Smart Water Shutoff Valves That Actually Stop Leaks
For most homes, the Moen Flo Smart Water Shutoff is the best overall pick, as it combines whole-home leak detection with an automatic shutoff valve and detailed water usage insights. Its main advantage is that it monitors flow patterns to catch leaks you might not notice, but its main limitation is that professional installation is often required, and the upfront cost is higher than simpler options.
A burst pipe or hidden leak can cause thousands in damage while you’re away. Smart water shutoff valves detect abnormal flow and automatically cut the water supply to your home or appliance, giving you peace of mind and remote control via smartphone.
We compared the most popular models on the market, analyzing specifications, installation requirements, and owner reviews. Whether you need whole-home protection or a simple valve for a washing machine, this guide helps you choose the right one.
Our top picks
Moen Flo Smart Water Shutoff
The Moen Flo integrates a motorized ball valve with ultrasonic flow sensors to monitor water usage and detect leaks down to 0.5 gallons per minute. It learns your household’s water patterns and shuts off automatically if it senses anomalies. Owners report that the accompanying app provides clear alerts and usage data, though installation typically requires a plumber.
Pros
- Accurate leak detection with minimal false alarms
- Comprehensive app with usage insights
- Can integrate with smart home systems
Cons
- Professional installation recommended
- Higher price point than basic valves
Phyn Plus Smart Water Assistant and Shut-Off
Phyn Plus uses proprietary software to analyze water pressure and flow, detecting leaks and even identifying which fixture is running. It offers a sleek design and easy-to-read app. Installation is similar to Moen, often requiring a plumber, but the device provides real-time water use data and can shut off water remotely or automatically.
Pros
- Identifies fixture-level usage
- No flow sensor, so no internal parts to clog
- Works with Amazon Alexa and Google Assistant
Cons
- Requires professional installation
- Some users report sensitivity to pressure fluctuations
Flume Water Monitor and Shutoff
Flume attaches to your water meter without cutting pipes, making it ideal for renters or those who can’t modify plumbing. The shutoff version uses a separate controller that can close a ball valve on your main line. Owners like the easy DIY installation and the detailed water usage reports. The shutoff function requires a professional to install the valve, but the monitor itself is non-invasive.
Pros
- Easy to install for monitoring
- Works with most water meters
- No plumber needed for the sensor
Cons
- Shutoff valve sold separately
- Not as fast as inline systems for shutoff
Kohler H2Wise + Leak Detection Kit
Kohler H2Wise is a smart water shutoff that can be retrofitted to any existing ball valve. It includes a motorized actuator that attaches to your current valve, plus leak sensors that monitor for moisture. The system learns your water usage and sends alerts if it detects anomalies. It’s a good option for homes where replacing the main valve is costly.
Pros
- No pipe cutting required
- Leak sensors included
- Easy to install with basic tools
Cons
- May not fit all valve types
- Does not measure flow, only on/off
LeakSmart by Moen Smart Water Shutoff
LeakSmart, now part of Moen, offers a motorized ball valve with a hub that connects to Wi-Fi and Z-Wave. It works with leak sensors to automatically shut off water when a leak is detected. It integrates with smart home platforms like SmartThings and Wink. Owners appreciate the reliability and the ability to add multiple sensors.
Pros
- Strong smart home integration
- Can expand with multiple sensors
- Reliable valve mechanism
Cons
- Hub and sensors add to cost
- Professional installation recommended
Orbit B-hyve Smart Water Shutoff
Orbit B-hyve offers a smart shutoff valve that connects to your existing ball valve, similar to Kohler but at a lower price. It includes a flow meter that monitors water usage and detects continuous flow. The app provides alerts and allows remote shutoff. It’s a great entry into smart shutoffs without a huge investment.
Pros
- Affordable option
- Easy installation
- Flow monitoring included
Cons
- Some users report app connectivity issues
- No leak sensors included
Eve Water Guard
Eve Water Guard is a unique product that not only detects leaks but can also shut off water when paired with a compatible motorized valve. It uses Thread technology for fast, reliable HomeKit integration. It works with Eve’s own leak sensors and can trigger automations. Since it’s designed for Apple users, it requires a HomeKit hub.
Pros
- Seamless Apple HomeKit integration
- Thread support for fast response
- Easy to set up
Cons
- Requires additional valve and sensors
- Not for Android users
Before you buy
Compared at a glance
| # | Model | Flow monitoring | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Moen Flo Smart Water Shutoff | Ultrasonic sensors | Whole-home protection with advanced leak detection | 9.4 | Check price |
| 2 | Phyn Plus Smart Water Assistant and Shut-Off | Pressure wave analysis | Homes wanting pressure-based leak detection | 9.2 | Check price |
| 3 | Flume Water Monitor and Shutoff | Clamp-on sensor, no cutting | Non-invasive monitoring plus shutoff capability | 9.0 | Check price |
| 4 | Kohler H2Wise + Leak Detection Kit | DIY-friendly retrofit on existing ball valve | Retrofitting existing homes with a smart valve | 8.8 | Check price |
| 5 | LeakSmart by Moen Smart Water Shutoff | Z-Wave and Wi-Fi via hub | Homes with existing LeakSmart ecosystem | 8.6 | Check price |
| 6 | Orbit B-hyve Smart Water Shutoff | Attaches to existing ball valve | Budget-conscious DIYers | 8.4 | Check price |
| 7 | Eve Water Guard | Thread (requires HomePod or Apple TV) | Apple HomeKit users | 8.2 | Check price |
Common questions
How does a smart water shutoff valve detect leaks?
There are two methods: flow sensors that monitor water flow patterns and can detect when water is running when it shouldn’t be, and moisture sensors that trigger shutoff when they get wet. Some systems use a combination of both.
Can I install a smart water shutoff valve myself?
Some retrofit models that attach to an existing ball valve can be installed by a confident DIYer. Whole-home systems that require cutting into pipes are best left to professionals. Always check local plumbing codes.
Will a smart shutoff valve work during a power outage?
Most have battery backup, but if the valve is closed and power is lost, you may not be able to reopen it until power is restored. Some models have a manual override.
Do I need a smart water shutoff valve if I have a smart leak detector?
A smart leak detector only alerts you to leaks; it does not stop the flow of water. A shutoff valve provides proactive protection by automatically cutting water supply, which can prevent significant damage if you are away.
What size valve do I need for my home?
Most residential main water lines are 1 inch or 1.25 inches. Check your pipe diameter before purchasing. Some valves come in both sizes, or you can buy an adapter.
Can I use a smart shutoff valve for a specific appliance like a washing machine?
Yes, you can install a smaller point-of-use valve on the supply line to a washing machine, dishwasher, or water heater. Some products, like the Moen Flo, offer models for this purpose.
Do these valves require a subscription?
Most do not require a subscription for basic features. Some, like Moen Flo, offer optional services for advanced leak detection. Check the product details before purchase.
How much water damage can a smart shutoff valve prevent?
A shutoff valve can stop water within seconds of detecting a leak, significantly reducing damage. For example, a burst pipe can release up to 100 gallons per minute, so quick action is crucial.
Our pick
For most homeowners, the Moen Flo Smart Water Shutoff is the best investment because it offers reliable whole-home protection with advanced leak detection. If you have a tighter budget, the Orbit B-hyve provides a solid DIY solution. For Apple users, the Eve Water Guard is a great choice. Whichever you pick, ensure it matches your plumbing and smart home setup.
Dana Whitfield
Dana spent eight years buying and merchandising for a regional kitchenware retailer before moving into editorial work. She has handled thousands of SKUs across cookware, small appliances and kitchen organization, and focuses on the practical differences that matter once a product is actually in daily use.
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