A Technician connects the power vacuum to the home's air handler with a 10" vacuum hose. Then he inserts the AIR SWEEPER(High Pressure Air Duster) in to the duct work. Controlled with a hose connected to the air compressor which supplies up to 200 pounds of air pressure. A high-velocity blower is used  at the registers, in conjunction with the vacuum and the appropriate air driven tools, provides additional blasting power to remove particulate matter without agitating aged duct surfaces. Virtually a touch free cleaning.Important for fiberglass ducting(common to Florida) due to the fact that there is a coating on this type of duct to prevent the fierglass from being distributed throughout the conditioned area