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.
Carbon Monoxide Detectors Comparison - May 2025
7 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.
Advertising Disclosure
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
Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
Model
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
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, CO Detector With LED display (AA Battery NOT Included) UK Patent No.: 6332482
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
Kidde
Brand
Fireangel
Brand
Safeliveo
Brand
EiBEST
Brand
Fenary
Reviews
113,076 reviews
Reviews
2,348 reviews
Reviews
1,504 reviews
Reviews
5,068 reviews
Reviews
140 reviews
Reviews
1,424 reviews
Reviews
140 reviews
Features
Worth the money
9.8
Worth the money
9.6
Worth the money
9.8
Worth the money
8.6
Worth the money
8.1
Worth the money
7.9
Worth the money
7.7
Easy installation
9.9
Easy installation
9.8
Easy installation
9.9
Easy installation
9.3
Easy installation
8.9
Easy installation
8.6
Easy installation
8.6
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.1
Simple to use
9.4
Simple to use
9.3
Simple to use
9.1
Instruction
9.9
Instruction
9.9
Instruction
9.9
Instruction
9.1
Instruction
8.6
Instruction
8.6
Instruction
8.4
Tech Specs
item weight
115 g
item weight
141 g
item weight
138 g
item weight
95 g
item weight
180 g
item weight
90 g
item weight
100 g
batteries included
Yes
batteries included
Yes
batteries included
No
batteries included
Yes
batteries included
Yes
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 376 ratings 4.7 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 1, 267 ratings 4.6 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 356 ratings 4.3 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
No
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
5 x 12.3 x 8 cm 141 g
product dimensions
9.6 x 6.1 x 3.8 cm 138 g
product dimensions
3.3 x 12.5 x 6.7 cm 95 g
product dimensions
-
product dimensions
12 x 12 x 4 cm 90 g
product dimensions
10 x 1 x 10 cm 100 g
included components
Screws for wall mounting optional , Batteries
included components
Carbon Monoxide Alarm, 2 x AA Batteries, Manual
included components
-
included components
1 x Carbon Monoxide Detector with sealed battery , 1 x Manual
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1
Kidde
17% 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
9.9Instruction
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 monoxid
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
Show more
9.7
2
Fireangel
19% 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
9.9Instruction
9.8Easy installation
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.
Show more
9.5
3
Kidde
Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
9.9Easy installation
9.9Simple to use
9.9Instruction
Why we love it
Accurate CO detection at 50 ppm.
Compact design fits anywhere.
Long-lasting with low battery warning.
Main highlights
TUV Certified to EN 50291-1:2018
Suitable for installations in homes in England and Wales (not suitable for homes in Scotland under the new 2022 legislation)
Sleek & compact - dimensions (HxWxD): 61 x 96 x 38mm
Provides low battery warning when batteries require replacement
Electro-chemical CO sensor accurately detects the presence of Carbon Monoxide and emits a loud, clear alarm to alert residents
CE marked, and UKCA tested and certified
Accurately alarms from 50 ppm of CO in the air
3 Year Manufacturer’s Warranty
Show more
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.
Related deals you might like for carbon monoxide detectors
Advertising Disclosure
9.8 
9.8
1Kidde17% Off
Portable and easy to install.
