Will a toilet break if it freezes?

Author: Domingo Daniel  |  Last update: Wednesday, April 30, 2025

Can toilets freeze? Just like anything else that carries water, a toilet can indeed freeze. However, it's usually the pipes that lead to and from the toilet that freezes, and not the tank or bowl.

Will a toilet crack if it freezes?

Water expands when its frozen (throw a bottle of water in the freezer and let it freeze, than unfreeze, you will see it deforms the bottle), and that expansion, plus the unfrozen water creates a lot of pressure on the pipe or ceramic, and can cause the toilet to break or crack, or the pipes to burst.

What happens when your toilet freezes?

Yes, occasionally, but it's very bad. If your toilet freezes, most of the water in the pipes will too, causing massive leaks in the spring. You basically have to gut the house when that happens.

Will a toilet not flush if pipes are frozen?

If your pipes are frozen, you can't flush your toilet. Drain pipes that take out the toilet's wastewater are totally separate from the supply pipes, one of which brings water into the toilet. If the supply pipes are frozen, you can likely only flush the toilet one time, unless you manually add water.

How do you unfreeze a frozen toilet?

If the toilet bowl is frozen, you can thaw it with a blow dryer or space heater on low as to not shock the system with too rapid a temperature change. To flush the toilet without the main water supply working, you will need liquid water, at least 1.5 gallons or so, and preferably a bucket to hold the water.

Toilet Freeze During Cold Weather – How to Avoid

Will frozen toilet pipe thaw on its own?

Your pipes will eventually begin to thaw on their own once the temperatures rise above freezing.

Why is my toilet not filling in the cold?

This could be due to a variety of reasons, including frozen pipes or issues with the toilet mechanism becoming sluggish due to the cold. How to Address It: Check for any blockages in the pipes. If the pipes are clear, the problem might be with the toilet itself.

Can you pour hot water down the toilet to 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.

Should I try flushing a clogged toilet again?

DO NOT: Take the flush-and-a-prayer method of flushing again – and again - until the blockage breaks up. Chances are this could lead to overflow. DO: If water is already rising, lift the tank lid and carefully use the rubber floater to block water from filling the hole at the bottom.

How long does it take for plumbing pipes to unfreeze?

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.

How to tell if pipes are frozen?

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.

How to prevent water pipes from bursting in cold weather?

Close inside valves that control the water supply. Open the outside spigots to allow to drain water out. Keep outsides valve open so water remaining in the pipe can expand without causing a break. When freezing weather is coming, turn off water to outside spigots and drain all water from the line.

Why won't my toilet flush?

The Toilet Won't Flush Correctly

A clogged or slow-flushing toilet may be the result of a clog or a problem with the flush handle, flapper, lift chain or water level. If you have a clogged toilet, turn off the water supply valve as soon as you notice the toilet isn't flushing properly.

Will a frozen toilet pipe burst?

Most bathrooms are located on external walls, which are more vulnerable to freezing due to wind exposure. If not addressed promptly, the pressure from the expanding ice can lead to burst pipes, flooding, and extensive water damage.

Can a toilet shatter?

Exploding toilets

In 2014, Sloan's Flushmate pressure-assisted flushing system, which uses compressed air to force waste down the drain, was recalled after the company received reports of the air tank failing under pressure and shattering the porcelain.

Can cold weather affect your toilet?

Cold weather impacts water flow, especially in older plumbing systems. When temperatures drop, water flow slows, increasing the likelihood of clogs. Low water flow can also occur due to ice formation within pipes, reducing pressure and making it harder to flush waste efficiently.

Is it okay to leave a clogged toilet overnight?

Letting a clogged toilet sit too long can result in more severe problems. Beyond the risk of overflow and water damage, the clog could also cause toilet water to back up into other parts of your plumbing system, affecting sinks, showers, and even your home's main sewer line.

What is the strongest thing to unclog a toilet?

One of the strongest substances for unclogging a toilet is a commercial drain cleaner specifically designed for toilet clogs. These cleaners typically contain powerful chemicals that dissolve organic matter and stubborn blockages.

Will the toilet eventually unclog itself?

You'll be pleased to know that a standard blockage, caused by flushing inappropriate materials or too much toilet roll, will unblock itself eventually. However, bear in mind that the problem will continue until you've had your drains jetted or rodded to remove any leftover obstructions.

How to flush a toilet if pipes are frozen?

Key Takeaways. If your toilet won't flush due to frozen pipes, locate the frozen pipe, apply a heating pad, drape hot towels over the frozen toilet pipe, heat it with a hair dryer, wrap it with heat tape, or turn on a space heater.

Will frozen pipes unfreeze on their own?

Risk of bursting

Frozen pipes will eventually thaw on their own, but it could take days or even weeks. If New York City is experiencing a brutal cold snap, the temperature could stay below freezing for many days. Meanwhile, the water in the pipes could be expanding.

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.

Why wont my toilet fill back up with water?

The main reason for a toilet tank not filling or filling slowly is due to the toilet fill valve. The most common reasons for the fill valve to slow down or no longer fill the tank after the flush are debris issues and the length of time a fill valve has been in use.

How long does it take for toilet pipes to unfreeze?

It will take roughly 30-40 minutes of using a heat source to thaw exposed pipes. If the pipes are enclosed it will take longer for heat to penetrate the insulation between your heat source and the pipe.

Why won't my toilet flush in winter?

One of the most common causes of a clogged toilet during the winter is ice blocking your pipes and drains. Make sure to check all outside drains regularly, as they may be frozen shut due to the cold temperatures. If you can't access the external drains, try to pour some boiling water down them to help thaw them out.

Previous article
Does Bar Keepers Friend actually clean?
Next article
Does insulation stop cold air?