Let those faucets drip.

When a cold snap pushes into the area, it’s a good idea to let water drip from the faucet. “Make sure it’s cold water when you do this,” Pfeiffer says. “Running cold water through the pipes, even a trickle at a time, helps prevent freezing.” This is especially true on exterior walls where there may be limited insulation. “Don’t forget about seldom used areas such as guest bathrooms or laundry sinks and equipment.”