my hose was frozen yesterday. left it for a half hour outside, then put it in my tub. ran cold water around it, drained and repeated. 2 drainings. 1/2 hour i was down in the 80's. set my pot on the counter. opened the ball valve 1/4 way so it would drain slowly through a strainer and into the fermentor. pitched in the mid 70's, within 1 hour was in the high 60's and was bubbling away within 4 hours of pitching (with a starter). so it was an hour and a half vs half an hour, but a lot better than i thought it was going to be. next time i'm pulling the hose inside a few days before.