Why does my aircon leak water only sometimes?

Intermittent leaks are often linked to humidity levels or partial blockages that only overflow once condensate builds up past a certain point.

Is a leaking aircon linked to needing a chemical wash?

It can be. A dirty coil or filter contributes to icing and drainage issues, so some contractors recommend a wash alongside the drain repair.

Can a leak damage my ceiling or walls?

Yes, prolonged leaks can stain or damage plaster and paint, so it's worth fixing as soon as dripping starts rather than waiting.

Aircon water leaking indoors: drainage and pipe repair

Water dripping from the indoor unit onto the floor, ceiling stains, or a slow drip near the wall are among the most common aircon complaints in Malaysian homes, usually from a clogged condensate drain pipe, a choked drain pump, or ice forming on the coil due to low gas or a dirty filter. This is a specific enough problem that many buyers search for it directly rather than as general servicing.

The fix depends on the cause: clearing the drain pipe or pump, resealing a loose drain hose connection, cleaning a dirty filter or coil that's causing ice buildup, or in some cases correcting a badly sloped installation that never drained properly from day one.

Common triggers: blocked condensate pipe, dirty filter causing icing, drain pump failure, poor installation slope
Includes checking for ceiling or wall damage caused by ongoing leaks
Different job scope from chemical wash, though a dirty coil can be the root cause

What it costs

Cost depends on whether it's a simple drain unclog versus a drain pump replacement or correcting the unit's mounting slope, which involves more labour. Leaks caught early are cheaper to fix than ones that have caused ceiling or wall damage.

Top 3 by our score

Ranked from our published scoring of public Google reviews for aircon repair.

1. BioHydro (M) Sdn Bhd - Aircond Service (Chemical free)
5.0★ · 413 reviews

94
2. Jaya Maju Aircond Electrical & Plumbing Services
5.0★ · 1152 reviews

94
3. Aircon Anda
5.0★ · 207 reviews

94

Browse all providers

FAQ

Why does my aircon leak water only sometimes?: Intermittent leaks are often linked to humidity levels or partial blockages that only overflow once condensate builds up past a certain point.
Is a leaking aircon linked to needing a chemical wash?: It can be. A dirty coil or filter contributes to icing and drainage issues, so some contractors recommend a wash alongside the drain repair.
Can a leak damage my ceiling or walls?: Yes, prolonged leaks can stain or damage plaster and paint, so it's worth fixing as soon as dripping starts rather than waiting.

When you submit a quote or contact form on this site, your inquiry may be sent to one or more partner providers. We may receive a referral fee, but our rankings and scores are determined by our published methodology and are never affected by referral fees.