Our TH has the Onan 4k mounted right under the master bed. Only time I can feel any vibration is when laying down going to sleep. Then the noise and vibration is just enough that I sleep like a baby. If the camper is quiet, of course you can feel and hear the generator. As soon as radio or TV is on it doesn't bother you at all. I love the built in generator. We travel a lot in hot areas. Being able to start the AC an hour before we get to destination is awesome. I have a 30 gallon fuel station, and it burns 1/2 gallon an hour with the AC on.
