Troubleshooting
Why Air Conditioners Leak: Drainage Build-Up Is Often the Culprit
Water dripping from an indoor unit does not always mean the unit has failed; residue in the drainage system is another common cause.
Why does an air conditioner produce water?
An AC removes some moisture from the air. That moisture condenses into water, flows into a drain pan and leaves through the drain pipe. When drainage is restricted, water may overflow from the indoor unit.
Dust, moisture and everyday residue can combine into a sticky build-up, sometimes referred to locally as “chaan”.
What should you do when water is dripping?
Switch the unit off first so water does not continue onto walls, flooring or electrical appliances. You can check whether the filter is heavily soiled, but do not dismantle the casing or reach into pipework yourself.
During a professional clean, the technician checks the drain pan and drainage condition and responds to what is found. If leaks keep returning, arranging an inspection early is safer.
How to spot drainage issues early
When the unit is running, occasionally check around the indoor unit for water marks, odour or unusual noises. If damp marks appear on the wall, or dripping continues after shut-off, do not rely on towels alone and delay the cause.
Filter cleaning reduces surface dust, but the drain pan and internal areas need dismantling and should be checked by a suitable professional. Finding the cause earlier helps prevent damage to finishes and nearby appliances.