A UV lamp is a bulb that emits specific spectrums of light that inhibit the growth of mold and mildew. They are typically installed near the evaporator coil or additionally in the supply duct work. A UV lamp will keep mold and mildew from growing inside your heating/cooling system's duct work. With new technology, UV bulbs can be paired with a catalyst that causes a chemical reaction in the duct work that actually sterilizes the air in your home. These UV lamps will keep you and your family safe and healthy by killing such viruses as bird flu, anthrax, e-coli, and many more in a matter of hours.