Your pipes will eventually begin to thaw on their own once the temperatures rise above freezing. As they do so, you may begin to hear your pipes making gurgling, clanging, or banging sounds as the ice begins to move. The hot water heater may do the same.
If you wait for your pipes to thaw naturally, it can take hours, days, or even weeks before the temperature outside increases enough to fully unfreeze the pipes. Anticipating this change can be difficult and frustrating, especially if there are frequent weather shifts.
Whether they're in the process of thawing or expanding, frozen pipes don't always burst.
This could eventually lead to the pipe bursting and causing significantly more damage. It's better to proactively thaw a frozen pipe size than let it persist. What if the pipe bursts? If your water supply pipe does burst, turn off the building's water valve immediately to limit water damage.
If the pipe is behind a wall, you can turn up the thermostat and wait for the thaw. Or you can hook up a lamp to warm the area. Infrared lights work best because they don't warm the air, just the pipes behind the wall. If the pipe is exposed, you can heat it with a hairdryer.
The job goes more quickly by pouring hot water or a mixture of vinegar, baking soda and salt water down the drain. Space heaters, hair dryers and heating pads are highly efficient tools for unfreezing a drain pipe. If a frozen drain line ruptures, turn off your home's main water supply.
Thaw Frozen Pipes
Turn off the water immediately at the main shut off valve. Open the faucet so that water will flow through the pipe once the area is melted. This will help melt more ice. Apply heat to or around the pipe using a hair dryer.
Thawing Frozen Pipes
While you wait, reduce water pressure by opening all the faucets inside the home one-quarter turn. Water will begin to trickle out, helping the ice to thaw. Remember to close all faucets after full water pressure is restored.
Turn the Heat Upin the Property: You can attempt to thaw the frozen pipe by increasing the temperature in the property. Turning the thermostat up may be all that is needed to allow the ice blockage to melt.
Turn on all faucets: Checking each faucet in your home will help you narrow down your search. The faucets that have little or no water pressure likely have a frozen pipe in their supply line. If every faucet is showing low water pressure, the frozen pipe may be near the water meter.
A foul smell from the drain or faucet is a less-obvious warning sign. Odors are unable to filter out of the frozen pipe and instead are forced back into the home's faucet. No water or a slow trickle when a faucet is used. Whistling and banging coming from pipes, or strange bubbling sounds when you flush a toilet.
Open a Hot Water Valve
By opening faucets, water will have a path to flow as the pipe unfreezes. Steam will also need a place to go as heat is applied. As the pipe thaws, running water will accelerate the defrosting process. Therefore, it's beneficial to have faucets running until the pipe is completely thawed.
Continue to apply heat
Don't stop heating until the full water pressure is restored. Even then, it's a good idea to leave the faucet open for a few minutes after the pipe is thawed.
Pipes typically burst when exposed to extremely low temperatures for an extended period of time (anywhere from 1-3 days depending on temperature). This is especially true for pipes located on exterior walls. A frozen pipe is likely to burst when any water or liquid trapped within it freezes and begins to expand.
A plumber can properly thaw your pipes and give you tips on how to keep your pipes from freezing and causing an emergency in the future.
The simple answer is that as water freezes into ice, it expands, resulting in solid ice filling more volume compared with the liquid that used to be running through the pipes. That ice creates pressure inside the pipes that can cause a rupture.
Try wrapping an electronic heating pad around the pipe, heating the area with a hair dryer, or both. Towels soaked in hot water will help as well. Apply until water runs normally. If possible, locate the section of pipe that is frozen and thaw it yourself using gentle heat (slowly warm it up).
Burst pipes are not only an inconvenience—they can result in devastating water damage and costly repairs. You may be wondering if pouring hot water down the drain will unfreeze pipes. The answer is “yes” if the frozen pipe is a drain pipe.
Frozen pipes can cut off your home's water supply and cause damaging leaks. In many cases, the help of a plumber is needed to resolve the problem. To prevent further damage, it is generally recommended that you turn off your main water supply valve and your water heater until repairs have been made.
Your pipes will eventually thaw on their own, but this will take at least a few hours or potentially several days, depending on where the pipe is located and the air temperature around it.
Shut Off Your Water Supply. Ask any plumber, "Should I turn off the water if pipes are frozen?" and they'll immediately tell you, "Yes." Locate your main water line and switch the shut-off valve so the flow of water stops. By doing this, you'll reduce the amount of pressure that builds inside your frozen pipes.
Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, a portable space heater (kept away from flammable materials), or by wrapping pipes with towels soaked in hot water.
How long will the pipe freezing last? Once the pipe freezer is turned off or removed, it takes from 10 to 30 minutes for an ice plug to melt. Periodically topping up the gas, or keeping gas flowing on a reduced trickle, will ensure the ice plug remains solid and does not melt.
An open faucet that produces no water or only a slow trickle is a good reason to suspect that a pipe has frozen. Check the water meter; if it shows movement when all water fixtures are off, it is likely that a pipe has burst.