I have two Big Buddies and both set off my Carbon Monoxide alarm installed in the RV.So I went back to the Catalytic which is more expensive but uses less propane...

My son uses one of the Big Buddies when it is cold in his older RV but keeps the windows open around it...It does keep the chill off.

I spent so many years living in an RV in super cold weather to know when you can do it and when you can't.When it gets to 15 degree's,things start to freeze up,like the water lines..Not enough to break but they do freeze with heat on in the camper.

If it is going to be 15 degree's or lower,I winterize my RV and use a Porta Potti and water jugs never to worry about freezing and breaking stuff.Better than chasing water lines with a hair dryer...

I lived in a 35 ft Jayco for 5 years in North and Central Idaho..You learn alot about them in time.What works and what does not..

Jayco