-22°F here last night. Kitchen faucet dripping rapidly and we made it through the night without the heated hose freezing, kind of. About 7:00 this morning a chunk of ice must have broken free and plugged the hose, it froze solid in about 5 minutes. I've never seen anything quite like that. The hose was still drawing 93 watts when it froze. I think Camco's -20°F rating is a bit aggressive, probably 0°F without water dripping is a more realistic number.
It's supposed to get to 29°F today and the extreme cold is over for now. Nothing like this on the 10 day forecast. Good riddance.