Why not 35 or off completely?
Other than draining the water the only major problem is liquids that will freeze. We put them in the shower, that way if they break or ooze there is no damage.
I never heard about drywall screws pushing out, could that be an urban legend? However it would be cheaper to fix a few small problems that heat an empty building through the winter. I have been leaving summer camps and cabins unheated all my life. The only damage has been a few pipes that burst because they didn't drain, and an exploded coke can.
|