You need about 1 square inch venting for each 1,000 btu's of heat when using a Mr Buddy or Wave heater for longer than an hour. If it's for less time we don't worry about venting. We cook on our less efficient stoves and most don't vent, don't we? So spare me the lecture.
However, yes, we have the carbon monoxide detector that came with the camper and an extra detector just for redundancy.
To quickly warm our Escape
5th wheel at night we run a Mr Buddy heater on low, 4,000 btu's. It warms the camper in less than 15 minutes, whereas the furnace
takes at least an hour or more. We use refillable 1lb Flame King LP containers.
We camp in the shoulder seasons, many times the night temps get below freezing. I take our Mr Buddy to the cold showers at the campground. I get into the changing stall and turn on the Mr Buddy. After I get out, my area is nice and toasty. Worth every penny!
Haven't heard of anyone who has properly vented the heater die yet, ever! In November an idiot who insulated and sealed his van died when using his sunflower heater inside the van with no venting. They determined he disabled the safety switch on the sunflower heater and was also cooking on the heater. Now that man was an idiot! A dead idiot!