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Leak Detection

The Leak That Ran for Nine Days While They Were in Ohio, and the Valve That Would Have Stopped It in Four Minutes

They left for two weeks in June. The water heater in the garage started weeping on day five. By the time a neighbor noticed, the drywall was gone and so was the flooring. Here is the device that would have shut the main off in four minutes, and the insurance credit most Florida homeowners do not know they qualify for.

By Justin Thurow July 28, 2026 · 9 min read

A couple off Ridge Road in Port Richey went up to Ohio for two weeks in June to see grandkids. Their water heater was eleven years old and sitting in the garage, which is where most of them sit around here. Somewhere around day five the tank started weeping at the bottom seam. Not a burst. A weep, maybe a gallon an hour, which is roughly what a garden hose does at a trickle. Nine days later a neighbor walking the dog noticed water coming out from under the garage door and called them. By then the garage drywall was soaked four feet up, the water had found the interior wall it shared with the guest bedroom, and the laminate in two rooms had curled and lifted. Insurance covered most of it. What insurance did not cover was the deductible, the two and a half months of contractors in the house, and the smell of a dehumidifier running in July. The first thing their agent said on the claim call was a question about whether they had a water shutoff device. They did not know what that was.

What the device actually is. An automatic water shutoff valve is a single unit that installs on your main water line, usually just downstream of the meter or right where the line enters the house. Inside it there is a flow meter, a pressure sensor, a temperature sensor, and a motorized ball valve. It watches every drop of water that enters your home, all day, and it learns what normal looks like at your house. A shower is a recognizable shape. A toilet flush is a recognizable shape. Nine hours of continuous half gallon per minute flow at three in the morning is not any shape a human makes, and when the device sees that, it pushes an alert to your phone and, if you have it set to do so, closes the valve on its own. Four minutes of thinking about it, then the water is off and the house is done taking on water.

This is not the same thing as the little pucks. People conflate these two constantly and they are not close. A leak sensor puck is a twenty five dollar disc you set on the floor behind the toilet or under the sink, and when water touches it, it beeps or sends a notification. Pucks are fine. We are not against them. But a puck only knows about water that reaches the exact square inch of floor where you put it, and it cannot turn anything off. The failures that ruin Florida houses do not politely present themselves at a puck. A slab leak runs sideways under the concrete for weeks. A pinhole in copper in a wall runs down the inside of the stud bay. A weeping water heater in a garage with a floor drain does not pool anywhere useful. The main line device does not care where the leak is. It only cares that water is leaving the meter and not coming back, and that catches everything downstream of it.

Why this matters more in our service area than most. Two reasons, and they stack. The first is what our houses are made of. We have written about pinhole leaks in Trinity copper, cast iron rotting out under older Port Richey slabs, and slab leaks across Pasco County, and the common thread in all three is that the failure is slow and hidden and you find out late. The second reason is that a very large share of the homes in Port Richey, Hudson, Spring Hill, and Brooksville sit empty for months at a time. Half our snowbird customers leave in April and come back in October. An empty house does not notice a leak. Nobody hears the water running, nobody sees the meter spin, and nobody smells anything until it is mold. A device that closes the main at two in the morning in July while the owners are in Michigan is the entire difference between a four hundred dollar repair and a forty thousand dollar remediation.

The insurance credit, described honestly. A lot of Florida carriers now offer a premium credit for an automatic water shutoff device, and the range most commonly quoted is five to ten percent off the homeowners premium. That is real money on a Florida premium and it changes the payback math on the device considerably. It is also not universal, and this is where I want to be careful, because I have seen homeowners buy a device off the internet on the assumption of a discount and then find out their carrier does not offer one. The rules differ by carrier. Some will credit any UL listed device. Some require that a licensed plumber install it and will ask for the invoice as proof. Some require the device to remain actively monitored and connected. A few limit eligibility to specific models, with Flo by Moen and Phyn Plus being the two names that come up most often on approved lists.

So call your agent first, not last. Three questions, in this order. Does my carrier offer a water shutoff or leak detection credit on my policy, and how much is it. Does the device have to be professionally installed by a licensed plumber, or is a self install acceptable. Is there a specific list of approved devices or does any UL listed automatic shutoff qualify. Five minutes on the phone before you spend anything. If the answers are good, you buy the right device once. If your carrier does not credit it, the device may still be worth it on the risk alone, but you will make that decision with your eyes open instead of finding out at renewal.

What it costs in Pasco and Hernando. The device itself generally runs five hundred to eight hundred dollars depending on the model and the pipe size. Our fixed installed price, including the device, the plumbing, the shutoff valves on either side so it can be serviced later without killing water to the house, and setting it up on your wifi and your phone, runs $1,250 to $1,850 for a typical single family home in our area. The spread depends almost entirely on where your main enters and whether there is an accessible section of pipe to work with. Garage entry next to the water heater is the easy version. A main that disappears into a slab or comes up behind finished wall is the expensive version. Here is a piece of practical advice we give constantly: this device wants to live in the same spot as a pressure reducing valve, so if you do not have a PRV yet, or yours is due, do both in one visit and one wall opening. We covered why that PRV matters in the Spring Hill story about ninety two PSI.

What they actually catch, based on our callbacks. The dramatic burst pipe is not the common alert. In the homes we have installed these in, the number one thing they catch is a toilet flapper that has started passing water, which most homeowners never hear and which quietly adds thirty or forty dollars a month to a water bill. Number two is an irrigation break, usually a cracked lateral out in the yard that nobody sees because it only runs at five in the morning. Number three is exactly what happened to the couple in the story, a water heater that has begun to weep before it fails outright. The pressure monitoring models also run an automated overnight pressure test, closing the valve for a few minutes while the house is quiet and watching whether pressure holds, which is how you find a leak before there is anything to see.

The honest caveats. Three of them. First, the device needs power and wifi to alert you, so put it on your network properly and consider a small battery backup, because a Florida power blip should not blind your leak protection. Second, it can nuisance trip on a legitimate long draw, filling a pool or running a long irrigation zone, and the fix is adjusting the settings rather than deciding the thing is broken. Third, and this is the one I want people to hear, a shutoff valve is a smoke alarm and not a fire code. Putting one on a house full of 1998 Type M copper does not fix the copper. It limits the damage when the copper does what it is going to do. If your home is in the window for a repipe, the valve is a good companion to that project, not a substitute for it.

The paperwork your agent will want. When we finish an install we leave you with the paid invoice listing the make, model, and serial number of the device, a line stating it was installed by a licensed plumbing contractor with our license number on it, and photographs of the installed unit on the main line. That is the package carriers ask for. Send it to your agent the same week and ask them to apply the credit to your policy rather than waiting for renewal, because in most cases it can be endorsed mid term.

If you travel, if your house sits empty part of the year, if you have older copper or cast iron, or if your agent has already mentioned a leak detection credit and you did not know what they meant, call our office at (727) 842 4663 and a real person will pick up. We install and set up automatic shutoff devices across Port Richey, Hudson, Trinity, Spring Hill, and the rest of Pasco and Hernando County, usually in a single visit. The broader leak detection work we do, including finding the leak you already suspect, is one click away.

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FAQs

Common questions on this topic.

Quick answers from our expert plumbers. Still have a question? Call our team and a real person will pick up.

01 Do Florida insurance companies give a discount for a water shutoff valve?
Many do. The credit most commonly quoted is 5 to 10 percent off the homeowners premium for a UL listed automatic water shutoff device. It is not universal and the requirements vary by carrier. Some accept any UL listed device, some require professional installation by a licensed plumber and will ask for the invoice, some require the device to stay actively connected and monitored, and a few limit eligibility to specific models. Call your agent and confirm before you buy anything.
02 How much does it cost to install an automatic water shutoff valve in Pasco County?
Our fixed installed price runs $1,250 to $1,850 for a typical single family home, which includes the device, the plumbing, isolation valves on both sides so it can be serviced later, and setup on your wifi and phone. The main variable is access. A main line entering through the garage is the straightforward version, while a main buried in slab or behind finished wall costs more. Every quote is fixed in writing before we start.
03 What is the difference between a leak sensor and an automatic shutoff valve?
A leak sensor is a small puck you place on the floor that alerts you when water touches it. It cannot turn the water off and it only detects water that reaches that specific spot. An automatic shutoff valve installs on your main water line, monitors all flow into the house, and closes a motorized valve when it detects a leak pattern. It catches leaks anywhere downstream, including slab leaks and in wall leaks that no floor sensor would ever find.
04 Will a smart shutoff valve work while I am out of town?
That is the situation it is built for, and it is the reason we recommend them so strongly to snowbird households in our area. As long as the device has power and an internet connection, it keeps monitoring and can close the valve automatically without anyone home. It also sends the alert to your phone wherever you are. We recommend putting it on a small battery backup so a brief power outage does not leave the house unprotected.
05 Does a water shutoff valve replace the need for a repipe?
No. A shutoff device limits the damage from a failure, it does not prevent the failure. If your home has aging Type M copper, polybutylene, or failing cast iron, the pipe is still going to fail and the device only shortens how long water runs before someone stops it. Think of it as a companion to a repipe rather than an alternative. Many homeowners install one during or right after a repipe to protect the rest of the system.
06 Can I install a smart water shutoff valve myself?
Physically, some models are designed for handy homeowners. Practically, there are two reasons to have a licensed plumber do it. The install cuts into your main water line, which means a mistake floods the house you are trying to protect, and many insurance carriers require professional installation with a licensed plumber's invoice before they will apply the premium credit. If the discount is part of your reasoning, a self install can disqualify you from it.

Have a more specific question? Contact our team or give us a call.

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