How Do I Prevent My AC System from Overflowing?

In the peak of summers, your A/C unit is conditioned to zap moisture from the humid air inside your San Diego home. The moisture removed from your home gets drained out by your A/C system. However, sometimes you may notice that your A/C system is overflowing; this will require immediate attention to prevent water damage.

Causes for overflowing

Most units will have an A/C overflow drain and an overflow pan. The moisture that is drained from your homes can get clogged in the drain lines. If this happens then you’ll see a constant drip in the overflow drain. Any condensation from your home will finally end up in an overflow pan which may develop a crack and will thus leak. Sometimes your air-filter may also be at fault when not cleaned regularly. Restricted airflow from a blocked filter can cause ice to form in the evaporator coils. When the ice melts, it causes water to drip from your system.

Fix the A/C overflow

If you notice a leak, make sure you inspect the overflow pan. Check for damage or cracks including the edges and the corners. If it’s a very small hole, then they can be fixed with quick drying water-resistant glue. However, since it is not a very expensive part, it is always better to replace a damaged overflow pan.

Prevent an A/C overflow

One of the ways to prevent overflow is to install a wet switch. While most new A/C models come with the wet switch, older models may not have them. A wet switch is usually fixed in the overflow pan which can sense the accumulated water level. When the pan gets filled, the probes detect the water and automatically stop the A/C unit.
When the A/C shuts down, it is an indication that you have to inspect your overflow pan.