A central vacuum has all the same basic components as any other kind of a vacuum cleaner but they are configured in a different way. In addition, it has a special feature that allows the vacuum to be started remotely. Although a central vacuum system may seem to turn on by itself what is actually happening is something different.
Hose
The hose on a central vacuum cleaner is much longer than other kinds of vacuums. Hoses of 30 feet are not uncommon. The hose does the usual job of conducting the dirt being picked up by the vacuum cleaner and sucking it or transporting it into the bag and filters. In addition to this, a central vacuum hose features a metal ring or a pair of contacts.
Wall Receptacle
Unlike ordinary or conventional vacuum cleaners, a central vacuum typically has one or more wall receptacles (sometimes called valves) into which the hose is connected when the vacuum is in use. There is usually a small spring-loaded flap or door covering the opening to these receptacles when the vacuum cleaner is not in use. Connected to the wall receptacle behind the wall is plastic piping that makes its way to the central vacuum location.
