Your air conditioner is considered to keep you cool, do not leave the puddle on the floor. If you have seen water leaks from your air conditioner, you are not alone – it is one of the most common AC problems in humid climate like Malaysia. But why does this happen and how can you fix it? Let’s break the reasons behind Aircon leaking water, practical solutions and a professional.
1. Clogged Drain Pipe
A blocked drain pipe is responsible for water leaking inside AC units in 80% of cases. Here’s why:
Why It Happens: Over time in cleaning, algae, dust, and mold build up in the drain line, preventing condensation from flowing out.
Signs: Water dripping from the indoor unit, musty smells, or gurgling noises.
How to Fix:
- Turn off the AC.
- Use a wet/dry vacuum to suck out the clog from the drain pipe’s outdoor end.
- Pour a mix of warm water and vinegar into the pipe to dissolve algae.
Pro Tip: Prevent future clogs by scheduling annual Aircond Service (link to your service page).
2. Dirty Air Filters
When the filters are closed, AC cannot absorb the heat properly. This causes the evaporator to freeze the coil. When it melts, drip water from the air conditioner.
Signs: Reduced cooling, ice on coils, or water pooling under the indoor unit.
How to Fix:
- Turn off the AC.
- Clean or replace filters (every 1–2 months in humid climates).
- Let ice melt completely before restarting.
“For model-specific troubleshooting, check your unit’s manual or Daikin Malaysia’s support page.”
3. Low Refrigerant Levels
Refrigerant doesn’t just cool air—it also regulates coil temperature. Low levels cause coils to freeze and thaw, leading to AC unit leaking water.
Signs: Hissing noises, warm air, and ice on coils.
How to Fix:
- Call a pro immediately. Refrigerant handling requires licenses and tools.
- Never DIY—this is illegal and dangerous.
4. Broken Condensate Pump (For Central ACs)
Homes with central air conditioning rely on a condensate pump to move water outside. If it fails, you’ll see water leaking inside the AC unit.
Signs: Water pooling around the indoor unit, humming noises from the pump.
How to Fix:
- Check if the pump is plugged in.
- Clean the pump’s reservoir.
- Replace the pump if it’s broken (costs RM200–500).
5. Improper Installation
If your AC wasn’t installed level, condensation can’t drain properly, causing aircon dripping water indoors.
Signs: Water leaks only from one side of the unit.
How to Fix:
- Use a spirit level to check the unit’s tilt.
- Adjust the mounting bracket so the unit tilts slightly outward (for drainage).
6. Cracked Drain Pan
Older units (8+ years) often have rusty or cracked drain pans. This leads to water leaking from aircon onto your walls or floor.
Signs: Rust stains, visible cracks, or persistent leaks after cleaning.
How to Fix:
- Replace the drain pan (RM150–300 for parts + labor).
7. High Humidity Overloading the System
Malaysia’s humidity makes ACs work harder. On extremely muggy days, even a well-maintained unit might drip water temporarily.
Signs: Occasional aircon unit leaking water during rainy seasons.
How to Fix:
- Set the thermostat to 23–24°C (lower settings worsen condensation).
- Use a dehumidifier alongside your AC.
How to Prevent Aircon Leaks
Stop water leaks in aircon before they start:
- Clean Filters Monthly: Use water or a vacuum.
- Schedule Annual Servicing: Pros clean drain lines and check refrigerant.
- Check Outdoor Unit: Ensure the drain pipe isn’t blocked by plants or debris.
- Upgrade Old Units: ACs older than 10 years are prone to leaks.
When to Call a Professional
DIY fixes work for minor issues, but call an expert if:
- Water is leaking inside AC unit electrical components.
- You smell mold or burning.
- The AC blows warm air.
- Leaks return after cleaning.
For reliable help, book a professional aircon service or find air conditioner repair service near me.
FAQs: Aircon Leaking Water
Is it safe to use my AC if it’s leaking water?
Turn it off immediately. Water near electrical parts can cause shorts or mold.
Can a leaking AC damage my home?
Yes! Water stains walls, warps floors, and promotes mold growth.
Why is my new AC leaking water?
Likely improper installation. Contact the aircon installer for adjustments.
How much does leak repair cost?
RM80–300 for clogs; RM500+ for refrigerant or drain pan fixes.
Why is there water under my outdoor AC unit?
Normal condensation. But water dripping from the air conditioner indoors is a problem.
Final Thoughts
Aircon leaking water is usually fixable, but ignoring it risks costly damage. Start with simple fixes like cleaning filters or drain pipes. For persistent leaks or refrigerant issues, trust licensed technicians to keep your home cool and dry.
Still stuck with a dripping AC? Contact emergency aircon service in Selangor or trusted technicians in Petaling Jaya for fast help!
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