A small crack in a door, window, or wall acts like a blow torch in reverse. At near-zero weather, high winds can freeze a nearby pipe even though the surrounding room temperature may be 70 degrees. Fill holes in doors, windows, and walls near water pipes.
Running brooks and streams freeze during bitter cold weather. Don’t be fooled by the myth that leavng the water running overnight will keep pipes from freezing. It won’t, and it’s expensive. Instead, wrap pipes with weather-proof insulation or heat-tape products.
Look for the Underwriters Laboratory seal of approval on any electric products. And, keep in mind, heat-tape products will not function during power outages.