Duct for non-metallic material (fiberglass duct, fiberglass duct, duct polyurethane, phenolic duct, etc.), the central air duct cleaning equipment to add attachments. High-pressure air whip head and semi-rigid pipe connection, by a human operator into the duct, head whip for "percussion"-type, high pressure jet of air from the mouth spray head whip and drive head whip for whipping the wind pipe wall vibration, forming the so-called "air whip" in the high-pressure air spray head in the wind will whip the inner wall of high-speed "Army" dirt, to achieve effective cleaning purposes.