Process in which a skilled, and certified technician, uses “POWER VAC” to remove dust, dirt, and other contaminants from the HVAC system. Air duct cleaning consists of vacuuming, air washing and scrubbing all of the accessible components using a high pressure, pneumatic equipment capable of reaching every nook and cranny. That includes diffusers, branches, plenums, as well as a blower fan and a coil when needed. It is recommended to sanitize the ductwork for its optimum performance. Duration of the cleaning process depends on the complexity of the HVAC system.