10 Best smart carbon monoxide detectors of 2025

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Best Choice

1

X-Sense
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51

15% Off
Main highlights

Smart Connectivity and Alerts
Receive instant alerts and control alarms via app for real-time monitoring.

Ideal for Comprehensive Home Safety
Perfect for multi-level homes, ensuring complete smoke and CO coverage.

User-Friendly App Interface
Customers praise the app's simplicity and ease of use for setup and control.
Key specs
- batteries:5-year CR123A battery
- power source:Battery Powered
- alarm:Alarm
- style:With Base Station
- sensor:Photoelectric
9.9

Exceptional

Our Rating
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Value for Money

2

X-Sense
X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Included), Model XP0A-MR31

23% Off
Main highlights

Voice Alerts for Safety
The alarm provides voice alerts specifying the danger location for quick evacuation.

Ideal for Home Safety
Perfect for homes needing integrated smoke and carbon monoxide detection in one unit.

Easy Setup Praised
Customers love the easy setup and smartphone connectivity for instant alerts.
Key specs
- batteries:1 CR123A included
- power source:Battery Powered
- alarm:Combination Smoke and CO Detector
- style:With Base Station
- sensor:Electrochemical, Photoelectric
9.8

Exceptional

Our Rating
3

X-Sense
X-Sense Wi-Fi Plug-in Carbon Monoxide Detector with AAA Battery Backup, No-Cost App Notifications, XC0C-iA, 1-Pack
Main highlights

Wi-Fi Connectivity and App Alerts
The XC0C-iA connects via 2.4 GHz Wi-Fi, providing app alerts for CO alarms and power status.

Ideal for Home and Travel
Plug-and-play design suitable for home use and travel with a 120 V power supply.

Long Lifespan and Low Maintenance
Customers praise its 10-year lifespan and minimal maintenance needs.
9.7

Exceptional

Our Rating
4

X-Sense

X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 1-Pack
9.5

Excellent

Our Rating

9.9
Easy installation

9.7
Precision

8.7
Battery Duration
5

X-Sense
X-Sense Smart Carbon Monoxide Detector, Wi-Fi CO Detector, Real-Time Push Notifications via X-Sense Home Security App, Replaceable Battery,XC04-WX
Main highlights

Key Features
Connects via 2.4 GHz Wi-Fi without a hub, instant notifications, 10-year sensor, supports 24/7 monitoring service, and free-standing or wall-mounted design.

Ideal Use Cases
Perfect for homes wanting smart CO monitoring with instant phone alerts, and for those seeking added peace of mind with professional emergency dispatch services.

Customer Reviews
Most praised for its reliable and accurate CO monitoring, ease of setup and use, and the peace of mind provided by instant notifications.
Key specs
- color:White
- power source:Battery Powered
- alarm:Audible
- sensor:Electrochemical
- battery:1 Lithium Metal
9.4

Excellent

Our Rating

9.7
Easy installation

9.5
Precision

9.5
Simple to use
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6

X-Sense

X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with No Fee App Notification, Replaceable Battery Powered Smoke Detector and Carbon Monoxide Detector, SC06-WX, 1-Pack

25% Off
9.1

Excellent

Our Rating
7

X-Sense
X-Sense Smart Smoke Detector and Carbon Monoxide Detector with Voice Location, Wi-Fi Smoke Detector Carbon Monoxide Detector Combo with Real-Time App Notifications, XP0A-iR, 1-Pack

21% Off
Main highlights

Real-Time Notifications and Voice Alerts
Receive instant alerts and voice announcements for smoke or CO detection, enhancing safety and response time.

Ideal for Smart Home Integration
Perfect for homes needing independent, app-connected smoke and CO detection without a base station.

Highly Praised Dual Protection
Users appreciate the dual smoke and CO sensors, offering comprehensive safety in one compact device.
Key specs
- batteries:1 CR123A included
- power source:1 CR123A batteries required
- alarm:Talking Alarm Says the Location
- style:Ultra-Slim Design
- sensor:photoelectric smoke, electrochemical CO
9.0

Excellent

Our Rating
8

Kidde
Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug In Wall, WiFi, Alexa Compatible Device, Voice & App Alerts

29% Off
Main highlights

Key Features
2-in-1 CO detector and Indoor Air Quality Monitor with voice alarm, easy installation, compatible with smart devices, and WiFi-enabled for remote alerts.

Ideal Use Cases
Perfect for homes using gas appliances, recently painted or renovated spaces, or areas where air quality concerns are paramount.

Customer Praise
Most reviews highlight its ease of use, reliable connectivity with smart home systems, and peace of mind from combined CO and air quality monitoring.
Key specs
- batteries:1 CR2 batteries required
- power source:Plug-In
- alarm:Carbon Monoxide & Indoor Air Quality
- style:Contemporary
- sensor:Electrochemical, Indoor Air Quality
8.9

Very Good

Our Rating

9.7
Tech Support

8.0
Easy installation

8.0
integrate with Alexa
9

X-Sense

X-Sense Smart Carbon Monoxide Detector XC0C-iR, Silence via App, CO Alarm with LCD Digital Display, Carbon Monoxide Alarm with Replaceable Battery, 1-Pack
8.8

Very Good

Our Rating
10

Amazon
Amazon Smart Air Quality Monitor – Know your air, Works with Alexa
Main highlights

Comprehensive Air Monitoring
Tracks particulate matter, VOCs, CO, humidity, and temperature for a complete air quality overview.

Ideal for Health-Conscious Homes
Perfect for monitoring air quality during wildfires, heating seasons, or in homes with tight insulation.

Sensitive VOC Detection
Highly praised for its fast and sensitive detection of volatile organic compounds.
8.5

Good

Our Rating

9.9
Easy installation

8.0
Precision

8.0
integrate with Alexa

10 Best smart carbon monoxide detectors of 2025

1

X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51

2

X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Included), Model XP0A-MR31

3

X-Sense Wi-Fi Plug-in Carbon Monoxide Detector with AAA Battery Backup, No-Cost App Notifications, XC0C-iA, 1-Pack

4

X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 1-Pack

9.9

9.7

8.7

5

X-Sense Smart Carbon Monoxide Detector, Wi-Fi CO Detector, Real-Time Push Notifications via X-Sense Home Security App, Replaceable Battery,XC04-WX

9.7

9.5

9.5

6

X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with No Fee App Notification, Replaceable Battery Powered Smoke Detector and Carbon Monoxide Detector, SC06-WX, 1-Pack

7

X-Sense Smart Smoke Detector and Carbon Monoxide Detector with Voice Location, Wi-Fi Smoke Detector Carbon Monoxide Detector Combo with Real-Time App Notifications, XP0A-iR, 1-Pack

8

Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug In Wall, WiFi, Alexa Compatible Device, Voice & App Alerts

9.7

8.0

8.0

9

X-Sense Smart Carbon Monoxide Detector XC0C-iR, Silence via App, CO Alarm with LCD Digital Display, Carbon Monoxide Alarm with Replaceable Battery, 1-Pack

10

Amazon Smart Air Quality Monitor – Know your air, Works with Alexa

9.9

8.0

8.0

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