Which? endorsed boilers

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.”

Why trust Which? 

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.

What Which? had to say about our boilers

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.”

The six Which? ‘Best Buy’ boilers from Viessmann are:

  • Vitodens 050-W 29 kW Combi 
  • Vitodens 100-W 30 kW Combi 
  • Vitodens 100-W 26 kW Open Vent 
  • Vitodens 111-W 35 kW DHW Storage 
  • Vitodens 200-W 30 kW System
  • Vitodens 200-W 60 kW System 
Viessmann Vitodens, Gas Boiler range

Which heating system is the best for you?

Vitodens 050-W gas condensing boiler
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Vitodens 050-W

A compact, low-cost gas condensing boiler

With compact dimensions, low weight and quiet operation, the attractively priced Vitodens 050-W gas condensing boiler will integrate effortlessly into any living space. Which? Best Buy, Vitodens 050-W 29 kW Combi.

  • Up to 7 years
    warranty
  • Easy control with
    LCD Display
  • Smart Home
     with tado°
  • Boiler Plus
    Compatible
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Vitodens 100-W gas condensing boiler
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Vitodens 100-W

Our best selling gas condensing boiler

Efficient, compact, quiet and powerful, the Vitodens 100-W gas condensing boiler is the most popular solution for smaller and well insulated homes. Which? Best Buy, Vitodens 100-W 30 kW Combi.

  • Up to 10 years
    warranty
  • Easy control LCD
    Touchscreen
  • Smart Home
     with tado°
  • Boiler Plus
    Ready
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Vitodens 111-W gas condensing boiler
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Vitodens 111-W

A high performance storage combi boiler for the family home

Rapid, reliable and compact, the Vitodens 111-W is a high performance wall mounted storage boiler for family homes with a high demand for hot water. With its cylinder loading system (CLS) and 46 litre integrated stainless ...

  • Up to 10 years
    warranty
  • Easy control LCD
    Touchscreen
  • Smart Home
     with tado°
  • Integrated
    storage tank
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Vitodens 200-W gas condensing boiler
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Vitodens 200-W

A powerful gas condensing boiler for larger homes

The Vitodens 200-W is a powerful, flexible and easy to maintain wall mounted gas condensing boiler that is perfect for larger detached and semi-detached homes. Available as a system or combi boiler, the highly efficient Vi...

  • Up to 10 years
    warranty
  • Colour
    Touchscreen
  • Quiet
    operation
  • Smart Home 
     with ViCare
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Not sure which product you need? Use our simple tool.

What does Which? say about Viessmann?

  • Fantastically reliable boiler brand
  • Many engineers put Viessmann on a pedestal as the very best on the market

"A quality product, great price, and in my opinion the best warranty offered over all other boiler manufacturers. They’re just the best boiler you could ever fit for your favourite customers." 

(Which? Trusted Traders heating engineer)