Catch a Leak Before It Costs $27,000.
A $30 sensor is the cheapest insurance you own.
The average water leak runs for months before you notice — and the average insurance claim for water damage is now $12,000 to $27,000. A whole-home leak detection system with automatic shutoff is the cheapest, highest-ROI safety upgrade available, and the 2024 IRC now requires leak detection on new construction in many states.
What This Kit Does:
- Detects leaks at high-risk fixtures: water heater, dishwasher, washing machine, toilets, fridge line
- Shuts off the main automatically when a sensor trips (with auto-shutoff valve models)
- Monitors whole-home flow rate and flags continuous-running fixtures (running toilets, stuck irrigation valves)
- Sends phone alerts the instant moisture is detected
- Logs humidity and temperature in leak-prone areas to predict mold risk
The Water Leak Detection Kit: 3 Tiers
Moen Smart Leak Detector (3-pack)
Battery-powered puck sensors you place under sinks, behind the water heater, near the washing machine. App alerts the second water bridges the contacts. No hub required.
View on Amazon →Flo by Moen Smart Water Shutoff
Installs on the main cold-water line. Learns your household's normal flow pattern and flags anomalies (a toilet running for 18 minutes, a hose left on). Auto-shuts-off on detected leaks. The single best upgrade for second homes and snowbirds.
View on Amazon →Phyn Plus Smart Water Assistant + Shutoff
Acoustic + pressure analysis detects pinhole leaks behind walls before they cause damage. Auto-shutoff, freeze warnings, and per-fixture consumption breakdown. The system insurance companies will subsidize.
View on Amazon →Real Results from Real Users
"Washing-machine hose burst while we were on vacation. Flo shut off the main, the alert hit my phone in Maui, plumber replaced the hose for $40. No damage." — Tom, Arizona
"Caught a running toilet that was wasting 220 gallons a day. Paid for the sensor in 11 days." — Elena, California
How It Compares to Guessing
| Without Monitoring | With Monitoring |
|---|---|
| "I only notice leaks when water is on the floor" | Phone alert the second moisture is detected |
| Find out from the water bill, months later | Real-time flow rate + fixture-level breakdown |
| Vacation = fingers crossed | Auto-shutoff from anywhere in the world |
| Insurance deductible is $5,000+ | Whole-home monitoring for under $500 once |
Want the full system? Pair leak detection with a Smart Thermostat to cut your whole-home energy + water waste.
See Related Kit → See All Bundles →Last Updated: 2026-07-01
