Written by Mark Sullivan, Master Plumber, TN License #M-XXXXX 20+ years serving Middle Tennessee homeowners with FiveStar Plumbing August 3, 2025 | Last reviewed and updated: july 30 2026
Winterize your plumbing in Tennessee by insulating pipes, draining outdoor faucets, and checking your water heater. Call FiveStar Plumbing for inspections and emergency support.
Tennessee winters may not be the harshest in the country, but even occasional cold snaps and freezing nights pose serious risks to your home’s plumbing system. Every year, homeowners across Nashville, Hendersonville, Greenbrier, Brentwood, and surrounding areas face burst pipes, water damage, and costly emergency repairs. Many of these problems are completely preventable with a few proactive steps.
A Story From the Field
Last January, during one of Middle Tennessee’s overnight cold snaps, our team responded to a call in Hendersonville from a homeowner whose kitchen pipe had frozen and split behind a cabinet that hadn’t been opened in months. By the time we arrived, water had already soaked through the subfloor. The fix itself replacing about three feet of copper pipe took under an hour. The cleanup and drywall repair took over a week and cost far more than the plumbing work itself. That call is a big reason we push winterization every year: a $20 pipe insulation sleeve or a habit of leaving that cabinet door open would have prevented the whole situation.
In this guide, we’ll walk you through how to winterize your plumbing system in Tennessee so that you’re fully prepared before the first freeze hits. By following these steps, you can protect your home, save money on repairs, and enjoy peace of mind during the colder months.
Why Winterizing Matters
When temperatures drop below freezing, water inside your pipes expands as it turns to ice. This expansion creates pressure inside the pipes, often causing them to crack or burst. A single burst pipe can flood your home, damage walls and flooring, ruin furniture, and lead to thousands of dollars in repairs.
Even in Tennessee, where winter temperatures are generally mild compared to northern states, cold snaps can be severe enough to freeze exposed pipes. Homes with older plumbing or pipes located near exterior walls, garages, or crawl spaces are especially at risk. According to the National Weather Service Nashville office, Middle Tennessee typically sees several nights per winter where temperatures drop into the low 20s or teens more than enough to freeze an uninsulated pipe.
Winterizing your plumbing not only prevents frozen and burst pipes, but it also helps maintain your water heater, ensures hot water availability, and can reduce energy costs by preventing heat loss from poorly insulated plumbing. Whether you’re staying home or traveling during the winter holidays, taking preventive steps now can save you headaches and money later.
Step-by-Step: How to Winterize Your Plumbing System
1. Insulate Exposed Pipes
Examine all crawl spaces, basements, attics, garages, and exterior walls for exposed plumbing. These pipes are most susceptible to freezing. Use foam pipe insulation sleeves or heat tape to protect them from low temperatures. The International Plumbing Code recommends insulation on any water piping installed in exterior walls or unheated spaces for this exact reason.
Pro Tip: Pay special attention to pipes that run along exterior walls, through unheated spaces, or near windows. Securing insulation with zip ties or specialized tape ensures it stays in place all winter.
Extra Tip: For metal pipes in particularly cold areas, consider self-regulating heat tape, which provides extra protection without the risk of overheating.
2. Shut Off and Drain Outdoor Faucets
Disconnect all garden hoses, turn off water to exterior spigots, and drain the faucets completely. This prevents water left in outdoor lines from freezing and causing cracks.
Bonus Tip: Install frost-proof faucet covers. They’re inexpensive and provide additional protection during unexpected freezes, especially for homes in areas that see occasional sub-zero temperatures.
3. Seal Cracks and Gaps
Even small cracks or gaps in exterior walls, around windows, or near plumbing pipes can let cold air in and threaten your plumbing. Seal these openings with caulk, spray foam insulation, or weatherstripping to prevent cold drafts from reaching pipes.
Extra Tip: Don’t overlook less obvious areas, such as spaces around water meters, sump pumps, and laundry room plumbing. Adding insulation or foam panels can make a big difference in keeping pipes warm.
4. Let Faucets Drip During Freezes
During extreme cold nights, allow faucets particularly those connected to pipes along exterior walls to drip slightly. This keeps water moving through the pipes, reducing the chance of freezing and bursting.
Even a slow drip helps relieve pressure in the plumbing system. This technique is especially useful in older homes with less insulation or in areas prone to sudden cold snaps.
5. Open Cabinet Doors
Cabinets under sinks often house vulnerable pipes along exterior walls. Leaving cabinet doors open allows warm indoor air to circulate around the pipes, helping prevent freezing this is exactly the step that would have saved our Hendersonville customer mentioned above.
Pro Tip: If you have small children or pets, secure cabinet doors with child-safe latches to prevent accidents while keeping pipes exposed to warmer air.
6. Know Where Your Main Shut-Off Valve Is
In the event of a burst pipe, shutting off the main water supply immediately can minimize damage. Make sure every member of your household knows the location of the main shut-off valve and how to operate it.
Pro Tip: Label the valve clearly for easy access in emergencies. Some homeowners also add a small instruction sign nearby to remind visitors or temporary occupants of its location.
7. Have Your Water Heater Serviced
A properly functioning water heater is essential in the winter. Sediment buildup, leaks, or worn components can cause water heaters to work inefficiently, leading to cold showers or even pipe damage.
Flush your tank, inspect for wear, and ensure your heater is operating efficiently. Most manufacturers, including Rheem and A.O. Smith, recommend an annual flush to remove sediment buildup a step that also extends the unit’s lifespan.
Extra Tip: If your water heater is more than 10 years old, consider scheduling a professional replacement consultation before winter to avoid emergency breakdowns.
Leaving for Vacation? Do This
If you plan to be away from home during cold weather, additional precautions are necessary:
- Shut off the water supply entirely
- Drain your plumbing system to prevent stagnant water from freezing
- Keep your home heated to at least 55°F
These steps prevent frozen pipes, water damage, and unnecessary stress while you’re away. Even short trips during a cold snap can create problems if pipes are left vulnerable.
Additional Tips for Tennessee Homeowners
- Monitor outdoor temperatures: Keep an eye on forecasts, especially for sudden dips below freezing.
- Insulate your water meter: Meter boxes often freeze in prolonged cold. Adding insulation or a meter box cover can prevent this.
- Consider professional winterization: Homes with older plumbing or extensive exposed pipes may need a plumbing expert to ensure full protection.
- Check your sump pump: Winter floods or ice can cause problems if your basement sump pump isn’t functioning properly. Test it before the first freeze.
- Keep emergency supplies handy: Have buckets, towels, and a pipe repair kit accessible in case of leaks or minor bursts.
What Our Customers Say
“FiveStar came out the same day our pipe burst and walked us through exactly what happened and how to prevent it next winter. Straightforward, no upsell, just good work.” Hendersonville homeowner, verified customer review
Need Help Winterizing? Call FiveStar Plumbing
At FiveStar Plumbing, we offer:
- Winter plumbing inspections to identify vulnerable pipes
- Pipe insulation services for crawl spaces, basements, and attics
- Water heater maintenance and flushes
- Emergency plumbing support throughout Middle Tennessee
We’re a licensed and insured plumbing contractor (TN License #XXXXX), proudly serving homeowners across Nashville, Hendersonville, Greenbrier, Brentwood, and surrounding areas, helping them prepare for winter and avoid costly plumbing emergencies.
Final Thoughts
Winterizing your plumbing system in Tennessee may take a few hours, but the benefits are priceless. Protecting your pipes prevents frozen water, costly repairs, and stress during the holidays. With the right steps, you can enjoy peace of mind, reliable hot water, and a safe, dry home all winter long.
Contact FiveStar Plumbing today to schedule a full seasonal plumbing checkup or request help winterizing your home before the first freeze.
Frequently Asked Questions
At what temperature do pipes freeze in Tennessee?
Pipes can begin to freeze when temperatures drop below 32°F, but pipes in uninsulated or exposed areas may freeze even when it’s slightly warmer especially during the multi-day cold snaps Middle Tennessee sees most winters.
Should I turn off my water if temperatures drop below freezing?
If you’re leaving your home or expecting prolonged freezing temperatures, shutting off your water and draining the system can help prevent burst pipes and water damage.
Is letting faucets drip really effective in cold weather?
Yes. Letting faucets drip keeps water moving, which reduces pressure buildup and lowers the risk of pipes freezing and bursting during cold nights.
When should I call a plumber to winterize my home?
If you have older plumbing, exposed pipes, or plan to travel during winter, a professional inspection can ensure your system is fully protected before freezing weather arrives. Our licensed technicians serve Nashville, Hendersonville, Greenbrier, Brentwood, and the surrounding Middle Tennessee area contact us to schedule a checkup.
