Best Carbon Monoxide Detectors of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Carbon monoxide detectors are essential safety devices that alert individuals to the presence of harmful levels of carbon monoxide gas in the air. Carbon monoxide is a colourless, odourless gas that can be produced by the incomplete combustion of fuels such as gas, oil, and wood. Exposure to high levels of carbon monoxide can cause serious health problems, including headaches, dizziness, nausea, and even death. Carbon monoxide detectors are designed to detect the presence of carbon monoxide and alert individuals to the danger, allowing them to take necessary precautions to protect themselves and their families.

At a Glance: Our Top Picks

Kidde 2030-DCR Compact Carbon Monoxide Alarm Cover #TOP 1
Kidde 2030-DCR Compact Carbon Monoxide Alarm
ftb score rating icon 9.9
FireAngel FA6813 Carbon Monoxide Detector with Test Button Cover #TOP 2
FireAngel FA6813 Carbon Monoxide Detector with Test Button
ftb score rating icon 9.8
Kidde 5CO Battery Carbon Monoxide Alarm Cover #TOP 3
Kidde 5CO Battery Carbon Monoxide Alarm
ftb score rating icon 9.6

Top 10 Carbon Monoxide Detectors

#TOP 1

Kidde 2030-DCR Compact Carbon Monoxide Alarm

Kidde 2030-DCR
White
Kidde 2030-DCR Compact Carbon Monoxide Alarm Cover
Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries

The Kidde 2030-DCR Alarm is designed to keep you safe by detecting carbon monoxide at levels as low as 50 ppm. Its advanced electro-chemical sensor provides accurate readings, allowing for prompt alerts when CO is present. This compact device, measuring just 61 x 96 x 38mm, is perfect for discreet installations in homes across England and Wales. You will also benefit from a low battery warning, ensuring you are always aware when it’s time to replace the batteries.

What We Like
Accurate CO detection
Compact and sleek design
Low battery warning
Suitable for English and Welsh homes
#TOP 2

FireAngel FA6813 Carbon Monoxide Detector with Test Button

FA6813-EUX10
FireAngel FA6813 Carbon Monoxide Detector with Test Button Cover
FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor with Test Button

The FireAngel FA6813 Detector ensures your home is safe from carbon monoxide (CO) with its advanced electrochemical sensor. This device alerts you with loud chirps and a flashing LED light when dangerous CO levels are detected. You can easily verify its functionality using the large test button, ensuring peace of mind. Additionally, the included AA batteries ensure your detector is always operational, with alerts for low battery, keeping you informed at all times.

What We Like
Advanced electrochemical sensor
Loud alert system
Easy functionality testing
Battery replacement alerts

Kidde 5CO Battery Carbon Monoxide Alarm

White
Kidde 5CO Battery Carbon Monoxide Alarm Cover
Kidde 5CO Battery Powered Carbon Monoxide Alarm 10 Year Life

The Kidde 5CO Alarm continuously monitors for carbon monoxide, alerting you with a loud alarm upon detection for your safety. Its versatile design allows you to easily wall mount it or use it as a free-standing unit, making it perfect for holidays or travel. Powered by three replaceable AA batteries, this alarm ensures you are protected wherever you go. With its long 10-year life, you can enjoy peace of mind knowing it will keep your environment safe for years.

What We Like
Continuous CO monitoring
Wall mounted or free standing
Battery operated
Long 10-year alarm life
#TOP 4

FireAngel FA3820 Portable Carbon Monoxide Detector

FA3820
Clear
FireAngel FA3820 Portable Carbon Monoxide Detector Cover
FireAngel Carbon Monoxide Detector 10-Year Life Sealed Battery - FA3820 Carbon Monoxide Alarm for Home and Holiday - Portable CO Alarm - Travel Carbon Monoxide Detector and Monitor - White

The FireAngel FA3820 Detector features an advanced electrochemical sensor that alerts you to dangerous carbon monoxide levels with loud chirps and a flashing LED light. Its enhanced sensing mode provides quicker alerts by predicting CO levels that may rise to harmful levels, ensuring your safety is prioritised. The device is equipped with a 10-year sealed battery, eliminating the hassle of frequent replacements. Additionally, the alarm memory function notifies you of any CO alarms that occurred in your absence, giving you peace of mind knowing you can react promptly.

What We Like
Advanced CO detection sensor
Quick alert system
10-year sealed battery
Alarm memory feature
#TOP 5

Kidde Carbon Monoxide Alarm - Travel Ready

White
Kidde Carbon Monoxide Alarm - Travel Ready Cover
Kidde Carbon Monoxide Alarm - 2 Pack

The Kidde CO Alarm offers continuous monitoring for carbon monoxide, ensuring your safety with a loud alarm on detection. This device can be easily wall mounted or used as a free-standing unit, making it perfect for holidays or travel. It runs on three replaceable AA batteries, providing flexibility in placement without the need for power outlets. With a compact design, it’s convenient to carry wherever you go, giving you peace of mind while enjoying your time away from home.

What We Like
Continuous CO monitoring
Wall mounted or free standing
Battery operated
Ideal for travel
#TOP 6

USBNOVEL Carbon Monoxide Alarm with LED Display

WJ-CO605
USBNOVEL Carbon Monoxide Alarm with LED Display Cover
Carbon Monoxide Detector,Carbon Monoxide Alarm With LED display, CO Alarms Monitor for Home Safety,Comply with EN50291 Standard (AA Battery NOT Included)

The USBNOVEL CO Alarm is designed to keep you safe by continuously monitoring carbon monoxide levels with its sensitive electrochemical sensor. Its LED display provides you with clear and easy-to-read values, allowing you to quickly assess the situation. When dangerous levels are detected, the alarm emits a loud sound and flashes a red light, ensuring you are alerted promptly. The unit is also incredibly easy to install, requiring no special tools, making it convenient for any home setup.

What We Like
Easy to install
Clear LED display
Loud alarm for safety
Continuous monitoring
Compact design
#TOP 7

X-Sense CO Detector with Digital Display

XC0C-SR
Yellow467
1-PACK
X-Sense CO Detector with Digital Display Cover
X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Alarm for Home with CO Peak Value Memory, XC0C-SR

The X-Sense CO Alarm offers essential protection against the silent danger of carbon monoxide. With a 10-year lifespan, you can rest assured that your loved ones are safe for a full decade. Its versatile design allows you to place it on any flat surface or mount it on the wall, providing flexibility in placement. The sleek and compact size means it will fit seamlessly into your home decor. Additionally, the intuitive buttons make it easy for you to check CO levels or silence the alarm, ensuring you can act quickly in urgent situations.

What We Like
Long-lasting 10-year sensor
Flexible placement options
Sleek and compact design
Easy-to-use buttons
Clear display of CO levels
#TOP 8

FireAngel FA3820 Portable Carbon Monoxide Detector

FA3820-T2
Clear
FireAngel FA3820 Portable Carbon Monoxide Detector Cover
FireAngel Carbon Monoxide Detector 10-Year Life Sealed Battery - FA3820 Carbon Monoxide Alarm for Home and Holiday - Portable CO Alarm - Travel Carbon Monoxide Detector and Monitor - 2-Pack - White

The FireAngel FA3820 Detector is an essential safety device for your home. Its advanced electrochemical sensor detects harmful carbon monoxide levels, alerting you with loud chirps and a flashing LED light. The enhanced sensing mode provides an early warning if CO levels are predicted to rise, ensuring your safety. With a sealed 10-year battery, you won't have to worry about frequent replacements. Additionally, the alarm memory feature keeps you informed about previous alerts, giving you peace of mind when you are away.

What We Like
High sensitivity CO detection
10-year sealed battery
Memory for past alarms
Portable and travel-friendly
Easy wall mounting
#TOP 9

Yezala Mini Carbon Monoxide Detector with LCD Display

CDR-816
1pcs
Yezala Mini Carbon Monoxide Detector with LCD Display Cover
Mini Carbon Monoxide Detector, Battery Powered CO monoxide Alarm with LCD Digital Display for Home and Car Safety, CO Monitor Conforms to EN 50291 Standad (1pcs)

The Yezala CO Alarm is designed to keep you and your loved ones safe by providing accurate detection of carbon monoxide gas leaks. Its advanced electrochemical sensitivity sensor ensures quick identification of potential hazards, reducing the chances of false alarms. You will appreciate the light and sound warnings, which include an 85dB alarm and flashing red LED for immediate alert. Installation is a breeze, requiring just a few simple steps, while the clear digital display allows you to monitor real-time CO levels, ensuring peace of mind in your home or car.

What We Like
Accurate carbon monoxide detection
Real-time monitoring and alerts
Easy to install
Clear digital display
#TOP 10

FireAngel FA3322 Digital Carbon Monoxide Detector

FA3322
White
FireAngel FA3322 Digital Carbon Monoxide Detector Cover
FireAngel Digital Carbon Monoxide Detector with 10-Year Sealed for Life Battery - FA3322 Humidity, Temperature and CO Alarm - Portable Carbon Monoxide Alarms for Home and Travel - CO Detector Monitor

The FireAngel FA3322 Detector provides peace of mind with its digital display and advanced sensor, ensuring high levels of carbon monoxide detection in your home. If dangerous CO levels are detected, you will be alerted with loud chirps and flashing safety advice to evacuate immediately. Additionally, this device offers temperature and humidity alerts, notifying you when these levels reach extremes, making it ideal for bedrooms and living spaces. With a lifetime battery, you won't need to worry about changing batteries, ensuring continuous protection.

What We Like
High CO level alerts
Temperature and humidity readings
10-year sealed battery
Portable and easy to use
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Where should a carbon monoxide detector be placed?

Because carbon monoxide is slightly lighter than air and also because it may be found with warm, rising air, detectors should be placed on a wall about 5 feet above the floor. The detector may be placed on the ceiling. Do not place the detector right next to or over a fireplace or flame-producing appliance.

2. What rooms need carbon monoxide detectors?

The NFPA recommends that you install a carbon monoxide alarm, like smoke alarms, on every level of your home, inside every bedroom, and outside each sleeping area.

3. How many carbon monoxide detectors are required in a house?

As mentioned, the CPSC recommends at least one carbon monoxide detector on each level of a home, outside sleeping areas.

4. What can trigger a carbon monoxide alarm?

Things That Trigger Carbon Monoxide Detectors. Malfunctioning gas appliances – Any gas appliance can emit CO if it's not getting the correct gas to air ratio. ... Air leaks – Ductwork leaks can pull CO into your home if you use any vented gas appliances, like a dryer, water heater or combustion furnace.

Editor's Notes

During our carbon monoxide detector research, we found 146 carbon monoxide detector products and shortlisted 10 quality products. We collected and analyzed 319,520 customer reviews through our big data system to write the carbon monoxide detectors list. We found that most customers choose carbon monoxide detectors with an average price of £18.92.

The carbon monoxide detectors are available for purchase. We have researched hundreds of brands and picked the top brands of carbon monoxide detectors, including Kidde, Fireangel, USBNOVEL, X-Sense, Yezala. The seller of top 1 product has received honest feedback from 2,631 consumers with an average rating of 4.9.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.