What to Do If Your Pipes Freeze in Massachusetts

It is 6 a.m., it was 4°F overnight, and you turn on the kitchen faucet to nothing but a trickle — or a groan and then silence. If you own a home on the North Shore, a frozen pipe is one of those New England winter problems that goes from annoying to expensive in a matter of hours. A single burst pipe can dump hundreds of gallons into your walls and floors.

The good news: if you catch it while the pipe is still frozen (not yet burst), you can often handle the first steps yourself. Here is exactly what to do.

Why pipes freeze in Massachusetts homes

Our older housing stock is a big part of it. Many North Shore homes — especially in places like Salem, Marblehead, and Newburyport — have pipes running through uninsulated crawl spaces, exterior walls, attics, and basements that were never built for modern comfort. When a hard cold snap settles in and the wind comes off the water, those vulnerable runs are the first to freeze. Pipes along an outside wall, under a kitchen sink on an exterior wall, or in an unheated garage are the usual suspects.

Frozen pipe? Do this right now

1. Keep the faucet open. Open the faucet the frozen pipe feeds. As the ice melts, water and steam need somewhere to escape — a closed faucet lets pressure build, which is what actually bursts pipes.
2. Find your main shut-off valve. Locate it now (usually in the basement near where the water line enters). If a pipe has already burst or you are not sure, shut the main off immediately to stop a flood. Knowing where this valve is before an emergency is half the battle.
3. Apply gentle heat to the frozen section. Use a hair dryer, a heating pad wrapped around the pipe, towels soaked in hot water, or a space heater kept a safe distance away. Start near the faucet end and work back toward the cold spot so melting water can drain out.
4. Never use an open flame. No blow torch, propane heater, or open flame — it is a serious fire risk and can damage the pipe. House fires from thawing pipes are a real and preventable tragedy.
5. Open cabinet doors. For pipes under sinks, open the cabinet so household heat reaches them.
6. Check every other faucet. If one pipe froze, others may be close behind. Run a trickle of water through the rest to keep them moving.

When to stop and call a plumber

Call a licensed local plumber right away if: you cannot locate the frozen section, the pipe is behind a finished wall or ceiling, you see any bulging or a crack, water is already leaking, or the pipe simply will not thaw. A burst pipe is a genuine emergency — shut off your main, and get a pro on the phone. Frozen pipes inside walls are especially risky to thaw yourself because you cannot see the damage forming.

How to keep it from happening again

• Insulate exposed pipes in basements, crawl spaces, and along exterior walls with foam pipe sleeves.
• On the coldest nights, let a pencil-thin trickle run from the faucet on your most vulnerable line — moving water resists freezing.
• Keep your heat at a steady temperature day and night during cold snaps, and never below 55°F if you travel.
• Seal drafts near pipe runs, and disconnect and drain outdoor hose bibs before winter.
• If you have pipes that freeze every single year, have a plumber reroute or better-insulate that run — it is cheaper than a burst.

Frequently asked questions

Will a frozen pipe always burst?

No — many frozen pipes thaw without bursting, especially if you open the faucet to relieve pressure and thaw the pipe gently. The danger is pressure building between the ice blockage and a closed faucet, so keeping the tap open is the single most important step.

How much does frozen or burst pipe repair cost in Massachusetts?

A straightforward frozen-pipe thaw or a small accessible repair often runs a few hundred dollars. A burst pipe inside a wall, with water damage, can run well into the thousands once drywall, flooring, and cleanup are included — which is why fast action matters.

Can I use hot water to thaw a frozen pipe?

Yes, towels soaked in hot water wrapped around the pipe are a safe method. Do not pour boiling water directly on a frozen metal pipe, and never use an open flame — sudden temperature changes and fire risk both cause more harm than the freeze.

My pipes froze but nothing burst — do I still need a plumber?

If it thawed easily and there are no leaks, you may be fine. But if the same pipe freezes repeatedly, or it runs through a wall where you cannot inspect it, have a local plumber evaluate it — repeat freezes weaken pipes over time.