What Should You Do About a Frozen Evaporator Coil?

Frozen evaporator coils can prevent your AC system from evocatively doing its job, leaving you hot and bothered.

Below we’ll discuss a few ways to troubleshoot the problem. Remember, some things are best left to the professionals, and we’d be happy to help you get your system running like new again in no time.

Potential Causes of the Freeze Up

As the evaporator coil absorbs heat from the surrounding air, causing it to cool, moisture from that air condenses on the coil itself. Although most of this moisture drips into the catch pan, some may begin to freeze on the coil itself, accumulating and encrusting it in ice. Airflow blockages or reduction can also exacerbate the issue.

Nothing is Better Than Time

We all want a fast resolution, but simple shutting the system off and allowing the coils to unthaw on its own might be your best option. Although you can speed up this effort with a hairdryer, be careful to not overheat the coils. And do NOT try to chip away the ice as this can damage the coils and potentially leak harmful coolant into your home.

Assess the Airflow

Start with your filters and make sure they are fresh, clean and free from debris and dust. Check for build-up and debris around the coils themselves.

Inspect for Physical Damage

Look for signs of visual wear or damage. Dents, bending, corrosion, and/or loose fittings can all be a problem best assessed and repaired by a qualified HVAC technician.