The alternative is to shut off the water supply and drain all the pipes and appliances. Your insurance may not cover water damage from ruptured pipes if you have not taken such protective measures when you are away. Call your professional insurance agent to check on your homeowner's policy. If a pipe freezes, you might thaw it with a hair dryer or towel that you've soaked in boiling water. You can also try squirting hot water on the frozen area, using a turkey baster, but never use open flame to thaw the pipes.
Fire is an ever-present winter danger in the home.
Fireplaces, woodstoves and kerosene or electric space heaters are a major cause of winter house fires. Make sure everyone in your family respects these heating devices and knows how to operate them safely. Always use a fireplace screen and a fireproof rug. Prevent chimney fires by having your chimney swept clean of soot and creosote buildup every couple of years - or more often if you use waxy fire starter logs. Also, be sure fire extinguishers are charged and check the batteries in your smoke detectors.