Protecting your home from water damage is no longer about reacting — it’s about preventing. The Moen Smart Leak Detector is a compact, powerful sensor designed to detect leaks, track humidity, and monitor temperature fluctuations that could lead to mold growth, flooding, or frozen pipes. Whether placed under a washing machine, behind a toilet, beside a water heater, or near a sump pump, this device constantly watches for changes and notifies you instantly through the Moen Smart Water App.
Moen’s Smart Leak Detector acts as your home’s early-warning system. Using advanced moisture and environmental monitoring, the detector helps you prevent damage before it starts. The moment a leak, abnormal moisture level, or significant temperature shift occurs, the system triggers alerts via push notification, email, or phone call — providing immediate awareness and control no matter where you are.
The Smart Leak Detector can operate as a standalone device, or it can link with the Moen Flo Smart Water Monitor & Shutoff (sold separately). When paired with the Flo Shutoff, the system becomes a complete whole-home protection ecosystem. A leak detected in the laundry room or under a sink can automatically trigger the Flo Shutoff to close the main water supply — stopping water damage before it spreads.
You can install as many detectors as needed throughout the home. Many homeowners place them near:
Washing machines (hose leaks are common)
Water heaters (tank failures and slow leaks)
Dishwashers and refrigerators with water lines
Bathroom sinks and toilets
Basement sump pump pits
Furnace humidifiers and HVAC condensate lines
With multiple detectors working together, every high-risk area is monitored 24/7.
Water isn’t the only threat; humidity and temperature shifts can lead to mold growth and frozen pipes. The Moen Smart Leak Detector continually measures:
Temperature — detect freezing conditions before pipes burst
Humidity — helping prevent mold or musty basement conditions
If readings reach unsafe levels, the device sends a notification so you can take corrective action promptly.
Every detector includes a 48" (4 ft) remote sensor cable with a round sensing disc. This disc makes it easy to reach into small or hidden spaces — under appliances, behind toilets, beneath sinks, and inside vanity cabinets — without having to physically place the main device in awkward locations.
For expanded coverage, you can upgrade to the 6' Leak Sense Cable, which detects moisture along its entire length. This is ideal for:
Perimeter monitoring around water heaters
Under kitchen cabinet runs
Basement floor spans where water could spread
Whether you need pinpoint detection or large-area sensing, Moen offers a configuration to suit every home.
Each Smart Leak Detector is powered by a CR123A lithium metal battery designed to last up to two years. No special tools or electrical work is needed — simply place the detector where you need it and connect via Wi-Fi using the Moen Smart Water App.
Open the Moen Smart Water App.
Add a new device and scan the quick-connect code.
Place the detector and enable notifications.
From the app, you can monitor:
Live humidity levels
Current temperature
Leak history and activity logs
Status of all detectors in the home
There are no subscription fees — full monitoring and alerts are included.
24/7 leak, humidity, and freeze monitoring
Instant smartphone alerts through the Moen Smart Water App
Works independently or integrates with the Flo Smart Water Shutoff
Place anywhere: under appliances, near plumbing fixtures, or in basements
Expandable system — use one or multiple units
Includes 48" remote sensing cable
Optional 6' sensing cable detects water along full length
Battery powered (CR123A — up to 2-year life)
1-year limited warranty
Water damage is the #1 insurance claim in North America. A single leak from a water heater or burst pipe can cost $10,000 to $25,000 — often much more when flooring, drywall, or cabinetry must be replaced.
The Moen Smart Leak Detector is a low-cost safeguard that stops damage before it begins.
Moen’s system gives you:
Confidence
Control
Instant visibility
Peace of mind when traveling or away from home
From primary residences to cottages and rental properties, you can manage multiple locations from the same app.
| Package Option | Includes | Best For |
|---|---|---|
| Single Detector + 48” Sensor Cable | 1 detector + sensor disc | Single high-risk zones (toilets, dishwashers, sinks) |
| 3-Pack Detector Kit | 3 detectors + sensor cables | Whole-home coverage (laundry, water tank, kitchen) |
| 6’ Leak Sense Cable (Accessory) | Detects water along full length | Large area coverage or perimeter protection |
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