A deep cleaning for a healthier and more efficient air conditioning system
At AirGreen , we always emphasize the importance of regularly cleaning wall-mounted air conditioners , especially before the arrival of warmer weather. Proper maintenance ensures not only better energy efficiency but also impeccable indoor air quality . This service, performed in Côte-Saint-Luc , perfectly illustrates the impact of a thorough cleaning on the performance of a residential HVAC unit.
Context of the call
The owner of a single-family home contacted us after noticing that his wall-mounted air conditioner was blowing lukewarm air despite being set to the lowest temperature. He also observed a slightly dusty odor and an unusual noise each time it started up. These symptoms clearly indicated a buildup of internal dirt and a lack of maintenance over several years.
Initial diagnosis
Upon our arrival, our technicians observed:
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A thick layer of dust on the front grille.
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Completely clogged filters , reducing airflow.
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The evaporator fins were clogged and covered with a greyish deposit.
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A partially blocked drain , risking water overflow.
This type of fouling not only leads to a loss of cooling power , but also to increased energy consumption and the spread of bacteria and mold in the indoor air.
AirGreen Cleaning Steps
Our specialists carried out a complete and safe cleaning , following a precise protocol:
Step 1 — Power off and protect the area
The device was unplugged and secured before any intervention. We protected the surrounding wall and floor with a waterproof cover to prevent any splashing.
Step 2 — Disassembly and cleaning of the filters
The filters were removed, washed with warm soapy water , then rinsed under high pressure. They were thoroughly dried before being reinstalled.
Step 3 — Internal cleaning of the evaporator
Using a biodegradable and non-corrosive cleaning product , we sprayed the evaporator coils to dissolve dirt and oily residue. A gentle rinse restored the shine and heat exchange capacity of the fins.
Step 4 — Disinfecting and cleaning the fan
The internal fan has been thoroughly dusted and disinfected , eliminating any traces of mold or lingering odor.
Step 5 — Unclogging the condensation drain
The drain was cleared using a specialized vacuum cleaner to ensure smooth water drainage and prevent future leaks.
Step 6 — Complete testing and functional verification
After reassembly, we powered the device back on to perform a performance test :
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Outlet temperature measured at 8°C,
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Noise level reduced by more than 40%,
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Airflow restored to full capacity.
Results and observed benefits
After the intervention, the client immediately noticed:
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A more powerful and quieter air conditioner ,
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Fresher, odor-free indoor air ,
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A significant reduction in energy consumption ,
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And above all, restored thermal comfort throughout the room.
Importance of regular cleaning
At AirGreen, we always remind you that preventative cleaning of a wall-mounted air conditioner should be carried out at least once a year . This extends the lifespan of the unit, prevents costly breakdowns, and contributes to a healthier indoor environment.
Our interventions comply with manufacturers' standards and exclusively use environmentally friendly products adapted to modern HVAC systems.
AirGreen's expertise at your service
Thanks to our team specializing in HVAC system maintenance and cleaning , we respond quickly throughout Montreal, Laval, Longueuil, and on both the North and South Shores . Each cleaning is documented, measured, and validated to guarantee our clients optimal and lasting performance.
Our mission is simple: to restore performance, purify the air and ensure your comfort all year round.