Duct Cleaning using Negative Pressure

Cleaning Under Negative Pressure: As cleaning agitation proceeds inside the duct work, dislodged particulates are sucked out of the duct and into the vacuum receptacle. Working under negative pressure prevents contamination of household air during the cleaning process as well as later, when loosened contaminants left in the ducts might infiltrate living spaces after the system is restarted. The vacuum force itself also enhances the cleaning action of the tools.