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Carbon Monoxide Detectors Comparison - August 2025
6 Best Carbon Monoxide Detectors In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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Overview: Are you looking for a reliable way to protect your family and home from the danger of carbon monoxide poisoning? Carbon monoxide detectors are a must-have for any home, and there are many options for you to choose from. Read on for reviews of the best carbon monoxide detectors available today.
Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
Model
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
Model
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
Model
Carbon Monoxide Alarm, Detector With Digital Display And Audible 85DB Battery Powered, Suitable Camping, Home, School, Office in Accordance EN50291
Model
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)
Model
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)
Brand
Kidde
Brand
Fireangel
Brand
XINDUM
Brand
EITO
Brand
Yezala
Brand
Fenary
Reviews
113,076 reviews
Reviews
2,348 reviews
Reviews
1,876 reviews
Reviews
3,564 reviews
Reviews
612 reviews
Reviews
140 reviews
Features
Worth the money
9.8
Worth the money
9.6
Worth the money
9.4
Worth the money
8.6
Worth the money
9.4
Worth the money
8.9
Easy installation
9.9
Easy installation
9.8
Easy installation
9.6
Easy installation
9.4
Easy installation
9.4
Easy installation
8.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.8
Simple to use
9.9
Simple to use
9.4
Simple to use
9.6
Battery duration
9.9
Battery duration
9.8
Battery duration
9.6
Battery duration
9.1
Battery duration
9.4
Battery duration
8.9
Tech Specs
item weight
115 g
item weight
141 g
item weight
102 g
item weight
100 g
item weight
53.7 g
item weight
100 g
batteries included
Yes
batteries included
Yes
batteries included
Yes
batteries included
No
batteries included
No
batteries included
No
customer reviews
4.7 4.7 out of 5 stars 28, 269 ratings 4.7 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 587 ratings 4.7 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 469 ratings 4.7 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 891 ratings 4.3 out of 5 stars
customer reviews
4.5 4.5 out of 5 stars 153 ratings 4.5 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 35 ratings 4.3 out of 5 stars
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1
Kidde
21% Off
Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
9.9Easy installation
9.9Simple to use
9.9Battery Duration
Why we love it
Portable and easy to install.
Long-lasting with a 10-year alarm life.
Comes with a 7-year warranty.
Main highlights
SAFETY APPROVED: CE and UKCA marked, and Kitemarked to the most up-to-date British Standards Institute (BSI) standard for carbon monoxide alarms (BS EN 50291-1:2018)
LOUD & ACCURATE ALARM: From just 50ppm of CO in the air, the Kidde 5CO will emit a loud 85db piercing alarm alerting occupants to the presence of carbon monoxide
LIGHTWEIGHT & COMPACT: The 5CO’s sleek design allows this life-saving device to blend into your décor, while remaining uncompromising on its strict quality testing
FREE STANDING OR WALL MOUNTED: For ease of installation, the Kidde 5CO model can be placed free standing on any surface, or can be wall mounted with the included screws and wall plugs
BATTERY POWERED: Each alarm comes equipped with 2x AA batteries included, allowing your alarm to be set up immediately upon receipt
7 YEAR WARRANTY: Enjoy peace of mind knowing your alarm is protected with an extensive seven year manufacturer’s warranty
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9.7
2
Fireangel
10% 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
9.9Simple to use
9.8Easy installation
9.8Battery Duration
Why we love it
Detects dangerous CO levels effectively.
Battery replacement is easy and convenient.
Portable for travel protection.
Main highlights
TRAVEL CARBON MONOXIDE DETECTOR: Each portable device comes with an integrated mounting bracket and screws, allowing for easy wall mounting. Measuring 120 x 73 x 35.5 mm, it’s compact enough to travel with, providing on the go holiday protection.
TEST BUTTON: Press the large test button to ensure your CO detector is working properly. A loud, high-pitched sound and the red LED flashing four times will verify that the alarm is functioning correctly.
SLEEP EASY FUNCTION: Press the large test button to silence the low battery alert. This activates the Sleep Easy mode on the carbon monoxide monitor, muting the low battery chirp for 8 hours whilst the amber light flashes. Replace the batteries ASAP.
SAFETY ASSURED: The FA6813 detector holds a CE & UKCA mark and has been designed to conform to the standards BS EN 50291-1: 2008 and EN 50291-2: 2019. Suitable for homes in England and Wales, but not for Scottish homes under the new regulations.
FIREANGEL HOME PROTECTION: In addition to our carbon monoxide detectors, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, smoke, and heat alarms.
CARBON MONOXIDE ALARMS FOR HOME USE: The advanced electrochemical sensor detects dangerous levels of carbon monoxide (CO) in your home, alerting you with 4 loud chirps (85 dB(A) at 3 metres) and a flashing red ‘CO’ LED light. NEVER IGNORE THIS ALARM.
BATTERIES INCLUDED: Each CO monitor comes with 2 replaceable AA batteries. A flashing amber '!' and an audible chirp will alert you when the batteries need replacing. Test your FireAngel carbon monoxide alarm regularly to ensure it is operational.
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9.6
3
XINDUM
39% Off
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
9.8Simple to use
9.6Easy installation
9.6Battery Duration
Main highlights
Low Battery & End of Life Warning: If the battery is low , the CO alarm beeps once every 60 seconds, and the yellow LED indicator flashes once. If the CO detector reaches the end of service life,the carbon monoxide beeps twice every 30 seconds, and Yellow LED indicator flashes twice.
Loud Alarm Warning: Carbon Monoxide can't be found with human natural senses. You can see real-time CO levels on LCD display. When a dangerous level of carbon monoxide is detected, the red LED will flash and the 85dB audible alarm will alert your families.
Easy Intsalltion: The CO alarm can stand freely on the desk, also can be wall mounted with double side tape without drill, or drill to install with screw kits. With the bracket, the CO detector also can be taken down even wall mounted.
Accurate Relialbel CO Detector: Comply with EN 50291 standard, CE Certified Carbon Monoxide alarm, equipped with high accuracy and reliable electrochemical sensor, continuously measure CO concentration in ambient air.
10 Year Battery Operated: The CO Alarm is equipped with 1600mAh Lithium battery (Sealed In). No wiring and sockets required. It can be placed anywhere you want.
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Our ranking system
The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria. We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
Consumer Reviews
We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.
When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.
When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
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9.8 
9.8
1Kidde21% Off
Portable and easy to install.
