Choosing a Water Leak Detector

Simple spot sensors

The most affordable option is a small battery-powered sensor you place where leaks are likely, near the water heater, under sinks, behind the washer, or by the sump pump. When it detects water it sounds an alarm and, on smart models, sends a phone alert. They are inexpensive enough to put one anywhere water could appear.

Whole-home automatic shutoff

A step up is a smart valve installed on your main water line that monitors flow and automatically shuts off the water when it detects an abnormal pattern, like a pipe running continuously. This protects you even when you are away from home, which is exactly when a small leak becomes a flood.

Which one fits your home

If you want low-cost peace of mind, start with a handful of spot sensors in the highest-risk places. If you travel often, have had water damage before, or want the strongest protection, a whole-home shutoff valve is worth the professional installation. Many homeowners use both.

Place a leak sensor on the floor next to your water heater. Tanks often leak slowly from the bottom for weeks before failing, and early warning can save your flooring.

Leak protection

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Common questions