we usually use an old army stove that you can use gas,diesel,kerosene,wood.we usually use diesel and fill up a couple of jerry cans and stay warm in my 14x16 canvas tent five gallons will run from 5 to 30 hours depending on what you have it set on and since the truck is disel we always have a supply if we run out just have to make sure both tanks are full before we head up. got a bigger tent this year hope it keeps us warm i sure it will though.i am ready to go got it the tent set up and checking everything out today.