How serious is a frozen pipe?

Author: Miss Sonya Considine  |  Last update: Wednesday, August 13, 2025

Frozen pipes are a homeowner's worst nightmare in the winter. Not only do they prevent your water from flowing, they also pose a huge risk for bursting if quick action isn't taken.

Are frozen pipes an emergency?

Frozen water pipes aren't life threatening, however frozen or broken water pipes do cause damage to homes each winter. If pipes in the walls aren't properly insulated, they can freeze and rupture. (An 1/8-inch crack in a pipe can release up to 250 gallons of water a day, soaking floors, rugs, and furniture.)

Will frozen pipe thaw on its own?

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.

How likely is a frozen pipe to burst?

Although common, frozen pipes do not always burst. However, the ice can increase this risk when it thaws and is usually worsened as it raises pressure further which makes pipe bursting common near winter's end or springtime. Furthermore, the more water flowing through the pipe, the greater chance of rupture.

Should you shut your water off if your pipes freeze?

Ideally, to protect from freeze damage, the water supply should be shut off and the pipes should be purged (drained) of water. If purging is not possible, at the very least, faucets should be left open. This will allow the water to expand as it freezes so it will be less likely to burst the pipes or damage faucets.

How a Frozen Pipe Bursts | Ask This Old House

What not to do if your pipes freeze?

Don't ever try to thaw pipes with a:
  1. Blowtorch.
  2. Gas heater.
  3. Kerosene heater.
  4. Propane heater.
  5. Other open flame appliances.
  6. Any device near insulation.
  7. Electric device with extension cord.
  8. Electric heater, blow dryer, or other device near water.

Should I turn my faucet on if my pipes are frozen?

Keep the faucet open. As you treat the frozen pipe and the frozen area begins to melt, water will begin to flow through the frozen area. Running water through the pipe will help melt ice in the pipe.

Can a frozen pipe leak without bursting?

Misconception: Damage only occurs if a pipe bursts. The truth is... Even if a pipe does not burst, the expanding ice can still cause damage. This can lead to leaks which can cause significant damage over time if they go unnoticed.

Will running hot water unfreeze pipes?

Pipe-thawing options: There are several things you can do to thaw your home's pipes. Here's a list: Probably the most popular and safest pipe-thawing option is to use hot water.

How long will a pipe stay frozen?

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.

How to unfreeze pipes you can't see?

Apply heat to the frozen area

There are several ways to do this. You can wrap the pipes in thermostatically controlled heat tape, or you can use an external heat source such as a hair dryer or space heater.

Should I call a plumber if my pipes freeze?

If your pipes freeze:

If you turn on your faucets and nothing comes out call a plumber. If you detect your water pipes have frozen, turn off the water at the main shut-off valve in the house. NEVER try to thaw a pipe with a torch or open flame.

How do you know if a pipe bursts?

One of the most obvious signs of a burst pipe is the presence of water where it shouldn't be. If you notice puddles forming under sinks, near water pipes, or along walls, it's likely a sign of a leaking or burst pipe. Water stains on ceilings and walls are also telltale signs.

How do I know if my pipes are frozen or busted?

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.

Do you drip faucets during a freeze?

Should You Drip Faucets In Cold Weather? Yes, according to the Red Cross, the short answer to that question is you should.

Who is responsible if pipes freeze?

A professionally prepared lease agreement will often require the tenant to keep the unit heated to 60 degrees. If the pipes freeze, then under this lease agreement, the tenant may be responsible not only for their personal property but also the damage to the leased premises.

Should I shut off water if pipes are frozen?

But if they have running water, it's likely your pipes have frozen. 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.

How do you unfreeze pipes without bursting them?

If you have frozen pipes in your home, it can be tempting to try to heat them up as quickly as possible, but this could cause them to burst. Instead, use tools like a hairdryer, space heater, and even your home's thermostat to gradually warm the pipes.

Can frozen pipes cause toilet clogs?

Frozen Pipes and Water Blockages

When water inside a pipe freezes, it expands, causing water expansion that can burst pipes or block water flow. Even if the pipe doesn't break completely open, the ice creates an obstruction that prevents waste from flowing through.

How likely will frozen pipes burst?

Frozen pipes do not always burst; however, when pipes freeze, the risk of them bursting increases significantly. The good news here is, there are steps you can take during cold weather to help minimize the risk of this happening — saving you the hassle and cost of expensive repairs.

Will pipes unfreeze on their own?

Will Pipes Thaw on Their Own? Technically yes, but the “wait-and-watch” method carries risk. As that ice begins to thaw, any water caught between the faucet and the ice will cause increased pressure within the pipe. That increase in pressure can lead to frozen pipes bursting.

Will frozen pipe burst if faucet is open?

It's important to note that you shouldn't fully open your faucets and plumbing fixtures directly after a freeze. This will drastically increase the water pressure within the pipes if there is any frozen water inside them, causing the pipes to burst.

How long do pipes take to unfreeze?

Be prepared to wait at least 30 to 60 minutes. When the pipe begins to thaw, water will start flowing at a faster rate through the open faucet. Even after the water pressure is fully restored, it's recommended to keep the heat on the pipe to ensure the ice in the line is completely melted.

What do I do if my pipes are still frozen after 2 days?

If your pipes have been frozen for more than two days, shut down your home's water supply. Locate the frozen length using touch, sight and sound. Make sure the pipe hasn't burst, and open indoor faucets. Unfreeze the pipe using a hair dryer, heat tape, space heater or heating pad.

Will turning up the heat unfreeze pipes?

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.

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