Winner
39% OFF
$21.98
$35.97
Updated October 2026
Data from the official Kidde and Moen sites.
2026 verdict
The Kidde WiFi Water Leak & Freeze Detector is the better all-rounder of these two, with the stronger reputation and the wider platform support.
It joins Wi-Fi with no hub, warns of leaks and freezing at 37 F, and works with Google Home and Home Assistant. The Moen Smart Leak Detector answers with a rarer feature set: it tracks temperature and humidity, includes a 48-inch remote sensing cable, and is IP67 rated, though its app-based setup frustrates many buyers. Choose the Kidde WiFi Water Leak & Freeze Detector for straightforward, well-reviewed leak and freeze protection, and the Moen Smart Leak Detector if you want the sensing cable and a tougher housing.
vs
$54.72
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| Feature | Kidde WiFi Water Leak & Freeze Detector | Moen Smart Leak Detector | Winner |
|---|---|---|---|
| Price | $21.98 | $54.72 | Kidde WiFi Water Leak & Freeze Detector |
| Rating | 3.9 | 3.3 | Kidde WiFi Water Leak & Freeze Detector |
| Weather Resistance | NO | IP67 | Moen Smart Leak Detector |
| Integrations | Google Home, Home Assistant | Home Assistant | Kidde WiFi Water Leak & Freeze Detector |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Sensors | Water Leak, Temperature | Water Leak, Temperature | Tie |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Tie |
| On Device Alert Sound | YES | YES | Tie |
What the differences mean
Sensing cable
The Moen Smart Leak Detector includes a Remote Sensing Disc on a cable that reaches up to 48 inches, so its sensing point can sit in a sump pit. The Kidde WiFi Water Leak & Freeze Detector senses only at its own body.
Housing
The Moen Smart Leak Detector is IP67 rated for wet and damp spots. The Kidde WiFi Water Leak & Freeze Detector has no weather-resistance rating, so it is best kept dry.
Integration
The Kidde WiFi Water Leak & Freeze Detector works with Google Home and Home Assistant. The Moen Smart Leak Detector supports neither, with only partial Home Assistant support and Alexa limited to announcements through a skill.
Temperature and humidity
Both sense temperature and raise freeze alerts, but the Moen Smart Leak Detector also reports humidity and trends it in the app, while the Kidde WiFi Water Leak & Freeze Detector refreshes its room temperature only every twelve hours.
Setup
Buyers describe the Kidde WiFi Water Leak & Freeze Detector as cheap and simple once paired, but pairing is its weak point. The Moen Smart Leak Detector is widely reported as the harder of the two to get onto the app.
Which one to buy if
- the sensing point must reach a sump pit or behind an appliance
The Moen Smart Leak Detector ships with a 48-inch remote sensing cable the Kidde WiFi Water Leak & Freeze Detector lacks.
- you want the simplest, best-value leak and freeze alarm
The Kidde WiFi Water Leak & Freeze Detector is cheaper, better reviewed and joins Wi-Fi with no hub.
- your home runs on Google Home or Home Assistant
The Kidde WiFi Water Leak & Freeze Detector supports both, while the Moen Smart Leak Detector does not.
- the sensor will sit somewhere wet
The Moen Smart Leak Detector is IP67 rated, and the Kidde WiFi Water Leak & Freeze Detector has no weather-resistance rating.
- you want humidity monitoring as well as temperature
The Moen Smart Leak Detector reports humidity on top of temperature, which the Kidde WiFi Water Leak & Freeze Detector does not.
Winner
39% OFF
$21.98
$35.97
- + Price: $21.98
- + Rating: 3.9
- + Integrations: Google Home, Home Assistant
- - Weather Resistance: NO vs IP67
$54.72
- + Weather Resistance: IP67
- - Price: $54.72 vs $21.98
- - Rating: 3.3 vs 3.9
What owners say
Both devices have loyal owners who describe catching a leak in time, but the two groups report different experiences. Kidde WiFi Water Leak & Freeze Detector owners like the freeze alert at 37 F, the slim shape and the price, and some have left one under a sink for a year and still gotten an alert; against that, many describe a stubborn Wi-Fi pairing, a battery compartment that is very hard to open, and a temperature reading that only updates twice a day. Moen Smart Leak Detector owners value the temperature and humidity display and the remote sensing cable for sump pits, yet a large share hit a fiddly app pairing process and units that arrived with a partly drained battery.
Frequently Asked Questions
Which is better overall: Kidde WiFi Water Leak & Freeze Detector or Moen Smart Leak Detector?
The Kidde WiFi Water Leak & Freeze Detector for most buyers: it is cheaper, better reviewed, hub-free and works with Google Home and Home Assistant. The Moen Smart Leak Detector is the pick when you need the 48-inch sensing cable, humidity reporting or an IP67 body.
Do the Kidde WiFi Water Leak & Freeze Detector and the Moen Smart Leak Detector need a hub?
No. Both join 2.4 GHz Wi-Fi directly.
Does the Moen Smart Leak Detector have a sensing cable?
Yes, a Remote Sensing Disc on a cable that reaches up to 48 inches. The Kidde WiFi Water Leak & Freeze Detector has no cable and detects water only at its own body.
Which one works with Google Home or Home Assistant?
The Kidde WiFi Water Leak & Freeze Detector works with Google Home and Home Assistant. The Moen Smart Leak Detector supports neither, and its Home Assistant support is only partial.
Do both warn about freezing pipes?
Yes. The Kidde WiFi Water Leak & Freeze Detector alerts at 37 F or on a rapid drop, and the Moen Smart Leak Detector sends freeze alerts from its temperature and humidity sensing.
Who should buy the Kidde WiFi Water Leak & Freeze Detector?
Buyers who want an inexpensive, well-reviewed sensor that covers leaks and freezing, works with Google Home or Home Assistant, and needs no hub.
Who should buy the Moen Smart Leak Detector?
Anyone who wants leak, temperature and humidity monitoring plus a 48-inch remote sensing cable for a sump pit or a tight space, and is ready for a more involved setup.
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