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KiddeLong Life Carbon Monoxide Alarm 10LLCO

Name: Kidde Long Life Carbon Monoxide Alarm 10LLCO
Brand: Kidde
SKU: Long_Life_Carbon_Monoxide_Alarm_10LLCOh_1806

£20View retailers

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The clue is in the name of the Kidde Long Life Carbon Monoxide Alarm 10LLCO – it should last up to 10 years before you’ll need to replace it. Along the way you won’t even need to replace the batteries, which are safely sealed inside the unit. But does it pair this long life with the ability to detect even small concentrations of carbon monoxide in the air? We put the Kidde carbon monoxide detector through a series of gas detection tests back in 2016 to find out. Read on for the results of our tests.

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Nov 2023Last checked by Which?
Aug 2016First reviewed by Which?
Jan 2016Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test carbon monoxide detectors

27 Feb 2024

Carbon monoxide (CO) detection

How we test carbon monoxide (co) detection

Five stars means that the CO alarm detected CO in every one of our tests. One star means that the alarm failed to detect CO in one or more of our CO detection tests. We test each carbon monoxide (CO) alarm more than 30 times to see whether it can detect the deadly gas. We test with low concentrations of CO and higher concentrations. We also test with a catastrophically high concentration of the gas. We check whether the alarms respond in time and whether after detecting CO, they can go on to continue to detect the gas.

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