Preventing burst pipes in winter comes down to keeping water moving, maintaining warm temperatures around your plumbing, and removing external pressure from ice. The most actionable steps include setting your thermostat to at least 55∘ F, letting faucets drip a slow stream during freezing weather, and insulating your exposed pipes.
Common Misconceptions About Frozen Pipes. Frozen and burst pipes pose a major risk during the winter months—especially if your home is unoccupied throughout the season. And, as recent weather events have shown, residing in a warmer climate alone does not make you immune to this risk.
When a cold snap hovers around or below 32 degrees Fahrenheit for a couple days in a row it's time to let at least one faucet drip. Pay close attention to water pipes that are in attics, garages, basements or crawl spaces because temperatures in these unheated interior spaces usually mimic outdoor temperatures.
While it may be tempting to save a few bucks on your heating bill at times, a cold snap is not the time to set back the thermostat if you have pipes that are at risk of freezing. Leave the heat on if you plan to be away during cold weather. Set the thermostat to a temperature no lower than 55° F.
At 32°F, insulated pipes can freeze in about 12 hours and about six hours between 20 to 32°F. The timeframe for freezing becomes even shorter when your pipes are uninsulated. These are approximate figures, as other factors like wind exposure, pipe material, and water flow can also influence the actual freezing time.
A slow, steady drip can help prevent frozen (and burst) pipes during cold weather.
How quickly do pipes freeze? Pipes can freeze in as little as six to eight hours, meaning they can freeze overnight. If the outside temperature is below 32F degrees and your pipes are unprotected, your chances for a frozen pipe increase.
Pipes that freeze most frequently are: Pipes that are exposed to severe cold, like outdoor hose bibs, swimming pool supply lines, and water sprinkler lines.
It is OK to set your thermostat to 74°F if you're happy with that temperature. However, many people find temperatures between 68°F–72°F more comfortable for everyday living. If efficiency is a concern, you might want to consider lowering the temperature by a few degrees to save energy.
During Very Cold Weather, Take Preventive Action
Running water through the pipe - even at a trickle - helps prevent pipes from freezing because the temperature of the water running through them is above freezing.
Like most myths, there is certainly a component that is true. Dripping faucets does help prevent frozen pipes, but you don't need to drip every faucet in your house.
Dripping water from a faucet is a well-known example of chaotic dynamical systems easily seen in daily life. O.E. Rössler introduced the dynamics of a leaky faucet as a model of a nonlinear chaotic system in 1977. He suggested that the formation of water drops at the nipple of a faucet could exhibit chaotic behavior.
One leaky faucet that goes unchecked for a whole year can waste about 34.7 gallons of water. Slow drips can accumulate to $1 or less per month but fast drips can waste 11 gallons a day and can add up to $6 extra to your bill a month.
The general rule is to allow one faucet to drip. It should be the one farthest from where water enters your home. This strategy will make sure that water moves through the entire plumbing system. Thus, it will reduce the risk of freezing.
A hard freeze occurs when ambient temperatures drop to 28∘F28 raised to the composed with power F28∘F (-2.2∘Cnegative 2.2 raised to the composed with power C−2.2∘C) or colder for at least one to three hours. This sustained extreme cold penetrates deep into the soil, damaging infrastructure and destroying most seasonal vegetation.
Accidental water damage that occurs as a result of a sudden, unexpected occurrence like a burst pipe is often covered by a homeowners insurance policy. In addition, cleaning, repair or replacement of wood flooring, drywall and even furniture due to water damage as a result of a burst pipe typically is covered.
At a constant 32°F (0∘C0 raised to the composed with power cap C0∘𝐶), it typically takes 12 hours or more for water in pipes to freeze, especially if the pipes are insulated. However, the exact timing fluctuates heavily depending on pipe exposure, insulation, and whether they are located in unheated areas like exterior walls.
A constant drip keeps water moving through the pipes, even if it's just a trickle. The key here is movement—frozen water doesn't move, and it's the still water inside the pipe that's most at risk. When water is allowed to flow, even in small amounts, it makes it harder for the water in the pipe to freeze.
Rubbing alcohol does not technically "stop" water from freezing on its own, but it significantly lowers the freezing point of water through a process called freezing point depression.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
The cheapest temperature to keep your house in winter is 68°F (20∘C20 raised to the composed with power C𝟐𝟎∘𝐂) while you are home, and lowering it to 61°F–65°F when you are away or sleeping, according to the Department of Energy. Setting your thermostat back 7°–10°F for 8 hours can save up to 10% a year on heating costs.
While 72 degrees is a popular choice among homeowners, it's actually lower than what's recommended for energy efficiency. The Department of Energy suggests setting your thermostat to 78 degrees during the summer months.
While we know that water freezes at 32 degrees Fahrenheit, keep in mind that indoor pipes are somewhat protected from the extreme outdoor weather. Without a heat source, pipes may take as little as 3 hours to freeze at 20 degrees Fahrenheit or lower.
Here's how to do it right: 💧Turn the cold water taps just enough to drip 💧Focus on faucets along exterior walls 💧Open cabinet doors to let warm air reach pipes 💧Let water drip when temps drop below freezing A little drip now can save a big mess later!
Uninsulated exterior pipes can freeze in under six hours if the temperature is below 20 degrees. It takes at least 12 hours for unprotected pipes to freeze at 32 degrees.