How to Winterize Outdoor Faucets
Learning how to winterize outdoor faucets is one of the most important fall chores for any homeowner in a cold climate. A single hard freeze can crack a faucet, split the pipe behind it, and flood a wall cavity, causing hundreds or thousands of dollars in damage. The good news is that winterizing takes about 15 minutes per faucet, costs almost nothing, and prevents the whole problem. This guide walks you through every step, explains the difference between standard and frost-free faucets, and shows you what to do if a faucet has already frozen.
Why Winterizing Matters
Water expands by about 9 percent when it freezes. That expansion creates enormous pressure inside a pipe, enough to split copper, crack brass fittings, and burst PEX lines. The damage often happens silently inside the wall, and you may not discover it until spring, when the ice thaws and water pours into your framing, insulation, and drywall. A burst outdoor faucet line can waste hundreds of gallons before anyone notices, and the repair involves a plumber, drywall work, and possibly mold remediation.
The risk is highest for standard hose bibs, where water sits right at the outside wall. Frost-free sillcocks are better protected because their valve seat is deep inside the warm wall, but they are not immune. A hose left connected to a frost-free faucet traps water in the stem and can cause the same burst. That is why winterizing matters for every type of outdoor faucet, not just old ones. Even a faucet that survived last winter can fail this year if the freeze is harder or the hose was left on.
Winterizing is also cheap insurance compared with the alternatives. A foam faucet cover costs $5 to $10, a few minutes of your time costs nothing, and the whole job is free if you do it yourself. Compare that with a burst pipe repair, which typically costs $300 to $1,000 for the plumbing fix alone, plus drywall and water damage restoration on top. For more on what happens when pipes freeze, see our frozen pipes hub and our frozen outdoor faucet fix guide.
What You Need
You do not need special tools to winterize outdoor faucets. Most homeowners already have everything required. Gather the following before you start: a bucket or a towel for any water that drains out, a pair of pliers or an adjustable wrench in case a hose connection is stuck, and insulated faucet covers, one for each outdoor faucet. Foam covers are the most common and cost $5 to $10 each. Hard plastic covers with foam lining cost a little more and last longer. You may also want a short length of pipe insulation or heat tape if you have exposed pipes in an unheated garage or crawl space.
It also helps to know where your indoor shutoff valves are before the cold arrives. Most homes have a separate shutoff valve for each outdoor faucet, located on the supply line inside the house, often in the basement, crawl space, or utility room near the exterior wall. The valve may be a lever-style ball valve or a round gate valve. If you cannot find a shutoff for a faucet, the main water shutoff will work, but it turns off water to the whole house, so it is not ideal. If your home has no individual shutoffs, consider having a plumber install them. It is a small job that makes winterizing much easier every year.
Pick the right time to winterize. The best time is in mid to late fall, before the first hard freeze, when nighttime temperatures start dropping into the 30s. Do not wait for the first freeze warning. By the time the forecast calls for 28 degrees, you may only have hours, and a faucet with a hose still attached is already at risk. A good rule is to winterize when you put away the garden hoses for the season, usually in October or early November in most cold-climate regions.
Step-by-Step Winterizing Guide
Follow these steps for each outdoor faucet. The whole process takes about 15 minutes per faucet, and most of that is waiting for the line to drain.
Step 1: Disconnect all hoses. Remove every garden hose, splitter, and sprinkler timer from the faucet. Drain each hose by holding one end up and letting the water run out, then coil it and store it in a garage or shed. A hose left outside over winter can crack, and a hose left connected to the faucet is the single most common cause of burst frost-free faucets. Check every faucet, including ones you rarely use, such as the one behind the garage.
Step 2: Close the indoor shutoff valve. Go inside and find the shutoff valve on the supply line for that faucet. Turn it clockwise to close it. If the valve is a lever, turn it so the handle is perpendicular to the pipe. If the valve is stiff, use a wrench gently, but do not force it. A stuck valve may need to be replaced, which is a job for a plumber. If your home has a drain cap or bleeder valve on the shutoff, open it to let water out of the line between the shutoff and the faucet.
Step 3: Open the outdoor faucet. Go back outside and open the faucet fully. Let any water in the line drain out. You may get a short spurt followed by a trickle, then nothing. Leave the faucet open through the winter. An open faucet lets any remaining water expand without building pressure, and it gives you a visible sign in spring if something went wrong. If water keeps flowing steadily, the indoor shutoff is not fully closed or is leaking, and it needs attention.
Step 4: Drain the line completely. If the line has a bleeder cap near the indoor shutoff, open it and let the water drain into a bucket until it stops. Some systems have a small drain valve on the pipe between the shutoff and the exterior wall. Opening it empties the section of pipe most at risk. Once the water stops, close the bleeder cap so the line stays empty but sealed. Do not close the outdoor faucet itself, since leaving it open is what protects the line.
Step 5: Install an insulated cover. Slip a foam or hard-shell insulated cover over the faucet and secure it snugly against the wall. The cover adds a layer of insulation and keeps wind and cold air off the faucet body. It is especially useful for standard hose bibs and for faucets on north-facing walls. Make sure the cover fits tightly with no gaps. A loose cover does little good. Covers are cheap enough to replace every couple of years if the foam compresses or the strap wears out.
Winterizing Frost-Free Faucets
Frost-free faucets, also called frost-free sillcocks, are easier to winterize than standard bibs, but they still need attention. The valve seat sits deep inside the warm wall, so the stem drains by gravity when the faucet is turned off. That design works only if the faucet is installed with the correct downward pitch and the hose is disconnected. A hose left on traps water in the stem, and a faucet installed level or tilted inward will not drain properly.
To winterize a frost-free faucet, disconnect the hose first, then turn the faucet off. That is the critical step. If your home has an indoor shutoff for the faucet, close it as well and open the faucet to drain the line, just like a standard bib. Leave the faucet open through the winter. Some homeowners skip the indoor shutoff for frost-free models, relying on the faucet design alone, but using the shutoff adds a second layer of protection and costs nothing. For a full comparison of faucet types, read our hose bib vs sillcock guide and our frost-free hose bib cost guide.
One mistake to avoid with frost-free faucets is installing a cover over a faucet that still has a hose attached. The cover hides the problem but does not fix it. Another is assuming a frost-free faucet is freeze-proof. It is freeze-resistant when used correctly, not freeze-proof under all conditions. A long, hard freeze with wind can still chill the wall cavity enough to freeze water in the stem, especially if the wall is poorly insulated. That is why the indoor shutoff and the cover are worth the extra few minutes.
Using Insulated Faucet Covers
Insulated faucet covers are simple, cheap, and effective. The most common type is a molded foam dome with an elastic or Velcro strap that holds it tight against the wall. It traps a pocket of still air around the faucet, which slows heat loss. Hard plastic covers with foam lining work the same way and tend to last longer. Both types cost $5 to $15 each, and they pay for themselves many times over if they prevent even one freeze.
To use a cover, make sure the faucet is drained and the hose is disconnected first. Then press the cover over the faucet and tighten the strap so it sits flush against the wall with no gaps. Check the fit on the first cold night. If the cover is loose or the foam is compressed, replace it. Covers are not a substitute for draining the line, but they are a useful extra layer, especially for standard hose bibs, for faucets on shaded or north-facing walls, and for homes in areas with frequent freeze-thaw cycles. Remove the covers in spring when you turn the water back on, and store them somewhere dry so the foam does not degrade.
Some homeowners use rags, towels, or plastic bags instead of a proper cover. Those are better than nothing, but they absorb moisture, freeze solid, and can make the problem worse. A purpose-made foam cover is so cheap that there is no reason to improvise. If you have exposed pipes in a garage or crawl space, wrap them with foam pipe insulation as well. Our pipe insulation cost guide covers insulation options and prices.
Common Mistakes to Avoid
The most common winterizing mistake is leaving a hose connected to the faucet. It is easy to forget a hose on the back of the house or one attached to a splitter. Walk around the whole house and check every faucet, including the ones you rarely use. The second mistake is closing the outdoor faucet after draining it. An open faucet lets any trapped water expand safely. A closed faucet traps water in the line and can still burst. Leave the faucet open all winter.
Another mistake is forgetting the indoor shutoff. Some homeowners drain the hose and install a cover but never close the indoor valve, which leaves the line pressurized all winter. If the faucet or the pipe develops a crack, water will flow until someone notices. Closing the indoor shutoff removes the pressure and limits the damage. The reverse mistake is closing the indoor shutoff but not opening the outdoor faucet to drain the line. The water trapped between the shutoff and the faucet can still freeze and crack the pipe, even with no pressure behind it.
Finally, do not wait until the first freeze warning to winterize. Weather forecasts are not always right, and a sudden cold snap can catch you off guard. Winterize in the fall when you put the garden to bed, and make it part of your annual routine alongside cleaning gutters and servicing the furnace. If you hire a plumber for a fall maintenance visit, ask them to check your outdoor faucets at the same time. For more seasonal plumbing help, browse our outdoor plumbing hub and our faucets and fixtures hub.
What to Do If a Faucet Freezes
If you turn on an outdoor faucet in winter and nothing comes out, or only a trickle, the line may be frozen. Do not force the handle or leave the faucet open with the indoor shutoff on. First, close the indoor shutoff valve for that faucet to stop water pressure from building behind the ice. Then check for visible damage, such as a cracked faucet body, a split pipe, or water staining on the wall inside the house. If you see a crack or a leak, call a plumber right away and keep the water off.
If there is no visible damage, you can try to thaw the line gently. Apply heat to the exposed pipe and faucet with a hair dryer, a heat lamp, or warm towels, starting from the faucet and working back toward the house. Never use a torch or an open flame, which can damage the pipe and start a fire. Open the faucet slightly so water can flow once the ice melts. If the line does not thaw within 30 minutes, or if you cannot reach the frozen section because it is inside the wall, call a plumber. Forcing the issue can turn a frozen pipe into a burst pipe.
Once the line thaws, turn the water back on slowly and watch for leaks at the faucet and inside the wall. Even a small drip inside the wall needs attention, since it can rot framing and feed mold. If the faucet leaks at the spout after thawing, the washer or cartridge may be damaged and need replacement. Our frozen outdoor faucet fix guide and our how to thaw frozen pipes guide walk through the thawing process in more detail.
Winterizing your outdoor faucets is a small job with a big payoff. Disconnect the hoses, close the indoor shutoffs, open the faucets to drain, and add insulated covers, all before the first hard freeze. Do it every fall, and your outdoor plumbing will last for years without a burst pipe or a surprise repair bill. If you find a leaking or damaged faucet while winterizing, fix it now, before the cold weather makes the job harder. For help with a leaking, frozen, or damaged outdoor faucet, call (877) 762-1902.