|If a pipe has broken, turn off the water at the main shutoff valve, which is usually at the water meter or where the main line enters the house. If the water is still running and no pipes have burst, you can take the following steps. (Of course, if you suspect a more serious problem, call a plumber.)
Turn on the faucet. As you heat the frozen pipe and the ice plug begins to melt, you want the water to be able to flow through. Running water through the pipe, as cold as it is, will help melt ice in the pipe.
Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, or a portable space heater (kept away from flammable materials), or by wrapping pipes with towels soaked in hot water. Never use extreme heat or open flames, such as a heat gun or blow torch, to thaw a pipe. This presents a fire hazard and can also cause serious damage to the pipe.
Apply heat until full water pressure is restored. Check all other faucets in your home to see whether you have additional frozen pipes. If one pipe freezes, others may freeze, too.
Call a licensed plumber if you are unable to locate the frozen area, if the frozen area is not accessible, or if you cannot thaw the pipe.
Contact your insurance agent on what additional steps should be taken. You are required by your insurance contract to do “what is needed to prevent further damage”.
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