What is a built-in vacuum system?
A built in vacuum system is properly placed vacuum inlets connected by 2″ piping with a low volt wire running to all inlets. The vacuum power unit is installed in the garage, basement etc. As one can see one inlet covers a large part of the home; 3 inlets is average for the typical sized home, not including the garage where the unit is usually hung (there is an inlet on the power unit).