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How Do I Prevent Pipes From Freezing in Winter?

Last updated October 31, 2026

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The short answer

Insulate Your Pipes

Wrap exposed pipes in foam pipe insulation, especially those in unheated areas like basements, attics, and crawl spaces. Pay attention to pipes near exterior walls or in cabinets. Use heat tape or cable for extra protection in very cold spots.

Check for gaps in insulation around pipe entry points. Seal any holes or cracks with caulk to keep cold air from reaching the pipes. Consider adding insulation to your walls and floors if you have frequent issues.

  • Foam insulation sleeves are easy to install
  • Heat tape works well for stubborn areas
  • Seal gaps with caulk or spray foam
  • Focus on attics, garages, and crawl spaces

Keep Warm Air Circulating

Open cabinet doors under sinks to let warm room air reach the pipes. Keep garage doors closed if you have water lines in the garage. During extreme cold, let a small trickle of water run from a faucet to keep water moving.

Keep your thermostat at the same temperature day and night. Lowering it at night may save energy, but it can also allow pipes to freeze. If you leave home for several days, keep the heat at a safe level, around 55 degrees Fahrenheit.

Drain and Shut off Water

If you have outdoor faucets, disconnect hoses and drain them before winter. Turn off the water supply to outside spigots and open the valve to let remaining water drain. For seasonal homes, shut off the main water supply and drain all pipes.

Know where your main shutoff valve is located. Write it down and keep it accessible. If a pipe bursts, you can quickly turn off the water to limit damage. If you live in Columbus, keep that location written down.

Handle Frozen Pipes Safely

If a pipe freezes, never use an open flame to thaw it. Use a hair dryer, heat lamp, or electric heating pad. Gently warm the pipe from the end toward the frozen section. Keep the faucet open to allow water to flow as it melts.

If you cannot find the frozen section or the pipe bursts, shut off the main water valve immediately. Then call a plumber for repairs. If water has already leaked into your home, local water damage pros can help with cleanup and drying. See a doctor if you feel unwell from any mold or contaminants.

Prepare Your Home for Cold Snaps

Before a cold snap, check your home for drafts and add weather stripping to doors and windows. Make sure your heating system is in good working order. Have your furnace serviced before winter starts.

If you live in a cold climate, plan ahead for freezing temperatures and snow. Keep plastic sheeting over uninsulated windows. Leave your heat on even if you are away. A small investment in prevention can save you from a costly burst pipe.

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Frequently asked questions

What temperature should I keep my house to prevent frozen pipes?

Keep your thermostat at 55 degrees Fahrenheit or higher, even when you are away. This is generally enough to keep pipes from freezing in most homes. Lower temperatures increase the risk of freezing, especially in unheated areas.

Should I let my faucets drip during freezing weather?

Letting a faucet drip can help prevent freezing because moving water is less likely to freeze. Turn on a faucet at the farthest point from your main water supply and let it run at a very slow trickle. This is especially helpful during extreme cold snaps.

What should I do if a pipe freezes and bursts?

First, shut off your main water valve to stop the flow. Then call a plumber to repair the burst pipe. If water has damaged your floors, walls, or belongings, contact local water damage pros for cleanup and drying. Act quickly to minimize mold and structural issues.

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