Our 337 Reflection is currently parked outside. The temperature tonight is expected to be 5 degrees F., and is expected to be below freezing all day for the next 2 days. We are not staying in it right now, but until recently have been travelling in it. It has not been winterized since it will be used again soon. I have shore power connected (but not city water supply) and furnace thermostat set to 38 degrees F. I am curious as to amount of propane usage others have seen. I have two full 30 pound tanks. Anyone know what I should expect? Thanks in advance!