How to Fix Aircon Leaking Water – 5 Simple Solutions

Are you experiencing water dripping from your aircon unit? Air conditioners can sometimes develop a leak due to weather, wear and tear or grime buildup. Luckily, there are a few simple solutions to help fix this problem. Read on to find out how to quickly and effectively identify the cause of the leak and get it fixed in no time!

What Are The Common Causes Of Aircon Leaking Water?

Common causes of aircon leakage include low outside temperature, clogged air filters, broken condenser pumps, defective units and frozen coils.

Temperature Outside Is Too Low

Temperature plays an important role in aircon functioning. When it gets too cold outside, water condensation can occur inside the unit which will eventually result in leaking water from your air conditioner. If you notice that your aircon is leaking when the temperature outside drops below a certain point, then this could be the cause of your problem.

You should check if there are any obstructions near your outdoor unit like leaves or debris blocking and preventing proper airflow. Make sure that the surroundings of your outdoor unit remain clean and free from blockages to ensure optimal performance of your AC unit.

To prevent aircon leaking due to low temperatures outside, try to insulate pipes or electric cords connecting indoor and outdoor units by wrapping them with insulation foam tubing for better efficiency and protection against cold climates.

Clogged Air Filter

A clogged or dirty air filter can cause an aircon to leak due to a lack of airflow. When the filter is blocked, it restricts the circulation of cold air and leads to water accumulation in the unit. To avoid this issue, filters should be regularly checked and replaced every few months.

If not changed on time, dust particles can accumulate quickly which blocks chilled air from entering the outdoor unit and stops proper drainage causing a leaking issue. Replace your old filter with a new one for better circulation and fewer leaks from your AC system.

Broken Condenser Pump

One of the most common causes of an aircon leaking water is a broken condenser pump. The condenser pumps are responsible for regulating the flow of cooled refrigerant through the system and preventing any water from forming inside the unit. A broken or malfunctioning pump can cause mild to severe leakage issues as it reduces the pressure built up in the pipes, resulting in excess liquid formation.

To restore the proper functioning of this component, it’s important to replace or repair it with one that meets optimal specifications as recommended by its manufacturer. This will ensure that your aircon runs smoothly and keeps any further damages at bay while also avoiding any additional costs incurred due to frequent repairs and replacements.

Defective Unit

One of the most common causes of aircon leaking water is a defective unit. A faulty unit can be due to poor installation or incorrect maintenance, resulting in cracks and leaks that affect its performance. Therefore, it is important to ensure that your air conditioner is properly installed and regularly maintained by qualified professionals.

In the case of a defective unit, the best solution would be to replace the entire system with a new one as this will eliminate any further problems with leakage or breakdowns. Regular servicing should also be done to prevent any future issues with your air-conditioning system as this will save you money in repairs over time.

Frozen Coils

Frozen coils are one of the most common causes of aircon leaking water. Coils become frozen when there is insufficient airflow or temperature and humidity levels that are too high. This restricts the heat exchange process and can cause condensation to build up, which leads to water leakage from the system.

In order to avoid this problem, you should ensure proper and steady airflow in your room as well as monitor temperature and humidity levels inside your home. Additionally, it is important to keep an eye on any ice build-up around the coils so that it can be prevented before it escalates further.

Troubleshooting Tips For Aircon Leaking

Inspect the air filter, drain pipe, pump and unit for potential issues.

Clean Or Replace Air Filter

A dirty air filter is one of the main reasons for an aircon leaking water. Regularly checking and cleaning your air conditioner’s filters is a good preventive measure to ensure it works efficiently and prevents water from dripping inside. To clean, simply open the front panel and use a brush or vacuum cleaner to remove dust particles that have accumulated on the filter. If you notice any damage or discolouration, replace it with a new one immediately.

Air filters should be replaced every six months if they are not kept clean. When replacing, make sure you purchase the same size as your old ones so it fits securely in place to avoid any unnecessary leakage issues. Additionally, check regularly that all screws are tightened as loose screws can cause leaks in some cases too!

Check Blockages In the Drain Pipe

A common cause of aircon leaking water is a blockage in the drain pipe. To fix this problem, you’ll need to locate and clear any excess dirt or debris that could be clogging it. You can also use a vacuum cleaner and an appropriate cleaning solution to ensure there are no obstructions present.

It’s important to regularly inspect the drainage system of your air-conditioner for build-up as this will go a long way towards preventing future leakages. If any blockages persist after using the methods above, then professional repair services may be necessary to get your unit working correctly again.

Inspect For Malfunctioning Pump

One of the main reasons for the aircon leaking water is a malfunctioning condenser pump. A properly functioning condenser pump helps to move water away from the unit, and when it malfunctions, water will start to leak out.

To inspect for a malfunctioning condenser pump, first, switch off the power at the mains and then carefully remove any covers or panels that are protecting it. Check that all connections are intact and that nothing appears broken or damaged.

Also, check if there is any blockage in its drain pipe. You might need help from an expert technician to do this task safely.

Inspect For Unit Damage

It is important to check for any physical damage around the aircon unit itself. In many cases, a leak may be caused by cracks or holes in the casing. If there are signs of visible wear and tear, it’s best to call a professional technician right away to repair or replace the damaged parts of the unit. Make sure to also inspect all internal components such as piping and wiring for rust or other potential defects which can lead to water leakage.

In addition, leakages could be due to faulty seals or gaskets that are no longer able to prevent outside air from entering the system. This causes condensation which leads to an accumulation of moisture internally and thus leads to water dripping out of your air conditioner. Regularly replacing these fixtures will help ensure optimal performance and efficiency from your AC system whilst preventing further leaks in future.

Check For Excess Ice And Frost

Checking for any build-up of ice and frost on the air conditioner’s interior is a necessary step when troubleshooting an aircon leaking water. If too much ice accumulates inside, it can block the natural drainage process resulting in water leakage from the system. To remove existing ice and frost, turn off your AC unit and use a hairdryer or cloth to gently thaw it away.

Frost can also accumulate if there is low refrigerant flow within the system due to a clogged filter or blocked evaporator coils. It is important to check for any signs of excess frost accumulation regularly and take preventive actions like cleaning your filter as soon as possible to avoid further damage.

How To Fix An Aircon Leaking Water

Tackle the issue by clearing the drain pipe, replacing the condenser pump, repairing or replacing the unit, monitoring temperature and humidity levels, and insulating aircon pipes and drains.

Clear The Drain Pipe

Clearing the drain pipe is one of the most effective solutions to aircon leaking. To do this, you need to check if there’s any blockage or clogging in it and remove it by removing the caps at each end of the pipe. Make sure that no dirt or debris is left behind and clean away any visible dirt from around the pipe.

If you’re unsure how to locate and access your aircon unit drainpipe, consult a professional technician for help. It is important not to try clearing the drainpipe yourself without proper instruction as doing so may cause damage to your unit. After clearing out any blockages, check if water can flow freely through the pipe before reinstalling it back to its original position in order to ensure its correct functioning.

Replace The Condenser Pump

Pumping fluids is an essential task of a condenser pump and any malfunction can cause water to leak from your aircon unit. It’s highly recommended to check the pump for any damage or blockages and replace it if necessary. This will help ensure that the fluid inside your aircon unit stays at optimal levels, eliminating possible future leaks.

When replacing the condenser pump, make sure you use one with the correct specifications so that it’s compatible with your air conditioner model. You should also take necessary precautions before attempting this replacement as pumps may contain hazardous fluids such as refrigerant gas or coolants. Once done correctly, you won’t have to worry about leaking anymore!

Repair Or Replace The Unit

If your aircon is leaking water, you may need to repair or replace the unit itself. The best way to determine if this is necessary is to inspect the system for any visible signs of damage. If you find that a component has broken down and cannot be fixed, it’s probably time to consider replacing the entire unit. Fortunately, many aircon repairs can be carried out by qualified technicians without having to incur the cost of an entirely new setup.

Another option when repairing an aircon unit would be to perform some basic maintenance work such as cleaning coils and filters, checking for loose connections or worn-out parts, and making sure all components are working properly before replacing anything else on the system. With regular maintenance checks, you may be able to prevent further damage from occurring and avoid costly repair costs in future.

Monitor Temperature And Humidity Levels

It is important to keep an eye on the temperature and humidity levels in a room where an aircon is installed. The ideal combination of temperature and humidity inside should be kept at between 25°C – 28°C, with relative humidity set below 65%.

Having too much or too little moisture in the air can cause condensation on the coils and inside the unit making it prone to leaks. If temperatures fall outside this range, adjust your thermostat as necessary for optimal operation.

Insulate Aircon Pipes And Drains

Insulating your aircon pipes can help prevent condensation from forming and leaking out of the unit. To do this, wrap foam insulation around all exposed pipes to keep them at a constant temperature. This will also reduce energy consumption by helping maintain an ideal room temperature.

To further reduce leakage and water damage, you should check for any blockages in the drains. Clear these using vinegar or baking soda and ensure they are not clogged before running your aircon system again. Properly insulated pipes with unclogged drains will lower the risk of leaks due to excess moisture build-up inside the unit.


In conclusion, the most effective way to fix an aircon unit from leaking water is to troubleshoot and identify the root cause of the issue. With a few simple yet critical steps such as cleaning or replacing air filters, checking for blockages in drain pipes, inspecting for malfunctioning pumps or defective units and monitoring temperature and humidity levels, you can solve this problem with ease.

Remember to insulate your aircon piping and drainage system at all times so that it remains free from any leakage.

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