We just purchased a water softener for our new RV since we're now in Indiana with HARD water. We are in our rig most of the year, and in the past, have built a heated storage box for our old unit every winter because the basement wasn't big enough. However, our new Big Horn 3010RE has a big enough basement that we've thought about keeping it in the basement during the winter and drilling a hole between the basement and water compartment big enough for the water lines. Has anyone had experience with this setup, or does anyone have any good ideas on how to keep it from freezing when the temps drop?