Flo by Moen costs $500 and will text you about every toilet flush. Here's when that's actually useful.
Your friend got a Flo water monitor installed and now won't shut up about it. You're wondering if you need one, or if this is just the Ring doorbell thing all over again.
What These Things Actually Do
Smart water monitors (Flo by Moen, Phyn Plus) install on your main water line and track every drop of water flowing into your house.
Toilet running at 2 AM? You get a phone alert. Pipe burst while you're at work? It shuts your water off automatically. Someone left the hose on? The app knows.
Charlotte Homes That Actually Need One
You travel a lot: Nothing worse than coming home from vacation to a flooded basement. These systems shut off water the second something's wrong.
Your house is old: Charlotte's full of beautiful 1950s homes with original plumbing. A $500 monitor beats a $15,000 water damage claim.
You have a second home: Lake house sitting empty? Frozen pipes won't notify you—but Flo will, before they burst.
The Honest Cost Breakdown
Flo by Moen: ~$500 + installation ($200-400)
Phyn Plus: Similar price, similar features
But here's the thing: Insurance companies love these. Some give you 5-10% off your homeowners insurance just for having one installed. Over 10 years, that can cover the whole cost.
When You Don't Need One
Brand new house with PEX plumbing? You're probably fine without it.
Someone's always home and you check your water bill regularly? Save your money.
Apartment or rental? Your landlord should be paying for this, not you.
The Verdict
If one pipe burst would ruin your month (or your floors), get the monitor. If you're handy, check your plumbing regularly, and are home most days? Eh, maybe skip it.
Either way, it beats finding out about leaks the expensive way.
Do Smart Water Monitors Actually Save Money?
Smart water monitors like Flo by Moen, Phyn, and Flume promise to detect leaks instantly and shut off your water automatically. After installing dozens of these in Charlotte homes, here's our honest take: they're worth it for some homeowners, but not everyone.
Who Should Get One
- Frequent travelers — if your home sits empty regularly, a leak can run for days undetected
- Owners of older homes (pre-1990) — aging pipes fail without warning. Auto-shutoff prevents catastrophic damage
- Homes with a history of leaks — if you've had a leak claim, your insurance may require or incentivize a monitor
- Vacation homes or rental properties — remote monitoring saves you from discovering a week-old flood
Who Doesn't Need One
- New construction (less than 10 years old) — your pipes are fine. Save the $500
- Homes with accessible shutoff valves — if you can reach your main valve easily, manual shutoff works
- Budget-conscious homeowners — a $12 water alarm under each sink catches 80% of leaks at 2% of the cost
We install all major brands. If you want our recommendation, Flo by Moen has the best app and the most reliable auto-shutoff. Budget $400-600 for the device plus $200-300 for professional installation on your main water line.




