Hey All,
I have this same concern with my DD and our KZ Sportsmen Sportster 355. I have a Mr. Heater Big Buddy that we used in our hybrid trailer. We never had issue with the Big Buddy but the hybrid had fabric bunk ends and we always left a corner of several of the windows undone to allow ventilation. I'm thinking of installing LP quick-disconnect to one of the Sportster's sidewalls to allow for connecting a 20# LP tank from the outside. I'm also planning to install a CO detector in the garage area just to be safe. Does anyone else use a Mr. Buddy heater in their camper?