Aircon Water Leakage: Causes and Solutions

Aircon Water Leakage: Causes and Solutions

Water leakage from an air conditioning unit is a common yet frustrating issue for many homeowners and businesses in Singapore. While it may seem minor at first, ignoring the signs of water leakage can lead to damage to your walls, ceiling, or flooring—not to mention mould growth and reduced aircon efficiency.

In this article, we explore the most common causes of aircon water leakage and how to solve them effectively.

Common Causes of Aircon Water Leakage

1. Clogged or Dirty Drainage Pipe

When the drainage pipe is blocked by dirt, dust, or algae, water cannot flow out properly and starts to back up, eventually leaking from the indoor unit.

Solution:
Regular maintenance and chemical flushing help prevent pipe blockages and ensure smooth drainage.

2. Damaged or Disconnected Drain Line

A cracked, dislodged or poorly installed drainage line can cause water to leak directly from the unit.

Solution:
A professional inspection and repair can fix or replace damaged pipes quickly and prevent further leaks.

3. Dirty Air Filter

A dirty air filter restricts airflow, causing the evaporator coil to freeze. When it melts, the excess water can overflow from the drain pan.

Solution:
Clean or replace your air filters every 1–2 months to keep airflow optimal and prevent freezing issues.

4. Low Refrigerant Levels

Low refrigerant leads to a drop in pressure and causes the evaporator coil to freeze. Just like with dirty filters, melting causes water overflow.

Solution:
Schedule a refrigerant top-up and leak check with a certified technician to restore proper cooling function.

5. Improper Installation

Poor installation of your aircon unit, such as incorrect levelling or pipe setup, can lead to water accumulation and eventual leakage.

Solution:
Always hire certified technicians for aircon installation to ensure it’s done to professional standards.

6. Full or Cracked Drain Pan

Older air conditioning units may have corroded or cracked drain pans, which can’t hold water properly.

Solution:
Replace the damaged drain pan to stop leaks at the source.

How to Prevent Aircon Water Leakage

• Schedule Regular Servicing – Routine maintenance helps identify and fix issues before they become serious.

• Keep Air Filters Clean – A clean filter ensures proper airflow and prevents coil freezing.

• Use Professional Technicians – DIY fixes can make the issue worse. Always choose qualified aircon servicing experts.

• Watch for Warning Signs – If you notice reduced cooling or strange noises, get your unit inspected immediately.

Professional Aircon Leak Repair in Singapore

At Cool & Clean, our technicians are trained to diagnose and resolve all types of aircon issues, including water leakage. We use advanced tools and proven methods to ensure your system operates smoothly, efficiently, and leak-free.