I spend more time with a screwdriver than I do hoovering. To be honest you would need some qualifications in electrical repairs and a great deal of patience with this machine. Yes the ball helps you whizz around great! Then you spend another hour taking the bloody thing apart to clean and unblock often resulting in all the hoovered dust ending on the floor againn. I then get my old hoover out to hoover it up, A complete disgrace, I want my money back.