Carbon Monoxide Detectors

A carbon monoxide detector will alert you to the presence of CO in the air. Carbon monoxide is colourless, odourless and tasteless, so you can’t tell if you’re breathing it in – that’s why it’s so important to have a reliable CO alarm installed.

Carbon monoxide is produced by a variety of home appliances – anything from gas boilers, cookers and heaters to camping stoves and barbecues. Even starting up a vehicle or lawnmower in your garage can create a build-up of carbon monoxide.

A CO detector should be installed in every room with a fuel-burning appliance, and also on each floor of your house. You can also choose a portable carbon monoxide detector to take on your travels – these small CO alarms are ideal for camper vans, caravans, motorhomes and much more.

Carbon Monoxide Alarms


At Toolstation, we stock CO alarms from tried and trusted brands to keep your home safer. Find your next FireAngel carbon monoxide alarm here, alongside other top choices from Aico, Google Nest and more.

A specialist carbon monoxide alarm will only alert you to the presence of CO – it will not detect smoke or fire, so you should also install a separate heat or smoke alarm system. Some brands also offer a combination smoke and carbon monoxide alarm range too.

Carbon Monoxide Monitors


Unlike detectors or alarms, a carbon monoxide monitor can be used to get a quick reading of CO levels in the air. These monitors can be used to carry out regular checks, and will provide you with digital readings.

CO2 Alarms


A carbon monoxide alarm cannot detect carbon dioxide. If you’re storing, producing or using carbon dioxide, you should install a specialist CO2 detector.

At Toolstation, we stock mains-powered, battery-powered or wireless carbon monoxide alarms. For safe, effective and reliable use, all carbon monoxide detectors should be installed, checked and serviced according to the manufacturer’s instructions.
FireAngel FireAngel / FireAngel 10 Year Carbon Monoxide Alarm - Replaceable Batteries FA3313
( 209 )

£19.49

ex. VAT £16.24 Each

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FireAngel FireAngel / FireAngel 10 Year Carbon Monoxide Alarm - Replaceable Batteries FA3313 Twin Pack
( 114 )

£35.99

ex. VAT £29.99 2 Pack

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FireAngel FireAngel FireAngel / Carbon Monoxide (CO) Alarm with 1 year replaceable batteries 120x73x35.5mm
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( 23 )

£13.99 was £17.99

ex. VAT £11.66

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Google Nest Google Nest / Google Nest Protect Smoke & Carbon Monoxide Alarm Wired S3003LWGB
( 3437 )

£94.99

ex. VAT £79.16 Each

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Google Nest Google Nest / Google Nest Protect Smoke & Carbon Monoxide Alarm Battery S3000BWGB
( 3437 )

£94.99

ex. VAT £79.16 Each

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FireAngel FireAngel / FireAngel Combination Optical Smoke and Carbon Monoxide Alarm SCB10
( 60 )

£38.99

ex. VAT £32.49 Each

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FireAngel FireAngel FireAngel / Carbon Monoxide (CO) Alarm with 1 year replaceable batteries 120x73x35.5mm
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( 2 )

£26.99 was £34.99

ex. VAT £22.49 2pk

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FireAngel FireAngel / FireAngel 10 Year Carbon Monoxide Alarm - Sealed for Life Battery FA3820
( 101 )

£27.99

ex. VAT £23.32 Each

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Aico Aico / Aico Ei208 Carbon Monoxide Alarm Lithium Battery
( 47 )

£21.99

ex. VAT £18.32 Each

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FireAngel FireAngel / FireAngel 10 Year Digital Carbon Monoxide Alarm - Sealed For Life Battery FA3322
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( 38 )

£30.99 was £44.99

ex. VAT £25.82 Each

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FireAngel FireAngel / FireAngel 10 Year Carbon Monoxide Alarm - Sealed for Life Battery FA3820 Twin Pack
( 24 )

£53.89

ex. VAT £44.91 2 Pack

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Aico Aico / AICO Ei3018 Carbon Monoxide Alarm
( 1 )

£62.99

ex. VAT £52.49 Each

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FireAngel FireAngel / FireAngel Pro Connected Wireless Interlink CO Alarm Battery Powered
15% Off
( 3 )

£54.99 was £64.99

ex. VAT £45.82 Each

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