How often should vacuums be serviced?
Ideally, service vacuums every 12-18 months. With time, dirt and lint can gather on the vacuum’s motor bearings, which can slow the roll of its brush and place undue strain on its motor. The brush may also wear out with time, and this can reduce the vacuum’s cleaning ability by as much as 50 percent. Dirty motor bearings can also cause the vacuum’s engine to overheat.