Moen Flo 3/4-inch Smart Water Shut Off Valve, Smart Home Water Monitor Leak Detector, Wifi Connected, App Enabled Flow Meter and…
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$559.00
Updated Jun 27, 2026 · 1 min read
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the verified-purchase reviewers we read, the Moen Flo is the most established whole-home smart shutoff valve in this pool, with by far the deepest review base (over 2,200 ratings). It installs inline on a 3/4-inch main line, continuously monitors flow and pressure, and can shut the water off automatically when it detects a leak, freeze risk, or abnormal usage, the full feature set that lighter DIY kits don't match. That breadth of capability and adoption is why it earns the overall slot.
What reviewers liked
- Continuous whole-home flow and pressure monitoring with automatic shutoff
- By far the largest verified-purchase review base in this category, indicating wide real-world adoption
- Inline design covers the entire home from a single main-line install
Where it falls short
- A 4.0-star average is noticeably lower than several competitors here, pointing to real-world reliability or app complaints among reviewers
- Inline installation generally requires cutting into the main supply line, often a plumber job
- No independent lab or expert testing signals were available to corroborate the customer-review picture
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Across the verified-purchase reviewers we read, the Moen Flo is the most established whole-home smart shutoff valve in this pool, with by far the deepest review base (over 2,200 ratings). It installs inline on a 3/4-inch main line, continuously monitors flow and pressure, and can shut the water off automatically when it detects a leak, freeze risk, or abnormal usage, the full feature set that lighter DIY kits don't match. That breadth of capability and adoption is why it earns the overall slot.
- Automatic Shutoff
- Learns your home’s water usage patterns to identify abnormalities like running water or small leaks and will automatically turn off water to prevent damage
- Real-Time Notifications
- The device monitors your home’s water, sending you app, phone call and email alerts for potential leaks whether you're at home or away
- App-Based Control
- Proactively control your water from anywhere using the Moen Smart Water Network App for added protection
- Optimize
- FloSense technology enhances the device’s security parameters and optimizes water savings by understanding the home’s water use and tailoring protection accordingly
- Installation Information
- Everything needed for installation is included in box, and professional installation is recommended
- Compatible With
- Moen Smart Water Shutoff devices are compatible with Alarm.com, Ring, Google Assistant, and NICE
- Size
- Model 900-001 fits 3/4-Inch to 1-1/4 Inch pipe diameter (consult a professional)
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