Honeywell XC70 review
Test score %
The Honeywell XC70 carbon monoxide alarm comes with a sealed seven-year battery and this means that for the time that you own it, you won't need to change the battery. After seven years, the alarm will let you know it has reached the end of its life and needs to be replaced. But how well does this Honeywell carbon monoxide (CO) alarm detect CO? We tested it back in 2018 to find out. Read on for the full results of our tests.
- 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
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.