10 Best Carbon Monoxide Detectors 2025 in the UK

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.

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.

The FireAngel Carbon Monoxide Detector FA3820 is a reliable choice for home safety. It uses an advanced electrochemical sensor to detect CO levels and alerts you with loud chirps and a flashing red light, ensuring you won't miss a warning. The high sensitivity mode is a standout feature, providing quicker alerts if CO levels are predicted to rise dangerously. This is particularly useful for prompt action in emergencies. The 10-year sealed battery is both a strength and a convenience, as it ensures long-term functionality without the need for battery replacements. When it's time to replace the device, it alerts you with a flashing light and an audible beep.

One of the notable features is its alarm memory, which can notify you of CO alarms in your absence. The compact and portable design makes it easy to take on trips, offering protection wherever you go. The included mounting bracket and screws simplify installation. The device is certified by well-regarded institutions like the British Standards Institute, making it a trustworthy addition to any home. On the downside, it's worth noting that the device may not be deliverable outside mainland UK, which could be a limitation for some potential buyers.

Additionally, while the device is made primarily of plastic, it is lightweight and durable. The clear color and oval shape ensure it blends well with various home decors. This CO detector is suitable for any domestic or rental property. Despite its specific delivery limitations, customers have rated it highly, reflecting its reliability and effectiveness.