Kidde Long Life Carbon Monoxide Alarm 10LLCO review
Test score %
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 to find out.
- Pros and cons
Technical specifications
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 detectorsPut 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
- %Lowest score
- 0%Average score
- %Highest score
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.
Suggested alternatives
Related articles
How to choose a carbon monoxide detector
How to choose an effective carbon monoxide detector that you can trust - find out about the different types and how to choose a safe, user-friendly model.
How to install and test carbon monoxide detectors
Ensure your own and your family's safety by installing carbon monoxide alarms correctly. Our Which? experts reveal the right place to fit carbon monoxide alarms to ensure they stand the best chance of detecting killer CO gas.
Carbon monoxide symptoms
The key carbon monoxide symptoms explained. Find out the tell-tale carbon monoxide symptoms and what to do if you think there's a carbon monoxide leak.