To protect your plumbing, start by keeping your home warm. Set your thermostat to no lower than 55°F, even when you're away. Let room-temperature water trickle from faucets to keep water flowing and prevent freezing. Open cabinet doors under sinks to allow warm air to circulate around pipes, especially those near exterior walls. Insulate exposed pipes with foam sleeves or heat tape, and seal any gaps around electrical wiring, dryer vents, and pipes to block cold air. Don't forget to drain and disconnect garden hoses, shut off outdoor spigots, and install faucet covers to protect outdoor plumbing.