10 Best Carbon Monoxide Detector 2025 in the UK

The FireAngel Carbon Monoxide Alarm FA6813 is designed to offer reliable home safety with its advanced electrochemical sensor, which is highly effective in detecting dangerous levels of carbon monoxide. It alerts you through loud chirps and a flashing red light, adding a visual cue to the audible alarm. The test button is a handy feature to ensure the device is operational, with additional feedback through sound and light indicators. This detector is powered by two AA batteries, which are included. The Sleep Easy function allows you to mute low battery alerts for eight hours, providing a temporary reprieve at night or when immediate battery replacement isn't convenient. However, it's important to replace the batteries promptly once alerted.

The compact size and included mounting bracket make it suitable for both home use and travel, offering portable safety. Its portability is a highlight for those frequently on the move or for holiday protection. This product complies with relevant safety standards, although it is not suitable for Scottish homes under new regulations. This could be a drawback for users in that region.

Despite its strengths, the FireAngel CO Alarm lacks interconnectivity features, meaning it cannot connect with other alarms or smart home systems, which might be a limitation for users seeking integrated home safety solutions. The 10-year sensor life is a strong point, offering a reliable long-term safety solution. Customers have rated it highly, reflecting satisfaction with its performance. This makes it a great choice for users prioritizing reliable CO detection in a straightforward, portable package, as long as interconnectivity isn't a primary concern.

The Kidde 5CO Battery Powered Carbon Monoxide Alarm is a reliable choice for monitoring carbon monoxide levels in your home. It features a carbon monoxide sensor that accurately detects CO levels and sounds an 85dB alarm when CO is present, making it very effective at alerting occupants. The alarm is powered by two AA batteries, which are included, ensuring you can set it up immediately without needing additional purchases. The battery power source also means you won't need to worry about hardwiring it to your home electrical system, offering flexibility in installation locations.

This model can either stand alone on any surface or be wall-mounted with the provided screws and wall plugs, adding to its versatility. The compact and lightweight design allows it to blend seamlessly into your home décor without being intrusive. One of its strong points is the extensive seven-year warranty, providing peace of mind and ensuring long-term reliability.

However, the product lacks interconnectivity features, meaning it cannot communicate with other alarms in your home. This can be a drawback for larger homes where you may want multiple detectors to work together. Additionally, while it has a clear audible alert, it does not have a digital display to show CO levels or other alerts, which some users might find helpful. The lifespan of the alarm is around ten years, which is standard for carbon monoxide detectors. With a high customer rating of 4.6 out of 5 stars from over 30,000 reviews, it’s clear that many users find this model to be a dependable and satisfactory choice for carbon monoxide detection.

The FireAngel Carbon Monoxide Detector FA3820 offers a comprehensive solution for home and travel safety. It features an advanced electrochemical sensor that detects dangerous CO levels and provides loud, clear alerts with 85 dB chirps and a flashing red LED light. One of its standout features is the high sensitivity mode, which preemptively alerts you if CO levels are expected to rise significantly, giving you time to ventilate your space.

The 10-year sealed battery is a huge plus, ensuring you won’t need to replace the battery for the device’s entire lifespan, and it will alert you when it’s time for a new unit with a flashing amber light and beep. Additionally, the alarm has a memory feature to inform you of CO detections that occurred while you were away, which is reassuring for maintaining ongoing safety. Its compact size and included mounting hardware make it versatile and easy to install or take with you on trips.

Certified by the British Standards Institute, it meets rigorous safety standards. However, the lack of interconnectivity might be a downside for some users who want a more integrated safety system. With a 4.6-star rating from over 1,900 reviews, it’s well-regarded by users for its reliability and ease of use. This detector is best suited for those looking for a dependable, portable, and long-lasting CO alarm without the need for frequent maintenance.