The Best How Long Should Propane Last To Heat Motor Home Ideas. Unfortunately, there’s no way to tell exactly how much rv furnace propane your unit will consume, as there are several variables that must be taken into consideration. 30 lbs can last about 28 days or even more depending on usage.

Unfortunately, there’s no way to tell exactly how much rv furnace propane your unit will consume, as there are several variables that must be taken into consideration. Well, the furnace should start heating up the house 5 minutes after touching the thermostat. 30 lbs can last about 28 days or even more depending on usage.

















