What to know
- Plumbing failures — not storms — are the #1 cause of residential house floods in the U.S. Flo watches the main line so a silent failure becomes a shutoff and an alert.
- Automatic protection: FloSense learns your home's usage patterns and closes the main line on its own when flow doesn't match — even at 2 AM with everyone asleep.
- Daily MicroLeak pressure tests catch the tiny drips — a pinhole leak or a weeping fitting — down to about one drop per minute, before they become damage.
- Measures actual water movement (flow, pressure, temperature) in the line — with freeze-condition alerts for cold snaps.
- No subscription required for core monitoring and auto-shutoff; the optional FloProtect plan adds extended warranty and deductible-coverage benefits.
- A professionally installed unit may qualify for homeowner's insurance discounts — many carriers offer them; ask yours.
- Installed, calibrated, and documented by licensed Eco plumbers.
How does Flo know a leak from a long shower?
The device measures every drop that enters the house and learns what normal looks like for your household — shower lengths, laundry days, irrigation windows. When flow appears that matches no learned pattern (a burst washing-machine hose at 2 AM, a failed water heater tank, a line that never stops running), it sends a critical alert and closes the valve automatically if the alert isn't cleared. You can also shut the water off yourself from the app, anywhere.
What does the daily MicroLeak test catch?
Big failures announce themselves; slow leaks hide. Once a day, at a time you're unlikely to use water, the device briefly closes its valve and watches line pressure. If pressure holds, your plumbing passes. If it drops, something is leaking — even a drip too small to register as flow, down to about one drop per minute per Moen's documentation. That's how a weeping fitting behind a wall or a running toilet flapper gets caught weeks before the ceiling stain.
What does Flo need to work?
The practical requirements, straight from Moen's published specs:
- A compatible main line: Moen makes models for ¾-in up to 1½-in pipe — we confirm your line size before ordering.
- 2.4GHz Wi-Fi at the install point and a nearby AC outlet (a 10-ft cord ships in the box; extensions are available).
- During a power or Wi-Fi outage the valve stays in its last position and you lose remote control — an optional battery backup covers outages; if you want protection that runs entirely without house power or an app, that's FloLogic's lane.
- Manufacturer warranty is 1-year limited; the optional FloProtect subscription extends it and adds an insurance-deductible benefit for qualifying water damage.
What does professional installation cover?
A smart shut-off only protects the home if it's set up for how that home actually uses water. Eco's licensed plumbers confirm main-line access and pipe compatibility, verify power and Wi-Fi at the install point, set up bypass handling so water-softener regeneration and irrigation cycles aren't flagged as leaks, calibrate Home/Away sensitivity to your household, walk you through the app, and document the install — which is what many insurers require to apply a leak-protection discount.
Who should choose something else?
Honest fit guidance:
- Want monitored-security integration, battery-backed operation, or the most sensitive detection tier? That's FloLogic — the step-up system we also install.
- No reliable Wi-Fi at the mechanical space, or a smart-home-free household? A quality manual valve and leak sensors may serve you better than a connected device you won't use.
- Renters need the landlord's sign-off — this is a plumbing modification on the main line.
Why does leak protection matter in Puget Sound homes?
The failures that flood houses are ordinary plumbing: burst pipes, water heater failures, washing-machine supply hoses, toilet supply-line overflows, and dishwasher or refrigerator water lines. Our region's older housing stock means those lines are often tucked into closets, attics, and crawlspaces where a slow leak can run unnoticed for weeks. An automatic shut-off turns a potential five-figure claim into a minor repair — on duty when you're at work, asleep, or away.
Ready for the next step?
Talk to a licensed Eco pro — honest guidance and upfront pricing before any work begins.
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Common questions
Will Flo by Moen shut my water off by mistake?
Not when it's installed and calibrated correctly. It learns your household's normal usage, softener and irrigation cycles are accounted for so they aren't flagged as leaks, and Home/Away sensitivity is tuned to your home during the install. If a false trigger ever happens, you reopen the valve from the app in seconds.
Does it qualify for an insurance discount?
It may — many carriers discount premiums for a professionally installed automatic shut-off because water damage is one of their most common claims. Insurers often require proof of professional installation, which is part of what Eco documents for you. Check with your agent for your policy's specifics — we'd rather you verify than count on it.
What happens during a power or Wi-Fi outage?
The valve holds its last position and you temporarily lose remote control and alerts until service returns. Moen offers a battery backup accessory for outage coverage. If outage-proof operation is a hard requirement — generator-free cabins, frequent storm outages — ask us about FloLogic, which runs on battery backup by design.
Flo by Moen or FloLogic — which one is right for my home?
Flo by Moen is the home standard: app-based automatic protection with daily microleak tests and no required subscription. FloLogic is the monitored tier — the most sensitive detection, battery backup through outages, and security-system integration, at a higher installed cost. We install both and will recommend the right fit during a free assessment.
Can I just rely on my manual shut-off valve?
A manual quarter-turn valve is reliable — when someone is home to close it. It can't detect a leak, alert you, or act while you're away, and that's exactly the gap an automatic system closes. If your main valve is old or seized, we can address that during the same visit.