I woke up this morning to a shower that would not come on and a bathroom sink that wouldn't run...FROZEN PIPES!! My crawl space doors were not the greatest so I went and bought four bails of stray to cover them. I also cut a hole in my floor behind my clothes dryer and ran the exhaust pipe into my craw space. Everything finally thawed and working now. I m letting all my faucets and shower drip tonight, hopefully it wont happen again. Do any of you have any tips for keeping your crawl space warm, or tips on how to prevent pipes from freezing?