Why Is My Aircon Leaking Water and How to Fix It?

As the scorching summer heat sets in, we rely on our air conditioning units to keep us cool and comfortable. However, it can be alarming to discover that your aircon leaks water. This issue can lead to water damage in your home, but it may also indicate a more significant problem with your air conditioning system.

This article will explain how to identify the reasons behind this issue and the steps to fix it. Understanding the causes and solutions ensures your air conditioning unit functions optimally and avoids further complications.

If you’re using a Daikin air cond, consider seeking a professional Daikin air conditioning service to address the issue effectively.

What are the Reasons Behind the Aircon Leaking Water?

Image Credit: Forbes

If your air conditioner leaks water, there could be several reasons. Here’s why your aircon might be leaking water:

Reason 1: Clogged Condensate Drain Line

A blocked condensate drain line is a prevalent issue that contributes to aircon leaking water from the front of the aircond. Dirt and debris obstruct the drain line, causing condensation to return to the unit. Manually unclogging the condensate drain line is necessary to resolve this problem.

Reason 2: Full Drain Pan

The primary cause of air conditioning system leakage is a full drain pan. When the air conditioner cools the warm air, condensation accumulates in the drain pan. In humid conditions, increased condensation may exceed the pan’s capacity, leading to overflow and water leakage from the AC unit.

Reason 3: Refrigerant Leak

In some cases, the substance leaking from your AC may not be water but refrigerant. If you observe a bubbling noise accompanied by a small leak, it’s highly likely that you’re experiencing a refrigerant leak. Contacting the experts for an air conditioning repair service immediately is crucial, as exposure to refrigerants can irritate the skin and lungs.

Reason 4: Air Leakage

Water leaks may result from air leakage, where warm air fails to pass through the air conditioning unit’s vent. Consequently, moisture condenses on the refrigerant coils, seeping water from the unit.

Reason 5: Dirty Air Filter

Dirty air filters can lead to various AC problems, including water leakage. A clogged filter can cause the unit to freeze, resulting in water leaks as the ice thaws. Dust accumulation on the filter can contribute to drain line clogs, causing water to go back into the AC unit.

Reason 6: Frozen Evaporator Coil

Aircon leaking water can be caused by a filthy evaporator coil, similar to a dirty filter, leading to AC components freezing up. When the unit is turned off, water leakage inside your home, especially after thawing, indicates a frozen AC. 

Reason 7: Faulty External Drainage Pump

A malfunctioning external drainage pump is a common cause of aircon water leaks. This pump, located beneath the cooling coil, removes water from the condenser pan. It may malfunction due to dirt accumulation. If the interior of the condenser pump appears clean, check for any damaged components or power supply interruptions.

Find a solution to fix the aircon not cold issue adequately, and ensure you remain comfortable during hot and humid days in your personal space.

Guide on How to Fix Aircond Water Leaking 

Here’s a step-by-step guide to help you fix air conditioner water leaking issues:

Solution 1: Clogged Condensate Drain Line

To address the aircon leaking water inside, locate the condensate drain line, usually a PVC pipe near the indoor or outdoor unit. Use a wet/dry vacuum to clear clogs, or try a plumbing snake or brush to dislodge obstructions. After removing the blockage, pour warm water and vinegar into the drain line to flush out debris. Test for proper drainage by pouring a small amount of water into the line to ensure it flows freely, indicating the issue is resolved.

Solution 2: Full Drain Pan

Locate the drain pan beneath the indoor unit, typically under the evaporator coil. Remove any standing water from the pan using a sponge or towel. Then, use a wet/dry vacuum to suction out any remaining water. Consider adding an algaecide tablet to prevent future algae growth and clogging once the pan is empty.

Solution 3: Refrigerant Leak

Engage the technicians foran air conditioning repair service to inspect and repair any refrigerant leaks, as handling refrigerant requires specialised equipment and training. It’s important to avoid exposure to leaked refrigerant, as it can pose health risks to you and the environment.

Solution 4: Air Leakage

Inspect the area around the air conditioner’s vent for visible gaps or openings where warm air could enter. Seal gaps or cracks using weatherstripping or caulking to prevent warm air infiltration. Then, check and repair any damaged seals around the air conditioning unit’s window or installation area. Finally, turn the air conditioner back on and monitor for any signs of leakage to ensure the issue is resolved.

Image Credit: PROTECH HVAC Home

Solution 5: Dirty Air Filter

Locate the air filter near the return air duct and remove it from its housing. Clean the air filter by rinsing it gently with lukewarm water and mild detergent, or use a vacuum cleaner with a brush attachment to remove dirt and debris. Allow the filter to dry completely before reinstalling it into the air conditioner.

Solution 6: Frozen Evaporator Coil

Allow the ice to melt naturally or expedite using a hairdryer set on low heat or a fan. Place towels or a bucket underneath the indoor unit to catch water from the melting ice. Once melted, inspect the evaporator coil for dirt and debris, then clean it using a soft brush or coil cleaning solution. Ensure the coil is dry before turning the air conditioner back on.

Solution 7: Faulty 

Locate the condenser pump below the cooling coil or near the condenser pan. Check for visible damage, such as cracks or leaks, and clean it thoroughly if dirty using a soft brush and water. Inspect all components, including the float switch and motor, for signs of malfunction or damage. If the pump is beyond repair, replace it with a new one compatible with it. 

Reconnect power to the air conditioner and turn it on, monitoring for any water leakage and ensuring the condenser pump functions correctly.

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Conclusion

Air conditioner leaks happen due to clogged drains or dirty filters. You can fix them by cleaning parts like the drain lines and filters or replacing damaged components. Regular maintenance helps prevent future leaks. If you’re unsure what to do, getting help from a professional is best. Keeping your AC in good shape prevents leaks and ensures your comfort.

If you think it’s time to change a new air-conditioning unit, feel free to reach out to us for our aircond installation service.