Air Conditioning Evaporator Coils
There are many component parts in your AC system, and they all have an important role to play. But the evaporator coil takes a lot of the credit: this is the air conditioning component that absorbs heat energy from the surrounding air, transforming hot, humid air into something cooler, drier and more comfortable.
How does an evaporator coil work?
There's a lot of ingenious science behind air conditioning and HVAC systems, but the process in the end is actually quite straightforward. Here's how your evaporator coils work:
- The compressor and condenser turn the Freon™ (or similar refrigerant gas) into a cool liquid under intense pressure.
- Evaporator coils allow the liquid to evaporate back into gas.
- The evaporation process extracts heat from the surrounding air, lowering the air temperature.
- Now that you have cool air, it needs to circulate through your home—and that’s where the air handler comes in.
Occasional light maintenance—and some help from the pros
For your air conditioner to work efficiently, it's important to keep your evaporator coil clean. This is usually as simple as changing your filter frequently at least once every 3-4 months, or every month in the peak cooling months.
Beyond that, it pays to get your local ARS®/Rescue Rooter® air conditioning specialist on the case. Whether it’s a prompt repair or the ongoing care of our air conditioning Home Service Plan, you can be confident that your comfort is in good hands with our trained experts—and our Exceptional Service Guarantee.