Viessmann UK announced on 1 February 2023 that the standard warranty on its entire Vitodens residential boiler range is extended to seven years1. The change applies to all Vitodens boilers up to 35 kW output, and customers may select to purchase an even longer warranty period of 10 or 12 years1.
Vitodens is Viessmann's family of gas-condensing boilers, available as 050-W, 100-W, 111-W and 200-W wall-hung models and as a 222-F floor standing model1. The company said the standard seven-year warranty marks an increase in cover across all models, and as much as four years in some cases1. It sits alongside a 10 year guarantee on the Inox-Radial stainless steel heat exchanger fitted in all Vitodens boilers1. Other listed features include a MatriX-Plus burner with Lambda Pro combustion controller, an integral variable speed high efficiency circulation pump, an LCD screen display with touch buttons, and a variable speed fan1. Viessmann states that Vitodens combi boilers are a Which? Best Buy1.
Chris Johnson, UK Director of Sales at Viessmann, said:
"We're really pleased to be able to bring this level of product security to our valued customers in the UK. As a company that's committed to producing quality products that are built to last, we're extremely proud of the performance and reliability of our Vitodens range. This warranty promise reflects the confidence we have in our products and it is in addition to the 10 year guarantee on the Inox-Radial stainless steel heat exchanger in all our Vitodens boilers. It makes Viessmann boilers a wise choice for consumers and will hopefully be welcomed by our loyal installers. The standard seven-year warranty marks an increase in cover across all models, and as much as four years in some cases."
The announcement gives no start date for the extended terms beyond the publication date, and does not state whether boilers already installed are covered. It also does not set out the price of the 10 or 12 year options, or the conditions attached to them. Those details have not been reported1.
| Item | Cover stated |
|---|---|
| Standard warranty, all Vitodens up to 35 kW | 7 years |
| Optional purchased warranty | 10 or 12 years |
| Inox-Radial stainless steel heat exchanger | 10 years |
Why it matters for households
A boiler warranty sets how long the maker will cover certain repair or replacement costs after installation, so its length feeds directly into the risk a household carries on its heating. Extending standard cover across a whole range, rather than on selected models, changes the comparison a householder or their adviser makes between one Viessmann boiler and another, and between Viessmann and other makers. The terms of boiler warranties and guarantee registration matter as much as the headline years: what is covered, what servicing is required to keep cover valid, and whether the warranty transfers if the home is sold. None of those conditions are set out in the announcement1.
For a home's energy independence, warranty length is a secondary factor next to how much gas a boiler uses and how well the system is set up. Viessmann points to modulating flow temperatures and lower output models as steps households can take, and says efficient boilers are being highlighted as a means of reducing emissions and helping households become more energy efficient1. Longer cover on the Vitodens 100-W and the rest of the range may also affect how households weigh a gas boiler against alternatives such as a Zero Emission Boiler, where the warranty position differs. How the seven-year standard compares with cover from other manufacturers is set out in our guide to manufacturer warranties on home energy equipment.
What happens next
Viessmann directs installers to its installer portal to register a Vitodens boiler for warranty1. No further dates or changes to the terms have been announced1.
Sources1 cited
- Increased warranty for residential boilers | Viessmann UK, viessmann.co.uk