This is what we got.....20# tank, 3 people in a ROO 23SS....5-6 nights of running the furnace at about 72 degrees plus or minus, using the oven at least once daily, using the stove top every day. We left home with 2 full tanks and DH swithched it over the last night needing the furnace, "just in case". We still had a small amount left...probably could have made it that last night.l
I have seen, think it was CW, some sort of temp sensor that sticks on the side of the tank to tell you what your propane level is. I have no idea if they actually work, but they're around $6 or so each.
Generally, not having to use the furnace daily, we fill both tanks at the first of the season and rarely have to swap to the other tank. We use the oven almost daily and the stove top from time to time. Furnace in the earlier spring weather and in the fall.
I would think in your size camper, you should get at least that usage if not better.
Trailerless but still have the spirit
2013 Rockwood Ultra Lite 2604 - new family
2007 Rockwood ROO HTT - new family
2003 Ford F-150
4 doggies - We support Adopt/Rescue.
Sam, you were the best!
Cubbie, Foxy, Biscuit and Lily - all rescues!