An essential intervention to restore the performance of a dirty device.
At AirGreen , we know that the cleanliness of a wall-mounted air conditioning system directly impacts its performance, indoor air quality, and the lifespan of its components. Recently, our team responded to a call in Mount Royal , where the client had noticed a decrease in cooling capacity and an unpleasant odor when their wall-mounted air conditioner was running.
A visual inspection quickly revealed the cause of the problem: a significant accumulation of dust and micro-debris on the evaporator fins. These deposits formed an insulating film that prevented proper heat exchange and promoted stagnant moisture, conducive to mold growth.
Initial diagnosis and findings
Upon opening the front panel, the filters were covered in a thick layer of grey dust , and the fins of the indoor unit were uniformly soiled . These signs indicated neglected maintenance over several seasons.
The client, concerned about his family's health, told us he wanted a complete and ecological cleaning , without harsh chemicals.
The observed symptoms:
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Weak cooling despite a functioning compressor.
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Slight, persistent musty odor.
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Increased noise coming from the indoor fan.
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Excessive condensation at the level of the drainage tray.
The complete cleaning process
1. Preparation and protection of the work area
Our technicians began by protecting the walls and floor with a waterproof tarpaulin, before unplugging the device to ensure a safe intervention.
2. Removal of the filters and the front cover
The filters were carefully removed and then washed in warm water with a mild, biodegradable soap. Meanwhile, we removed the front cover to access the evaporator coil and the tangential fan .
3. Evaporator cleaning
Using a cleaner specifically designed for HVAC systems , with no harmful fumes, the aluminum fins were sprayed and then rinsed under gentle pressure . This step removes dust, grease deposits, and the beginnings of mold, while restoring thermal conductivity .
4. Degreasing and disinfecting the fan
The indoor fan, often overlooked during cursory cleanings, was removed and disinfected using an antibacterial product made with natural agents. This step is crucial to prevent the spread of spores or unpleasant odors.
5. Condensation drain check
A partially blocked drain was steam-cleaned to restore normal flow. This issue is often responsible for water leaks on the walls or excessive humidity inside the unit.
End result: efficiency and purified air
After complete drying and reassembly, the wall-mounted air conditioner was tested at different fan speeds. Immediate results:
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Fresher air and perfectly odor-free .
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Reduced fan noise.
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Temperature reached more quickly.
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Reduced energy consumption thanks to improved air circulation.
The client immediately felt an improvement in ambient comfort , and our team recommended annual preventative maintenance to maintain this performance.
Why entrust the maintenance to AirGreen?
At AirGreen , every HVAC cleaning is carried out according to a rigorous protocol, respecting the manufacturers' recommendations.
We use:
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Environmentally friendly, non-corrosive products .
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Specialized tools adapted to each type of unit (controlled pressure jets, soft brushes, HEPA vacuums).
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RBQ certified technicians trained to work on all models, whether heat pumps, wall-mounted air conditioners or central systems.
By choosing our cleaning service in Mount Royal, the client extends the life of their appliance and improves the quality of the air they breathe daily.
AirGreen Air Conditioning & Heating — Specialists in cleaning, maintenance and energy performance of HVAC systems in Montreal, Laval, Longueuil, North Shore and South Shore .