How to Unfreeze a Frozen Pipe in Wake County, NC

Why mild Wake County winters still cause frozen pipes

We do not spend the whole winter in a deep freeze around Raleigh, Cary, Apex, Holly Springs, and Fuquay-Varina. That makes it easy to put winter preparation on the “I'll get to it” list. Then an Arctic front shows up and moves that list to the top of your evening.

For a real example, the National Weather Service recorded 10°F in Raleigh on December 24, 2022. That cold spell brought no accumulating snow to central North Carolina. A yard without snow is not proof your plumbing is safe.

We saw another reminder during a cold snap in 2025. In ARC's experience, one particularly cold night resulted in plenty of frozen-pipe problems locally. It was not as bad as the 2022 event, but it was enough to cause real trouble. Your plumbing does not need a week of winter weather to have a bad night.

Winter weather varies from year to year, so prepare for the approaching cold spell instead of relying on how mild the season has felt. Watch the actual temperature, how long it will stay below freezing, and whether your home will have dependable heat.

Wind matters, but the “feels like” number is not your pipe's temperature. Drafts can make exposed pipes lose heat faster; wind chill alone does not cool them below the surrounding air temperature. See the National Weather Service explanation of wind chill.

Where we usually find freeze problems locally

On ARC Plumbing's local service calls, three places keep coming up:

• Unsealed crawl spaces. Piping exposed to cold outside air is a recurring trouble spot.
• Exterior hose bibbs. Those are your outdoor faucets, and they are easy to overlook when preparing the house.
• Exterior-mounted tankless water heaters without recirculation pumps. We encounter freeze problems at these installations, so the heater and its exposed connections deserve attention before severe cold.

That last point needs some explanation: a recirculation pump is not a guarantee against freezing. Protection depends on the specific heater, installation, controls, and operating conditions. Built-in freeze protection may protect the unit while leaving external pipes and valves vulnerable, and it depends on required utilities remaining available. Rinnai explains this distinction in its cold-weather guidance.

Follow your model's manual. Do not wrap the heater cabinet or obstruct its intake or exhaust. If your outdoor unit has frozen before, ask us to evaluate the installation and its protection plan. See our tankless water heater services.

Is the pipe frozen—or is something else wrong?

Check whether the problem affects one fixture or the whole house, and whether hot water, cold water, or both are affected. Look for a utility outage notice if the entire home has lost water. Low flow alone does not prove a freeze.

Safely accessible pipes in unheated crawl spaces, garages, and exterior-wall cabinets deserve attention during a cold snap. Look for frost, visible damage, or leaking water. Do not crawl into a wet or unsafe space to investigate.

A frozen pipe does not always burst. But an ice blockage can hide a break until the ice melts. “It isn't leaking yet” is a reason to stay alert, not an all-clear.

How to thaw an accessible frozen pipe

Only try gentle thawing when the pipe is easy to reach, appears intact, and the area is dry and safe. Locate the main shutoff first. If you suspect a split or cannot monitor the pipe, shut off the water and call a plumber.

1. Open the affected faucet. Leave it open while thawing so melting water has a way out.
2. Apply gentle warmth. Use towels soaked in hot water or a hair dryer in a dry area, following its safety instructions. While in a pinch an electric heating pad can be used, it is best to keep electrical equipment away from water.
3. Stay with it. Never leave a heating device unattended. If water starts leaking, stop and shut off the supply safely.
4. Check after flow returns. Watch the accessible pipe and nearby areas for leaks. Restored flow does not establish that the pipe is undamaged.

Never use a torch, propane heater, or open flame. If the frozen area is hidden, inaccessible, or will not thaw, call a licensed plumber. These basic thawing precautions follow American Red Cross guidance.

What to do if the pipe bursts

If we catch it too late and a pipe bursts, don't panic. Stop the main water supply at the main shutoff if safe, keep people away from electrical hazards, and call for repair. Take photos once the area is safe, and contact your insurer if you need to report damage. Plumbing repair stops the source; soaked building materials may also need professional drying.

Do not turn the water back on just to see how bad the leak is. An indoor water feature was probably not in the renovation budget.

For damage to the supply piping, learn about our water line repair and replacement services. For an active emergency, call us directly.

Before the next freeze: a practical checklist

Do this while the weather is comfortable. Shopping for pipe insulation is less enjoyable when everyone in Wake County has had the same idea.

• Find and label the main shutoff. Make sure another adult in the household knows where it is.
• Disconnect garden hoses. Protect outdoor faucets in the first place and winterize them according to their design. A cover is an extra layer of protection, not a guarantee.
• Address exposed piping and cold drafts. Insulation slows heat loss; it does not produce heat. Have recurring freeze points evaluated instead of adding another temporary patch each winter.
• Keep indoor heat steady. Open sink cabinets to let room warmth reach pipes, moving cleaners out of children's and pets' reach.
• Consider a small drip at a vulnerable faucet during severe cold. This can help protect the pipe serving that faucet; it does not protect every line. Follow local utility guidance.
• Plan for travel and power outages. Arrange for someone to check the house. If heat cannot be maintained, ask a plumber about proper winterization.

NC State Extension's frozen-pipe guidance is another useful preparation resource.

If the same pipe keeps freezing, fix the underlying problem

A repeat freeze deserves a closer look at pipe location, insulation, and exposure to cold air. The right correction may involve protecting the existing line or relocating a vulnerable section. If heat cable is appropriate, it must be approved for the pipe and installed exactly as its manufacturer requires. Heat tape may be an options as well.

You should not need an annual appointment with your kitchen cabinet and a hair dryer.