Which? Best Buy 2018

Viessmann is proud to have secured a Which? Best Buy status for its six most popular Vitodens gas boilers for the second year in succession. The annual survey by Which? – the UK’s largest consumer organisation – conducts robust research in order to “reveal the boiler brands you can trust.”

An independent charity, Which? was established over 60 years ago and is renowned for its genuine & unbiased reviews. It is now the UK's largest independent consumer body with more than 1.3m members and supporters. Which? work entirely on behalf of the consumer, and nobody else – so you can be assured that an endorsement from Which? means that you're getting the very best advice available from a totally impartial organisation. At the heart of the Which? philosophy is ensuring products put consumers' needs first, to bring them better value.

In the overall brand assessment – based on reliability, customers’ scores, and the expert views of engineers – Viessmann boilers scored second place in the table. Which? reports that the survey again resulted in “a huge difference in overall score between the best boiler brands and the worst.”

Which? conducted the survey in May 2018, questioning just under 12,000 boiler owners and 166 heating engineers who are registered Trusted Traders. The report praised Viessmann’s boilers, saying that they “have excellent build quality, are easy to repair and even non-incentivised heating engineers would recommend them.”