How to Winterize an Outdoor Faucet (Before Pipes Freeze)
Winterize an outdoor faucet in 10 minutes: shut off the indoor valve, drain the pipe section, and snap on a $10 foam cover before temps drop below 28 degrees F.
Quick answer: To winterize an outdoor faucet, disconnect any attached garden hose, shut off the dedicated indoor shutoff valve (usually in the basement or crawl space near the faucet location), then open the outdoor spigot to drain the short section of pipe between the shutoff and the faucet head. Leave it open a minute or two, close it, and snap on a foam insulated cover if you have one. Do this before overnight lows hit 28 degrees F. The whole process takes about 10 minutes.
The outdoor faucet is one of those things that stays out of mind until January, when you hear dripping from inside the wall and realize the pipe froze and cracked at some point in October. Twenty minutes of fall prep prevents that entire situation.
Most outdoor faucets installed in the last 30 years are frost-free sillcocks, which have the valve seat located inside the house rather than at the spigot itself. A frost-free sillcock handles light freezes on its own, provided no hose is attached. But leaving a garden hose connected during a hard freeze traps water in the pipe regardless of the faucet type, and that is where burst pipes come from. The steps below cover both regular and frost-free sillcocks.
What You’ll Need
- Adjustable pliers or a crescent wrench (only if removing a stuck hose coupling)
- A bucket or old towel for drips
- Foam faucet cover/insulator (optional, around $8 to $10 at any hardware store)
- A piece of masking tape and a marker (to label the shutoff valve if it is not already marked)
Step 1: Disconnect and Drain the Garden Hose
This is the step people skip and regret. Even a frost-free sillcock will fail if a hose is still attached when temperatures drop hard, because the hose prevents the pipe from draining back toward the valve seat.
Unscrew the hose at the spigot. If it has been attached all season, expect some resistance. Grip the hose coupling with pliers and work it counterclockwise. Once disconnected, drain the hose by holding one end up and walking the length of it so water runs out the other end. Coil it and store it somewhere above freezing. A hose left kinked in a cold garage through winter tends to crack before spring.
Step 2: Find the Indoor Shutoff for Your Outdoor Faucet
Most outdoor faucets have a dedicated shutoff valve somewhere inside the house. Look along the basement wall or crawl space wall closest to where the exterior spigot is located. Sometimes it is in a utility room or behind a small access panel.
If yours is not labeled, mark it now with tape. You will want to find it quickly if a pipe ever bursts or if you need to do repairs mid-season. The process for shutting off water to your house covers the main valve and indoor shutoffs in more detail.
If you cannot find a dedicated shutoff, you can skip ahead to Step 4 if you have a frost-free sillcock. The proper fix is to have a plumber add a dedicated valve, which runs around $150 to $250, but that is a project for a different day.
Step 3: Shut Off the Indoor Valve
Turn the shutoff valve clockwise until it stops. Gate valves, the older round-wheel style, stop when the seat is firmly seated. Ball valves, the quarter-turn handle type, stop when the handle sits perpendicular to the pipe.
Do not overtighten. Snug is enough. Old gate valves that have not been operated in years sometimes leak slightly at the packing after you move them. If you see a drip at the valve stem, tighten the packing nut a quarter turn and it usually stops.
Step 4: Open the Outdoor Faucet to Drain
Go back outside and open the outdoor spigot by turning the handle counterclockwise. This releases the water trapped in the short pipe segment between the indoor shutoff and the faucet head. If you skipped Step 3 and have a frost-free sillcock, this step still drains the pipe back toward the valve seat inside the wall.
A small amount of water will drip out. Let it run until it stops completely, usually 30 to 60 seconds. Leave the outdoor handle in the open position for a couple of minutes to let any residual moisture evaporate, then close it.
Step 5: Install a Faucet Cover
Foam faucet insulators cost about $8 to $10 and snap over the spigot with a wing nut or elastic band. They add a buffer against radiant cold on nights that drop below 15 to 20 degrees F.
If you already shut off the indoor valve and drained the pipe, the cover is mostly an extra layer of insurance for hard cold snaps. For anywhere in the upper Midwest, mountain states, or New England, use one. If you are in the Southeast and temperatures rarely dip below 20 degrees F, you can skip it without much risk.
Common Mistakes
Leaving the garden hose connected. This causes more burst outdoor pipes than anything else, even on frost-free sillcocks. The hose holds water against the valve. That is the whole problem.
Shutting the indoor valve without opening the outdoor one. If you close the indoor valve and walk away, you leave a section of pipe full of water between the shutoff and the spigot. That water freezes, expands, and cracks the pipe. Open the outdoor faucet after you shut the indoor valve, every time.
Waiting until the last minute. A hard freeze can arrive faster than a forecast predicts. Start this in early October in cold climates, before the first frost warning. Check your local average first frost date and work backward by a week.
Forgetting sprinkler systems. If you have an irrigation system that connects to an outdoor spigot, that needs to be blown out with compressed air before you winterize the faucet. Your sprinkler service can handle this as part of their fall shutdown. If you have a stuck or non-retracting sprinkler head at the end of the season, the system probably still has water in it.
Leaving indoor shutoff valves closed indefinitely. Run water through them every spring when you open outdoor season to make sure they still seat and open cleanly. Gate valves that sit closed for years develop mineral deposits and sometimes get stuck.
FAQ
When should I winterize my outdoor faucet? Before the first overnight forecast below 28 degrees F. In most of the northern US and mountain states, that is September through early October. Set a calendar reminder in early September so it lands on your radar before the fall chore list gets out of control.
What happens if I forget to winterize and the pipe freezes? You may not hear anything until the pipe thaws and starts leaking through the wall or ceiling. If you see water dripping near the outdoor faucet location after a hard freeze, shut off the indoor valve immediately. Do not turn on the spigot to test it. A burst section can release a significant volume of water before you get it under control. A plumber can replace the cracked section for $200 to $400 depending on how easy the access is.
Do I need to winterize a frost-free sillcock? Frost-free sillcocks are designed to drain automatically when you close them, pulling water back past the valve seat that sits inside the heated wall. They handle light freezes on their own. But they still require disconnecting the garden hose before temperatures drop, and using the indoor shutoff valve is the right practice for any hard freeze below 15 degrees F.
How do I know if I have a frost-free sillcock? Frost-free sillcocks have a longer stem than standard faucets, typically 8 to 12 inches. When you open them, you can hear a slight delay before water flows, because the valve is deeper in the wall. Most homes built after 1990 have them. If you have opened the faucet in winter before and it flowed normally, it is probably frost-free. The leaky outdoor faucet repair guide covers the anatomy of both types in more detail.
Can I just use a foam cover without shutting off the indoor valve? For mild climates and frost-free sillcocks, a foam cover may be enough if temperatures rarely dip below 20 degrees F. But the cover alone will not help if a hose is still attached. Shutting off the indoor valve costs nothing and takes two minutes. Use both if you have them.
What if I cannot find the shutoff valve? Check the basement wall directly behind the outdoor faucet location, utility closets, and crawl spaces. If there is no dedicated shutoff, you may need a plumber to add one. In the meantime, making sure the outdoor faucet handle is fully closed and removing any attached hose before cold weather is your best option.
Does this apply to outdoor shower fixtures? Yes. Outdoor shower valves and utility hose bibs follow the same process: disconnect hoses, shut off the supply, drain, and insulate if you are in a cold climate.
Can I use pipe heat cable instead of shutting off the valve? Pipe heat cables wrap around exposed pipes and prevent freezing, running around $20 to $40 for a short run. They work well for pipes in unheated spaces like crawl spaces where insulation is not practical. For a standard exterior spigot, the shutoff-and-drain method is cheaper and does not rely on electricity staying on through a storm.
Conclusion
This is an easy fall task that takes about 10 minutes and costs nothing if you already own the tools. It fits naturally alongside preparing your furnace for winter and cleaning gutters. Done together, those three jobs cover most of the outdoor plumbing and HVAC side of fall prep in an afternoon. The U.S. Department of Energy’s EnergySaver guides also cover pipe insulation and weatherization for anyone who wants a broader checklist.
If your outdoor faucet has been dripping at some point this season, fix that before you winterize. Water trapped around a worn washer gives ice more to work with. The leaky outdoor faucet repair guide covers the most common causes and a $3 washer fix.