Features & details 3-IN-1 AIR PURIFIER FOR HOME - True HEPA air filter reduces up to 99.97% of harmful germs, dust, pollen, pet dander, mold spores, and other allergens as small as .3 microns from the air KILLS GERMS - UV-C light helps kill airborne viruses such as influenza, staph, rhinovirus, and works with Titanium Dioxide to reduce volatile organic compounds TRAPS ALLERGENS - Pre-filter traps dust, pet hair, and other large particles while extending the life of the HEPA filter REDUCES ODORS - Activated charcoal filter helps to reduce unwanted odors from pets, smoke, cooking fumes, and more QUIET OPERATION - The lowest setting can be used as gentle white noise at night for a quiet, restful sleep SETTINGS - Choose between 3 speed settings and an optional UV-C light ROOM SIZE - 28-inch purifier filters air 4x per hour at max speed in medium to large rooms up to 180 sq. feet. CADR RATING: Dust (123) Pollen (128) and Smoke (116) GENUINE REPLACEMENTS - Only use Genuine GermGuardian replacement parts to maintain performance REPLACEMENTS - Replace the filter every 6-8 months and the UV-C bulb every 10-12 months. Filters: GermGuardian filter C (model FLT5000) or a 4 pack of GermGuardian carbon filters (model FLT28CB4). UV-C Bulb: Model LB5000 AHAM VERIFIED & ENERGY STAR CERTIFIED - This air purifier was rated for its ability to filter tobacco smoke, dust, and pollen from rooms and be Energy Star Certified and CARB compliant