Does letting the water run keep pipes from freezing?

Author: Natasha Tillman  |  Last update: Thursday, January 29, 2026

Let the faucet run: Letting a faucet drip during extreme cold weather can prevent a pipe from bursting. It's not that a small flow of water prevents freezing; this helps, but water can freeze even with a slow flow.

Will leaving water running prevent freezing?

If you leave your faucets open about 1/4 of the way or a little less you will prevent freezing. Running water requires a lower temp to freeze.

Does leaving a tap running stop pipes from freezing?

The running tap helps to prevent the pipes outside the house from freezing - one tap is sufficient, make sure it's one that's connected to the mains (eg kitchen). It doesn't need to be a strong flowing tap, a trickle can work (it did for me last night, -5 and no frozen pipes!).

How much to leave water running to prevent freezing?

You need just a trickle of water to drip so that water is moving through the pipes consistently. How long do I run the water? Let the faucet drip until temperatures are consistently above freezing to be on the safe side.

At what temperature should I let water drip?

So what do "below temperature" numbers look like? Farm Bureau Insurance noted that pipes have a temperature alert threshold of 20°F—which means pipes will begin to freeze at this temperature and in some cases, even burst.

Which faucet should you keep dripping to prevent freezing pipes?

Is it better to cover outside faucets or let them drip?

If you live in a climate with freezing temperatures, you'll want to cover your outdoor faucets in the winter rather than dripping them. Even with a vigorous drip, frigid temperatures can travel through your faucet and freeze the connecting pipes. Before using a cover, you'll need to properly winterize your faucet.

How many faucets should you let drip?

The truth is, you only need to allow one of your faucets to drip. This faucet should be the farthest away from the area where water enters your home through the pipes.

Can running water in pipes freeze?

But even pipes running through cabinets or exterior walls can freeze. The good news is there are some simple things you can do to keep your water running and your house dry. We highlight some ways to keep your pipes from freezing, as well as how to safely thaw frozen pipes.

Is running water less likely to freeze?

As the outdoor temperature approaches 32 degrees, turn on the indoor faucet farthest away from your water meter. Run only one faucet with no more than a trickle or water, about as thin as a standard strand of spaghetti, to minimize the chance of water freezing in your pipes.

Can pipes freeze but not bust?

Not all frozen pipes burst. However, thawing the ice can increase the risk, as it usually worsens the problem since it raises the pressure further.

Is it bad to leave the tap running?

Never leave the faucet running when unattended to help conserve water and lessen your water bill.

Can pipes freeze in one night?

Yes, pipes can freeze overnight if temperatures plummet drastically. Uninsulated pipes in unheated areas like attics or exterior walls are most vulnerable.

Should I just turn off water to the house if it's going to freeze?

DURING freezing weather:

If you plan to be away from home for several days, shutting off the water can reduce the chances of broken pipes. Set your home heat to at least 55 degrees. Shut off water to the house and open all faucets to drain pipes; flush the toilet once to drain the tank, but not the bowl.

At what temperature should you worry about pipes freezing?

Your pipes are at risk of freezing any time temperatures drop below 32°F. However, it's much more common for pipes to freeze when temperatures dip below 20°F. The longer the weather remains below freezing, the more likely it is your pipes can freeze if not properly protected and winterized.

Should I drip all my faucets in cold weather?

Unless your pipes are running through exterior uninsulated walls or crawlspace, there is no need for that. If your HVAC breaks and your house starts to approach freezing then yeah, drip the furthest away faucets. If you're living in the house and keep the heat turned on, you should be fine.

Will shutting off water keep pipes from freezing?

Prevent Frozen Pipes

Moving water keeps pipes from freezing. Find shut off valves for emergencies. Insulate pipes in unheated areas. Open cupboards and vanities to warm pipes.

When should you leave water running?

TEXAS, USA — When we reach freezing temperatures, it's typically best practice to keep the water running in your home! Dripping faucets can prevent your pipes from freezing and bursting.

Will dripping water stop pipes from freezing?

A common misconception is that the drip prevents water from freezing because it stays in motion when it's running through the pipes. Although this helps, the truth is that at extreme temperatures water can freeze even while it is flowing.

What temperature is considered freezing?

Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F.

At what temperature do I need to drip pipes?

As Jake Romano, plumbing expert at John the Plumber, explains, 'Frozen pipes become a real threat at 20 degrees Fahrenheit (-6.6 degrees Celsius) or lower. ' Therefore, as soon as cold weather hits these temperatures, drip your faucet if it is connected to a pipe.

Do spigot covers keep pipes from freezing?

One of the main functions of an outdoor faucet cover is to protect your pipes from freezing during the winter months. With winter temperatures that often dip into the teens, this is particularly useful in the Denver area. Faucet covers work by trapping heat that radiates from indoor plumbing to the outdoor spigot.

Does the freeze miser really work?

Freeze Miser protectors helped us do much during the last big freeze and kept our water troughs going for the cows. This customer chose to rate the product and not provide text. The freeze misers worked as advertised, keeping my outside hose bibs from freezing during extended temperatures well below freezing.

How do I make sure my outside faucets don't freeze?

6 Steps for How to Protect Outdoor Faucets from Freezing
  1. Remove the garden hose from the faucet in the fall. ...
  2. Shut off the upstream water supply valve feeding the outdoor faucet. ...
  3. Drain any residual water from the faucet and pipe. ...
  4. Install an outdoor faucet protector. ...
  5. Insulate the pipe leading up to the faucet.

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