Winner
Currently unavailable on Amazon USA
Updated October 2026
Data from the official Fibaro and Kidde sites.
2026 verdict
For an Apple Home household, the Fibaro Flood Sensor (HomeKit) is the more complete leak detector of the two.
It pairs over Bluetooth with an Apple TV, HomePod or iPad as the HomeKit hub, and it adds a tilt sensor, tamper alerts and an on-device alert light on top of water, temperature and freeze sensing. The Kidde WiFi Water Leak & Freeze Detector wins back on price and needs no hub at all, joining Wi-Fi directly with Google Home and Home Assistant instead of HomeKit. Pick the Fibaro if you run Apple Home and want the extra sensing, and the Kidde for a low-cost, hub-free Wi-Fi sensor.
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| Feature | Fibaro Flood Sensor (HomeKit) | Kidde WiFi Water Leak & Freeze Detector | Winner |
|---|---|---|---|
| Rating | 4.1 | 3.9 | Fibaro Flood Sensor (HomeKit) |
| Sensors | Water Leak, Temperature, Tilt | Water Leak, Temperature | Fibaro Flood Sensor (HomeKit) |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts | Fibaro Flood Sensor (HomeKit) |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | Bluetooth | 2.4 GHz WiFi | Tie |
| Integrations | Apple HomeKit, Home Assistant | Google Home, Home Assistant | Tie |
| On Device Alert Sound | YES | YES | Tie |
What the differences mean
Hub and platform
The Fibaro Flood Sensor (HomeKit) pairs over Bluetooth and needs an Apple TV, HomePod or iPad acting as a HomeKit hub. The Kidde WiFi Water Leak & Freeze Detector joins Wi-Fi with no hub, but works with Google Home and Home Assistant instead of HomeKit.
Sensors
The Fibaro adds a tilt sensor, so it also notices when the unit is moved or knocked over. The Kidde has no tilt sensing.
On-device alert
Both sound a local alarm, but the Fibaro pairs that sound with a light on the unit. The Kidde's alert light is not documented, so a local warning leans on sound alone.
Tamper alerts
The Fibaro raises tamper alerts if someone interferes with the sensor. The Kidde does not offer tamper detection.
Power
The Fibaro runs about two years on a CR123A cell and can be wired to a 12/24V DC source so the battery becomes backup. The Kidde uses two AA cells with no documented runtime.
Price
The Kidde is the more affordable of the pair, which matters if you want to place several sensors around a house. The Fibaro carries a premium for its HomeKit support and extra sensing.
Which one to buy if
- you run Apple Home
The Fibaro Flood Sensor (HomeKit) pairs natively through an Apple TV, HomePod or iPad as the HomeKit hub.
- you want tilt and tamper sensing as well as a leak alarm
The Fibaro adds a tilt sensor and tamper alerts on top of water, temperature and freeze detection.
- you have no Apple hub and just want Wi-Fi alerts
The Kidde joins 2.4 GHz Wi-Fi on its own and works with Google Home and Home Assistant.
- you are covering many spots on a budget
The Kidde costs less and needs no hub, so several units stay affordable.
- you want wired power with the battery as backup
The Fibaro can run from a 12/24V DC supply, leaving the CR123A cell as emergency power.
Winner
Currently unavailable on Amazon USA
- + Rating: 4.1
- + Sensors: Water Leak, Temperature, Tilt
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
37% OFF
$22.82
$35.97
- - Rating: 3.9 vs 4.1
- - Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt
What owners say
Owners of both sensors describe quick alerts that caught a real leak before it spread, and the two groups agree the device is easy to place in a tight spot. Fibaro Flood Sensor (HomeKit) owners single out the combined water, temperature and tilt sensing, an on-device sound and light that fire at once, and a CR123A cell still reading near full after a year or more; their warnings are Bluetooth range against a single Apple hub, an alarm with no way to silence it remotely and the lack of Google Home, Alexa or SmartThings support. Kidde WiFi Water Leak & Freeze Detector owners value the hub-free install and shareable alerts, and complain mainly about Wi-Fi pairing, a difficult battery compartment and a slow temperature refresh.
Frequently Asked Questions
Which is better overall: Fibaro Flood Sensor (HomeKit) or Kidde WiFi Water Leak & Freeze Detector?
The Fibaro Flood Sensor (HomeKit) for an Apple Home household that wants the extra sensing. It adds tilt and tamper detection, an alert light and a HomeKit-native path. The Kidde WiFi Water Leak & Freeze Detector is the better pick on price and for a home with no hub that prefers Google Home or Home Assistant.
What is the biggest difference between the Fibaro Flood Sensor (HomeKit) and the Kidde WiFi Water Leak & Freeze Detector?
The platform. The Fibaro Flood Sensor (HomeKit) connects over Bluetooth to an Apple Home hub and adds tilt and tamper sensing, while the Kidde WiFi Water Leak & Freeze Detector joins Wi-Fi with no hub and reaches Google Home and Home Assistant instead of HomeKit.
Does the Fibaro Flood Sensor (HomeKit) need a separate hub?
It needs an Apple Home hub, meaning an Apple TV, HomePod or iPad set up as a home hub, since it connects over Bluetooth. It does not need a dedicated Zigbee or Z-Wave bridge.
Does the Kidde WiFi Water Leak & Freeze Detector work with Apple HomeKit?
No. It works with Google Home and Home Assistant, with no Apple HomeKit, SmartThings or Matter support, and Alexa has no leak sensor device type for it.
Do both sensors detect freezing pipes?
Yes. Both raise freeze alerts, and both also read temperature. The Fibaro Flood Sensor (HomeKit) adds a tilt sensor, and the Kidde adds low-battery alerts.
Who should buy the Fibaro Flood Sensor (HomeKit)?
Apple Home users who want a small sensor with water, temperature, freeze, tilt and tamper detection, and the option of wired backup power.
Who should buy the Kidde WiFi Water Leak & Freeze Detector?
Anyone without a hub who wants a low-cost Wi-Fi sensor that covers leaks, temperature and freezing pipes and links to Google Home.
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