Aircon Water Dripping: Read the Pattern Before It's a Puddle

Drips a few minutes after switching on

Early-session drips often mean condensation forming faster than a part-blocked drain can carry away during the unit's hardest-working phase — the initial pull-down of a warm room. The tray fills, spills a little, then keeps up once the room cools and condensation slows. This is textbook partial blockage, the most fixable version: a drain line flush during a $40 general service typically clears it completely.

Drips only during long overnight runs

If daytime bursts stay dry but you wake to a wet patch, the maths is cumulative: hours of condensation eventually overtake a compromised drain, and 3am is when the tray finally overflows. This pattern sits one stage past the first — the blockage is winning whenever runtime is long enough. Same drain-flush fix, but book it this week rather than this month; overnight patterns become continuous ones, and beds have a way of being under bedroom units.

Drips after the unit switches off

A flurry of drips shortly after shutdown, then dry — this one often isn't the drain at all. It can be meltwater from light frost on a coil that's running colder than it should (an airflow or gas question), or condensation on the unit's own cold surfaces finding a path down. Because the suspects here include coil icing, mention this specific pattern when booking: the technician will inspect the coil's condition and check gas pressure rather than only flushing the drain.

Dripping from the piping or trunking, not the unit

Water tracking along the white trunking or from the pipe run means the insulation around the refrigerant pipes has degraded — the cold pipe sweats like an iced drink, and the sweat drips where insulation gaps let it. It fools people because the unit itself behaves perfectly. This is a repair-scope item (re-insulating the affected run) rather than a servicing one: $50 diagnosis, waived if you proceed, with a fixed quote for the re-insulation work.

The cost of acting now versus later

The early drip: usually $40, done during a routine service. The established leak: $40-90, since a fouled coil is often feeding the clog by then ($90 chemical wash clears source and line together). The ignored leak: those numbers plus repainting a water-stained wall or drying out a laminate floor — costs that dwarf the aircon work. Punggol's BTO-era flats are young; a drip caught early keeps them looking it.

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