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FireAngel CO-9D review

£18.00 Typical price

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Expert review

The FireAngel CO-9D Carbon Monoxide Alarm has a sealed battery, which means you’ll never have to buy replacements during its seven-year lifetime. It sounds like a convenient buy, but does it deliver where it really matters? To find out if you can trust this 2016 carbon monoxide detector when you need it most , we tested its reactions to different levels of carbon monoxide in a series of stringent safety tests.

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  • Pros and cons
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Last checked by Which?

January 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.

Find out how we test carbon monoxide detectors>
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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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