Picked up Okanagan this weekend-Wow!!

I am not sure how efficient the Onan propane type gensets are. I have a Honda 2000 and have to say, trouble free, always runs for me and is exceptionally quiet. My problem has always been the length of time for fuel when using an electric heater. I liked to run the ceramic heater in the bedroom on cold nights to save on truck battery and propane but the Honda would always run out of fuel after about 6 hours due to the load the heater would put on the genset. Your camper might be much better insulated than my Palamino was and have a longer fuel burn time/tank. Good luck with the new camper.