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Carbon Monoxide Detector Comparison - August 2025
6 Best Carbon Monoxide Detector 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: When it comes to protecting your home and family from the dangers of carbon monoxide, you want to make sure you have the best possible detector. But with so many different brands and models on the market, how can you know which one is right for you?
Our team of experts has done the research for you and compared the top carbon monoxide detectors on the market. We’ve looked at features, pricing, and customer reviews to help you find the best one for your needs.
Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
Model
2 Pack Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
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 Alarm, Detector With Digital Display And Audible 85DB Battery Powered, Suitable Camping, Home, School, Office in Accordance EN50291
Model
Safeliveo Carbon Monoxide Alarm, Carbon Monoxide Detector with Silence Button 10 Years Sensor Life for Home Safety, CO alarms Replaceable Batteries Powered - EN 50291 Standard,Standalone,1 Pack
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
Kidde
Brand
Fireangel
Brand
EITO
Brand
Safeliveo
Brand
Fenary
Reviews
84,807 reviews
Reviews
1,353 reviews
Reviews
1,761 reviews
Reviews
2,673 reviews
Reviews
105 reviews
Reviews
105 reviews
Features
Worth the money
9.8
Worth the money
9.8
Worth the money
9.6
Worth the money
8.6
Worth the money
8.1
Worth the money
7.9
Easy installation
9.9
Easy installation
9.9
Easy installation
9.8
Easy installation
9.4
Easy installation
9.1
Easy installation
8.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.8
Simple to use
9.6
Battery duration
9.9
Battery duration
9.6
Battery duration
9.8
Battery duration
9.1
Battery duration
8.6
Battery duration
8.4
Tech Specs
item weight
115 g
item weight
280 g
item weight
141 g
item weight
100 g
item weight
180 g
item weight
100 g
batteries included
Yes
batteries included
Yes
batteries included
Yes
batteries included
No
batteries included
Yes
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 451 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
4.3 4.3 out of 5 stars 891 ratings 4.3 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 35 ratings 4.7 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 35 ratings 4.3 out of 5 stars
batteries required
Yes
batteries required
Yes
batteries required
Yes
batteries required
Yes
batteries required
Yes
batteries required
Yes
product dimensions
12.6 x 3.5 x 7.2 cm 115 g
product dimensions
12.2 x 3.8 x 9.6 cm 280 g
product dimensions
5 x 12.3 x 8 cm 141 g
product dimensions
9.5 x 9.5 x 4.3 cm 100 g
product dimensions
-
product dimensions
10 x 1 x 10 cm 100 g
style
Single Unit
style
Twin Pack
style
Single Pack
style
Safety, Simple
style
1 PACK CO04
style
-
batteries
2 AA batteries required. included
batteries
2 AA batteries required. included
batteries
-
batteries
3 AAA batteries required.
batteries
2 AA batteries required. included
batteries
-
included components
Screws for wall mounting optional , Batteries
included components
4 x AA Alkaline Batteries, 2 x Fixing Kit Includes Screws & Rawl Plugs , 2 x KE2030DCR Carbon Monoxide Alarm
Here are the top 3 recommended products with more information to help you find the right product for you
9.7
1
Kidde
32% 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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9.6
2
Kidde
2 Pack Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
9.9Easy installation
9.9Simple to use
9.8worth the money
Why we love it
Accurate detection with loud, clear alarm for safety.
Easy setup with included batteries and wall kit.
Compact design, unobtrusive and aesthetically pleasing.
Main highlights
Sleek & compact - Dimensions (HxWxD): 61 x 96 x 38mm
LED lights indicate the current status of the carbon monoxide alarm & a low battery warning sounds when they need replacing
Includes 2 x AA alkaline batteries and wall fixing kit is included for easy setup
3 years manufacturer’s warranty | CE marked, TUV Certified to EN 50291-1:2018 & UKCA tested and certified
10-year Carbon Monoxide sensor accurately detects from 50 ppm of CO gas in the air and emits a loud, clear alarm to alert residents
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9.5
3
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
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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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 
9.7
1Kidde32% Off
Portable and easy to install.
