Moen Flo 3/4" Smart Home Water Monitoring and Leak Detection System - 900-001

SKU #: MOE900001
UPC #: 10860000103500
MPN #: 900-001

MSRP: $922.50

Was: $506.28

Now: $455.65

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Description

Power-Up Flood Protection with Moen Flo 900-001 3/4″ Smart Water Monitor & Automatic Shutoff

Protect your home from leaks and hidden water waste with an inline smart valve that can shut off water automatically. The Flo by Moen 900-001 installs on your main cold water line (3/4″) and monitors flow, pressure, and temperature 24/7 to catch small leaks before they become big problems. Use the app for live data, alerts, and remote control, or let Flo's diagnostic "Health Tests" check your system for micro-leaks. Works with Amazon Alexa, Google Assistant, IFTTT, and Control4 for whole-home automation.

Brand: Moen (Flo by Moen)
MPN: 900-001
Type: Smart home water monitoring & leak detection system with automatic shutoff (inline valve)
Size/Capacity: For 3/4″ mains (compatible with ≤ 1-1/4″ systems per install notes)
Material/Finish: Valve body with 3/4″ NPT threaded brass tailpieces (included)
Performance: Remote/automatic/manual shutoff; continuous monitoring of flow, pressure, temperature; app modes (Home/Away/Sleep); proactive alerts; on-demand system Health Tests
Connections/Fit: 3/4″ NPT inline install after meter, main shutoff & PRV; requires 2.4 GHz Wi-Fi and nearby AC power (100–240 VAC adapter to 12 VDC); outlet within 6 ft (25′ low-voltage extension cable 920-003 available)
Dimensions: Critical dimensions per spec; allow straight pipe runs per manual (layout-dependent)
Included: (2) 3/4″ NPT brass tailpieces, AC power adapter with 10′ cable, spare O-rings (2), installation spacer, 5/16″ hex key
Certifications/Compliance: IAPMO IGC 349; UL 1951 / CSA C22.2 No.14 & No.68; NSF/ANSI 61/9 & NSF/ANSI 372; FCC Part 15 Class C; ISED RSS-247
Warranty: 1-year limited (extended coverage available via FloProtect)

Our Expert Review: Moen Flo 1" and 3/4" Smart Home Water Monitoring and Leak Detection System

Reviewed by: Expert Mack

Overall Score: 4.0/5

Summary

Having advised homeowners on smart plumbing solutions, I can say the Moen Flo is a game changer in proactive home protection. It strikes a powerful balance between advanced technology and critical home utility. While its high cost and comes with a short warranty, the ability to automatically shut off the water during a catastrophic leak makes it one of the most valuable investments for your home. For homeowners who travel, own second properties, or have high-end finishes, this is a must-have.

Read the Review Read Less Review

Performance: 5/5

The Moen Flo does it's job! The proprietary MicroLeak™ Detection runs daily health tests on your entire system, catching leaks as small as one drop per minute. This level of granular, non-stop monitoring is unparalleled. It doesn't just monitor for floods; it helps you catch tiny, insidious leaks that rack up water bills. Think of the toilet in your basement that you never use, running your water bill up.

User Experience: 4/5

The app is clean, informative, and provides real-time data on water usage, flow, and pressure. Remote water shutoff is a huge win for homeowners on vacation. Installation requires a professional plumber, adding significant cost. Furthermore, the FloSense technology takes time to learn your habits and can occasionally trigger frustrating false positives during unusual high-flow events (like having a party or filling a hot tub, sounds like a party!) You will need to remember to use the sleep mode in the app so your party isn't stopped short because water turned off all of a sudden.

Quality: 3.5/5

The unit feels like a quality piece of equipment. However, the score is lower due to recurring reports from homeowners about the unit failing prematurely after the first year. For a high-cost, high-importance plumbing fixture, the standard one-year limited warranty is simply too short. While many units perform perfectly for years, the uncertainty around long-term durability and the high replacement cost is a concern that must be factored in.

Value: 3/5

The upfront cost of the unit plus professional installation is an investment. For the average homeowner, it's a hard pill to swallow. The value is only realized if the unit prevents a major water event or if you receive a significant, long-term discount on your home insurance premium. For high-risk homes, the value is higher, as a major leak can cost tens of thousands in repairs. Its value is weighted heavily toward catastrophe prevention rather than immediate utility.

Final Verdict

If you are looking for defense against water damage, the Moen Flo 1" Smart Water Monitoring System is a clear winner. The peace of mind offered by the automatic shutoff and continuous MicroLeak detection is worth the price for many. Be sure your Wi-Fi signal is strong where the unit will be installed on your main water line. A weak signal will severely hamper the system's ability to communicate alerts quickly.

Save Water & Prevent Damage

Flo learns your home's water signature and spots anomalies, from dripping fixtures to burst lines. Automatic shutoff and instant alerts help stop damage fast—especially valuable for second homes and rentals.

Everyday Performance You Can See

Check live flow, pressure, and temperature in the app, set conservation goals, and run Health Tests to check for micro-leaks. Use Home/Away/Sleep modes to dial in your protection level.

Durable Materials, Code-Ready

Brass NPT tailpieces and potable-water certifications (NSF/ANSI 61/372) support long-term reliability. Electrical and wireless listings (UL/FCC/ISED) simplify approvals for permitted installs.

Installer-Friendly Inline Design

Mount after the meter/shutoff/PRV on the main cold line. You'll need 2.4 GHz Wi-Fi and a continuously powered outlet within 6 ft (use Flo's 920-003 low-voltage extension if needed). Follow the spec's straight-run guidance for best sensor accuracy.

Smart Home Compatible

Control water and receive alerts through the Moen Smart Water app, plus voice and automation via Alexa, Google Assistant, IFTTT, and Control4.

Built For Real-World Pressures

Rated to a maximum operating pressure of 175 psi; Moen recommends locating the device after a pressure regulator where required. Verify local code and site pressure before installation.

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