Best Water Leak Detectors Guide & Reviews of 2021

The last things people want for their homes are leaks, and yet, many families lack a proper water sensor or alarm. The cost of unpreparedness will far outweigh any initial fees involved in securing a damage-prevention kit. Plus, this list of 2021’s best water leak detectors will make it easy to protect the home, no matter the budget or property size.

Emily Brooks

Emily Brooks - Editorial Staff

Updated: March 3, 2021

What We Did to Find the Best

It’s hard to find the top water leak detectors when there are dozens of options on the market. That’s where our team stepped in. They pored over the reviews, feedback, and manufacturer descriptions to get the inside scoop.

To figure out which detectors came out on top, they looked at a few key metrics. This includes features that are popular with customers, such as 24/7 updates, integrations, and easy installation. It was also crucial to consider pricing and client support.

  • Features

    0-10

    monitoring period, 24/7 alerts, disaster protection etc.

  • Support

    0-10

    telephone, email, chat, and other channels

  • Price

    0-10

    monthly fee, money-back, trial period

  • Ease of Use

    0-10

    installation, maintenance, service support

  • Trust Score

    0-10

    BBB.org and Trustpilot (positive, negative reviews)

By taking the time to look through each water leak detector, we were able to create an accurate list of contenders. This way, consumers can save time (and money) on a product that will boost their confidence and environmental safety.

1. Vivint Water Sensor: Durable Overall Protection

Total Score 9.8/10

Vivint Main
24-7 Professional Monitoring Vivint
  • Features10/10
  • Equipment10/10
  • Price9.0/10
  • Ease Of Use10/10
  • Trust Score10/10

Starting Price

$ 100

Visit Website
BBB Rating B
Best for Overall Protection

DIY instal

NO

Trial Period

30 days

This water alert monitor from Vivint is battery-powered, so it can go anywhere in the home. That flexible placement allows clients to put it in the bathroom, kitchen, or basement to get a head-start on detecting any leaks.

Even if they’re not home, the companion app will notify them so they can take action right away. They can also use mobile control to set up a freeze alert, as the device monitors temperature and moisture, too.

Pros:

  • Automatic mobile updates
  • Compact design
  • Flexible placement
  • High sensitivity
  • Moisture & temperature monitoring
  • No activation fees
  • Tamper-proof

Cons:

  • Expensive
  • Requires a Vivint contract
  • Professional set-up only

The Vivint detector is sensitive to tampering, so it’s great for households with young children or pets. The sensitive detection can recognize 1/4″ of liquid, and the automatic mobile updates ensure that nothing goes unnoticed.

The accessory has a battery life of three to six years, and there is a free replacement for customers on the protection plan. Professional installation is required, but there are no activation fees.


2. ADT Flood Sensor: Wireless, Worry-Free Placement

Total Score 9.6/10

ADT Main
Adt Sensor
  • Features9.0/10
  • Equipment9.5/10
  • Price9.5/10
  • Ease Of Use10/10
  • Trust Score10/10

Starting Price

$ 23

Visit Website
BBB Rating A
Best for Battery Power

DIY instal

NO

Trial Period

6 month

The ADT water sensor runs on 3V batteries and lasts up to 10 years. The company’s trained technicians will set it up for clients, so there aren’t any concerns about proper installation. Moreover, the wireless transmitter can communicate with the ADT security hub.

However, that means that it requires a complete system. The upside here is that everything is professionally monitored, so there’s no way clients will miss leaks or excess moisture.

Pros:

  • Automatic notifications
  • Flexible placement
  • Freeze detection
  • Low power consumption
  • Mobile control
  • Tamper-resistant cover
  • Worry-free installation

Cons:

  • Monthly fee applies
  • Professional set-up only
  • Requires ADT security hub

As part of the ADT security system, clients can take a peek at their in-home cameras to see where exactly the leaks are. For reference, the basic “Essentials” package costs $27.99 per month.

The smartphone access allows customers to turn the alarm off even if they’re away from home. They will also receive automatic mobile notifications if something goes wrong. Overall, this water detector is thin and discreet with a tamper-resistant cover and low power consumption, making it a great deal.


3. Frontpoint Flood Sensor: A Great DIY Option

Total Score 9.4/10

Frontpoint Review
Frontpoint Water Leak
FrontPoint Safe Home Select
  • Features10/10
  • Equipment9.0/10
  • Price9.0/10
  • Ease Of Use9.0/10
  • Trust Score10/10

Starting Price

$ 24.99

Visit Website
BBB Rating A+
Best for DIY System

DIY instal

YES

Trial Period

30 days

Frontpoint is known for its easy, do-it-yourself systems, and its water leak detector is no exception. Wireless and durable, it features a loud siren that will let families know about leaks before they become huge problems.

It features a simple design and sits on the floor for better water leak detection. It is priced at $24.99, but there is a 2021 deal for $18.74.

Pros:

  • Corrosion-proof
  • Reasonable price
  • Instant smartphone notifications
  • Loud siren
  • Mobile access
  • Simple floor design
  • Wireless

Cons:

  • High monthly rates
  • No temperature monitoring
  • Requires Frontpoint's security system

Frontpoint’s water leak detector is corrosion-proof and will stand the test of time. Be aware that it does require Frontpoint’s security system. There aren’t any contracts, but the lowest monthly price is a bit higher than competitors.

Every kit comes with a base station and keypad that wirelessly connects to all of the devices, including the detectors. This way, the second a puddle or excess moisture shows up, customers will know about it.


4. LeakSMART Water Leak Detection Kit: A Complete Smart Package

Total Score 9.4/10

LeakSmart Main
  • Features9.0/10
  • Equipment10/10
  • Price8.0/10
  • Ease Of Use10/10
  • Trust Score10/10

Starting Price

$287

Visit Website
Best for Smart Tech

DIY instal

NO

Trial Period

30 days

This water leak detection kit is the total package. What’s unique about this kit is that it comes with a shut-off valve so clients can quickly turn everything off and prevent further damage. The complete kit includes a system hub, a shut-off valve, and one water sensor.

All of this is great, but it comes at a huge price tag. For those who want to start with just the water sensor, they’ll still be dropping $70.

Pros:

  • Auto shut-off valve
  • Clear, distinct sounds
  • Complete kit
  • Insurance rebates available
  • Mobile control
  • Smart integrations
  • Wireless

Cons:

  • Requires professional set-up
  • Some clients report connectivity issues
  • Very expensive

Yes, this water leak detection kit is pricey, but customers may qualify for insurance rebates, so that’s a plus. Also, the package is compatible with Nest, SmartThings, Z-Wave, and more.

The instant mobile notifications and wireless flexibility make it a top choice for those who want maximum protection. It’s also one of the few options that include alarm sounds. Given all of the parts and components, professional set-up is required.


5. SimpliSafe Water Sensor: Affordability & Accessibility

Total Score 9.4/10

SimpliSafe Main
No Contaract SimpliSafe Features
  • Features9.0/10
  • Equipment9.0/10
  • Price10/10
  • Ease Of Use9.5/10
  • Trust Score9.5/10

Starting Price

$ 19.99

Visit Website
BBB Rating A+
Budgets

DIY instal

YES

Trial Period

60 days

SimpliSafe’s water leak detectors are one of the most affordable options out there. The adhesive, stick-and-go design makes it super easy to set up. Plus, it’s wireless, so clients can put it just about anywhere.

The water sensor is part of the larger ADT security system, which starts at $15 per month. This is a relatively low monthly rate compared to others.

Pros:

  • Affordability
  • Automatic text/email notifications
  • Easy stick-and-go design
  • Free shipping/returns
  • Mobile access
  • Smart device compatibility
  • Wireless

Cons:

  • Clunky design
  • Freeze and water sensor sold separately
  • Requires SimpliSafe security system

Something to be aware of is that SimpliSafe sells freeze and water sensors separately. The costs are $29.99 and $19.99, respectively. This is a bit of a bummer considering that other home monitor alerts also include temperature monitoring.

That said, the company offers free shipping and returns, and the overall price is quite affordable. The design is a bit clunky, but it’s still a good deal and will reliably send automatic text and email notifications.


6. Fibaro Flood Sensor Z-Wave Plus: Amazing Automation

Total Score 9.3/10

Fibaro Main
Fibaro Design
Fibaro Product
  • Features10/10
  • Equipment9.0/10
  • Price9.0/10
  • Ease Of Use10/10
  • Trust Score8.5/10

Starting Price

$ 49.99

Visit Website
Best for Automation

DIY instal

YES

Trial Period

60 days

The Fibaro Flood and water sensor aim to put itself in a class of its own. It works with several Z-Wave accessories as well as the SmartThings system and other third-party devices.

The wireless design and available additional probes make it easy to place anywhere. Along with its siren, it can detect temperature changes and tilts, too. This makes it great for sinks, dishwashers, and doors to the outside. It can even work in various outdoor climates.

Pros:

  • Audible sounds
  • Detects uneven surfaces
  • High sensitivity
  • Great price
  • Smart integrations
  • Waterproof
  • Withstands various climates

Cons:

  • Difficult set-up
  • Inconsistent connection
  • Requires some tech know-how

If an incident occurs, the sleek detector lights up and sounds an audible siren. The 24k gold-plated probes allow for higher sensitivity. Even if it falls in a puddle, this water sensor will still work.

It’s corrosion and scratch-resistant and has tamper protection. If customers choose, it integrates seamlessly with the Fibaro security system.


7. Honeywell Lyric WiFi Water Leak & Freeze Detector: Stellar Standalone Service

Total Score 9.2/10

Honeywell Home Main
Honeywell Smart Home
Honeywell Water Leak
  • Features9/10
  • Equipment9/10
  • Price8/10
  • Ease Of Use10/10
  • Trust Score10/10

Starting Price

$ 79.99

Visit Website
BBB Rating A+
Best for Standalone Service

DIY instal

YES

Trial Period

30 days

Honeywell’s freeze and water detector is a great standalone product, and it also works with Amazon Alexa. It’s got a versatile design so customers can place it on the floor or mount it to a wall. It is also mobile-controlled and uses the Honeywell Lyric app, which features a one-touch dashboard.

This makes it easy to see all devices at a glance and program different settings or controls. Plus, no base station is required. Rather, it’s ready to go right out of the box.

Pros:

  • Amazon Alexa-compatible
  • Audible siren
  • Durability
  • Expandable cable
  • Standalone service
  • Temperature monitoring
  • Versatile design

Cons:

  • A bit pricey
  • Customers report connectivity issues
  • Requires Internet access

This water leak detector requires a WiFi connection. Some customers have reported connectivity issues, so keep that in mind. That said, the device is made of hardy materials, so it’s still usable after an incident.

It also comes with a sensitive cable that allows for expandable coverage behind appliances. It’s a bit pricey, but it also comes from a reputable Fortune 100 company.


8. Phyn Plus Smart Water Assistant: Education & Analysis

Total Score 8.8/10

Phyn Main
Phyn Installation
Phyn Works
  • Features8.0/10
  • Equipment8.0/10
  • Price7.0/10
  • Ease Of Use9.0/10
  • Trust Score9.0/10

Starting Price

$ 699

Best for Whole Home

DIY instal

NO

Trial Period

30 days

The Phyn Plus is a smart valve that works with Amazon Alexa, Google Assistant, and IFTTT. It’s super expensive, but that’s because it’s a whole system. It analyzes the property’s pipe supply line and runs a diagnostic plumbing check to ensure there aren’t any drips.

In case of leaks, it can shut off the power supply, thus preventing massive damage. The Phyn app allows clients to shut the system off remotely. It can even monitor multiple properties.

Pros:

  • Education resources
  • Instant mobile notifications
  • Remote shut-off
  • Smart device compatibility
  • Usage charts
  • Whole property protection
  • Wireless connectivity

Cons:

  • Plumber installation recommended
  • Requires WiFi
  • Super expensive

Those who are worried about the cost can hop on a payment plan. It may be well worth it, considering the high-definition wave analysis and educational resources. The water sensor tells users about their water usage and how they can be more resource-efficient.

Likewise, the reports show time, date, and psi. This frozen pipe and water sensor has won several awards, including 2019 Red Dot and German Design Awards. It requires a WiFi connection and the main supply line of 1 1/4″ or smaller.


9. Flo by Moen: An Investment in Lower Utility Bills

Total Score 8.8/10

Flo Main
Flo Water Leak
Flo by Moen Water Leak
  • Features9.0/10
  • Equipment9.0/10
  • Price7.0/10
  • Ease Of Use9.0/10
  • Trust Score10/10

Starting Price

$ 499

BBB Rating A-
Best for Utility Savings

DIY instal

YES

Trial Period

30 days

For those who are looking to save some money on their utility bills, check out Flo by Moen. According to the brand’s website, 60% of new customers discover a pre-existing leak as soon as they install Flo.

That’s pretty impressive and could lead to hundreds of dollars more in their wallets each year. This 3.5″ device observes the household’s water usage and makes helpful tips while also testing the property daily for any leaks.

Pros:

  • All-in-one system
  • Conducts daily leak tests
  • Maintenance alerts
  • Provides money-saving tips
  • Senses freezing temps and humidity levels
  • Small and discreet
  • Tracks water pressure

Cons:

  • Doesn't locate the direct source of leaks
  • No third-party integrations
  • Very expensive

This all-in-one smart water valve covers all the bases while also providing remote and automatic options. Individuals will receive push notifications when there’s a problem, and they can take further action through the app.

The downside is that the system doesn’t pinpoint where exactly the leaks are coming from, just the room that the sensor is in. That said, it does sense the presence of water, excess moisture, cold temperatures, and humidity, as well as regularly tracks water pressure.


10. Samsung SmartThings Water Leak Sensor: Remote Access & Affordability

Total Score 8.6/10

Samsung Main
Samsung SmartThings Water Leak
Samsung Water Leak Sensor
  • Features9.0/10
  • Equipment9.0/10
  • Price7.0/10
  • Ease Of Use10/10
  • Trust Score8.0/10

Starting Price

$ 199.99

BBB Rating B-
Best for Remote Access

DIY instal

YES

Trial Period

30 days

This Samsung SmartThings water leak detector comes at a great price, making it a viable option for most families. It connects to other smart devices, like Zigbee, for a total household surveillance system.

Plus, it works within 130 feet of the base station. This water sensor sends automatic mobile updates and features a sleek and simple design, so it blends into any room. The SmartThings app allows clients to control everything in one spot, even when they’re on the go.

Pros:

  • Automatic mobile updates
  • Device integrations
  • Free shipping
  • Inexpensive
  • Lightweight
  • Simple set-up
  • Very small

Cons:

  • Indoors only
  • Limited temperature range
  • Requires Samsung SmartThings control panel

The Samsung water detector is very small. It looks very much like a bar of soap, making it perfect for bathrooms and kitchens. That said, it is for indoors only. Moreover, it requires the Samsung SmartThings control panel and a WiFi connection.

This adds a fee that comes out to a little under $30 per month. Also, be aware that the water sensor starts to misfire below 32° and above 104° Fahrenheit.


Best Water Leak Detectors of 2021 (Pricing & Features)

Not sure which water sensor to choose? This side-by-side chart will highlight the 2021 prices and features to make it easier to decide. Consumers can compare the ins and outs of each product to determine which one most suits their interests and needs.

Provider Total Score Monthly Plan Price Alarm Sounds Mobile Access Power Source Refund Policy Smart Integrations Temperature Monitoring Warranty Best For
1. Vivint 9.8/10 $29.99 $100 No Yes Battery 30 days Yes Yes 120 days Overall protection
2. ADT 9.6/10 $27.99 $23 No Yes Battery 6 months Yes No 1 year Battery power
3. Frontpoint 9.4/10 $44.99 $24.99 Yes Yes Battery 30 days Yes No N/A DIY system
4. LeakSMART 9.4/10 N/A $287 Yes Yes Battery 30 days Yes No 5 year Smart tech
5. SimpliSafe 9.4/10 $15 $19.99 No Yes Battery 60 days Yes No 3 years Budgets
6. Fibaro 9.3/10 N/A $50 Yes Yes Battery 30 days Yes Yes 2 years Automation
7. Honeywell 9.2/10 N/A $80 Yes Yes Battery 30 days Yes Yes 2 years Stand alone service
8. Phyn 8.8/10 N/A $699 No Yes Battery 30 days Yes Yes 2 years Whole-home
9. Fibaro 8.8/10 $5 $499 No Yes Battery 30 days No Yes 1 year Utility savings
10. Samsung 8.6/10 $27.99 $19.99 No Yes Battery 30 days Yes No 1 year Remote access

Features to Consider When Purchasing a Water Leak Detector

When looking for a water sensor, consumers must know which features will make their lives easier. Here is a review of the top characteristics to consider when browsing through a selection of detectors.

Automatic Shut-Off Systems

A smart water sensor is super convenient but may cost more. The trade-off is that it can turn off the main supply line at the earliest sign of leakage, potentially saving money and preventing damage.

Connection Protocols

Depending on the specific water leak detector, it may require a connection to a larger base station or control panel. If this is the case, be sure to check the system recommendations so that everything syncs up smoothly. Usually, this involves a stable WiFi network.

Easy Installation

This goes without saying, but if the water detector is hard to set up, then that doesn’t bode well for its usage. People need something that’s either plug-and-go or wirelessly connected. Try reading customer reviews to get a better idea of which products offer high performance and reliability.

Extended Battery Life

Look for a water detector with a long-lasting power source. Most of the options in this list rely on a wireless signal but also take batteries. Depending on the manufacturer, these batteries could last anywhere from a year to a decade.

Freeze Monitoring

Just because it’s a water leak detector, that doesn’t mean it can protect against frozen pipes. Be sure to check which products can detect freezing temperatures, or else it may be hard to spot a wintry mess until it’s too late.

Lights

Not all gadgets have light indicators, but it’s a handy feature to have. This way, a simple glance at the product can reveal if it’s functioning or if the batteries are running low.

Plug-In Sensors

While most of these devices run on batteries, others plug into a wall outlet. In that case, it’s important to check for a backup power source. If the electricity goes out, the house should still be protected.

Power Source

The accessories on this list run off of batteries, but it’s not uncommon to find a hardwired water sensor. If that’s the case, be sure that it’s a feasible option for the property.

Smart Home Integrations

This isn’t mandatory, but these days it is important to many families. Since lots of households already have smart gadgets in place, it makes sense to choose a water sensor that’s compatible with the system.

Temperature Monitoring

Odd as it may seem, not every water detector monitors temperature changes. Keep this in mind while shopping. A gadget that tracks changes in heat or cold can help determine whether pipes are frozen. That translates into superb disaster prevention.

Water Detection & Alerts

Not all notifications are created equal. Some of them send an update as soon as excess moisture is present, or if the temperature suddenly plummets. Others wait until there is already a puddle.

Pros & Cons of Water and Flood Sensors

As with any household device, there are advantages and drawbacks to these sensors. Those who are on the fence about purchasing one should check out the potential benefits. Likewise, it’s important to understand the risks and pitfalls as well.

Pros

These nifty little accessories are small but mighty. Besides their looks, they offer quite a few benefits.

  • Automatic Updates: many home humidity alerts send instant updates to the customer’s phone, computer, or tablet. These texts and push notifications ensure that no detection goes unnoticed. Many of these systems also offer remote access, so it’s easy to shut off the power or disconnect the device with the push of a smartphone button.
  • Avoid Wintry Disasters: the colder months often lead to frozen pipes that could burst at any moment. A freeze alarm can help people tackle that problem before it becomes a full-fledged repair cost.
  • Long-Term Protection & Savings: at the end of the day, these accessories lead to greater monetary savings. They prevent small issues and leakages from becoming full-fledged problems, which can translate to thousands of dollars saved.
  • Save Money on Repairs: even if a repair is necessary, it’s bound to be much cheaper than it would be without a water detector to sound the alarm earlier.

Cons

While there are lots of advantages to using these types of devices, they aren’t without their pitfalls.

  • The Disparity in Quality: the downside to these products is that there is a wide range in how compatible and reliable they are. In some ways, customers will get what they pay for. A cheaper model may have connectivity issues or misread moisture and temperatures. Others may be made of shoddy materials that can’t stand up to humidity, tampering, or other environmental hazards.
  • Upfront Costs: keep in mind that upfront charges are often involved. Those who are on a strict budget may have to hold off on this kind of protection.

Frequently Asked Questions

  • How Do Water Leak Detectors Work?

    They contain sensing information and modules that pick up on excess moisture or flooding. Some can even detect rising or falling temperatures and notify users promptly. Regardless of the brand, they typically work in a similar way.

    • The sensors hook up to the property’s shut-off valve.
    • They connect to the household’s WiFi to allow for remote access and control.
    • When moisture or plummeting temperatures are detected, the system sounds to let clients know. Some of them can turn off the main supply line automatically.

  • Where Can I Install a Water Leak Detector?

    Using these products is simple, and setting them up is often quite easy.

    Here are some places to put them:

    • Above a sink
    • Behind a toilet
    • Next to a washing machine
    • Behind the dishwasher
    • Near pipes and supply lines

  • How Many Water Sensors Do I Need?

    It depends on how big the house is and how many appliances or rooms the person wants to protect. For example, someone may want to keep a device in the bathroom, but they might also want one in the kitchen. In this case, they need two separate gadgets.

    Another option is getting a smart sensing system, which connects throughout the property.

  • How Can I Check If I Have a Water Leak?

    There are a few things people can do.

    • First, take a look at the main supply line and check for clogs, corrosion, and broken seals.
    • If winter and colder temperatures are approaching, then be sure to keep a closer eye on things.
    • Another thing is to consistently check utility bills for any strange charges or uptick in costs.

  • Can You Rent a Water Leak Detector?

    Yes, it is possible to rent this type of equipment, although it’s much more common to purchase it. That said, if someone is renting a property or doesn’t want to commit to a purchase, then they can borrow a device.

    Individuals can check their local home improvement store to see what’s available.

  • Why Is There Water Coming Through My Walls?

    There could be a few different things going on.

    • First, there might just be a crack in the wall. Alternatively, there could be moisture and liquid trapped in the ground soil. This could cause a build-up of pressure that eventually wears down the wall.
    • Another possibility is that the windows aren’t properly sealed. There could also be extra condensation, particularly for those who live in humid environments. This liquid can run down the windows and onto the walls.

Reliable Remediation When It Matters Most

Even the most well-built properties can experience flooding or excess moisture. The important thing is to point out those areas that are most prone and do something about it. A detection unit is the most cost-effective and simplest way to combat the issue.

Plus, taking those preventative measures now often translates to monetary savings, and peace of mind, in the end.


Emily Brooks

Editorial Staff

As a journalist, Emily draws on her rich experience in home safety and seeks to research more on the topic. She is truly passionate about her interests. Emily is knowledgeable about security systems due to the in-depth studies that she has conducted for Securing Home.


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