I just came in from turning up the heater in my tank house for the third time tonight. It's after midnight and it has dropped to -30 at my house. It is supposed to be -50°F in town tonight, and I think the high for tomorrow is something like -20°F.
I have a remote sensor thermometer in the tank house so I can tell if need to turn up the heat down there. The darn thing has no foundation, and it is sinking, resulting in a breeze right on the pipe the brings the water into the house. I've put a heat trace on it and insulated it, but if it freezes I have to go out there with a hair dryer, plus catch it before the pump burns up. Ah, life in rural Alaska!
I've used an entire can of Crack-B-Gone (aka spray foam) to fill in the places where the walls have cracked, don't quite meet the floor anymore, and other such stupid things.
This house needs a LOT of work. And it all has to wait until summer.