I have a pretty old Filter Queen purchased new from a door-to-door salesman with a trade-in of a really good upright vacuum cleaner. It keeps cycling off due to overheating of the motor. I wish I still had the upright cuz Filter Queen has yet to honour the lifetime guarantee to repair or replace it as stated in all the original paperwork I still have. Kinda disappointing for a renowned company, but I will continue to pursue the matter.