Water Leak Sensors · Head to head

Eve Water Guard vs Shelly Flood

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Eve and Shelly sites.
2026 verdict
Outside an Apple household, the Shelly Flood is the more versatile leak sensor of this pair, beating the Eve Water Guard on platforms and on freeze warnings.
Shelly Flood
Winner
Shelly Flood

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
It works with Google Home, SmartThings and Home Assistant, measures temperature for freeze alerts, runs on a battery so it goes anywhere, and carries a 2-year warranty against 1. The Eve Water Guard is the specialist: a sensing cable that watches a whole row of appliances, its own siren and light, Thread alongside Bluetooth, wall power and native Apple Home support, which the Shelly lacks. Both work with Home Assistant and support automations. Choose the Shelly Flood for a Wi-Fi leak and freeze sensor on Google Home or SmartThings, and the Eve Water Guard for an Apple Home kitchen or laundry run near an outlet.
Eve Water Guard
Eve

Eve Water Guard

32% OFF
Prime exclusive deal
$74.95
$109.95
4% above its lowest price of the last 6 months ($72.19)
14% above its lowest price of the last 6 months (€74.23)

Ends in --

Join Prime to buy it at $74.95

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Last recorded price

Buy on Amazon USA
vs
Winner
Shelly Flood
Shelly

Shelly Flood

Prime exclusive deal
Lowest price of the last 6 months
10% above its lowest price of the last 6 months (€23.90)

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
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FeatureEve Water GuardShelly FloodWinner
Rating4.53.8Eve Water Guard
Warranty1 year2 yearsShelly Flood
ConnectivityBluetooth, Thread Protocol2.4 GHz WiFiEve Water Guard
IntegrationsApple HomeKit, Home AssistantGoogle Home, Samsung SmartThings, Home AssistantShelly Flood
SensorsWater LeakWater Leak, TemperatureShelly Flood
AlertsWater Leak AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsShelly Flood
On Device Alert SoundYESNOEve Water Guard
On Device Alert LightYESNOEve Water Guard

What the differences mean

Coverage area

The Eve Water Guard detects water anywhere along its sensing cable, so one unit can guard the length of a kitchen or laundry. The Shelly Flood detects water only under the unit itself.

Alarm on the sensor

The Eve Water Guard has a siren and a light. The Shelly Flood has neither, so it relies on phone alerts or automations to warn anyone at home.

Freeze alerts

The Shelly Flood measures temperature and sends temperature and freeze alerts. The Eve Water Guard detects water only.

Power

The Eve Water Guard needs wall power, which limits where it can go but ends battery changes. The Shelly Flood runs about 1.5 years on a CR123A cell, not included.

Smart home platforms

The Eve Water Guard works with Apple Home and Home Assistant over Thread or Bluetooth. The Shelly Flood works with Google Home, SmartThings and Home Assistant over Wi-Fi, but not Apple Home or Alexa.

Which one to buy if

Eve

Eve Water Guard

32% OFF
Prime exclusive deal
$74.95
$109.95

Last recorded price

Buy on Amazon USA
  • + Rating: 4.5
  • + Connectivity: Bluetooth, Thread Protocol
  • + On Device Alert Sound: YES
  • - Warranty: 1 year vs 2 years
  • - Integrations: Apple HomeKit, Home Assistant vs Google Home, Samsung SmartThings, Home Assistant
Winner
Shelly

Shelly Flood

Prime exclusive deal

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Warranty: 2 years
  • + Integrations: Google Home, Samsung SmartThings, Home Assistant
  • + Sensors: Water Leak, Temperature
  • - Rating: 3.8 vs 4.5
  • - Connectivity: 2.4 GHz WiFi vs Bluetooth, Thread Protocol

What owners say

Owners of both are mostly smart home enthusiasts, and both groups describe sensors that report reliably once set up. Eve Water Guard owners single out the sensing cable covering a whole appliance run, scan-and-add HomeKit setup with no account, and real leaks caught by its siren, light and Home app alert. Shelly Flood owners single out configuration from a phone browser with no app, Home Assistant picking it up automatically and a temperature reading on top of flood detection. The complaints differ: Eve owners mention the cost, needing an outlet nearby and a few units that stopped detecting, while Shelly owners mention Wi-Fi pairing that takes several attempts and sensors dropping off the network.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Eve Water Guard
  • Shelly Flood

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Frequently Asked Questions

Which is better overall: Eve Water Guard or Shelly Flood?

The Shelly Flood for most homes, thanks to Google Home, SmartThings and Home Assistant support, freeze alerts and battery power. The Eve Water Guard is better for Apple Home users covering a long appliance run from one wall-powered unit.

What is the biggest difference between the Eve Water Guard and the Shelly Flood?

The Eve Water Guard is a wall-powered Apple Home sensor with a long sensing cable and its own siren, while the Shelly Flood is a battery Wi-Fi puck with temperature and freeze alerts but no alarm on the device.

Does the Shelly Flood work with Apple Home?

No. The Shelly Flood has no Apple Home or Matter support; it works with Google Home, SmartThings and Home Assistant. The Eve Water Guard works with Apple Home and Home Assistant.

Which one needs batteries?

The Shelly Flood, which runs on one CR123A cell rated for about 1.5 years. The Eve Water Guard is powered from the wall and uses no battery.

Who should buy the Eve Water Guard?

Apple Home and Thread households that want one sensor with a cable covering a kitchen or laundry run, a local siren and light, and no batteries to replace.

Who should buy the Shelly Flood?

Google Home, SmartThings and Home Assistant users who want an inexpensive Wi-Fi leak and temperature sensor that works without a hub.

Full comparison table

Compare all 34 Water Leak Sensors side by side

You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 34 Water Leak Sensors
  • 36 specs compared
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