Why Is My Aircond Leaking Water?

In Malaysia’s hot and humid weather, air conditioners are used almost every day — especially in homes, condos, offices, and Airbnb units. But one of the most common problems homeowners face is a leaking air conditioner.

If you notice water dripping from your indoor aircond unit, don’t ignore it. A leaking aircond may seem like a small issue at first, but it can lead to water damage, mould growth, unpleasant smells, and even higher repair costs if left untreated.

At Mr Problem, we frequently receive service calls related to aircond water leakage around Klang Valley. Here are some of the most common reasons why your aircond is leaking water — and what you should do about it.

1. Clogged Drainage Pipe

One of the most common causes of aircond leaking water is a blocked drainage pipe.

Over time, dust, dirt, algae, and slime can build up inside the drain pipe, causing water to backflow and leak from the indoor unit.

Signs:

• Water dripping from indoor unit
• Bad smell from aircond
• Water stains on wall or ceiling

Solution:

Professional servicing and drainage flushing are usually needed to clear the blockage properly.

2. Dirty Air Filters

When air filters are too dirty, airflow becomes restricted. This can cause the evaporator coil to become too cold and freeze.

When the ice melts, excess water may overflow from the drain pan and start leaking.

Signs:

• Weak airflow
• Aircond not cold
• Ice forming on indoor coil
• Water dripping after usage

Solution:

Regular cleaning and maintenance can prevent this issue. In Malaysia, airconds should generally be serviced every 3–6 months depending on usage.

3. Damaged or Cracked Drain Pan

Older aircond units may have rusted or damaged drain pans.

When the drain pan cracks, water cannot flow properly into the drainage system and may start dripping directly from the unit.

Signs:

• Continuous leaking
• Visible rust or corrosion
• Older aircond system

Solution:

The drain pan may need repair or replacement.

4. Improper Aircond Installation

Incorrect installation angle or poor piping setup can also cause leaking problems.

If the indoor unit is not installed at the correct tilt angle, water may not flow smoothly into the drainage pipe.

Signs:

• New aircond leaking shortly after installation
• Water leaking only during heavy usage
• Uneven indoor unit positioning

Solution:

A professional technician should inspect and adjust the installation.

5. Low Gas Level or Cooling Problems

Low refrigerant gas can reduce pressure in the system, causing the evaporator coil to freeze.

When the ice melts, excess water leakage may occur.

Signs:

• Aircond not cold
• Ice on piping or indoor unit
• Higher electricity bill
• Water dripping

Solution:

A proper diagnosis is important. Simply topping up gas without checking for leaks is not recommended.

Can I Still Use My Aircond If It’s Leaking?

It is not advisable to continue using a leaking aircond for long periods.

Ignoring the issue may lead to:

• ceiling or wall damage
• mould growth
• electrical risks
• compressor damage
• more expensive repair costs later

The earlier the problem is inspected, the easier and cheaper it usually is to fix.

How to Prevent Aircond Water Leakage

Here are some simple maintenance tips:

✔ Service your aircond regularly

Regular servicing helps prevent dust buildup and drainage blockage.

✔ Clean filters monthly

Basic filter cleaning improves airflow and cooling performance.

✔ Do not ignore weak cooling

Weak cooling may indicate early system problems.

✔ Check for unusual smell or sounds

These may be signs of drainage or internal issues.

✔ Use professional technicians

Proper diagnosis helps avoid repeated leaking problems.

Professional Aircond Service in Klang Valley

At Mr Problem, our in-house team provides:

• Aircond servicing
• Chemical cleaning
• Water leakage troubleshooting
• Gas checking
• Drainage flushing
• Aircond installation
• Ceiling cassette & VRV servicing

Why customers choose us:

• In-house technicians (no outsourcing)
• Transparent pricing
• Fast response
• Workmanship warranty
• Rated 4.8 stars on Google
• Served more than 3,800 clients across Klang Valley

If your aircond is leaking water, our team is ready to help inspect and solve the issue professionally.

Need Help?

Visit: Mr Problem Aircond Services

Or contact our team for inspection and servicing today.