Frozen pipes are one of the most common and costly winter plumbing problems. When temperatures drop, the water inside your pipes can freeze, expand, and eventually cause pipes to burst—leading to flooding, water damage, and expensive repairs. The good news is that with a few preventive steps, you can protect your home and keep your plumbing system running smoothly all winter long.
This guide highlights the most effective ways to prevent frozen pipes, with practical tips and easy-to-follow solutions that homeowners can apply before and during cold weather.
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How to Prevent Frozen Pipes in Cold Weather
Insulate Exposed Pipes
Properly insulating exposed pipes is one of the most reliable ways to keep them from freezing. Pipes located in unheated spaces—such as basements, attics, crawl spaces, garages, or outdoor areas—are especially vulnerable. Using foam pipe insulation, heat tape, or fiberglass sleeves helps create a protective barrier that keeps the cold out and preserves internal water temperature.
Beyond protection from freezing, insulation also reduces energy usage and improves overall plumbing efficiency. It’s an inexpensive preventive measure that offers long-term benefits and peace of mind throughout the winter months.
Keep Indoor Temperatures Consistent
Maintaining a steady indoor temperature helps prevent cold air from settling in areas where pipes pass through. Even if you’re leaving home, avoid turning your thermostat too low. Keeping the temperature at or above 55°F (13°C) ensures that walls, floors, and hidden areas stay warm enough to protect your plumbing.
If certain parts of the home feel colder—like under sinks or behind cabinets—leave doors open to circulate warm air. This simple habit helps heat reach concealed pipes, reducing the risk of freezing in areas where cold spots tend to form.
Let Faucets Drip During Freezing Temperatures
Allowing faucets to drip slightly during extremely cold nights can help prevent pressure buildup inside your pipes. Moving water is less likely to freeze, and this steady flow relieves pressure that might otherwise cause a pipe to burst if ice does form.
You don’t need to run the faucet at full force—just a slow and steady drip is enough. Focus especially on faucets connected to exposed or poorly insulated pipes, such as those along exterior walls or in basements.
Seal Cracks and Block Drafts
Cold air often enters the home through cracks, gaps, or poorly sealed openings near pipes. Sealing these leaks helps keep warm air inside and cold air out, creating a stable environment for your plumbing. Use caulk, spray foam, or weatherstripping to block gaps around windows, doors, foundation walls, and areas where pipes enter the home.
Drafts can significantly lower temperatures around pipes, especially in older homes. By eliminating these sources of cold air, you not only protect your pipes from freezing but also increase your home’s energy efficiency and lower heating costs.
Disconnect Outdoor Hoses and Shut Off Exterior Faucets
Outdoor plumbing fixtures are highly prone to freezing, especially when hoses are left connected. Water trapped inside hoses and faucets can freeze and expand, sending pressure back into your indoor pipes. Always disconnect hoses, drain them, and store them indoors before temperatures drop.
Additionally, shut off water to exterior faucets using the indoor shutoff valve, then drain any remaining water from the outdoor spigot. If your home has frost-free hose bibs, check them for damage and ensure they are functioning properly. This simple step protects both outdoor and indoor plumbing from freezing conditions.
Install Heat Cables for High-Risk Areas
Heat cables or heating tape are excellent solutions for pipes located in extremely cold or hard-to-insulate areas. These electrical cables wrap around pipes and automatically warm them when temperatures fall. They are especially useful for mobile homes, crawl spaces, and older properties with exposed plumbing.
While installation is usually simple, always follow the manufacturer’s instructions or hire a professional for safety. Once installed, heat cables provide automatic, energy-efficient protection throughout winter, significantly reducing the risk of frozen pipes.
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