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How to Prevent and Thaw Frozen Pipes to avoid Costly Winter Pipe Bursts
By: NSP PlumbingÂ
December 15, 2025
How to prevent frozen pipes is a question we at NSP Plumbing have been asked year after year. Trusted by West Michigan homeowners since 2021, NSP Plumbing is a 5‑star rated, BBB‑accredited company with hands‑on experience diagnosing and repairing frozen and burst pipes during Michigan winters. Our licensed plumbers see this issue every year—and know how to prevent small freezing problems from turning into major water damage.
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Frozen pipes are the most common and costly plumbing issue homeowners face during winter. When water freezes, it expands—putting immense pressure on your pipes. That pressure can cause cracks, splits, or full pipe bursts that lead to serious water damage.
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Below, we answer the most common questions homeowners ask about frozen pipes and explain how to protect your plumbing before temperatures drop.
How Do I Keep My Pipes From Freezing?
Preventing frozen pipes starts with preparation and a few proactive adjustments around your home. One of the most important steps is insulating exposed pipes, especially those located in basements, crawl spaces, attics, garages, and exterior walls. Sealing air leaks around pipe penetrations, foundation gaps, and exterior vents also helps keep cold air from reaching your plumbing.
Before winter sets in, outdoor hoses should be disconnected and drained, and exterior water lines shut off if possible. Inside the home, keeping cabinet doors open under sinks allows warm air to circulate around pipes, particularly during extreme cold. Maintaining consistent indoor heat—even when you’re away—plays a major role in reducing the risk of freezing and avoiding costly winter plumbing emergencies.
What Temperature Causes Pipes to Freeze?
Pipes can begin to freeze when temperatures drop to 32°F, but most freezing issues occur when outdoor temperatures fall to 20°F or below for several hours. Wind chill, poor insulation, and pipe location can cause freezing even at higher temperatures.
Should I Drip My Faucets to prevent frozen pipes?
Yes—dripping faucets can help prevent freezing during extreme cold.
A slow, steady drip relieves pressure in the system and keeps water moving, which makes freezing less likely. Focus on faucets connected to exterior walls or unheated areas. While dripping won’t fix insulation issues, it’s an effective short-term safeguard during cold snaps.
Which Pipes Are Most Likely to Freeze?
Certain pipes are far more vulnerable to freezing during winter, particularly those exposed to cold air with little insulation. Pipes running through exterior walls are a common problem area, as are plumbing lines located in unheated basements, crawl spaces, garages, and attics. Outdoor spigots and hose bibs are especially susceptible because they’re directly exposed to freezing temperatures.
Pipes located near drafty windows, foundation vents, or poorly sealed openings also carry a higher risk. If a pipe is outside the main heated envelope of the home, it should be considered a priority for insulation or additional protection.
Can Pipes Freeze Even If the Heat Is On?
Yes. Pipes can still freeze even when your home is heated—especially if:
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The pipe is located in an unheated space
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Cabinets or access panels block warm air
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There is poor insulation or air leakage
Keeping heat on is essential, but it’s not a guarantee unless pipes are properly protected.
How Long Does It Take for a Pipe to Freeze?
A pipe can freeze in as little as 6 hours under the right conditions. Extremely cold temperatures, high wind, and exposed piping can speed up the process significantly.
Once frozen, pressure builds quickly—raising the risk of a burst pipe.
What Do I Do If My Pipes Freeze but Haven’t Burst?
If you suspect a frozen pipe:
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Turn on the affected faucet to relieve pressure.
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Apply gentle heat using a hair dryer, heating pad, or warm towels.
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Never use open flames, such as a torch or space heater.
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Work from the faucet toward the frozen section to allow melting water to escape.
- Call an emergency plumber to make sure you pipe wont freeze again
If you can’t locate the frozen area or water flow doesn’t return, it’s time to call a professional plumber.
Can Frozen Pipes Burst After They Thaw?
Yes—and this is a common and dangerous misconception.
Pipes often burst during thawing, not while frozen. As ice melts, pressure is released and cracks formed during freezing can suddenly leak or rupture. That’s why many homeowners don’t discover damage until water starts flowing again.
If your pipes have frozen, it’s important to inspect them carefully or have a plumber check for hidden damage.
Don’t Wait for a Winter Plumbing Emergency
If you’re dealing with frozen pipes—or want to protect your plumbing before the next cold snap—NSP Plumbing is here to help. Our licensed plumbers are available 24/7 and have hands-on experience handling frozen pipes, burst pipes, and winter plumbing emergencies throughout West Michigan.
Schedule service with NSP Plumbing today to get fast, professional help and peace of mind when temperatures drop.
We’re Here for Your Unique Plumbing Needs
NSP Plumbing offers a full range of residential and commercial plumbing services—available 24/7. From drain cleaning to water heater installs, we’ve got you covered.
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