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Vaillant ecoFIT sustain combi review

£1,560.00 Typical price

Brand score %

Key features
  • Gas
  • Combi

The ecoFIT Sustain combi boiler is designed with new build and social housing in mind. It’s designed for relatively small homes and Vaillant says it’s very quiet in operation. To find out how reliable Vaillant boilers are compared to its competitors, and how well loved it is by its own customers and expert heating engineers, read our full review.

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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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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