Frozen Pipes: What Causes Pipes to Freeze and How to Unfreeze Them Safely

Frozen pipes are more than a winter headache, they’re a common cause of sudden water damage when temperatures drop fast. During cold snaps, overnight freezes, or extended cold weather, water inside pipes can freeze, expand, and place intense pressure on the pipe walls, which often leads to cracks or burst pipes once thawing begins.

At Standard Plumbing, Heating & Air Conditioning, we’ve helped local homeowners deal with frozen and burst pipes for nearly 100 years. In this guide, we’ll explain what causes pipes to freeze, the warning signs to watch for, how to safely unfreeze them, and when calling a plumber is the smartest move, especially for homes with pipes in unheated spaces like crawl spaces, garages, basements, or exterior walls during Kansas winters.

What Causes Pipes to Freeze

Pipes freeze when cold air reaches the water inside faster than heat can protect it. The most common causes include:

• Sudden drops in outdoor temperature, especially overnight
• Poor or missing insulation around exposed plumbing
• Pipes in exterior walls, crawl spaces, garages, or basements
• Low thermostat settings or turning the heat off while away
• Little or no water flow during long cold periods

Homes with unheated or rarely used areas are especially vulnerable when temperatures stay below freezing for several hours.

Why Frozen Pipes Are a Big Problem

When water freezes, it expands and creates intense pressure inside the pipe, often exceeding what the material can handle. This leads to several serious risks:

• Pipes commonly burst after thawing, not while frozen
• Water damage to walls, floors, ceilings, and personal belongings
• Hidden leaks that may go unnoticed until major damage appears
• Higher repair costs compared to addressing freezing early

Catching frozen pipes early can mean the difference between a simple fix and extensive water damage repairs.

Signs Your Pipes May Be Frozen

Frozen pipes don’t always announce themselves clearly, especially during overnight freezes. Common warning signs include:

• Little or no water coming from one or more faucets
• Frost or condensation on exposed pipe sections
• Unusual odours coming from drains or faucets
• Visible bulging or swelling along the pipe

If you notice any of these signs during cold weather, act quickly to reduce the risk of a burst pipe.

How to Safely Unfreeze Frozen Pipes

Unfreezing pipes should be done slowly and carefully to avoid sudden pressure buildup. Follow these safe steps:

• Keep the affected faucet open to relieve pressure as the ice melts
• Apply gentle heat using a hair dryer, heating pad, or warm towels
• Start heating near the faucet and work your way toward the frozen section
• Open cabinet doors to allow warm indoor air to circulate around pipes

What not to do:

• Do not use open flames, torches, or space heaters
• Do not force water pressure or close the faucet while thawing
• Do not ignore frozen pipes, even if water begins flowing again, as hidden damage may still exist

What to Do If a Pipe Bursts

If a pipe bursts, act immediately to limit water damage. Shut off the main water supply as soon as possible, turn off electricity in affected areas if there is standing water, and contact a professional plumber right away, as temporary or DIY fixes often make the damage worse.

How to Prevent Pipes From Freezing

Taking simple preventive steps can significantly reduce the risk of frozen pipes during cold weather:

• Keep your thermostat set to a consistent temperature, even when away
• Insulate exposed pipes, especially in crawl spaces and basements
• Allow faucets to drip slightly during extreme cold
• Seal gaps or drafts near plumbing lines and exterior walls
• Disconnect and drain outdoor hoses before temperatures drop

When to Call a Professional Plumber

Professional help is essential when frozen pipes can’t be safely handled on your own. If you cannot locate the frozen section, if pipes are frozen behind walls or under the home, if water pressure does not return to normal, or if you suspect a pipe has cracked or burst, contacting a licensed plumber can prevent further damage and costly repairs.

Why Homeowners Trust Standard Plumbing, Heating & Air Conditioning

Homeowners trust Standard Plumbing, Heating & Air Conditioning because experience matters when winter problems hit hard. Serving the Manhattan area since 1923, our team brings nearly a century of local knowledge, trained technicians equipped to handle frozen and burst pipe emergencies, and a fast response when cold weather puts homes at risk, all backed by clear explanations and upfront service so there are no surprises.

Protect Your Home Before Winter Damage Starts

Frozen pipes rarely fix themselves, and waiting often turns a small issue into expensive water damage. Taking early action, staying ahead with prevention, and reaching out for professional help at the first sign of trouble can protect your home, your comfort, and your peace of mind before winter damage escalates.

If you’re dealing with frozen pipes or want to prevent problems before the next cold snap, Standard Plumbing, Heating & Air Conditioning is here to help. Contact our team to schedule service or get expert advice, and let experienced professionals protect your home before winter causes costly damage.