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Honeywell XH100 review

£21.00 Typical price

Test resultShow Context

Key features
  • Heat alarm
  • Battery only
  • Heat alarm
Expert review

The Honeywell XH100 heat alarm comes with a sealed battery which will work for the 10-year lifetime of the alarm. This means you won’t have to change the batteries every now and then. It’s designed to be fitted in a kitchen or a garage, places where traditional smoke alarms could be fooled into sounding by smoke from cooking or fumes from vehicles. And it comes with a large re-set button – so large, you can jab it with a broom to turn it off. But how well does this Honeywell alarm detect rapid rises in heat, such as that you’d experience with a cooking fire. To find out, we tested it.

What's included:
  • Pros and cons
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Last checked by Which?

October 2021

First reviewed by Which?

August 2018

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 smoke alarms>

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Best Buys and Don't Buys
We have tested 38 smoke alarms and found that there are 9 Don't Buys and 8 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 38%
    Average score
  3. 93%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to smoke alarms we've tested
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Digital first month only £3.99, then £7.99 p/m, 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.

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