We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy

10 Best Carbon Monoxide Detectors

From leading brands and best sellers available on the web.
By clicking on a link to a third party's website, log data is shared with that third party.

45,000 reviews analyzed

#1
Best Choice
Kidde 5DCO
Safelincs

Kidde 5DCO Digital Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life Digital Display CO Alarm - 7 Year Warranty

Fast Delivery
10.0
1 312 bought in past month
#2
Value for Money
Kidde 5CO
Kidde

Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home

33%OFF

Fast Delivery
9.4
1 210 bought in past month
Shipping from Amazon's UK regional warehouses
#3
FireAngel
Fireangel

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, Single

28%OFF

Fast Delivery
9.4
1 108 bought in past month
#4
Google Nes
Google

Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Wired)

Fast Delivery
7.6
1 006 bought in past month
#5
FireAngel
Fireangel

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

Fast Delivery
7.3
904 bought in past month
#6
X-Sense Wi
X-Sense

X-Sense Wi-Fi Combination Smoke and Carbon Monoxide Alarm with English Voice Alerts, Smart Smoke Alarm for Home with Replaceable Battery, XP0A-iR, 2-Pack

24%OFF

Fast Delivery
7.3
802 bought in past month
#7
FireAngel
Fireangel

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

15%OFF

Fast Delivery
7.3
700 bought in past month
#8
FireAngel
Fireangel

FireAngel Combination Smoke and Carbon Monoxide Alarm for Home - SCB10-R, 10 Year Life, Dual Carbon Monoxide Detector and Smoke Alarm with Test and Hush Button - Combined CO and Fire Alarm - White

Fast Delivery
7.3
598 bought in past month
#9
FireAngel
Fireangel

FireAngel FA6812 Digital Carbon Monoxide Detector with LCD Screen, 10-Year CO Alarm Sensor, Portable Carbon Monoxide Alarm for Home, Travel, Caravan

5%OFF

Fast Delivery
7.0
496 bought in past month
#10
FireAngel
Fireangel

FireAngel Pro Connected Smart Carbon Monoxide Alarm for Home - FP1820W2‑R Wireless, Interlink, 10-Year Battery Carbon Monoxide Detector with App Compatibility - Portable, Travel CO Alarm - White

Fast Delivery
7.0
394 bought in past month

More great picks just for you

X-Sense Wi
X-Sense

X-Sense Wi-Fi Combination Smoke Alarm and Carbon Monoxide Alarm with Replaceable Battery, Smart Fire Alarm Compatible with X-Sense Home Security App, SC07-WX, 1-Pack

22%OFF

Fast Delivery
292 bought in past month
Carbon Mon
WISUALARM

Carbon Monoxide Detector, 10 Years Battery Carbon Monoxide Alarm, CO Alarm with Test Silence Button,Carbon-Monoxide-Detector Comforms to EN 50291 Standard

15%OFF

Fast Delivery
190 bought in past month
Carbon Mon
XINDUM

Carbon Monoxide Detector with LCD Digital Display, CE Certified CO Alarm with Sealed in 10 Year Battery, Standalone Audible CO Detector for Home,White,1 Pack

Fast Delivery
88 bought in past month
X-Sense Co
X-Sense

X-Sense Combination Smoke and Carbon Monoxide Alarm with LCD Display & 10-Year Battery, Smoke Alarm for Home Compliant with EN 14604 and EN 50291 Standards, SC07

30%OFF

Fast Delivery
X-Sense Ca
X-Sense

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, 1-Pack

25%OFF

Fast Delivery
Kidde 7DCO
Kidde

Kidde 7DCOC 7DCO Kidde Carbon Monoxide Alarm, White

Fast Delivery
Kidde 10SC
Safelincs

Kidde 10SCO Combination Smoke and Carbon Monoxide Alarm with Voice Notification and Alarm - Dual CO Detector and Fire Alarm with 10 Year Sensor Life - 10 Year Warranty

Fast Delivery
Explore other best-rated products in this category
Aico Ei302
Ei3028

Aico Ei3028 Mains Powered Multi-Sensor Heat & Carbon Monoxide Alarm

29%OFF

Fast Delivery
Google Nes
Nest

Google Nest Protect 2nd generation smoke and carbon monoxide detector (wired)

Fast Delivery
Carbon Mon
Fenary

Carbon Monoxide Detector,Carbon Monoxide Alarm with PPM Display,CO Alarm with Test Button Battery Powered,CO Detector Monitor with 85 dB Audible for Home and Holiday(Batteries NOT Included)

Fast Delivery

Our Top Picks

#1

Winner

Kidde 5DCO Digital Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life Digital Display CO Alarm - 7 Year Warranty

Kidde 5DCO Digital Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life Digital Display CO Alarm - 7 Year WarrantySafelincs
amazon-logoView Product

The Kidde 5DCO Digital Carbon Monoxide Alarm is a reliable choice for home safety in the UK. It uses a carbon monoxide sensor with a long 10-year lifespan, meaning you won’t need to replace the whole unit often. Powered by two AA batteries (included), it’s easy to maintain, and it alerts you with a warning chirp plus a clear digital display showing CO levels starting from 30ppm. The alarm sounds at 50ppm, which is standard for domestic safety. Its compact, slim design fits nicely in various rooms without being obtrusive.

This model carries important safety marks including BS EN 50291-1, CE, and UKCA certifications, ensuring it meets UK and European safety standards. The display and audible alerts make it easy to understand the current air quality, and it clearly warns when batteries are low. However, it’s a single unit without interconnectivity, so if you have a larger home, you’ll need multiple alarms that don’t communicate with each other. Also, it doesn’t include extra features like smartphone alerts or voice warnings, which some newer models offer.

This alarm is well suited for those looking for a straightforward, dependable CO detector with a long sensor life and easy battery replacement, especially in smaller homes or flats.

View Product
#2

Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home

33%OFF

Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for HomeKidde
amazon-logoView Product

The Kidde 5CO Battery Powered Carbon Monoxide Alarm is a compact and lightweight device designed to efficiently detect carbon monoxide levels. It uses a carbon monoxide sensor and operates on 2 AA batteries, included for immediate setup. The alarm can either stand freely on a surface or be wall-mounted, offering flexibility in installation.

With a loud 85db alarm, it alerts occupants when CO levels reach 50ppm, ensuring timely detection of harmful CO concentrations. The unit is backed by a seven-year warranty, adding a layer of reliability and peace of mind. The sleek design allows it to blend seamlessly into various décors without compromising on quality.

However, it lacks interconnectivity features, meaning it does not link with other alarms or home systems, which might be a drawback for users seeking a more integrated safety solution. Additionally, it does not offer digital displays or advanced alerts, focusing instead on its primary function of audible alarms. The Kidde 5CO is certified and ranks highly in customer satisfaction, making it a dependable choice for individuals or households needing a straightforward and effective carbon monoxide detector.

View Product
#3

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, Single

28%OFF

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, SingleFireangel
amazon-logoView Product

The FireAngel Carbon Monoxide Alarm and Detector - FA6813 uses an advanced electrochemical sensor, making it highly effective in detecting dangerous levels of carbon monoxide. It provides loud alerts (85 dB(A) at 3 metres) and a flashing red LED light, ensuring that you are immediately aware of any danger. The included test button allows you to regularly check the functionality of the device, which is a crucial feature for maintaining safety in your home.

Additionally, it comes with 2 replaceable AA batteries, and it has a Sleep Easy function that mutes low battery alerts for 8 hours, adding convenience for users. The device is compact and portable, which makes it suitable for travel and on-the-go protection. It also includes an integrated mounting bracket and screws for easy wall installation. However, it is important to note that it does not meet the new regulations for homes in Scotland.

The device is CE & UKCA certified and conforms to BS EN 50291-1: 2008 and EN 50291-2: 2019 standards, ensuring it meets safety requirements. While it lacks interconnectivity features that some high-end models offer, this carbon monoxide detector is highly rated by users (4.7 out of 5 stars from 3,895 ratings) and is ranked as the top product in its category. This makes it an excellent choice for individuals looking for a reliable and portable carbon monoxide detector for their home or travels.

View Product

Buying Guide for the Best Carbon Monoxide Detectors

Choosing the right carbon monoxide detector is crucial for ensuring the safety of your home and family. Carbon monoxide is a colorless, odorless gas that can be deadly, so having a reliable detector is essential. When selecting a carbon monoxide detector, consider the following key specifications to make an informed decision that best suits your needs.
Sensor TypeThe sensor type in a carbon monoxide detector determines how it detects the presence of carbon monoxide. Common types include electrochemical, biomimetic, and metal oxide semiconductor sensors. Electrochemical sensors are highly accurate and respond quickly to CO levels, making them ideal for most homes. Biomimetic sensors mimic the human body's response to CO and are also reliable but may be slower to react. Metal oxide semiconductor sensors are less common and can be less accurate. Choose a detector with an electrochemical sensor for the best performance.
Power SourceCarbon monoxide detectors can be powered by batteries, hardwired into your home's electrical system, or plugged into an outlet. Battery-powered detectors offer flexibility in placement and continue to work during power outages, but require regular battery replacement. Hardwired detectors are more permanent and often come with battery backup, ensuring continuous operation. Plug-in detectors are easy to install but may be limited by outlet locations. Consider your home's layout and choose a power source that ensures consistent and reliable operation.
Display and AlertsThe display and alert features of a carbon monoxide detector provide critical information about CO levels and the device's status. Some detectors have digital displays that show real-time CO levels, which can be helpful for monitoring and peace of mind. Audible alarms are standard and should be loud enough to wake you during sleep. Some models also offer voice alerts or visual indicators like flashing lights. Choose a detector with clear and effective alert features to ensure you are promptly informed of any danger.
InterconnectivityInterconnectivity allows multiple carbon monoxide detectors to communicate with each other. If one detector senses CO, all interconnected detectors will sound the alarm, providing comprehensive coverage throughout your home. This feature is particularly useful in larger homes or multi-story buildings. Look for detectors that can be interconnected wirelessly or through hardwiring to enhance your home's safety.
Additional FeaturesSome carbon monoxide detectors come with additional features such as smoke detection, smart home integration, or mobile app connectivity. Smoke detection can provide dual protection, while smart home integration allows you to monitor CO levels remotely and receive alerts on your smartphone. Mobile app connectivity can offer convenience and added peace of mind. Consider these features based on your lifestyle and preferences to enhance the functionality of your carbon monoxide detector.
CertificationCertification ensures that a carbon monoxide detector meets safety standards and has been tested for reliability. Look for detectors that are certified by recognized organizations such as UL (Underwriters Laboratories) or CSA (Canadian Standards Association). Certification provides assurance that the detector will perform effectively in detecting carbon monoxide and alerting you to danger. Always choose a certified detector to ensure the highest level of safety.