We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Coronavirus Read our latest advice

FireAngel CO-9D review

£18.00 Typical price

Test resultShow Context

Reviewed

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.

Included in our expert review
  • Pros and cons
First month only £5, then £9.99 per month, cancel any time

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>

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.

Make smarter choices

We have tested 26 carbon monoxide detectors and found that there are 10 Don't Buys and 16 Best Buys.
First month only £5, then £9.99 per month, cancel 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.

    CompareRemove all products