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Boiler brand guides

Viessmann Boiler Guide

By Matthew Knight

Article 17 of 20

We take a close look at how reliable Viessmann boilers are, as revealed by Viessmann owners.

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Viessmann boilers has been in the heating market since 1917. The firm now sells products in more than 11 countries, including the UK.

Viessmann offers gas condensing boilers for any size or type of home. Its range of boilers is called Vitodens and it's available as a combi boiler, system boiler, heat-only boiler and storage combi. A variety of heat outputs and water flows are available for each type making the range suitable for any type or size of home.

You can find more details about the individual products in the Viessmann range in our Viessmann boiler reviews.

More than 8,000 members of the general public take part in our annual boiler brand reliability and customer satisfaction survey, enabling us guide you to the best and worst boiler brands. We also conduct a survey with more than 170 trusted boiler engineers to get their independent views on which boiler brands are the best.

Boiler brand guide
Brand data for Viessmann boilers
Overall score M
Customer score
Engineer recommendation
Build quality
Availability of parts and spares
Ease of fixing a common fault
Ease of servicing
Table notes
The reliability and customer score are based on responses from a May and June 2019 survey of 8,458 boiler owners.
Engineer recommendation, build quality, availability of parts and spares, and ease of fixing a common fault and ease of servicing are based on responses to a June 2019 survey of 171 Which? Trusted Traders heating engineers.


Member Content

How much do Viessmann boilers cost?

Viessmann boilers cost between £740 and £1,500, depending on their type and size.

Choosing the best Viessmann boiler

Viessmann boilers are typically supplied with a two-year parts and labour warranty. 

Viessmann service enquiries

01952 675060

Viessmann repairs and spares

Viessmann's own team of engineers carry spare parts with them.

Viessmann spare parts enquiries

01952 675 013

Viessmann contact details

You can contact Viessmann by letter at:

Viessmann limited

Hortonwood 30

Telford TF1 7YP

or through its website (viessmann.co.uk).

For advice on choosing a new boiler, see our expert guide on how to buy the best boiler.