Evaporator Coils

A Critical Component of
Your Cooling System

The evaporator coil plays a crucial role in your air conditioning system — without it, cooling simply wouldn’t be possible. Instead of “blowing cold air,” your air conditioner works by compressing a refrigerant gas and condensing it into a chilled liquid. That cold refrigerant is then pumped indoors to the evaporator coil, where the actual cooling process begins.

The coil, made of tightly wound metal tubing, contains the cold refrigerant. As the furnace or air handler’s fan pulls warm air from your home, it passes over the coil. Heat energy is absorbed into the refrigerant, turning it back into a gas and leaving the air cool and comfortable before it’s circulated back into your living spaces.

Because this process naturally creates condensation, evaporator coils can become damp and prone to mold growth over time — reducing system efficiency. Installing a UV lamp near the coil helps eliminate surface mold and maintain peak performance.

At Al & Riley’s Air Conditioning, we’re proud to be a trusted Casa Grande air conditioning and heating company dedicated to providing top-quality indoor comfort solutions. Contact us today to learn more about coil maintenance, cleaning, or replacement options.