If Pipes Are Frozen Should You Leave Water On Running

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Posted Nov 12, 2024

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Ice Formation
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If your pipes are frozen, it's a good idea to leave the water on a trickle to help prevent further damage. This is because running water is less likely to freeze than standing water, according to the American Red Cross.

Leaving the water on a trickle can also help to prevent pipes from bursting, which can cause significant damage to your home. This is especially true if you have older pipes that are more prone to freezing.

In some cases, leaving the water on a trickle may not be enough to prevent pipes from freezing, especially if you have a severe cold snap. In these situations, it's best to take more drastic measures, such as opening up cabinets and running hot water through the affected area.

Understanding Frozen Pipes

Frozen pipes don't always burst, but leaving them to thaw on their own can increase the risk of cracking or bursting.

The expansion of frozen water is a key factor in pipe damage. As water freezes, it expands in volume by approximately 9%. This expansion, combined with the obstruction caused by the frozen water, can lead to increased pressure and eventually a burst pipe.

Credit: youtube.com, How to Prevent Frozen and Burst Pipes | Ask This Old House

To prevent damage, it's essential to take action quickly if you suspect a frozen pipe. Here are the most common symptoms to look out for:

  • Low water pressure or a trickle when turning on a faucet
  • Frost on the outside of pipes in unheated areas
  • No water coming from one or more faucets

Keep in mind that pipes can freeze at 32 degrees or below, but freezing temperatures need to be sustained for at least half a day before pipe freezing becomes likely.

Freezes at 32°F

Water will freeze at 32 degrees, so technically that is the temperature at which it becomes possible for pipes to freeze as well.

The temperature needs to remain at or below freezing for a sustained period of time, making it unlikely for a pipe to freeze unless you're experiencing freezing temperatures for at least half a day beforehand.

You don't have to worry about pipes freezing if the temperature is just below 32 degrees, as it's the prolonged exposure to freezing temperatures that increases the likelihood of pipe freezing.

Pipes can freeze at 32 degrees or below, but the temperature will need to be well below 32 for at least that length of time before pipe freezing becomes likely.

The Science Behind

Credit: youtube.com, Bursting Water Pipe

Frozen pipes are a common winter problem, and understanding the science behind them can help you prevent or fix the issue.

Water expands by approximately 9% as it freezes into ice.

The obstruction caused by frozen water in a pipe can create increased pressure, which can cause the pipe to bulge and eventually crack or burst.

Frozen water doesn't always cause pipes to crack or burst, but leaving it to thaw on its own can significantly increase the risk of this happening.

The expansion of frozen water is not the primary cause of pipe damage, it's the pressure generated by the obstruction that's the main concern.

Preventing Freezing

Keeping your home warm is key to preventing pipes from freezing. Setting your thermostat above 50 degrees Fahrenheit should provide enough heat to keep the pipes warm.

Locate pipes at risk of freezing and add insulation to them. High-risk zones include the garage, crawl space, attic, unfinished basement, and other unheated or poorly insulated areas indoors.

Credit: youtube.com, 10 PROVEN Methods to Keep Your Water Pipes from Freezing this Winter

Outdoor plumbing should also be protected, if possible. Disconnect garden hoses and drain your sprinkler system to prevent water from getting trapped and freezing.

Seal cracks and other holes in your exterior walls to prevent drafts from chilling the pipes in your walls.

Opening the cabinet doors below kitchen and bathroom sinks can help heated air reach the pipes inside. This is especially important if you're worried that heated air isn't reaching the pipes.

Here are some additional tips to prevent pipes from freezing:

  • Let a few faucets trickle to prevent ice from forming in the pipes.
  • Set your thermostat no lower than 13 degrees, even if you're out of town.
  • Wrap exposed pipes with electrical heat tape or insulate them with foam insulation.
  • Keep the garage door closed if pipes run through this space.
  • Run a space heater in unconditioned spaces where pipes are located to keep the temperature above 5 degrees.

By following these tips, you can significantly reduce the risk of your pipes freezing and bursting.

Identifying and Thawing Frozen Pipes

Frozen pipes can be a real emergency, but if you know what to look for, you can catch them before they cause major damage. Look for signs like water droplets on the ceiling or walls, or a slow drip from a faucet.

If you suspect a frozen pipe, don't panic. Open the affected faucet all the way to allow pressure to escape as the ice blockage melts. This will also let you know if your thawing method works.

Credit: youtube.com, Preventing and resolving frozen pipes in your home. Thawing frozen water lines in extreme cold.

To thaw a frozen pipe, you can use a hair dryer or hot water, but be careful not to use an open flame. If the pipe is exposed, you can apply heat directly to the frozen area using a variety of methods, including electric heating pads, infrared lamps, or towels soaked in hot water.

Some common DIY methods for thawing exposed pipes include using a space heater, electric heating tape, or a hair dryer. Just remember to keep the affected faucet open to allow pressure to escape as the ice melts.

If you're not comfortable thawing the pipe yourself, it's always best to call a plumber. But if you do decide to try it, make sure to identify the frozen pipe accurately and apply heat slowly and carefully to avoid causing further damage.

Here are some common DIY methods for thawing exposed pipes:

  • Hair dryer
  • Infrared heating lamp
  • Portable electric space heater
  • Electric heating pad or blanket
  • Electric pipe heat tape
  • Towels soaked in hot water

Dealing with Frozen Pipes

Frozen pipes can burst and cause extensive damage, so it's essential to thaw them as soon as possible. Thawing a frozen pipe can be done by wrapping the affected area in thermostatically controlled heat tape, or by applying heat around the pipe using a space heater, hair dryer, or hot water.

Credit: youtube.com, Prevent Frozen Pipes - 5 Easy DIY Tips

If you can't thaw the pipe, call for plumbing repair service right away. Frozen pipes don't always burst, but leaving them to thaw on their own increases the risk of cracking or bursting due to the expansion of frozen water and increased pressure.

Here are some steps to take when dealing with frozen pipes:

  • Shut off your water supply to relieve pressure inside the pipes.
  • Open the faucets connected to the frozen pipe to give water somewhere to go once it thaws.
  • Attempt to thaw the pipe using a hair dryer, space heater, or other heat source.

Turning up your thermostat can also help thaw frost off of pipes, but it's best to use this solution straight away after detecting frozen pipes.

Should I Turn Off Water?

Turning off your main water supply is crucial when dealing with frozen pipes. This helps relieve pressure inside the pipes and reduces the chance of them cracking or bursting due to ice expansion.

Frozen water expands by approximately 9% as it crystallizes into ice, which can cause pipes to bulge and eventually crack or burst. This is why shutting off the water supply is essential to prevent further damage.

Credit: youtube.com, Should I turn off water if pipes are frozen?

You can usually find your main water supply valve in a basement, crawl space, or under a sink. If you're not sure where it is, call your utility company's emergency line for assistance.

To turn off the water supply, locate the main valve and turn it clockwise. This will shut off the water to your entire house.

Here's a quick checklist to help you remember what to do:

  1. Shut off the main water supply valve.
  2. Check your pipes for any visible damage.
  3. Call a plumber if you see cracks or holes.

By following these steps, you can help prevent costly repairs and keep your pipes safe from damage.

Dealing with Freezes

Frozen pipes don't always burst, but leaving them to thaw on their own increases the risk of cracking or bursting. This risk arises from the expansion of frozen water and the pressure it generates.

It's essential to thaw frozen pipes as soon as possible to prevent extensive damage to your property. You can thaw a frozen pipe by wrapping the troubled area in thermostatically controlled heat tape or applying heat around the pipe using a space heater, hair dryer, or hot water.

Credit: youtube.com, Dealing with frozen pipes during dangerous cold

The temperature at which pipes freeze depends on the location. In Canada, pipes in the home will generally be prone to freezing when temperatures drop to -4°C or below, while outdoor pipes can freeze at around -20°C.

It takes approximately 6 hours of exposure to cold temperatures for pipes to freeze, but this timeframe can be affected by wind chill, insulation quality, and the specific location of the pipes.

To prevent pipes from freezing, you can take several precautions. Keep your heating system running, even if you leave for a period of time, and locate pipes at risk of freezing and add insulation to them. You can also seal cracks and other holes in your exterior walls to prevent drafts from chilling the pipes.

Here are some tips to help you prevent pipes from freezing:

  • Keep your heating system running, even if you leave for a period of time.
  • Locate pipes at risk of freezing and add insulation to them.
  • Seal cracks and other holes in your exterior walls.
  • Open the cabinet doors below kitchen and bathroom sinks to allow heated air to reach the pipes.
  • Turn your faucets on just enough to slowly drip.

Sanitary Sewer Freeze-Up

Sanitary sewer freeze-up can be a real concern during harsh winter months. Make sure the roof vent is not covered with snow or otherwise blocked, as this can cause the sewer drain to slow down and prevent warmer air from venting up the house line.

Credit: youtube.com, Prevent Frozen Drain Lines: A Proper Sewer Access Pit

During the winter of 2013-2014, the City of Bloomington experienced a historic maximum of frozen water service connections, affecting about 214 pipes out of 25,300 accounts, which is less than one percent of all homes in their service area.

The average chance of a property's water line freezing is less than one percent. However, if you have been contacted by the City of Bloomington, or if your pipes have already frozen once this season, it's recommended to run your water.

If you choose to run your water continuously, do it at a rate of one gallon every four minutes, which is about the stream width of a pencil. This will help prevent overflow or flooding, and keep your drain clear of debris.

All costs associated with thawing pipes and keeping them from re-freezing are the responsibility of property owners. If you need assistance, you can contact the City of Bloomington Utilities Division at 952-563-8777, or their 24-hour emergency line at 952-563-4905.

House Navigation

Credit: youtube.com, How To Navigate Frozen Pipes!

Navigating your home to locate frozen pipes can be a challenge. One of the biggest issues for Ontario homeowners is identifying where frozen pipes are located within the house.

You can narrow down the affected areas with some patience and working knowledge of your home's plumbing. This will help you identify the problem areas faster.

Frozen pipes are often located in areas with poor insulation, such as unheated basements, crawl spaces, or attics. These areas can be prone to freezing temperatures.

If you suspect a frozen pipe, try these steps to zero in on the affected area.

When to Call a Plumber

If you're dealing with frozen pipes, it's essential to know when to call a professional plumber. You should only try to thaw frozen pipes on your own as a last resort, or while waiting for a plumber to arrive.

If you can't find the frozen pipe, it's best to call a professional. They'll have the expertise and specialized tools to fix the problem quickly and safely.

Credit: youtube.com, Plumbers Treating Frozen Pipes

Don't risk your safety by attempting to fix frozen pipes if you're not confident in your handyman skills. It's better to err on the side of caution and call a reliable plumbing service.

If you live in an older home and suspect that your aging pipes won't make it, it's time to call a plumber. They can advise on proper pipe insulation or upgrades to help you prevent future problems.

Here are some signs you need to call a professional plumber:

  • You can’t find the frozen pipe.
  • You’re not confident in your handyman skills and unsure how to unfreeze the pipes safely.
  • You suspect a bigger problem—let’s say, you live in an older home and worry your aging pipes won’t make it.

Frequently Asked Questions

How long can pipes stay frozen without bursting?

Pipes can stay frozen for 1-3 days before bursting, depending on the temperature. Prolonged exposure to freezing temperatures increases the risk of pipes bursting.

Is it better to let frozen pipes thaw on their own?

No, it's not recommended to let frozen pipes thaw on their own, as they can burst and cause significant water damage. Instead, take proactive steps to thaw and repair them to prevent costly and messy consequences.

Lou Tarchiani

Senior Writer

Lou Tarchiani is a passionate writer, avid traveler, and animal lover. She has a diverse background, having worked in fields ranging from marketing to education. Her travels have taken her to over 20 countries, where she has immersed herself in local cultures and gained unique perspectives on the world.

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