The freedom of movement of which I speak in our general return is valid for temperatures ! It's hot ? Go to the North ! The thermometer goes down ? Do the same thing ! If the cell is equipped with a gas heater that we have unfortunately not been really tested because he passed away - if anyone knows it ! Failing that lent us a Japanese stove. Of course it works with oil (and I do not like fossil), but four square metres it heats quickly, We consumed approximately 30 litres for the winter 2011.
Edition 2013 : We have lit the heating only once this winter, He saw himself dethroned by a small heater at very low cost.
Moisture should not be a concern in the modern camper, but it is true that ours is not perfectly insulated windows level, suddenly we have from time to time of condensation (Winter only) and the ceiling or closets are a little wet, but nothing ever villain.