I purchased a Champion 6250 watt model ******* a little over 3 years ago I have used it about three times and now it's nothing more than a big boat anchor unless I purchase a new $210.00 control unit. I believe any other company with a GOOD reputation would have replaced it knowing it's only a few months out of the 3 year warranty. But they do not stand behind there product so I'm thinking they are not very proud of what they manufacture and sell