CRI Seal of Approval - Committed to delivering an exceptional cleaning experience backed by certification from the Carpet and Rug Institute (CRI).HEPA Filter - Sealed HEPA system captures particles for improved air quality.Do Not Disturb 24/7 - Our premium line of QuietClean machines provide 24/7 any time of the day cleaning at 70 dBA or less which is equivalent to the noise level of a human conversation.LEED Daytime Quiet - Clean quietly and efficiently during the day with our 70 dBA or less machines to help businesses keep energy costs down and maintain their LEED certifications.Multi-Surface Cleaning - Complete any job with tools to clean hard surfaces, carpet, furniture and above-floor areas.Maneuverability - Comfortable harness and lightweight design (11.5 lbs.) allows for effortless operation.