It's about Time. The most comfortable and quietest backpack Sanitaire has ever built. When indoor air quality is an issue, the Quiet Clean HEPA Back Pack is the ideal solution for keeping the air clear. With its load dispersion technology and comfortable harness designed for comfort, balance and heat dispersion, this cleaner results in less user fatigue, reduced turnover and greater cleaning efficiency. At less than 63dBA, the QuietClean BackPack Vac is ideal for cleaning locations where noise needs to be kept to a minimum. A large assortment of tools and attachments help clean every surface.