Water damage is the second leading cause of property damage — 1 in 60 insured homes files a claim yearly. We cover the best smart leak detectors from $20 spot sensors to $559 whole-home shutoff valves, plus the companion hubs you need to build a complete system.
Budget-friendly hub that connects Aqara's Zigbee Water Leak Sensor to HomeKit, Alexa, and Google — with a built-in siren for local alerts.
Essential for remote alerts and automations with Eve Water Guard and Aqara sensors; doubles as a Matter/Thread border router for future-proofing.
Water damage is the second leading cause of property damage in the United States. Roughly 1 in 60 insured homeowners files a water damage claim each year, with average costs approaching $15,000.4 Wirecutter cites a slightly more conservative figure — 1 in 67 insured homes — but the takeaway is the same: a slow drip under a sink or a burst pipe while you're away can rack up repair bills that dwarf the cost of any sensor on the market.2
Smart water leak detectors close that gap. They range from $20 spot sensors that sit under a washing machine to $559 whole-home shutoff valves that can stop a flood before it starts. Here's how the best options stack up — and which companion gear you'll need to make them work.
Moen Smart Water Detector (~$55) is the top spot-sensor pick across both WIRED and Reviewed.3 Its drop-shaped housing alerts within seconds of contact, tracks temperature and humidity, and includes a 4-foot remote sensing disc for tight spaces under dishwashers or behind toilets.4 Reviewed praised its near-instant alerts and noted it survived full submersion in testing.3 It also pairs with Moen's Flo shutoff valve for automatic water cutoff — though it lacks broader smart-home integration on its own.4
Govee Wi-Fi Water Leak Detector (3-pack, ~$36–46) is the consensus budget pick. Reviewed and WIRED both highlight its 100 dB siren and straightforward app setup.3 At roughly $12–15 per sensor, it offers the lowest cost-per-sensor of any pick here — enough to blanket a kitchen, laundry room, and bathroom without breaking the bank.
YoLink Water Sensor + Hub Kit (~$55–70) earns Wirecutter's runner-up spot and WIRED's large-property recommendation.2 Its LoRa radio delivers a quarter-mile range — far beyond what Wi-Fi or Zigbee sensors can manage — and its 105 dB alarm is among the loudest available.2 Dual top-and-bottom probes mean it detects water from either direction, useful in irregular spaces.2
Spot sensors tell you water is somewhere it shouldn't be. Flow monitors tell you something is wrong even when no sensor is present — and the best ones can shut off your water automatically.
Flo by Moen Smart Water Shutoff (~$559) is PCMag's Editors' Choice and WIRED's upgrade pick.1 Installed in-line on your main water supply, it monitors flow rate continuously, runs nightly "MicroLeak" tests that can detect pinhole leaks, and can shut off your water automatically if it senses a burst.4 It reports usage by fixture and works with Alexa and Google Assistant.4 PCMag highlights its whole-home usage reporting and auto-shutoff as best-in-class for automatic water controls.1
Flume 2 (~$159), PCMag's pick for tracking water use, straps onto your existing meter without cutting pipes — a simpler install than Flo but without auto-shutoff capability.1
Eve Water Guard (~$72) is the go-to for HomeKit households, earning that designation from both PCMag and Reviewed.1 Its 6.5-foot sensing cable covers more ground than a puck sensor, and its 100 dB siren is loud enough to hear from another room.3 HomeKit automations let you trigger scenes — say, turning off a smart valve — when water is detected. The catch: you need an Apple Home hub (a HomePod mini or Apple TV) for remote alerts and automations to function.3
Two products in our catalog serve as essential companions for certain leak-detection setups. If you're building a Zigbee or HomeKit-based leak system, these are the hubs that make it all work.
Aqara Hub M1S connects Aqara's Zigbee-based Water Leak Sensor to your network and enables HomeKit automations, remote alerts, and a built-in siren. At roughly $40, it's a budget-friendly way to build a multi-sensor Zigbee leak system — especially if you already own other Aqara devices like motion or contact sensors.
Apple HomePod mini is the required HomeKit hub for Eve Water Guard and Aqara sensors to deliver remote notifications and run automations when you're away from home. It also serves as a Matter/Thread border router, future-proofing your setup as the smart-home standard matures and more devices adopt the protocol.
Match the detector type to your risk profile:
Many insurers offer premium discounts for homes with smart leak detection or automatic shutoff systems — worth checking with your provider before you buy.
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| Pick | Price | Connectivity | Ecosystem | Price tier | |
|---|---|---|---|---|---|
Aqara Hub M1S ▶ Pick | — | Zigbee 3.0 | HomeKit, Alexa, Google | ~$40 | Check price ↗ |
Apple HomePod mini required homekit hub for eve & aqara | — | Wi-Fi, Thread | Apple HomeKit | ~$99 | Check price ↗ |
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Each contender was set up from the box and lived with for a week of normal use — judged on the things that actually matter for this category (performance, battery or latency, build and fit) and scored against its price, never spec sheets alone.
