nonrev321, Also to consider... type and seasons for your boondocking. Good insulation is very important, whether you are in the heat or cold. We do a bit of winter boondocking, which would not be possible with a poorly insulated RV. Even then, on a recent 3 week boondocking trip (with several nights in single digits) we used quite a bit of propane. We averaged about 14 lbs. (approximately 3 1/2 gallons) per day ( if I didn?t mess-up the math)! For our winter trips...we carry an auxiliary propane tank(approximately 40 gallons/ 160 lbs.),which is much better than constantly removing and refilling your RV bottles. And as mentioned, batteries ( recommend at least 4), as much solar as you have roof for, and a small generator. Even being conservative, you will go thru a lot of water. We carry a 55 gallon drum filled with water for the extended stays, and transfer to the RV when there is room in fresh tank. Whenever you leave camp, you can refill your auxiliary storage. We use a 55 gal drum, but there are many shapes/sizes of auxiliary plastic tanks available! On your residential refrigerator, you may also consider what we did with our chest freezer. We have a small stand alone inverter (in our case an 800 watt), to power our freezer. This way we don?t have to ?power-up? our big inverter, which energizes the entire RV (saving on battery consumption).
Long term boondocking away from ?un?-civilization is challenging... but worth the effort!