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
Based on 1 trusted source
Current price
$559.00
Updated May 18, 2026 · 1 min read
Sources behind this verdict
11 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Moen Flo 3/4-inch smart water shutoff is the most widely covered product in this category, and that volume of coverage is itself the strongest signal. PCMag's review highlights whole-home usage reporting, automatic and remote shutoff, and IFTTT plus voice control as the core strengths, while flagging the price. techhive.com frames Moen's second-generation valve as a competent water-damage prevention device that also helps drive consumption down.
What reviewers liked
- Largest base of expert and verified-purchase coverage in the category, with PCMag and techhive.com both calling out automatic shutoff and usage reporting as standout features
- Costco verified-purchase reviewers (a high-moderation retailer signal) describe reliable Wi-Fi behavior and strong day-to-day function
- Whole-home water-usage reporting and nightly leak-test routine cited by r/homeassistant and r/Plumbing contributors as legitimately useful
- Widely recognized by insurance partner programs, according to mainstream coverage
- IFTTT and voice-assistant integrations called out by PCMag
Where it falls short
- Multiple r/Plumbing threads report valve or flow-sensor failures in the 2-4 year window, sometimes with no failure indication
- Requires a plumber for installation; r/homeassistant contributors note it is significantly harder to install than a leak puck
- PCMag calls out the price as a notable downside
- No backup battery means a power outage leaves the valve in its current state with no remote alerts
- Some owners on r/Plumbing report the flow meter losing accuracy over time
Across the reviewers we read, the Moen Flo 3/4-inch smart water shutoff is the most widely covered product in this category, and that volume of coverage is itself the strongest signal. PCMag's review highlights whole-home usage reporting, automatic and remote shutoff, and IFTTT plus voice control as the core strengths, while flagging the price. techhive.com frames Moen's second-generation valve as a competent water-damage prevention device that also helps drive consumption down. On the retailer side, a Costco verified-purchase review (a high-trust source given Costco's moderation) calls it a strong product with reliable Wi-Fi behavior.
Where the consensus splinters is long-term reliability. Multiple threads on r/Plumbing surface owner reports of the valve failing at the 2-to-4-year mark, sometimes silently, with one widely cited post titled "Do not buy or use Moen Flo" describing a unit that stopped detecting leaks for two months before the owner noticed. r/homeassistant contributors generally praise the flow-tracking and automatic shutoff capability but note the install is meaningfully harder than a simple leak puck. The 4.0 Amazon average across 2,202 reviews is consistent with that picture: most owners are happy, but a non-trivial minority hit hardware issues after the warranty window.
The net is that the Moen Flo earns the top slot on breadth of coverage, insurance-program recognition, and feature completeness, with the honest caveat that durability beyond year two is the recurring complaint in specialist communities.
- 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)
The Flo by Moen is a smart water meter that monitors water usage throughout your home, tests your system for leaks, and protects against water damage with an automatic shutoff feature.
I have had mine and yes it has helped when water was being overused like my toilet running. Unfortunately the valve broke 4 years in and the ...
I have one. Installed it on my watermain around 2020 i think. A yearish after installing it stopped reading gallons/minute.
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“Moen Flo Smart Water Shutoff Review” · YouTube
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