Your HVAC equipment’s evaporator coils are central to the operation of the unit. As you run your air conditioner during the cooling season, dirt and grime build up on the coils. Removing the build-up from the coils is essential for keeping your AC unit well maintained. However, you can take measures to prevent the dirt from building up on the coils in the first place.

What Do Evaporator Coils Do?

Evaporator coils are the heart of your AC system. Evaporator coils extract the heat and moisture from the air when the air from the home passes over the coils. The warm air is deposited outside the home, and the cooled, conditioned air is then circulated throughout the home.

The Importance of Filters

One of the most important maintenance tasks you can perform for your HVAC unit is to change the filters on a regular basis. Accurate Comfort Services recommends that you change filters every 30 days, particularly during the cooling season. If you have a reusable filter, clean the filter at least every four weeks.

You can also reduce the contaminants that reach the evaporator coils by switching from a standard filter to a pleated media filter. Though media filters are a bit more costly than standard supermarket filters, media filters trap more airborne contaminants, preventing particles from reaching the coils.

How to Clean Evaporator Coils – DIY

The task of cleaning a system’s evaporator coils can be accomplished by the handy homeowner with a few tools, a wire brush and some special coil cleaning spray solution. You can get the cleaning solution from your HVAC supplier or home improvement store.

First, turn off the AC unit at the thermostat. Carefully remove the metal tape covering the seams of the evaporator access panel on the air handler. Remove the screws under the tape, then lift off the access panel. Visually examine the coils for dirt, dust and debris. If you suspect or see any signs of mold, call a professional right away. HVAC technicians have access to professional tools and cleansers to remove mold.

Next, spray the coil cleaning solution on the coils and follow the product instructions. Generally, you will spray the solution on the coils, then wait several minutes for the cleanser to foam and remove the grime. Follow the instructions to remove the solution. Repeat, if necessary. Re-attach the access panel and reapply the metal tape on the air handler. The coils are ready for another cooling season.

Professional AC Maintenance

For extremely dirty coils, or if you suspect the presence of mold in the lines, professional AC mainteance service is recommended. Accurate Comfort certified HVAC technicians use specialized trade techniques to clean stubborn dirt from evaporator coils while performing your annual tune-up to get your HVAC system ready for the summer months. Call Accurate Comfort to schedule your annual HVAC maintenance.