Reduces Odors: Charcoal filter reduces common odors from pets, smoking and cooking.Fights Germs: UV-C light helps reduce airborne bacteria, viruses, mold spores* and works with Titanium Dioxide to reduce volatile organic compounds. *Tested with Staphylococcus Albus, and Escherichia Coli, Aspergillus Niger, and Phi-X174AHAM Verified and Energy Star Certified: 21 inch 3 speed Hi-performance console is best used for rooms up to 365 Sq. feet. Filters and circulates room air over 4x per hour. The higher the CADR the faster the unit filters the air. CADR Dust (239), Pollen (237) and Smoke (235). The CADR (Clean Air Delivery Rate) displayed on the product carton may not match the ratings on our Guardian Technologies website. Please refer to our website for the most accurate ratings. In an effort to stay up to date with Energy Star Version 2.0 testing requirements, CADR ratings on the manufacturers website reflect the test results of product manufactured after 10.16.20.Filter Replacement Reminder: Only one single filter needs to be replaced every 6-8 months depending on the use of the product; Replacement filter is filter J (model FLT5900). IMPORTANT: Use genuine Guardian Technologies replacement parts to maintain product performance. 3 year limited manufacturer warranty.