Filtrete Ultra Quiet Air Purifier FAP00-RS is the quietest air purifier compared to AHAM certified air purifiers with a room size from 91 to 100 sq. ft. with air purifier on high speed. Filter captures 96% of large airborne allergens like pollen, mold spores and dust mite debris from the air passing through the filter. Part of the Energy Star program. Designed to provide cleaner air in small bedrooms without all the noise of conventional air purifiers.