The short answer
Shut off the Water First
Before you begin, locate and turn off the main water shutoff valve for your home. This critical step prevents a major flood if the pipe has already cracked or bursts during thawing. Keep the faucet that the frozen pipe supplies open. This allows water and steam to escape, reducing pressure in the line as the ice melts. Acting quickly is important, but doing so safely is even more critical.
Apply Gentle, Controlled Heat
Use a common household hair dryer on a low setting, moving it slowly along the pipe. Start heating at the faucet end and work toward the colder area. This helps steam escape and prevents pressure buildup. You can also wrap the pipe with towels soaked in hot water or use an electric heating pad designed for pipes. Apply heat evenly and patiently to avoid damaging the pipe material.
- Hair dryer on low heat setting
- Electric heating pad or heat tape
- Towels soaked in hot water
- Portable space heater (kept at a safe distance)
- Never use a propane torch or open flame
- Avoid a blowtorch, charcoal stove, or kerosene heater
What to Avoid During Thawing
Never use a blowtorch, propane torch, or any device with an open flame. This can damage the pipe, create a fire hazard, and even cause the water inside to boil violently. Do not leave heating devices unattended. Avoid using electrical tools if standing water is present, as this poses a serious shock risk.
If the Pipe Has Burst
If you see spraying water or a significant leak, the pipe has likely burst. Immediately turn off the main water valve to stop the flow. Then, turn off electricity to the wet areas at the circuit breaker for safety. Contact a local plumber for the pipe repair. Water damage cleanup may also be required to prevent mold and structural issues.
Preventing Frozen Pipes
Prevention is much easier than emergency thawing. Insulate pipes in unheated areas like attics, garages, and crawl spaces. On very cold nights, let a trickle of water run from faucets supplied by exposed pipes. Keep cabinet doors open to allow warm air to circulate around plumbing. Remember that even in regions with generally mild winters, overnight temperatures can still drop below freezing and cause pipes to freeze.
- Insulate pipes in attics, garages, and crawl spaces
- Let faucets drip during extreme cold spells
- Seal cracks and openings in exterior walls
- Keep your home thermostat set consistently day and night
- Drain and disconnect outdoor hoses before winter
- Know where your main water shutoff valve is located
Need help right now?
Every hour counts once water gets into floors and walls. One call starts the response.
Call Now (520) 286-8912Frequently asked questions
How long does it take to thaw a frozen pipe?
Thawing time varies significantly, from less than an hour to several hours. The duration depends on the pipe's length, material, and how much ice is inside. Applying gentle heat slowly and steadily is safest. If you don't see water flow after an hour of careful heating, the blockage may be extensive or located in a hard-to-reach area.
What if I can't find the frozen section?
If you cannot locate the frozen area, or if the pipe is inside a wall, stop. Applying heat blindly can be dangerous and might damage wiring or start a fire. Call a plumber. Qualified plumbers have specialized tools, like thermal cameras, to find the blockage safely without damaging your home's structure.
Will my insurance cover damage from a burst pipe?
Many homeowner policies cover sudden, accidental water discharge from a burst pipe, but not always damage from lack of maintenance. You must take reasonable steps to prevent the issue. Policies vary, and your insurer decides what is covered. Report any damage to your insurance company promptly.