32% OFF
Prime exclusive deal$74.95
$109.95
4% above its lowest price of the last 6 months ($72.19)
Ends in --
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Updated October 2026
Data from Amazon and official Eve and Honeywell Home sites.
2026 verdict
The Resideo L1 WiFi Water Leak and Freeze Detector wins this pairing on what it watches and how it connects.
It joins 2.4 GHz Wi-Fi with no hub, tracks temperature and humidity as well as water, and its 5 ft sensing cable extends into a long run. The Eve Water Guard still answers with the better owner reputation, native Apple HomeKit and Thread, and a 100 dB siren on the unit, and it is the one to pick inside an Apple or Thread home. Neither needs a bridge to report, but the Resideo L1 WiFi Water Leak and Freeze Detector lives only in its own app while the Eve Water Guard automates directly in the Home app. Buy the Resideo for freeze, humidity and long-run coverage in a hub-free house, and the Eve Water Guard for a HomeKit-first one.
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| Feature | Eve Water Guard | Resideo L1 WiFi Water Leak and Freeze Detector | Winner |
|---|---|---|---|
| Price | $74.95 | $68.00 | Resideo L1 WiFi Water Leak and Freeze Detector |
| Rating | 4.5 | 3.8 | Eve Water Guard |
| Warranty | 1 year | 2 years | Resideo L1 WiFi Water Leak and Freeze Detector |
| Integrations | Apple HomeKit, Home Assistant | None | Eve Water Guard |
| Sensors | Water Leak | Water Leak, Temperature | Resideo L1 WiFi Water Leak and Freeze Detector |
| Alerts | Water Leak Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Resideo L1 WiFi Water Leak and Freeze Detector |
| Weather Resistance | YES | IP44 | Tie |
| Connectivity | Bluetooth, Thread Protocol | 2.4 GHz WiFi, Bluetooth | Tie |
| On Device Alert Sound | YES | YES | Tie |
| On Device Alert Light | YES | YES | Tie |
What the differences mean
What it monitors
The Resideo L1 WiFi Water Leak and Freeze Detector measures temperature and humidity continuously and alerts when either leaves the range you set, so it doubles as a freeze and damp warning. The Eve Water Guard detects water only, with no temperature or humidity reading.
Coverage
Both use a sensing cable rather than a single point. The Resideo L1 WiFi Water Leak and Freeze Detector ships with 5 ft that extends up to a long run, and the Eve Water Guard starts at 6.5 ft and extends even further, so either can trace a utility area.
Power source
The Resideo L1 WiFi Water Leak and Freeze Detector runs on two AA cells rated for about two years, and the Eve Water Guard plugs into a wall outlet. The Eve suits a spot near a socket, the Resideo a spot where only battery power will do.
Smart home fit
The Eve Water Guard is native to Apple HomeKit and Thread and works with Home Assistant. The Resideo L1 WiFi Water Leak and Freeze Detector answers to the First Alert and Resideo apps only, with no Alexa, Google Home, Apple HomeKit, SmartThings or Matter path.
Warranty
The Resideo L1 WiFi Water Leak and Freeze Detector carries a two year warranty against one year for the Eve Water Guard, a small edge if you plan to run it for years in a basement.
Which one to buy if
- you want freeze, temperature and humidity warnings as well as leaks
The Resideo L1 WiFi Water Leak and Freeze Detector tracks temperature and humidity and alerts when either leaves the range you set.
- your smart home runs on Apple HomeKit or Thread
The Eve Water Guard is native to both and automates in the Home app without a manufacturer account.
- there is no outlet at the spot you need to watch
The Resideo L1 WiFi Water Leak and Freeze Detector runs about two years on AA cells, so it is not tied to a socket.
- the risk runs along a long pipe or appliance run
The Resideo L1 WiFi Water Leak and Freeze Detector's 5 ft cable extends up to a long run from a single detector.
- you want automations built in the Home app
The Eve Water Guard exposes its state to HomeKit, so its alert can drive lights and switches directly.
32% OFF
Prime exclusive deal$74.95
$109.95
- + Rating: 4.5
- + Integrations: Apple HomeKit, Home Assistant
- - Price: $74.95 vs $68.00
- - Warranty: 1 year vs 2 years
Winner
$68.00
- + Price: $68.00
- + Warranty: 2 years
- + Sensors: Water Leak, Temperature
- - Rating: 3.8 vs 4.5
- - Integrations: None vs Apple HomeKit, Home Assistant
What owners say
Owners of the Eve Water Guard describe it as reliable and among the smoothest Apple HomeKit integrations in the category, with setup that is a scan-and-add in the Home app and automations configured there. Several report the siren and alert light catching an active leak, a failed toilet flapper or a washing machine drip, in time to prevent real damage, and the extendable sensing cable is the feature they single out most, since one unit can watch a whole appliance run. The repeated complaints are its cost next to spot sensors, the constant wall power it needs, and a small share of units that failed to connect or stopped detecting over time. A few note the fabric cable must absorb a little water before it triggers.
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
- Resideo L1 WiFi Water Leak and Freeze Detector
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Frequently Asked Questions
Which is better overall: Eve Water Guard or Resideo L1 WiFi Water Leak and Freeze Detector?
The Resideo L1 WiFi Water Leak and Freeze Detector, for a hub-free house that wants water, temperature and humidity watched in one box with a long sensing cable. The Eve Water Guard is the better pick inside Apple HomeKit or Thread, where its native integration and loud siren carry more weight.
What is the biggest difference between the Eve Water Guard and the Resideo L1 WiFi Water Leak and Freeze Detector?
What each one measures and how it connects. The Resideo L1 WiFi Water Leak and Freeze Detector joins Wi-Fi on its own and tracks temperature and humidity, while the Eve Water Guard connects through HomeKit or Thread and detects water only.
Do the Eve Water Guard and the Resideo L1 WiFi Water Leak and Freeze Detector need a hub?
Neither needs a bridge to report. The Eve Water Guard speaks Apple HomeKit and Thread directly, and the Resideo L1 WiFi Water Leak and Freeze Detector joins 2.4 GHz Wi-Fi on its own and reports to its app.
Which one warns about freezing pipes?
The Resideo L1 WiFi Water Leak and Freeze Detector. It monitors temperature and humidity and sends an alert when either leaves the range you set, which doubles as a freeze warning. The Eve Water Guard has no temperature or freeze alert.
Who should buy the Eve Water Guard?
Apple HomeKit and Thread households that want to watch a long appliance or pipe run from one unit, with a 100 dB siren on the device and automations in the Home app.
Who should buy the Resideo L1 WiFi Water Leak and Freeze Detector?
A home with no smart hub that wants one battery detector to cover a long run and to warn about freezing pipes and excess humidity, with a 100 dBA buzzer on the unit.
Full comparison table
Compare all 34 Water Leak Sensors side by side
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