A leaking aircon is one of the most common problems homeowners in Singapore face. Water dripping from your unit may look harmless at first, but if left unchecked, it can lead to water damage, mold growth, and costly repairs. The good news is that most aircon leaks are preventable once you know the causes. Let’s look at why your aircon is leaking water and how you can fix it.

Common Causes of Aircon Leaks
1. Clogged Drainage Pipe
Over time, dust and dirt can clog the drainpipe, causing water to back up and leak inside your home. This is one of the top reasons for aircon leaks in Singapore’s humid climate.
Solution: A simple drainpipe cleaning during aircon servicing Singapore usually clears the blockage.
2. Dirty Air Filters
When filters are clogged, airflow is blocked. This makes the evaporator coil freeze, and when it melts, excess water drips out of the unit.
Solution: Wash your filters every 2–3 weeks. Regular aircon cleaning services in Singapore can also prevent this.
3. Faulty or Rusted Drain Pan
The drain pan collects condensation. If it’s cracked or rusted, water escapes.
Solution: Replacing the drain pan is the best long-term fix.
4. Low Refrigerant Gas
When gas levels drop, the coils get too cold and ice forms. As it melts, it causes leaks.
Solution: An aircon gas top-up in Singapore can fix the issue, but if leaks are frequent, you may need a repair.
5. Improper Installation
If your aircon was not installed at the right angle, water may flow back into the unit instead of draining outside.
Solution: A professional aircon repair Singapore service can correct the installation.
How to Prevent Aircon Leaks
Clean air filters regularly.
Book aircon servicing every 3 to 4 months.
Get a chemical wash in Singapore if your unit has heavy dirt or mold buildup.
Call a technician at the first sign of leaks to prevent bigger problems.
A leaky aircon should never be ignored. While cleaning filters and checking drainage pipes may solve minor issues, bigger problems like low gas, faulty parts, or poor installation require expert care.
At Lion City Air Conditioner Services, we provide professional aircon servicing, chemical washes, and leak repairs across Singapore. Our team ensures your aircon stays cool, efficient, and leak-free.
📞 Call us today at +65 8818 5781 or book online at lioncityaircon.sg.