Why is Your Aircon Leaking Water?
Spotted a damp patch under your wall-mounted unit and wondering what’s going on? Take a breath. It’s usually a simple fix.
Brian started Cool Earth Aircon in 2007, and aircon water leak repair is still one of the jobs we get called out for most around Marine Parade. Most of the time, the cause turns out to be one of these three:
- A choked condensate drain line
- A cracked or tilted drain pan
- Worn pipe insulation
Singapore’s humid air turns to water when it hits the cold coil inside your unit. According to Helpling’s Singapore guide, that water should collect in the drain tray and flow out through the drain pipe. When any part of that route fails, the water ends up on your wall, furniture and floor instead.
Where the water shows up tells you a lot. Helpling’s guide breaks it down like this:
| What you see | Likely cause | Best next step |
|---|---|---|
| Steady drip from the front or bottom of the unit | Blocked drain pipe or full drain tray | Keep the unit off and book a drainage check |
| Water running down the wall behind the unit | Loose drain pipe joint or worn pipe insulation | Have the pipe connections and insulation inspected |
| Water pooling at one end of the unit | Unit not level | Have the unit levelled |
Older blocks at Marine Terrace, Marine Crescent and Marine Drive often have old piping, so leak repairs are common there. EdgeProp’s listings show many flats on these streets were built in 1974 and 1975. That’s over 50 years of dust, sludge and wear working on the drain routes.
Here’s what happens when we visit:
- The technician finds the source of the leak.
- They clear or repair it.
- They test drainage before leaving.
Repairs start from S$60 with a fixed quote, so you know the price before any work begins.
Two quick tips while you wait for us. Switch the unit off and lay a towel under the leak. Skip the basin or bowl, though. The NEA warns that Aedes mosquitoes breed in clean, stagnant water, and a bowl of dripping condensate is exactly that. A basin also hides a leak that needs fixing.
Watch for ice on the coil or weak cooling too. Listing.sg notes that frozen coils can come from a dirty filter, restricted airflow or low refrigerant. In that case, a drain flush alone won’t solve it, and a technician should take a look.
If a leak keeps returning after a drain flush, a chemical wash may be needed to clear sludge from the drain parts. For other faults, see our aircon repair service.
Got two to four units at home? Tell us when you book, and we’ll check every one in the same visit. Message us today for a fixed quote on your aircon water leak repair, and we’ll get that drip stopped.
