5 Possible Reasons for Aircon Water Leakage

March 23, 2017
5 Possible Reasons for Aircon Water Leakage

This morning we received a phone call from a customer asking how she could stop her aircon from leaking water. She couldn't find out the reason for her aircon water leakage. Although the question is seemingly simple, there is no one solution to it.  The dehumidifying process of the air conditioner causes some condensation, but pooling or leaking water is an issue of concern.

What causes aircon water leakage?

Let us highlight the five possible reasons for aircon water leakage:

Clogged drain line

After years of continual usage, aircon drain line is bound to get clogged by dirt, mold, dust or sludge thwarting free flow of water.  In this case, you need to unclog it. There are different DIY unclogging methods but we recommend you hire a professional aircon technician who will use a special vacuum to clear the unwanted material out.

Improper Installation

One of most common reasons for water leakage but often overlooked is improper installation of aircon units. If the unit is not level, or there is too much pressure due to closed vents in the house, water may begin to pool. A professional technician can easily identify it even before investigating other possible reasons

Low Refrigerant

The gas (refrigerant) in the aircon may have leaked due to unsealed leaking areas in the unit. Low refrigerant will lower pressure in the system causing the evaporator coil to freeze over. When the coil melts, water flows over the drain pan. In this case, you need to seal the leaking areas before topping up gas. Topping up gas is expensive and is not required often unless more than 50% of it has leaked out

Dirty air filter

Another common reason for aircon units leaking water is dirty air filter. As you imagined, dirty air filter blocks air flow over the evaporator coil turning the coil cold and freeze over time. When the coil melts, water starts flowing over the drain pan. We recommend you change the filter every quarter of the year

Broken Pump

If the condenser pump is broken, your aircon unit will not pump the excess water out. Check if the power of the pump is sufficient by pouring water into it. If it is, check for motor or condenser failure. A professional aircon technician can help you determine the source of the problem.

Download the Sendhelper app to book a professional aircon service provider for general servicing, annual maintenance, chemical wash, and/or topping up refrigerant.

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