Why Is Water Leaking from My Aircon Even After Servicing?

It can be frustrating to find water leaking from your air conditioner even after it has been recently serviced. While routine aircon servicing is supposed to prevent such issues, leaks can still occur due to several underlying causes. Understanding the potential reasons behind a leaking aircon will help you address the problem more effectively and avoid further damage to your home or the unit itself.

HDB/BTO Aircon ServiceCondo Aircon ServiceCommercial Aircon Service1. Clogged or Damaged Drain Pipe

Even after servicing, the drain pipe may still be partially clogged or damaged. The drain pipe is responsible for removing condensed water from the unit. If it's blocked by dirt, mold, or algae, water has nowhere to go and may back up into the Daikin Aircon unit, eventually dripping out into your room.

In some cases, the servicing might have cleared only the visible or accessible parts of the pipe, leaving blockages deeper in the line. Additionally, a cracked or disconnected drain pipe can also lead to leaks, as water escapes before reaching the outlet.

2. Improper Installation or Leveling

If your aircon isn’t installed correctly, water may not drain efficiently. The indoor unit needs to be level, or slightly tilted toward the drainage side, to allow gravity to assist in removing water. Even a small misalignment can cause water to accumulate inside the unit and eventually leak.

Sometimes, AC servicing involves removing the Aircon chemical wash and reattaching panels or components. If the technician failed to realign the system properly afterward, it could result in drainage problems.

3. Full or Malfunctioning Drain Pan

The drain pan is meant to collect the condensation from the evaporator coil before it's funneled out through the drain line. If this pan is rusted, cracked, or full of debris, it won’t function as intended. A technician might overlook the Aircon chemical wash subtle cracks or corrosion during a quick servicing job, leading to leakage afterward.

Also, in older units, the drain pan might not be easily visible or accessible, making it more likely to be missed during standard maintenance.

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4. Dirty or Frozen Evaporator Coils

If your evaporator coils are dirty or if airflow is restricted, the coils can freeze. When the ice eventually melts, it creates more water than the drain system can handle, leading to leaks.

This situation might not be immediately aircon trunking evident during servicing. If the technician didn't fully inspect or clean the coils, or if the filters were not replaced or cleaned properly, it could cause freezing issues shortly after the AC servicing is done.

5. Low Refrigerant Levels

Low refrigerant levels reduce the pressure in the system, which can also lead to freezing of the evaporator coils. As with dirty coils, the ice buildup can melt and overwhelm the drainage system.

While checking refrigerant levels is part of a comprehensive Aircon General service, some technicians might skip it during a basic maintenance visit. Also, slow leaks in the refrigerant lines may not be detected during a quick inspection, causing ongoing problems even after an AC service.

6. High Humidity or Environmental Factors

In areas with high humidity, AC produces more condensation than usual. If the system isn't designed to handle this volume, Aircon gas topup, or if the drainage is slightly impaired, even a small backlog can lead to leakage.

If your aircon is in a poorly ventilated area, or if the servicing didn’t account for environmental changes (like a blocked outdoor drain or excessive dust), this can lead to post-servicing leaks.

Conclusion

Water leakage from an AC after servicing is not only annoying but can also signal deeper issues that need attention. The most common aircon repair causes include clogged drains, faulty installation, full or damaged drain pans, dirty or frozen coils, and low refrigerant levels. Additionally, environmental factors like humidity or improper airflow can contribute to the problem.

To resolve persistent leaks, it’s important to consult a qualified technician who can conduct a thorough inspection beyond basic servicing. Ensure they check all components, including the drainage system, refrigerant levels, and coil condition. Regular maintenance, when done properly, should prevent leaks and keep your aircon running efficiently and safely.

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