Catch a Leak Before It Becomes a Claim.
Sensors that alert you, valves that shut the water off.
Water damage and freezing is one of the costliest homeowners insurance losses: the Insurance Information Institute puts the average claim at $15,400 (2019–2023). Leak sensors send a phone alert as soon as water reaches them, and a smart shutoff valve on the main can close the supply automatically, which matters most when nobody is home.
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.
View on Amazon →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 |
| A leak while you are away runs until someone notices | The valve closes the main as soon as a leak is detected |
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
