we bought an Eden pure Inferred heater on sale for the house and It heats 1,000 Square feet of space . I decided to load it up next camping trip because my wife said our pups furnace was too loud and she could not go to sleep . These are wonderful heaters because they put out very good heat ,are very quiet, and very safe because they do not get hot .You can touch it and it never gets hot . So I used this heater in our pup and I had it set to a lower number and it kept us toasty warm and it was barely audible and the other good thing is that your not using propane .If you were boon docking you'd have to run a generator I wouldn't advise that but at a camp sight with electric they are the nuts . Yes they are expensive even on sale but if you have one or can get one they are the best . The night I used this heater it got down to 50 F.