When I lived in St. Louis my RO/DI system was in the garage, just like it is now, safe from any overflows and very conveinent with a drain and plumbing. Then winter came along and the temperatures dropped and my filter system basically blew up when it froze. I dont know if its going to get as cold this week as they say it is but Im never taking the risk again, my rodi is back in the house for the week.