We wanted to do some winter camping so I got one of those Chinese diesel heaters and made a quick & dirty box so we could take it out for a test. I had about a half gallon of fuel in the tank and that lasted a full 16 hours before running out. Temp only got down to around 30 so it wasn't a really cold night. We had it on the lowest setting and the camper stayed in the 60's all night. I scrunched up the heat duct to shorten it from what is in the photos and need to do some work on that. Overall a very successful test so now I can finish the job and make it look pretty. For just a bit over $100 it works great.
View attachment 637664
Nice set up! I had been thinking about heat in the top this winter and saw those heaters, glad to hear it works well. I came up with a solution using one of the vents on the dash. Of course it requires the jeep to be idling, but both of us can be up there with both hatch sections in place getting heat.
Basically it is a wet/dry vac hose that fits snugly into the ductwork inside the vent and secures just by pushing. Then it leads up into a flange I found in the home depot plumbing section. Goes in and out very quickly. The last photo is where I store the hose above the back passenger roll bar.
Up top it uses another Jeep vent attached to the flange and runs through the cushion so it flows right in. Hard to describe, I do not have any pictures of the vent up top but Ill take some and post if interested.
See below for the pics...we definitely did some chilly camping this year and it was awesome, also easy to find a campsite. Keep warm and enjoy.