Safety Note: These steps cover the indoor unit filter only. Never touch electrical panels, gas lines, compressors, outdoor units, or electronic boards. If you suspect an electrical fault, switch off the circuit breaker and call a licensed technician.
Step-by-Step Guide
- 1
Turn off and unplug the unit
Turn off the AC using the remote control and wait for it to stop completely. For safety, unplug the unit from the wall socket or switch off the relevant circuit breaker.
- 2
Open the front panel
Lift or release the front cover of the indoor unit. The mechanism varies by model — do not force it open.
- 3
Remove the filters
Filters are typically positioned horizontally. Lift slightly and pull forward to remove. If heavy dust is present, cover your face before pulling them out.
- 4
Clean the filters
First remove loose dust with a dry brush or vacuum cleaner. For heavier soiling, wash with lukewarm water and mild detergent. Avoid harsh brushes or chemical cleaners, which may damage the filter mesh.
- 5
Dry the filters completely
Dry in a shaded, ventilated area — not in direct sunlight. Reinstalling a damp filter can promote mould growth inside the indoor unit.
- 6
Reinstall the filters and test
Once fully dry, refit the filters in the same orientation, close the panel, and power on the unit. A faint dust smell in the first few minutes is normal. If you hear unusual sounds or see an error code, contact a licensed technician.
Frequently Asked Questions
How often should I clean the AC filter?
Every 2–3 weeks under normal use. If you have pets or live in a dusty environment, more frequent checks are advisable.
Cooling is still weak after cleaning the filter — what next?
If cleaning the filter does not restore performance, the issue may be low refrigerant pressure, a compressor problem, or another technical fault. A licensed technician should diagnose these — do not attempt repairs yourself.
What if the filter is torn or damaged?
A damaged filter lets dust pass directly into the indoor unit. Purchase a replacement filter matching your model and brand. Your authorized dealer can help identify the correct part.