Frozen Pipes: What to Do Now, How to Thaw Them and How to Prevent It
Updated October 31, 2026 · General information, not plumbing or legal advice
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The short answer: If a faucet gives only a trickle in freezing weather, suspect a frozen pipe. Keep the faucet open, find the frozen section and warm it gently with a hair dryer, heating pad or hot wet towels. Never use a torch or open flame. If you can't find it, can't reach it or can't thaw it, call a licensed plumber. If a pipe has burst, shut off the main water valve first.
Safety first. Never thaw a pipe with a torch or any open flame. They are a fire hazard and can release deadly carbon monoxide. Keep electrical cords away from water, and stay out of rooms where water is near outlets, panels or appliances.
Guides
What to do when pipes freezeThe first steps, from confirming a freeze to calling a plumberHow to thaw frozen pipesSafe thawing steps, what never to use, when to stopHow to prevent frozen pipesA checklist for before, during and away from homeHeat tape and pipe insulationPipe sleeves, UL-listed heat cable and faucet coversPlumber for frozen pipesWhen to call, what to do while you waitBurst pipe first stepsShut-off, safety, photos, cleanup and insurancePipe insulation guideFoam vs fiberglass vs wrap, install steps, outdoor pipesOutdoor faucet coversCover and drain hose bibs, and what frost-free meansOutdoor faucet leaking after a freezeShut it off, find the leak, repair or replaceHow to winterize a houseA fall checklist from pipes to the roofWinterize a sprinkler systemDrain methods, blowout cautions, when to hire a proWinterize an RV water systemDrain, bypass the heater, add RV antifreeze
Common questions
How do I know if my pipe is frozen?
The Red Cross says that if you turn on a faucet and only a trickle comes out, suspect a frozen pipe. Likely places are against exterior walls or where your water service enters your home through the foundation.
What temperature do pipes freeze at?
Texas A&M AgriLife Extension says water pipes have the potential to freeze and burst when the outside temperature reaches 20°F or below. Exposed or poorly protected pipes are the most vulnerable.
Can I thaw a frozen pipe myself?
Often, with gentle heat. The Red Cross says to keep the faucet open and apply heat with a heating pad, hair dryer, space heater kept away from flammables, or hot wet towels. Never use a torch or any open flame. Call a licensed plumber if you cannot find, reach or thaw the frozen section.
What temperature should I keep my house at to prevent frozen pipes?
The Red Cross says to keep the thermostat at the same setting day and night, and if you are away in cold weather, to leave the heat on and set no lower than 55°F.