Yes. Open the affected faucet first, then apply gentle heat — a hair dryer, heating pad, warm towels, or a space heater at a safe distance — working from the faucet end toward the frozen section. Never use an open flame.
The Safe Method, Step by Step
- Open the faucet the frozen pipe serves. This does two things: it relieves the trapped pressure that actually causes bursts, and it gives meltwater somewhere to go. Do this first.
- Locate the frozen section. Usually along an exterior wall, in a crawlspace, attic, or garage. Frost or condensation on the pipe is a giveaway.
- Apply heat from the faucet end, working toward the blockage. This direction matters — if you heat the middle first, meltwater is trapped between two ice plugs with nowhere to escape.
- Keep heating until full flow returns, then let the water run a few minutes.
- Inspect for cracks. Damage often reveals itself the moment water starts moving. Keep the main shutoff accessible while you work.
Safe Heat Sources
Hair dryer on a low or medium setting. Electric heating pad wrapped around the pipe. Towels soaked in hot water. A space heater positioned a safe distance away with nothing flammable nearby. Heat tape, if it is UL-listed and installed per instructions.
Never Use
- Propane torches or any open flame. This is the leading cause of house fires during cold snaps, and it can flash trapped water to steam and rupture the pipe violently.
- Kerosene or propane space heaters indoors, which produce carbon monoxide.
- Boiling water poured on pipe — thermal shock can crack it.
- Unattended heat sources of any kind.
When to Stop and Call
If you cannot locate the frozen section, if it is inside a wall or under the slab, if the pipe is visibly bulging, or if flow does not return after reasonable effort. A pipe frozen inside a wall usually needs a professional — and if it has already cracked, thawing it yourself just starts the flood.
Afterward
Address why it froze — insulation, air sealing, or heat in that space — or it will happen again next cold snap.
