4 IN1 AIR PURIFIER : True HEPA air filter reduces up to 99.97% of harmful dust, pollen, pet dander, mold spores, and other allergens as small as .3 microns from the air ; Input Voltage: AC120 Volt ; 60 HertzKills germs : uv c light helps kill airborne viruses such as influenza, staph, rhinovirus, and works with titanium dioxide to reduce volatile organic compoundsTraps allergens : pre filter traps dust, pet hair, and other large particles while extending the life of the HEPA filterReduces odors : ACtivated charcoal filter helps reduce unwanted odors from pets, smoke, cooking fumes, and moreQuiet mode : ultra-quiet sleep mode with a programmable timer helps you get a good night’s rest with cleaner airGenuine filter replacement : only use genuine germ guardian technologies replacement filters every 6 to 8 months to maintain performanceSettings : choose 5 speed settings, customizable timer settings (up to 8 hours) and an optional uv c lightRoom size : filters air 4x per hour at max speed in medium to large rooms up to 167 square feet; cadr rating: dust (114) pollen (127) and smoke (108)Energy star certified : germguardian’s energy star certified and carb compliant products help you save on monthly energy costsRecommended filters replace with guardian filter c (flt5000) or a 4 pack of guardian’s carbon filters (flt28cb4)