Ultraviolet Light to improve your indoor Air Quality While protecting and purifying the interior of your home’s HVAC is a crucial consideration, the evaporator coil and surrounding areas are also important to remember. Moisture builds up quickly here, leading to mold and mildew growth on the fins of the evaporator coil, in the drain line, and even on the surface of the air filter. Our powerful unit features a 14-inch UV bulb to purify the evaporator coil and keep it sanitary. Want to learn more? Click Here to schedule an appointment!