The central vacuum cleaner, centralized vacuum cleaner or central sweeper is a system of intramural pipes , connected to a single or multiple suction motor unit. This system saves space , avoids wall damage and has a superior suction capacity. Different configurations are possible: conventional, crumb collector or with retractable hose . Can be installed in a condo , a house , a business or even a recreational vehicle , it is very versatile and easy to use. Several models are available to meet different specific needs. Can be used with or without bag in some cases.