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Kidde Long Life Carbon Monoxide Alarm 10LLCO review

£18.00 Typical price

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Expert review

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.

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Last checked by Which?

March 2022

First reviewed by Which?

August 2016

Released

January 2016

Test results

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

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Best Buys and Don't Buys
We have tested 24 carbon monoxide detectors and found that there are 10 Don't Buys and 14 Best Buys.
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Full Access first month £2.99, then £9.99 per month, cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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