Frozen Pipes: Safe Thawing Before They Burst

A frozen pipe is a burst pipe waiting to happen β€” ice expands and splits the line, then floods when it thaws. The goal: thaw gently, watch for leaks, and know when to call.

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Frozen Pipes β€” illustrated guide

Is this your problem?

  • No water or a trickle from a faucet during freezing weather
  • Frost visible on exposed pipes
  • Strange smells from a faucet (blockage pushing odors back)
  • One section of the home without water while others work

Frozen Pipes? Get a licensed pro on the line now.

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What to do right now

1

Open the faucet

Open the affected faucet slightly. Flowing water β€” even a trickle β€” helps melt ice and gives it somewhere to go.

2

Warm the pipe gently

Hair dryer, heating pad, or warm (not hot) towels on the frozen section, working from the faucet back toward the blockage. Never an open flame or heat gun on high.

3

Check for leaks as it thaws

Watch closely β€” the real danger is a split you can't see until water flows. Have the main shutoff location ready.

4

Know when to stop

If you can't find the frozen section, if it's inside a wall, or if thawing reveals any leak β€” stop and call.

5

Call before it bursts

Call (844) 699-1165. A pro can thaw safely, check for splits, and insulate the vulnerable runs so it doesn't happen again.

Stay safe

  • Never use a blowtorch, open flame, or propane heater on pipes β€” fire risk and you can boil water into steam.
  • Don't pour boiling water on a frozen pipe β€” thermal shock can split it.
  • If a pipe bursts during thawing, shut the main off immediately.
  • Space heaters near pipes are a fire hazard β€” don't leave them unattended.

Mistakes to avoid

  • Doing nothing and 'waiting for the thaw' β€” that's exactly when bursts flood homes.
  • Blasting a heat gun on high β€” uneven heating splits pipes.
  • Forgetting outdoor hose bibs and irrigation lines β€” the most common freeze casualties.
  • Thawing without knowing where the main shutoff is.

What to tell the plumber when you call

Have these answers ready β€” it gets you the right pro faster and a more accurate quote.

  • Which fixtures are affected and the outdoor temperature
  • Where you suspect the freeze is: attic, crawlspace, exterior wall, garage
  • Whether any water is flowing at all
  • The age and material of your pipes if known
  • Whether this has happened before (recurring freezes need insulation fixes)

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Not quite your problem?

Frozen Pipes β€” FAQs

At what temperature do pipes freeze?
Uninsulated pipes in unconditioned spaces can freeze around 20Β°F (-7Β°C), and wind chill on exterior walls makes it worse. Pipes have burst at higher temps when exposed.
Should I drip faucets during a freeze?
Yes β€” a slight drip on faucets served by vulnerable pipes relieves pressure, which is what actually prevents bursts. Also open cabinet doors under sinks on exterior walls.
Can a plumber prevent this next winter?
Yes β€” insulating exposed runs, adding heat tape where appropriate, and sealing drafts around pipe penetrations. Call (844) 699-1165 before the next cold snap.
My pipe thawed β€” am I in the clear?
Not necessarily. Watch the area for days: slow leaks from hairline splits show up late. If your bill climbs or spots appear, call (844) 699-1165.

Frozen Pipes Guides by Metro

Same problem, local context β€” climate, housing, and water conditions that change the advice.

Related guides

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