The onboard generator on my 2004 Chevy Coachmen RV hasn't worked since I bought it a couple years ago. I looked into replacing it with another onboard but that was cost prohibitive. The mechanic at the local Onan repair recommended this stand alone model so I bought it and added a trailer hitch basket to haul it. My 30 amp plug get connected to the generator and I can run my a/c, lights, etc. just like being plugged into a shoreline. It's fairly quiet too.