Every fall, Northern Virginia homeowners see the same advice: disconnect your hoses, winterize your outdoor faucets, protect your pipes before the first freeze. It’s good advice, but it’s also generic enough that it doesn’t answer the question a lot of people actually have, which is whether their specific situation needs the full winterization process or just a quick disconnect.
The honest answer depends on what type of outdoor faucet you have, where your supply lines run, and one detail about frost-free spigots that trips up more homeowners than almost anything else in this category.
The Frost-Free Spigot Misunderstanding
If your home has frost-free (sometimes called freeze-proof) hose bibs, you might assume you’re covered and can skip winterization entirely. This is the single most common mistake homeowners make with outdoor plumbing, and it’s worth understanding exactly why.
A frost-free spigot works by placing the actual shutoff valve well back inside the wall, in a heated space, rather than at the exterior faucet handle itself. When you close the faucet, water drains out of the long stem by gravity, leaving the exposed portion empty and protected from freezing even though the handle itself is outside in the cold.
That design only works if the stem can actually drain. A garden hose left attached to a frost-free spigot blocks that drainage path. Water stays trapped in the stem, and when it freezes, it expands with enough force to split the pipe, usually inside the wall where you won’t discover it until spring when you turn the water back on and find it leaking into the framing.
So the answer for anyone with frost-free spigots: you don’t need the full winterization process described below, but you absolutely need to disconnect every hose before the first freeze. Having frost-free fixtures doesn’t mean hoses are fine to leave connected. It means the opposite: they only function correctly when nothing is blocking them.
If You Have Standard (Non-Frost-Free) Hose Bibs
Older homes throughout Arlington, Alexandria, and parts of Fairfax often have standard hose bibs without the frost-free design, where the shutoff valve sits at the exterior wall itself with no protection from cold.
These need the complete winterization process. That means locating the interior shutoff valve for each exterior faucet, usually in a basement or crawlspace near where the supply line penetrates the foundation, closing it, then going outside and opening the exterior faucet to let the trapped water drain out. Leave the exterior faucet open through the winter so there’s nowhere for residual moisture to expand into a blockage.
Some of these interior shutoffs have a small bleeder cap that lets the line between the valve and the spigot drain more completely. If yours has one, use it. And if a valve that hasn’t been operated in a year or more won’t close fully, or starts weeping after you operate it, that’s worth having replaced now rather than trusting it to hold through winter.
If You’re Not Sure Which Type You Have
Look at the middle of the faucet’s spout, where it exits the wall. If the pipe extends noticeably (often 6 to 12 inches) at a slight downward angle before reaching the handle, that’s the telltale stem of a frost-free design. A faucet that sits nearly flush against the wall with the handle right at the exterior surface is typically the standard type that needs full shutoff and drainage.
If you genuinely can’t tell, or if you’re not confident locating and testing the interior shutoff valve yourself, that’s a reasonable thing to have a technician confirm during a fall visit rather than guessing and finding out wrong in January.
Irrigation Systems Are a Separate Question Entirely
Whether or not you winterize your hose bibs, an irrigation system connected to your home’s water supply needs its own process, and gravity draining alone isn’t sufficient.
Sprinkler lines are buried with minimal slope, which means low points in the system hold water regardless of whether the main supply is shut off. Backflow preventers, the above-ground components required on systems connected to municipal water, are particularly vulnerable since they sit exposed and contain internal parts that crack easily when water inside them freezes.
Proper irrigation winterization uses compressed air to force water out of every zone in sequence, which requires the right equipment and correct pressure. This is worth having done professionally through a service like Falcon’s plumbing team rather than attempted with a shop vac or by opening drain valves and hoping gravity does the job. A cracked backflow preventer or a burst lateral line discovered in spring costs considerably more than the winterization service would have.
Exposed Pipe Beyond the Faucets Themselves
Winterizing the faucets addresses one vulnerability, but it’s not the only place outdoor-adjacent plumbing can freeze. Supply lines running through unheated garages, along exterior walls, or through crawlspaces with foundation vents left open all face similar risk.
Foundation vents that were opened in spring or summer to reduce moisture should be closed before the first hard freeze. An open vent turns a crawlspace into an unheated exterior space for the water lines running through it. Exposed pipe in these areas benefits from pipe sleeve insulation, particularly on any run close to an exterior wall or vent opening, which are consistently the coldest points in the line.
What Happens If You Skip It
For a home with standard hose bibs and no winterization, the risk isn’t abstract. A frozen and burst hose bib supply line typically isn’t discovered until the pipe thaws, at which point water is actively leaking, often inside a wall or ceiling where it’s already caused damage before anyone notices. The repair cost for a burst pipe and the resulting water damage is meaningfully higher than the time it takes to winterize properly in the fall.
For homes with frost-free spigots and hoses left attached, the same outcome applies even though the fixture itself is theoretically freeze-resistant. The protection only exists when the design is allowed to work as intended.
Getting a Clear Answer for Your Home
If you’ve moved into a home recently and aren’t sure what type of outdoor faucets you have, what condition the interior shutoff valves are in, or whether your irrigation system has ever been properly winterized, that’s a reasonable thing to have assessed before the first freeze rather than guessing. Schedule a visit with Falcon Heating, Air Conditioning & Plumbing or contact (703) 596-9998 to get a straight answer about what your specific home actually needs before the temperature drops.