Originally Posted by JRems
Why are your pipes freezing? Can't you add some electric heat tape to the pipes or insulate them? If the pipes that are freezing are going to a faucet, leave it on a crack so there is a fast drip. It won't freeze easily when it's running.
If your pipes have frozen twice already, I'd be figuring out WHERE it's freezing, and getting heat tape and insulation installed YESTERDAY. If it would burst in the middle of the night (or during the day when you're gone), you're going to be in for a world of hurt. If everyone local is sold out, go to Amazon for a tape. Or, if the pipe is freezing inside a closet or something, a 100 watt light bulb might provide enough heat to prevent freezing.
Final option, like has been said, if you can't do anything else, leave the faucets cracked open just a bit (fast drip/small stream). Flowing water does not freeze as easily - you're moving supply water, which hopefully is around 40 degrees. (If you ever see a fire crew out working in sub-freezing temps, you'll notice they never completely shut the nozzle down, they'll leave a slight trickle to prevent the hose and valve from freezing up)