The HEPA-Pure filter for Alen BreatheSmart purifies air for allergy, asthma, and dust concerns

Polluted air first passes through Alen's washable Pre-Filter to capture large particles, extending the life of the filter. In the second layer, air moves through a unique, electrostatically charged HEPA type material that attracts and captures dust, pollen, pet dander, mold spores and other airborne pollutants. Relief from allergy and asthma symptoms has never been so simple.

Replace UV bulb annually. Overtime the lamps ability to emit UV light decreases. Remember UV light is invisable - the the lamp might still be glowing but not enough to effectively neutrilize the bacteria on your filter