The UV bulb of this Hoover air purifier effectively cleans out airborne germs and bacteria to give you purer air. With rinsable pre-filter, this room air purifier captures lint, pet hair and other bigger particles, so they do not trap the HEPA filter. The HEPA filter of this Hoover air purifier eliminates 99.97% dust and pollens, even as small as 0.3 microns. Also get rid of household odors and germs in no time with the ionizer of the Hoover WH10600. As per the dust level, the IntelliSense Control system of this room air purifier adjusts the fan speed, eliminating the need for manual adjustments. The automatic shutoff feature of the Hoover WH10600, as the name suggests, shuts it off automatically after 24 hours, saving you power and money