As the chill of winter settles over Chicago, homeowners and property managers must take extra precautions to avoid one of the season’s most costly disasters: burst pipes. With sub-zero temperatures not uncommon in the Windy City, pipe winterization is a crucial maintenance task that can save you thousands of dollars in water damage and repairs.

Understanding how to prevent burst pipes starts with recognizing how freezing temperatures affect your plumbing. When water freezes, it expands — and this pressure buildup can cause pipes to crack or burst, particularly in uninsulated or exposed areas. Frozen pipes don’t just stop the flow of water; they can also flood your home when the ice thaws and leaks begin.

Fortunately, there are proactive steps you can take to prepare pipes for winter and protect your plumbing system. Whether you’re a homeowner, renter, or manage multiple properties, taking action now — ideally before temperatures dip below 32°F — is the best way to prevent emergencies.

8 Ways to Prepare Your Pipes for Winter

Here’s your comprehensive pipe winterization checklist to get your home or building ready for Chicago’s cold months:

1. Insulate pipes in unheated areas: Use pipe insulation sleeves or foam to cover exposed pipes in areas like basements, crawl spaces, attics, and garages. This is one of the most effective ways to prevent pipes from freezing.
2. Disconnect and store garden hoses: Drain and remove all garden hoses, and shut off the valve to outdoor spigots. Install insulated faucet covers to protect exterior taps from freezing.
3. Maintain a consistent thermostat temperature: Keep your thermostat set to at least 55°F, even when you’re not home. Sudden temperature drops can cause pipes to freeze fast.
4. Seal cracks and gaps: Use caulk or spray foam to seal openings where cold air can enter around pipes — such as near windows, doors, and where pipes pass through walls.
5. Keep a trickle of water flowing: When temps drop very low, let running water drip from faucets served by exposed pipes. A slow trickle keeps water moving and reduces the chance of freezing.
6. Check your water heater: Ensure your water heater is working efficiently and is set to at least 120°F. 
7. Insulate crawl spaces: Install vapor barriers and insulation in crawl spaces to help maintain above-freezing temperatures and protect plumbing lines.
8. Know where your main water shut-off valve is: In case of a frozen or burst pipe, shutting off water quickly is key to limiting damage. Make sure all household members know where the shut-off valve is located (usually in your basement, near the front or back of the home).

What to Do If Your Pipes Freeze

If you turn on the tap and only a trickle comes out — or nothing at all — you may be dealing with a frozen pipe. Here’s what to do:

• Keep the faucet open: As the frozen area starts to thaw, water will begin to flow and help melt the ice inside the pipe.
  
• Apply gentle heat: Use a hair dryer, space heater, or heating pad to warm the frozen section. Never use open flames.
  
• Start near the faucet: Begin heating near the faucet and work your way down the pipe toward the frozen section.
  
• Call a plumber: If you’re unable to locate or thaw the frozen area, or if a pipe has burst, contact a professional right away.

Pipe Winterization FAQs

At what temperature will pipes freeze in a house?

Pipes can begin to freeze when the temperature drops to 32°F or lower, especially if they’re in uninsulated or exposed areas. Interior plumbing along exterior walls is particularly vulnerable. The danger zone is generally below 20°F, especially for extended periods.

Does keeping the heat on prevent pipes from freezing?

Yes, maintaining a consistent indoor temperature is one of the best ways to prevent pipes from freezing. Keep your thermostat set to 55°F or higher, even when you’re away from home.

Does a dripping faucet prevent pipes from freezing?

Yes, letting faucets drip slightly can keep water moving, which helps prevent freezing. This is particularly important for pipes that are exposed or located in colder parts of the home.

Don’t Let Cold Weather Catch You Off Guard

Chicago winters can be brutal, but with proper plumbing winterization, you can keep your home safe and dry all season long. Whether you’re living in a single-family home, managing a multi-unit building, or overseeing a commercial property, taking the time to prepare your pipes for winter is well worth the effort.

At Madden Sewer & Drain, we’ve been helping Chicagoans prevent burst pipes and tackle all their plumbing challenges since 1967. We’re fully licensed, insured, and experienced in handling everything from water heater maintenance to drain cleaning to full pipe repair and replacement.

Call us today at 773-588-7534 and let our family-owned business help you stay warm and worry-free this winter.