Sensors (temperature, sometimes presence/air) that influence comfort
Even though the outdoor unit is not shown in the photo, the wall head shows the critical areas to be treated during a serious cleaning: filters + heat exchanger + turbine + condensate tray + drain .
Model: Realistic identification
The exact model is not visible in this image. In this case, we remain consistent and transparent: it is a Gree wall-mounted heat pump (residential series), typically installed in condos or apartments for heating and cooling. The cleaning protocol remains the same, regardless of the specific series: the goal is to restore airflow and heat exchange.
The salient cleaning details that can be observed and are probable
Even in a "clean" photo, certain clues matter:
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Open blower flap: area where dust often settles (flap lip, directional blades, air outlet)
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Inside the grids: areas where fine particles accumulate
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Regular operation: In Montreal, a heat pump runs for extended periods in heating mode during the winter, which accelerates the clogging of filters and the heat exchanger.
This is precisely the type of situation where a simple filter rinse is not enough: the turbine and the condensate tray become the real sensitive points (odours, humidity, deposits).
Our AirGreen method: a complete, clean and controlled cleaning
1) Site protection and preparation
Before opening the appliance, we protect the surfaces: walls, floor, and nearby furniture. In residential settings, this is non-negotiable. We also install a collection cover (washing bag/recovery system) when cleaning requires more thorough rinsing.
Objective: to clean thoroughly without soiling your interior.
2) Opening and inspection of the Gree wall head
We open the hood, remove the filters and perform a quick inspection:
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Condition of the filters (loaded with dust, light grease in the kitchen area, etc.)
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Condition of the heat exchanger (fins: compacted dust or thinner film)
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Turbine condition (deposits on the blades)
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Condition of the condensate tray (residue, organic film)
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Appearance of the drain (free flow or risk of blockage)
This step allows us to adjust the intensity of the cleaning: a “visually correct” device may hide a heavily loaded turbine.
3) Filter cleaning: the first barrier
The filters are cleaned carefully (dust removal + gentle washing). Aggressive practices that deform the filter media are avoided.
Immediate benefit: improved airflow and reduced load on the fan.
4) Cleaning the heat exchanger (internal coil)
The heat exchanger is the area where the air transfers its heat. When it is clogged:
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efficiency decreases,
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The heat pump works longer.
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The feeling of comfort becomes less stable.
We clean the fins with appropriate products and methods that respect the integrity of the coil. The aim is to remove accumulated dust and film without damaging the fins.
5) Turbine cleaning: the step that really changes the air
The turbine (fan wheel) is often the source:
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odors upon startup,
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noise,
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the sensation of “less cool” air in air conditioning.
We perform a targeted cleaning of the turbine to remove deposits from the blades. This is a more technical step, but it is also the one that transforms the final result: more stable air, smoother operation, reduced odors .
6) Condensate tray, disinfection and odor prevention
The tray collects the water from condensation. Over time, an organic film can form on it. We clean the tray and, where appropriate, apply a suitable disinfectant to limit:
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molds,
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musty smells,
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air system contamination.
7) Drain inspection and cleaning
A partially blocked drain can cause:
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excesses,
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irregular flows,
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persistent humidity in the unit.
We check the path and flow, then clean as needed to ensure smooth drainage.
8) Reassembly, commissioning and checks
After controlled drying/draining, we reassemble:
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filters,
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hood,
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shutter and steering blades.
Next, we turn the device back on and check:
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airflow stability,
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operating noise
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response to trends (heating/ventilation/air conditioning depending on the season),
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absence of droplets or abnormal flow.
Expected results after a professional cleaning
A complete cleaning of a Gree wall-mounted heat pump typically results in:
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A more constant airflow
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Less odor at startup
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A more even heating sensation in winter
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More comfortable air conditioning in summer (less “heavy” air)
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Quieter operation
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Improved air circulation hygiene and enhanced air quality
It's not a "magical" promise, it's mechanical: less obstruction + better heat exchange + cleaner ventilation.
Recommended frequency in Montreal
In practice, for a wall-mounted unit in Greater Montreal:
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Filters: check them regularly (especially during periods of heavy use)
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Thorough cleaning: often recommended once a year , or more often if: pets, heavy kitchen use, high dust levels, allergies, continuous use
In Ville-Marie, given the urban reality (fine particles, traffic, construction work), annual maintenance is often a good minimum.
Why AirGreen for your Gree cleaning in Ville-Marie?
Our approach is tailored for residential customers: we work cleanly, we target the areas that truly influence air quality (turbine, heat exchanger, tray, drain), and we restore the unit to service after verifying its performance. The goal is simple: to get your Gree wall-mounted heat pump working better, smelling better, and maintaining consistent comfort.