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Ariston Ariston CLAS ONE Combi review

£1,700.00 Typical price

Brand score %

Key features
  • Gas
  • Combi

The Ariston CLAS ONE Combi boiler boasts the new Xtratech heat exchanger from Ariston, which Ariston says is more efficient and quieter than its rivals. But how reliable are Ariston boilers and what do expert heating engineers make of them? Read our independent review to find out.

Included in our expert review
  • Pros and cons
  • Heating engineer views
  • What type of home is this boiler suitable for?
  • Will this boiler produce enough hot water for my home?
  • How efficient is this boiler?
  • What controls does this boiler have?
  • Is this boiler smart compatible?
  • What is the warranty with this boiler?
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Brand scores

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we assess boilers
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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.

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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