im lost here....are you saying you have a domestic (ie residential ) fridge in your camper?? are you asking about propane usage in summer or winter?? what fan does your fridge have?? do you mean the little 12volt fans we all add as a mod to the cooling fins...those things will run forever on a single deep cycle battery...
either way the fridge uses little propane...i go all summer on one tank of propane if even that....tahts about 20 days of camping worth.
now in the winter, if we are up in the mts, running the heater will use up some propane quick.....
2015 F350 Platinum Fx4 6.7 Diesel Dually. B&W turnover, B&W Companion, air bags and wireless controller.
2015 Heartland Road Warrior 420 Rt
2012 f250 Fx4 6.7 Diesel crew cab tinted n tuned
2012 lacrosse 318bhs touring- sold