Envion Therapure HEPA Air Purifier 200 sq ftThe Thera Pure line of air purifiers is the only line with Triple Action Purification: (1) a uniquely engineered cleanable HEPA Type filter helps remove particles from the air, (2) a UV germicidal light helps reduce germs and bacteria, and (3) a photocatalyst filter helps reduce VOCs (volatile organic compounds), which are found in paint and carpet fumes. Thera Pure air purifiers help remove allergens and pollutants including dust mites, pollen,