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Kidde Carbon Monoxide Alarm 7CO review

£19.99 Typical price

Test score %

Reviewed

You’ll need to replace the batteries in the Kidde Carbon Monoxide Alarm 7CO every two to three years, but in return it promises a decade of faithful service. Is this carbon monoxide detector a worthwhile investment? We tested its ability to alert you to the presence of carbon monoxide in a series of exacting tests, and assessed the clarity of its alarm and installation instructions. Check our results and expert verdict to discover if this carbon monoxide detector has what it takes to join the ranks of the Best Buy alarms that we recommend.

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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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We have tested 21 carbon monoxide detectors and found that there are 4 Don't Buys and 17 Best Buys.
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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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