How to Prevent Your Outside Faucets From Freezing


By Reuben Saltzman

Most homeowners who live in cold climates know it’s important to “winterize” the outside faucets to prevent them from freezing, which can destroy the faucet or lead to a burst pipe. The problem is that many people don’t quite get it right – winterizing the outside faucets in the fall seems like a simple thing to do, and it seems like it should be straightforward and easy, but there are a few tricks you need to know to make sure all the water is out.

Garden hoses

First and foremost, disconnect your garden hose from the outside faucet. If you leave your garden hose attached to the faucet, you’re asking for trouble.

Frost-free sillcocks with an integral vacuum breaker

If you have a properly installed frost-free sillcock (outdoor water faucet) with an integral vacuum breaker, you shouldn’t have anything to worry about. You should be able to leave the water on to these faucets all year ’round without them freezing. A properly installed frost-free sillcock will have a slight downward pitch, so that when the water is turned off, the water will all drain out of the stem (above, top).

When frost-free sillcocks aren’t installed with this downward pitch, water will sit inside the stem of the sillcock even when it’s turned off.  The pitch is a little dramatic in the photo (above, bottom), but you get the point.

If this water freezes, it can burst the stem of the sillcock. Most homeowners don’t know this has happened until the first time they use their faucet in the spring. Once they turn their faucet on, water starts shooting out of the burst stem inside the house, making a big mess while nobody is inside the house to see it. This recently happened to Connecticut home inspector James Quarello while he was inspecting a home. Better him than me, I say.

The fix for an improperly installed frost-free sillcock is to have it re-installed with a slight downward pitch.