The GermGuardian Air Purifier Console with HEPA filter helps relieve allergies by capturing 99.97% of dust and allergens as small as .3 microns in size with its 360 degree filter. The activated carbon filter attacks common household odors including those caused by smoke, cooking and pets. This unit is designed with an easy to use touch control panel with features that support your homes indoor air quality. Equipped with 4 fan speeds, air quality monitor, auto mode, sleep mode, timer and a child lock. The Air Quality Monitor detects the amount of particles in the air and displays the air rating on an easy to read 3 color LED display. When in auto mode the GermGuardian reads real time air quality and automatically adjusts the fan speed, providing you with peace of mind that your unit is filtering your air accordingly. In sleep mode, the unit will run in low mode while the display lights turn off. The purifier has a timer for 2, 4, 6 or 8 hours, and a child lock. 19" tall, this GermGuardian air purifier is ideal for rooms up to 298 sq. feet.