Product Library / Water Protection & Plumbing

Moen Flo Smart Water Shutoff

Compiled by SmartHomeWorkflow Research · Flo by Moen · Water Protection & Plumbing · ~$623.99 ($623.99 for the 3/4" (part number 900-001) in Moen's own store, checked 2026-08-13 and re-checked unchanged on 2026-09-17 — never treated as a live price. The other bore sizes are $675.99 for the 1" (900-006) and $1,039.99 for the 1-1/4" (900-002); all three read as available. ⚠ PRICES ROSE ACROSS THE WHOLE LINE since 2026-07-19, when the same three were $599.99 / $649.99 / $999.99 — about 4% on each. Street pricing has historically diverged sharply from Moen's list, so the figure recorded here is Moen's own.)

Compatibility

? Inconclusive means we researched that ecosystem and the evidence doesn’t settle it — the catch says why, and the sources are listed below. It is a statement about the available evidence, never a verdict on the product. A Setup Check researches your exact setup where the official sources don’t answer.

Protocols: WIFI^[4][16]

What it can do^[21]

Some of these may need a paid plan — see Subscription reality below.

Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.

Subscription reality^[5][32]

◐ Works without a subscription: Yes. The maker also sells an optional paid plan.

• Free: Automatic shutoff (FloSense) — the core protective behaviour, Leak alerting via app, phone and email, Daily automatic MicroLeak / Health Test, Water usage, flow, pressure and temperature data, Remote valve open and close, and Home/Away/Sleep modes
• Behind a plan: Extended limited warranty to 5 years from installation, Performance Guarantee — up to $5,000 reimbursement of a homeowner's insurance deductible (from $5/mo)
• 5-year cost if you add the plan: ~$300 at $5/mo — price verified 2026-09-17

Vendor account required: Not established — we have not sourced this yet.

The value here runs BACKWARDS from what most buyers assume, and a lot of published blog copy gets it wrong: you are not paying for protection, you are paying for reimbursement if the protection fails. Moen states plainly that 'There is no monthly fee to operate your Moen Flo Shutoff and you can access all the features and your water usage data in the app for free' — automatic shutoff is free. FloProtect at $5/month buys a warranty extension and a deductible guarantee, both financial rather than functional. The fine print bites in three places: Moen's own terms state 'FloProtect is a Product warranty provided by the Company and is not insurance'; the $5,000 guarantee only pays if the device failed to notify or shut off AND was properly installed, connected to Wi-Fi, active at the time, and current on payments, with acts of nature and the initial learning period excluded; and cancelling permanently forfeits the extended warranty, which re-subscribing does not restore. Claims that FloProtect also includes live support and enhanced usage data appear in secondary sources but not in Moen's terms, and are not recorded here.

Maintenance reality^[4][10][11]

• Works without the internet: Inconclusive — we read the vendor's own material and it does not answer this either way. It does not mean the product fails without the internet.
• Mains AC required continuously, from an outlet within 6 ft per the spec sheet (marketing says 10 ft; 25 ft extensions are sold). There is no built-in battery — backup is a separate purchase, and it carries recall history worth knowing: CPSC and Moen recalled ALL Flo Lithium-Ion Battery Back-Ups (model 920-001) on 2023-04-13 for a fire hazard, roughly 10,000 units sold between 2019-08-30 and 2022-11-18, after three overheating or fire reports with no injuries, and the remedy was refund only — Moen did not replace them. A different SKU (920-008, up to four hours) is sold today, but no primary source designates it as the recall replacement, so that link is not asserted. Power loss is distinct from internet loss: with no power the valve HOLDS its last position rather than failing closed, so there is no protection at all. A physical backup shutoff lever on the device body always works. The Health/MicroLeak test closes the valve and watches pressure decay for 30 seconds to 4 minutes, once daily by default and up to three times, detecting down to one drop per minute — and Moen states that disabling it may void both the product warranty and the FloProtect deductible. No filters or consumables, though well and irrigation installations need a 100-mesh wye strainer with periodic cleaning.
• Security updates: No security-update support date is on record for this model yet. We haven't yet checked whether Flo by Moen publishes one, so this is a gap in our research — not a statement about the manufacturer.

The catch

Four surprises, in order of how badly they land. The integration layer is mid-collapse. Moen retired the app the enthusiast ecosystem was built on, Home Assistant's official integration is broken for anyone who signed up or migrated recently and the fault is still open, and the Homebridge route into Apple Home connects the same unofficial way — so if you are buying this to automate at home, the answer today is probably no. It is a cloud product with real local fallback, but Moen will not quite say how much. The company confirms monitoring continues and data is stored locally during a Wi-Fi outage, yet its own Wi-Fi FAQ is conspicuously silent on whether AUTOMATIC SHUTOFF still fires while the internet is down, and outside sources contradict each other. A power cut is worse than an internet cut, because the valve holds its last position rather than closing. The subscription is the opposite of what most people assume: you pay for reimbursement if the protection fails, not for the protection itself, and cancelling forfeits the extended warranty permanently. And it cuts into your main water line — so it is neither a renter's product nor a reversible purchase.

Who it's for

Homeowners with an accessible main and a nearby outlet whose real fear is a burst supply line or a slow hidden drip rather than one specific appliance, and who want protection that works out of the box with no subscription and no sensor-placement guesswork. It suits anyone whose insurer offers a leak-mitigation discount, though Moen itself only offers a verification letter and points you at your insurer rather than promising anything. It is a poor fit for renters, for homes whose main is inaccessible or outdoors in freezing conditions, for homes with fire sprinklers on the same branch, for Apple Home households, and — right now especially — for Home Assistant and local-control users. Treat it as a complement rather than a substitute for point sensors: it detects supply-line anomalies, not a puddle under the dishwasher.

Sources & method

Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →

Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.

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