[bushpilot]

i think the tank on our coach is 50 gallons - in one fairly heavy camping season (spring to fall) we used LESS than 1/4 of the tank....we use propane for the heater (used it 2 or 3 evenings), hot water heater & fridge.

we always use propane for the water heater and coach living area heater, only the fridge switches to ac current when were on shore power.

of course we live in texas so ymmv (but showers for 3-5 people is our biggest point of LP consumption).