Aqara Water Leak Sensor vs Kidde WiFi Water Leak & Freeze Detector

Updated September 2026

Data from Amazon and official Aqara and Kidde sites.

2026 verdict

Hub-free freeze alerts give the Kidde WiFi Water Leak & Freeze Detector the edge over the Aqara Water Leak Sensor.

Winner

Kidde WiFi Water Leak & Freeze Detector

$18.43

Buy on Amazon USA

Kidde wins on price, integrations, sensing, alerts, and an on-device siren, joining 2.4 GHz Wi-Fi on its own and talking to Alexa, Google Home and Home Assistant while watching both leaks and freezing pipes. The Aqara Water Leak Sensor still earns its keep as a tiny IP67 Zigbee puck that owners rate more highly, but it needs a hub, has no native Alexa or Google Home path, and stays silent on the device. Choose the Kidde WiFi Water Leak & Freeze Detector for standalone freeze-and-leak coverage; pick the Aqara Water Leak Sensor when you already run Aqara or HomeKit Zigbee and want a sealed, discreet puck under a sink.

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Feature	Aqara Water Leak Sensor	Kidde WiFi Water Leak & Freeze Detector	Winner
Price	$18.99	$18.43	Kidde WiFi Water Leak & Freeze Detector
Rating	4.2	4.0	Aqara Water Leak Sensor
Weather Resistance	IP67	NO	Aqara Water Leak Sensor
Integrations	Apple HomeKit, Home Assistant	Google Home, Alexa, Home Assistant	Kidde WiFi Water Leak & Freeze Detector
Sensors	Water Leak	Water Leak, Temperature	Kidde WiFi Water Leak & Freeze Detector
Alerts	Water Leak Alerts, Low Battery Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts	Kidde WiFi Water Leak & Freeze Detector
On Device Alert Sound	NO	YES	Kidde WiFi Water Leak & Freeze Detector
Warranty	1 year	1 year	Tie
Connectivity	Zigbee	2.4 GHz WiFi	Tie
On Device Alert Light	NO	NO	Tie

Aqara

Aqara Water Leak Sensor

$18.99

Buy on Amazon USA

+ Rating: 4.2
+ Weather Resistance: IP67
- Price: $18.99 vs $18.43
- Integrations: Apple HomeKit, Home Assistant vs Google Home, Alexa, Home Assistant

Winner

Kidde

Kidde WiFi Water Leak & Freeze Detector

$18.43

Buy on Amazon USA

+ Price: $18.43
+ Integrations: Google Home, Alexa, Home Assistant
+ Sensors: Water Leak, Temperature
- Rating: 4.0 vs 4.2
- Weather Resistance: NO vs IP67

Frequently Asked Questions

Which is better overall: the Aqara Water Leak Sensor or the Kidde WiFi Water Leak & Freeze Detector?

The Kidde WiFi Water Leak & Freeze Detector wins overall, with a lower price, more integrations, leak-plus-freeze sensing, richer alerts, and an on-device siren. The Aqara Water Leak Sensor is the better-reviewed, weather-sealed alternative inside an Aqara or Zigbee hub setup.

What is the biggest difference between the Aqara Water Leak Sensor and the Kidde WiFi Water Leak & Freeze Detector?

Standalone Wi-Fi versus hub Zigbee. The Kidde WiFi Water Leak & Freeze Detector connects to 2.4 GHz Wi-Fi with no extra hardware. The Aqara Water Leak Sensor is a compact IP67 Zigbee puck that needs a Zigbee hub, and Apple HomeKit needs an Aqara Hub.

Does the Aqara Water Leak Sensor detect freezing temperatures?

No. The Aqara Water Leak Sensor is water-leak only. The Kidde WiFi Water Leak & Freeze Detector adds a temperature sensor plus freeze alerts at 37 °F or on a rapid temperature drop.

Which sensor has a local alarm?

The Kidde WiFi Water Leak & Freeze Detector sounds an on-device alert. The Aqara Water Leak Sensor has no on-device sound or light, so the alarm comes from the hub or the app.

Who should buy the Aqara Water Leak Sensor?

Aqara, Apple HomeKit or Home Assistant Zigbee households that want a tiny IP67 puck, a 2-year CR2032 battery, and do not need freeze detection or a local siren.

Who should buy the Kidde WiFi Water Leak & Freeze Detector?

Buyers who want hub-free Wi-Fi, freeze warnings, Alexa or Google Home, and a puck that can sound an alarm in the room without a Zigbee hub.

Full comparison table

Compare all 32 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.