Pipe Freeze Risk Checker

On about 27 days each year Richardson drops to 32°F or lower. Tell the checker your town and where your pipes run, and it grades their exposure for a cold night.

You get a risk level and the steps that help before a cold night.

Where do the pipes run?

How the risk level is set

We look at two things. The first is the average January low where you live, taken from ten years of daily weather. The second is where the pipes run. Pipes in an attic, a crawl space or a garage lose heat faster than pipes in a heated inside wall, and pipes on an outside wall or an outdoor spigot are the most exposed.

Each one adds points. A low score reads as low risk. Higher scores read as moderate, high or severe.

What the result means

The climate adds one point to every Richardson result, because the average January low of 35°F is under the 40°F line. Pipes in a heated interior wall, an attic, a garage or a crawl space grade moderate, and pipes in an outside wall or an outdoor spigot grade high.

An average is a typical figure and not a forecast. A single cold night can be colder than the January average, so the steps in the result are worth doing once and leaving in place.

What helps before a freeze

Know where the main water shut-off valve is. Drain and disconnect garden hoses and cover outdoor spigots before the first freeze. Insulate pipes in unheated spaces. On a freezing night, a slight drip at a faucet and open cabinet doors on outside walls help. If you will be away, keep the heat on or have the plumbing drained. A plumber can look at any run you are unsure about.

Common questions

Is a freeze possible when winters are mild?

Yes. Richardson averages 35°F on January nights, and about 27 days a year reach 32°F or lower. On those nights an attic, an unheated garage or an outside wall leaves pipes exposed, which heated rooms do not.

At what temperature do pipes freeze?

Water freezes at 32°F, but a pipe needs several hours of cold to freeze through. Pipes in an unheated space or on an outside wall are the first to go.

Should I leave a faucet dripping on a freezing night?

A slight drip keeps water moving through the pipe, and opening cabinet doors lets warm air reach pipes under sinks on outside walls. Both are simple steps for a night that drops below freezing.

Where is my main water shut-off valve?

It is usually where the water line enters the house, in a garage, a utility room or on an outside wall near the meter. Find it before you need it, and make sure everyone in the house knows where it is.

What if I am away during a freeze?

Keep the heat on at 55°F or higher, or have the plumbing drained before you leave. A plumber can drain the system and tell you how to bring it back.

Climate figures: Daymet daily data 2015 to 2024 for each place.

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