7 Best Carbon Monoxide Detectors of 2024

Kidde Safety have been producing fire safety products in the UK since 1917. With more than a hundred years of experience making smoke detectors and alarms, fire extinguishers, fire blankets, and even escape ladders, they know a thing or two about home safety.

The Model 5CO Kidde carbon monoxide alarm is a simple, easy-to-use and reliable carbon monoxide detector. It’s as simple as pulling out the battery tab, placing it where it needs to be and hitting the test button on a regular basis. It’s one of the best carbon monoxide detectors in the UK for portable use, such as when camping or in a campervan, because it’s so light and easy to store, but it still detects as well as any of the bigger units on the list.

Possibly the best-known maker of fire alarms, Fireangel have expanded into smart home alarms as well as their tried and tested range of carbon monoxide and smoke detectors. The CO-9D carbon monoxide detector is an advanced system that is sealed for life with a lithium battery and has a helpful digital display. On top of constantly scanning your home for noxious carbon monoxide, this clever system displays useful information as well.

The most useful feature of this alarm is the large digital LCD display. It shows the levels of carbon monoxide in the room down to 10 parts per million, and even reads the current room temperature to within a couple of degrees. And even though this is one of the best carbon monoxide monitors on the market right now, it’s not difficult to operate. In fact, there’s only one button to press. It cycles through the modes and activates the test function.

With decades of experience, and creating more than 50 million safety products, Fireangel are one of the most respected carbon monoxide and smoke detector manufacturers around. Their CO-9B alarm is easy to install because it can be used as a free-standing unit. That means you’re not fiddling around with wall plugs, and you can even take it on holiday with you!

Rated to conform with British Standard EN 50291:2001 and proudly displaying the Kitemark, this is a standard bit of kit for anyone that runs a gas central heating system in their home or place of work.

Supplied with two AA batteries just like the Kidde carbon monoxide detector, you simply pull the battery tab and it gets to work. The electrochemical sensor inside constantly scans for even low amounts of carbon monoxide, to keep you and your family safe.

Home safety experts Scondaor are in the business of making some of the best detector alarms going. Their clever carbon monoxide detector doesn’t just alert you when carbon monoxide levels are dangerously high, it shows you how many parts per million there are on a nice digital display.

Powered by three included AA batteries, this alarm is compact, easy to read, and can be used free-standing or mounted on the wall. It’s an ideal addition to your camping gear or caravan, or wherever you plan to have an open or gas fire.

Mercury started life as a specialist aerial and communications company back in 1973 but have branched out into a diverse range of safety products from money checkers to metal detectors.

I think their COD100B carbon monoxide alarm is one of the best carbon monoxide detectors for the UK market. Even though the working life on this carbon monoxide detector isn’t the longest on my list, it still lasts for an impressive seven years.

The LCD is useful for displaying the carbon monoxide parts per million, and the operation is still nice and simple. The single-button control allows you to reset where necessary.

Producing a range of smart home, home security, and smart energy-saving solutions, Heiman know a thing or two about making one of the best carbon monoxide detectors. It’s an essential piece of home security equipment that monitors the precise levels of carbon monoxide in the air.

You get an LCD screen that displays the carbon monoxide levels in parts per million, and two buttons to cycle through the menu and test the alarm itself. It’s a wall-mounted or free-standing sensor, so you can take it wherever it’s needed.

Although the alarm isn’t quite as loud compared with the Scondaor carbon monoxide alarm, for example, it’s still loud enough to alert anyone close by. It needs three AA-type batteries to work, but unfortunately, they’re not included.

Home safety and security gurus X-Sense have made what I think is one of the best detectors on the market today and for one very good reason. The X-Sense wireless carbon monoxide detector can be connected to up to 24 other sensors to create a wide security network around your home. You probably won’t ever need 24, but it’s nice to know that the smart detector technology is there.

It’s also a rather good-looking piece of kit. This smart detector has a pleasing finish on the front that rings around a bright LCD screen. This screen clearly displays the current levels of carbon monoxide in the room in parts per million (PPM) and the battery level, which is a handy little feature to have as well.

Powered by 3 AA batteries, there’s a visual alert as well as an audio one to let you know exactly which sensor has been activated. All alarms meet British Standard EN 50291:2001, and you can expect this alarm to last for many years without running out of juice.