How to Thaw Frozen Pipes

Frozen pipes can stop water flow and may burst if pressure builds inside the line. If you turn on a faucet during freezing weather and only a trickle comes out, you may have a frozen pipe. Acting quickly and safely can help prevent major water damage.

Find the Frozen Area

Frozen pipes often occur along exterior walls, in basements, crawl spaces, attics, garages, or under sinks. Look for exposed pipes in cold areas. If one faucet has no flow but others work, the frozen section is likely nearby.

Keep the Faucet Open

Open the affected faucet before thawing. As ice melts, water needs somewhere to go. Running water also helps relieve pressure and can speed the thawing process.

Use Gentle Heat

Warm the pipe slowly using a hair dryer, heating pad, warm towels, or a space heater placed safely nearby. Start near the faucet and work back toward the frozen section. Keep heat sources away from flammable materials and never leave them unattended.

Never Use an Open Flame

Do not use a torch, propane heater, charcoal stove, or open flame to thaw pipes. This can damage pipes, start a fire, or create carbon monoxide hazards.

Check for Leaks

As the pipe thaws and water begins flowing, inspect the area for cracks or leaks. A burst pipe may not leak heavily until the ice melts. Know where your main water shutoff valve is in case water starts spraying.

When to Call a Plumber

Call a plumber if you cannot find the frozen section, the pipe is inaccessible, you suspect a burst pipe, or water does not return after careful thawing. Professional help is safer for hidden or severe freezes.

Prevent Future Freezing

Insulate exposed pipes, seal drafts, open cabinet doors during extreme cold, and let faucets drip when temperatures are dangerously low. Keep heat on in all areas with plumbing.

Final Thoughts

To thaw frozen pipes, open the faucet and apply gentle heat. Avoid open flames and watch for leaks as water returns. Prevention is the best protection, so insulate vulnerable pipes before the next freeze.