Best Carbon Monoxide Detectors in the UK

Honeywell is one of the main manufacturers of detector devices and surely knows a thing or two about how to make high-quality products. But putting the company’s history aside, let’s take a quick glance at what we have at hand.

The Honeywell XC100 is a small, lightweight alarm that features multiple high-sensitivity carbon monoxide detectors. However, their sensitivity is not the only thing that makes this model worthy of your attention.

Since the battery is sealed, there is no way to replace it once the original one runs out of charge. However, considering the total service lifespan of a single battery that nearly reaches 10 years straight, it doesn’t seem like that huge of an issue.

Unlike older Honeywell detector models, the XC100 shows alarm messages if the high concentration of carbon monoxide has been detected.

As far as the installation is concerned, the device can be mounted on the wall or ceiling, thanks to the special screw holes located on the back of the detector.

For your convenience, the package includes all required mounting hardware so you don’t need to purchase additional screws. Alternatively, if you don’t want to bother with drilling the holes, the unit can be utilised as a free-standing model and can be put on any flat surface.

Wrapping things up, if you are looking for a reliable CO alarm, this model from Honeywell is by far one of the best carbon monoxide detector models in the budget-friendly price range available on the market today.

The Kidde 10SCO is effective and reliable.

On top of the regular visual indicators, the unit features an audible alarm system that will notify you and others in your house about potential threats. And with a beeping sound that reaches the noise level of 85 dB, the 10SCO certainly can be called a rather loud alarm system. So, you will definitely hear the alarm going off even if you are 20-30 metres away from the unit.

That said, it is important to properly install the unit according to the user manual to avoid false alarms that can occur fairly often when the appliance is mounted too close or adjacent to potential smoke or carbon monoxide sources.

The 30 ppm sensitivity of the detector makes it quite reliable in terms of critical response time. As for the concentration of the gas and their respective audio cues, the appliance will go off at 50 ppm, 100 ppm, and 300 pm, with alarm response times of 60-90, 10-40, and 3 minutes respectively.

Like other similar devices, the Kidde 10SCO features a Hush button that allows you to turn off the alarm when it has gone off accidentally. This will be helpful in case you plan on installing the smoke detector in your kitchen since, more often than not, some smoke occurs if you cook on a regular basis.

All in all, the Kidde 10SCO will be a good pick for users looking for a universal smoke and carbon monoxide detector. Fairly well-built, it will prove to be a real lifesaver in what concerns detecting harmful CO buildups in your kitchen or other places in your house.

Although carbon monoxide is not toxic, its reaction with haemoglobin surely is. Hence, if you have a gas stove, oven, electric dryers, boilers, or other potential smoke and carbon sources in your house, having a good gas detector is a must.

Fortunately, the Kidde 7COC covers all British gas requirements for household CO detectors while not being overpriced at the same time. The device doesn’t have too many buttons, which makes it fairly user-friendly.

If the minimalistic design of this particular model doesn’t fancy you, the 7COC is optionally available with an additional digital display.

As for more quality-of-life improvements, the device features an additional end-of-life battery sensor that will notify you when the battery is running low on charge. That said, the included 9V battery isn’t exactly a long-lasting one, so if you need one that will last you for at least a year, we recommend purchasing one separately.

On the bright side, however, once the unit is properly mounted and turned on, it will detect any abrupt spikes of CO concentration in the air and notify you about them with a loud (85 dB) alarm noise. What makes it great, though, is that once you turn the sensor on, it doesn’t need further adjustments from your end.

Reliable and affordable are, perhaps, the main aspects that make 7COC a must-have pick in case you are looking for a budget-friendly carbon monoxide detector.

When it comes to picking CO detectors, the best devices are the ones that work no matter what. So, if you want to purchase a CO sensor that can operate for several years without the need to replace the batteries, the Fireangel CO-9D is exactly the model you need.

The CO-9D is capable of distinguishing even the least harmful doses of carbon monoxide in your house, which is no small feat for a household CO detector. Furthermore, the built-in memory unit will come in handy if you need to determine the main sources of carbon monoxide in your house as it allows you to see at which times the gas concentration is the highest.

Apart from that, the memory function allows recording the data gathered from CO sensors for up to 4 weeks straight, enabling you to see how the situation changes throughout the whole month.

Moving on, the device also features a digital thermometer that will conveniently show the current temperature inside the room. Likewise, the appliance is small and highly portable, which allows utilising it in multiple rooms. Since CO is lighter than CO², this feature will prove to be quite useful in terms of determining potential gas leaks.

In the end, the CO-9D proved to be a highly sophisticated carbon monoxide alarm system for use in both residential and commercial areas that can also act as a portable detector.

Mercury 350.135 CO detector is a seemingly simple device that hides more than your regular gas alarm underneath its plastic housing.

First things first, the appliance features a high-contrast digital display that can show the CO concentration in the air, battery charge, as well as the current temperature in the room. Additionally, according to British gas regulations, the alarm will go off in just 3 to 10 minutes after detecting dangerously high concentrations of carbon monoxide in the air.

While carbon monoxide is odourless and obviously invisible, the Mercury 350.135 will not put you or your family members in danger by warning you about the harmful CO levels in no time with its loud alarm system.

While the alarm system is certainly loud, the three LED lights located on the front panel will give you more information about the type of danger. The main green light indicates that the power is on, while the yellow and red ones are meant to indicate false and real alarms respectively. Thus, if the device glows red, you will know it is time to leave the premises immediately.

Designed for household use, this wall-mounted device will be an excellent pick for the role of a primary CO detector in your house. For added convenience, the kit is supplied with all required mounting hardware so you won’t have to worry about installation too much.