How to Prevent Frozen Pipes in the Lehigh Valley | Action Plumbing

Practical, cold-climate steps Lehigh Valley homeowners can take to protect pipes before a hard freeze, and how to tell when it's time to call a licensed plumber.

A plumber working on exposed copper pipes to prepare them for winter
Photo: Action Plumbing

How to Prevent Frozen Pipes This Winter in the Lehigh Valley

Every winter, we get calls from homeowners and business owners across Allentown, Bethlehem, Easton, and Northampton who wake up to a faucet that won't run or, worse, water coming through a ceiling. Knowing how to prevent frozen pipes before the cold sets in is a lot cheaper and easier than dealing with a burst pipe after the fact. Here's what we tell our neighbors every year, based on three decades of working on homes and buildings throughout this region.

Why Pipes Freeze in Our Climate

The Lehigh Valley gets a real winter, with stretches of nights well below freezing. Pipes freeze when water inside them sits still long enough to drop to 32 degrees or lower, usually in sections of plumbing that run through unheated or poorly insulated spaces. Once ice forms, it expands and can crack copper, PVC, or even galvanized pipe. The break often doesn't show up until the ice thaws and water starts flowing again, which is why so many pipe failures seem to appear "out of nowhere" after a cold snap breaks.

The pipes most at risk in local homes are usually:

  • Pipes running along exterior walls, especially on the north side of the house
  • Supply lines in unheated crawl spaces, basements, and attics
  • Pipes in an attached garage
  • Outdoor spigots and the pipe just behind them
  • Plumbing in vacation homes, rentals, or any property that sits unoccupied for stretches

Practical Steps for Burst Pipe Prevention in PA

You don't need to overhaul your plumbing to meaningfully cut your risk. A few basic habits make a real difference:

  1. Insulate exposed pipes. Foam pipe sleeves are inexpensive and easy to install on any pipe you can reach in a basement, crawl space, or garage. Pay special attention to pipes near outside walls or vents.
  2. Seal drafts near plumbing. Cold air sneaking in through a gap in the foundation, a dryer vent, or an unsealed crawl space hatch can chill a nearby pipe fast. Caulk or weatherstrip these openings before the first hard freeze.
  3. Disconnect and drain outdoor hoses. Shut off the water to exterior spigots if you have an interior shutoff valve, then drain the hose bib itself so no standing water is left to freeze and crack it.
  4. Keep garage doors closed. If any water lines run through or near your garage, keep the door shut as much as possible on cold days.
  5. Let a faucet drip during hard freezes. On nights when the forecast calls for a deep freeze, a slow drip from a faucet connected to a vulnerable pipe keeps water moving and relieves pressure.
  6. Keep cabinet doors open under sinks on exterior walls. This lets warmer household air circulate around the plumbing underneath your kitchen or bathroom sink.
  7. Maintain consistent heat. Don't let your thermostat drop too low overnight, even in rooms you don't use often. A consistent indoor temperature protects pipes you can't see.

If your home has had freezing issues before, or you're not sure where your vulnerable pipes run, it's worth having a licensed plumber take a look at your system before winter gets serious. We can identify weak points and recommend fixes specific to your house.

Winterize Plumbing in Allentown Homes Before You Travel

If you're heading south for part of the winter or own a second property in the area, winterizing your plumbing matters even more, since there's no one home to notice a dripping faucet or a chilly room. Before you leave:

  • Set your thermostat no lower than 55 degrees, even while you're away
  • Ask a neighbor or family member to check the house periodically
  • Consider shutting off the main water supply and draining the system if the home will sit empty for an extended period
  • Make sure any backup heat source, like a furnace or heat pump, is in good working order before you go

A furnace or heating system that's struggling to keep up is one of the most common hidden causes of frozen pipes. If your heating and air system hasn't been checked recently, a quick inspection before winter can catch a weak furnace or failing heat pump before it leaves part of your house too cold to protect the plumbing.

When a Frozen or Burst Pipe Needs an Emergency Plumber

Even with good prevention, freezes happen. Here's how to tell when it's time to stop and call a professional rather than handle it yourself:

  • No water from a faucet, but no visible leak. This usually means a frozen section somewhere in the line. Shut off the water to that fixture and call us before attempting to thaw it, especially if the frozen section is behind a wall or ceiling.
  • Water pooling, dripping from a ceiling, or running where it shouldn't. This is a sign of a burst or cracked pipe. Shut off your main water valve immediately to limit damage.
  • A hissing or dripping sound inside a wall. Don't wait for a visible leak. Call a licensed plumber right away.
  • Any smell of gas, exposed wiring near water, or signs of structural damage. Stop immediately and call a professional. These situations go beyond a simple plumbing fix and need an expert on site.

Frozen and burst pipes rarely wait for business hours, which is why we offer round-the-clock emergency service across the Lehigh Valley and Phillipsburg, New Jersey. If you're dealing with a backed-up drain or suspect a hidden leak is affecting your sewer line, our drain and sewer cleaning services include camera inspection to find the problem without tearing up your property guessing.

Closing: We're Ready When the Temperature Drops

Preventing frozen pipes comes down to a handful of simple habits, done consistently through the cold months. But when a pipe does freeze or burst, speed matters, and that's exactly where our licensed and certified master plumbers come in. We've spent three decades handling winter plumbing emergencies for homeowners and businesses throughout Allentown, Bethlehem, Easton, Northampton, and Phillipsburg, NJ, and we're ready around the clock.

Call Action Plumbing Heating & HVAC at (610) 252-1256 or contact our team to schedule a winter plumbing check or get help with a frozen or burst pipe right now.

Frequently asked questions

What temperature causes pipes to freeze in the Lehigh Valley?

Pipes can start to freeze when outdoor temperatures drop into the low 20s Fahrenheit or lower for several hours, especially overnight. Pipes running through unheated spaces like crawl spaces, garages, or exterior walls are at the highest risk because they lose heat faster than pipes inside conditioned living space.

How do I know if a pipe in my house is frozen?

Common signs include a faucet with little or no water flow, frost visible on an exposed section of pipe, or unusual clanging or whistling sounds when you turn on a tap. If you notice any of these, shut off the water to that fixture and call a licensed plumber before trying to thaw it yourself.

Should I let faucets drip to prevent frozen pipes?

Yes, a slow, steady drip from faucets fed by exposed or vulnerable pipes relieves pressure buildup and keeps water moving, which lowers the chance of freezing. Focus this on faucets connected to pipes along exterior walls, in crawl spaces, or in an attached garage during a hard freeze.

What should I do if a pipe bursts in my home?

Shut off your main water valve immediately to stop the flow, then turn off electricity to any affected area if water is near outlets or wiring. Do not attempt repairs yourself if you smell gas or see exposed wiring. Call an emergency plumber right away to limit water damage and get the line repaired safely.

Can I thaw a frozen pipe myself?

You can gently warm an exposed, accessible pipe with a hair dryer on low heat or warm towels, moving from the faucet end toward the blockage. Never use an open flame, blowtorch, or space heater unattended. If the pipe is hidden in a wall or ceiling, or you're not confident, stop and call a licensed plumber.

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