Updated October 2026
Data from Amazon and official Moen and Honeywell Home sites.
2026 verdict
The Resideo L1 WiFi Water Leak and Freeze Detector is the stronger system pick, with a sensing cable that covers a line and can stretch to 500 feet, a 100 dBA alarm and a two-year warranty.
The Moen Smart Leak Detector costs less and is IP67 rated for damp spots, but its probe reaches only 48 inches and it keeps you inside a smaller app. Choose the Resideo when you want to protect a long run of pipe or a whole utility room, and the Moen for an inexpensive sensor with a short remote disc.
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| Feature | Moen Smart Leak Detector | Resideo L1 WiFi Water Leak and Freeze Detector | Winner |
|---|---|---|---|
| Price | $54.72 | $68.00 | Moen Smart Leak Detector |
| Rating | 3.3 | 3.8 | Resideo L1 WiFi Water Leak and Freeze Detector |
| Warranty | 1 year | 2 years | Resideo L1 WiFi Water Leak and Freeze Detector |
| Weather Resistance | IP67 | IP44 | Moen Smart Leak Detector |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, Bluetooth | Resideo L1 WiFi Water Leak and Freeze Detector |
| Battery Life | 2 years | 2 years | Tie |
| Integrations | Home Assistant | None | Tie |
| Sensors | Water Leak, Temperature | Water Leak, Temperature | Tie |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Tie |
| On Device Alert Sound | YES | YES | Tie |
| On Device Alert Light | YES | YES | Tie |
What the differences mean
Coverage
The Resideo L1 WiFi Water Leak and Freeze Detector senses along its whole cable and can extend toward 500 feet. The Moen Smart Leak Detector uses a 48-inch remote disc that covers a single point.
Local alarm
The Resideo L1 WiFi Water Leak and Freeze Detector has a 100 dBA buzzer and a blinking red LED. The Moen Smart Leak Detector is much quieter at 51 dB.
Weather rating
The Moen Smart Leak Detector is IP67 rated. The Resideo L1 WiFi Water Leak and Freeze Detector is IP44, which handles splashes but must not be submerged.
Ecosystem
The Resideo L1 WiFi Water Leak and Freeze Detector works only through the First Alert and Resideo apps, with no voice assistant or Matter. The Moen Smart Leak Detector adds partial Home Assistant support and Alexa announcements through its skill.
Warranty
The Resideo L1 WiFi Water Leak and Freeze Detector carries a two-year warranty against one year for the Moen Smart Leak Detector.
Water shutoff
The Resideo L1 WiFi Water Leak and Freeze Detector can pair with up to 30 detectors and an L5 valve to close the water main. The Moen Smart Leak Detector has no such valve integration.
Which one to buy if
- you want to cover a long run of pipe
The Resideo L1 WiFi Water Leak and Freeze Detector's cable senses a line and extends toward 500 feet.
- you want automatic water shutoff
The Resideo L1 WiFi Water Leak and Freeze Detector pairs with an L5 valve to close the supply.
- the sensor may sit in a wet spot
The Moen Smart Leak Detector is IP67 rated; the Resideo L1 is IP44.
- you want voice assistant control
The Moen Smart Leak Detector announces through Alexa and supports Home Assistant, which the Resideo does not.
- you want the lower up-front cost
The Moen Smart Leak Detector is the more affordable of the two.
$54.72
- + Price: $54.72
- + Weather Resistance: IP67
- - Rating: 3.3 vs 3.8
- - Warranty: 1 year vs 2 years
Winner
$68.00
- + Rating: 3.8
- + Warranty: 2 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- - Price: $68.00 vs $54.72
- - Weather Resistance: IP44 vs IP67
What owners say
Owners of the Moen Smart Leak Detector report that once it is connected it does its core job, catching water near sump pumps, water softeners and washing machine hoses before damage sets in. They value the remote sensing disc for hard-to-reach spots and the built-in temperature and humidity readout, which lets a basement watch for frost as well as leaks. The most common complaint is setup: missing or unclear pairing instructions, an app that loops or refuses to connect, and units that arrived with the protective battery tab still partially in place so the cell was already drained. Several mention the 51 dB alarm is quiet enough that they depend on phone notifications instead.
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.
- Moen Smart Leak Detector
- Resideo L1 WiFi Water Leak and Freeze Detector
Loading price history...
Frequently Asked Questions
Which is better overall: Moen Smart Leak Detector or Resideo L1 WiFi Water Leak and Freeze Detector?
For covering a whole utility room or a long run of pipe, the Resideo L1 WiFi Water Leak and Freeze Detector, with its cable sensing and L5 valve option. For an inexpensive, IP67 sensor with a short remote disc and voice announcements, the Moen Smart Leak Detector is the better fit.
Does the Resideo L1 WiFi Water Leak and Freeze Detector need a hub?
No. The Resideo L1 WiFi Water Leak and Freeze Detector joins 2.4 GHz Wi-Fi on its own, and the Moen Smart Leak Detector is also hub-free, so neither needs a gateway.
How much area does the Resideo L1 WiFi Water Leak and Freeze Detector cover?
The Resideo L1 WiFi Water Leak and Freeze Detector senses along its full 5 ft cable and can extend toward 500 feet with accessory cables. The Moen Smart Leak Detector's remote disc reaches 48 inches.
Can the Resideo L1 WiFi Water Leak and Freeze Detector shut the water off by itself?
Not alone. Up to 30 Resideo L1 WiFi Water Leak and Freeze Detector units can pair with an L5 shutoff valve, and then a leak found by any of them closes the water main.
Who should buy the Resideo L1 WiFi Water Leak and Freeze Detector?
Owners of a basement or utility room who want line coverage, humidity and freeze monitoring, a 100 dBA alarm and the option of automatic water shutoff.
Who should buy the Moen Smart Leak Detector?
Buyers who want a cheaper IP67 sensor that works over Wi-Fi with no hub, announces through Alexa and includes a 48-inch remote disc.
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
- 33 filters
YoLinkWater Leak Sensor 4
29% OFF$23.99$17.09
YoLinkWater Leak Sensor 1
15% OFF$19.99$16.99
TP-LinkTapo T300
$19.99
ShellyFlood S Gen4
$27.99
X-SenseWi-Fi Water Leak Detector
25% OFF
$15.99$11.99
AeotecWater Leak Sensor
$39.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
32% OFF$109.95$74.95
GoveeWater Leak Detector 2
14% OFF$69.99$59.99
SwitchBotWater Leak Detector
$16.99
AqaraWater Leak Sensor T1
€20.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
$19.99
FibaroFlood Sensor (Z-Wave)
Last priceOct 7, 2026$61.32
Unavailable
SonoffZigbee Water Leak Sensor
$24.99
AqaraWater Leak Sensor
$18.99
GoveeWater Sensor Alarm
$15.99
ShellyFlood Gen4
$39.99
EufyFlood & Freeze Sensor E20
$39.99
HeimanSmart Water Leakage Sensor
15% OFF$19.99$16.99
FibaroFlood Sensor (HomeKit)
Last priceJan 1, 2026$43.28
Unavailable
ThermostatsHoneywell HomeRTH9585WF Wi-Fi Smart Color Thermostat
4.3(20,106)31% OFF$179.99$123.49
ThermostatsHoneywell HomeT5 Smart Thermostat
4.3(1,518)30% OFF$109.99$77.25
ThermostatsHoneywell HomeT9 Smart Thermostat
4.3(2,980)Last priceOct 6, 2026$209.00
Unavailable
ThermostatsHoneywell HomeX2S Smart Thermostat
4.2(415)27% OFF$84.99$61.91
ThermostatsHoneywell HomeX7S Smart Thermostat
4.3(82)$194.95
ThermostatsHoneywell HomeX8S Smart Thermostat
4.1(153)6% OFF$259.99$245.00
Water Leak SensorsHoneywell HomeL1 WiFi Water Leak and Freeze Detector
3.8(68)$68.00