Fix your aircon problem yourself -- or find someone who can

Aircon running but the room's still warm? A dirty filter is usually the culprit. Try these fixes before calling anyone.

Water dripping from the indoor unit onto your floor or wall. Usually a blocked drain pipe -- here's how to check and clear it.

Buzzing, rattling, whistling, or grinding? Each sound points to a different issue. Some are easy fixes, others need a technician.

Musty, sour, or vinegar smell when the aircon kicks in? Almost always mould or bacteria growing inside the unit. Fixable.

Aircon turns on for a few minutes, shuts off, then starts again. This on-off cycling wastes electricity and wears out the compressor.

Aircon keeps tripping the breaker or shutting itself off. Don't just keep flipping the switch -- find out why.

Frost or ice on the copper pipes or indoor unit. Usually means blocked airflow or low gas -- sometimes both.

Remote stopped responding? Usually dead batteries. But if that's not it, here's what else to check.