There are many new topics popping up about camping in the cold and staying warm, reflectix, Mr. Buddy's, etc. I started camping with the Boy Scouts at an early age and we camped Fall, Winter, and Spring. I have many memories about sleeping in tents or leantos (3 sided building) in the winter and waking up to a new snowfall or the water jugs being frozen solid. We all had 0 degree mummy bags. and stayed warm while sleeping. Must you absolutely have a heater going while you camp? Or is there anyone out there who would camp in the cold without heat? I know it is nice, and I have a furnace and a Mr. Buddy heater, but if I camp without DW I would use it more to heat up the pup before bed or in the morning. I could also survive without heat and enjoy it.