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Viesmann Boiler Warranty


A quick guide to Viessmann Warranties.


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Viesmann Boiler Warranty

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Viessmann Boiler Warranty

Boilerhut are a Viessmann Premium Partner and as such we are able to offer a 10 year warranty on new boilers in the 050-W and 200-W range and 12 year warranty on the 100-W model. Quick breakdown:

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Viessmann Boiler Warranty – More Information

We’ll quickly start at the beginning, a warranty is a contract to protect and reassure the customer that a product will last a certain amount of time. There will obviously be terms, conditions and exclusions on the warranty. With boilers, one condition will be regular maintenance of the boiler.

Out-of-the-box Viessmann boilers come with a 7-year warranty, but as we’re a Premium Partner we can offer an extended warranty. This is because our engineers have had specific Viessmann training that ensures proper installation.

You will not have to register the product yourself to get the full warranty, Boilerhut will register any boiler we install for you.

Ensuring Your Warranty

In order to ensure your warranty for the full term you should follow good industry practice and get your boiler serviced every year by a Gas Safe engineer who follows the Viessmann service rules to the letter.

At Boilerhut we offer annual servicing through Viessmann themselves. You can organise an annual service, or sign up to an annual plan and every year we can arrange for an official Viessmann engineer to come out to service your boiler.

We believe this is the best option for our boiler installations because if Boilerhut and Viessmann are looking after it annually they will find it hard to deny any warranty claims.

Viessmann Warranty Exclusions

Like all warranties the Viessmann warranty has exclusions, some of these are:

  • Accidental damage
  • Fire, theft, attempted theft and malicious damage
  • Natural disasters
  • Non-Viessmann modifications
  • Wear and tear
  • Maintenance replacements like filters, fuses and batteries
  • Aesthetic dents, scratches or paintwork damage

Need Help?

If you have already had a boiler installed with Boilerhut and need some help, please call our customer service number on 029 2009 8087.

If you need a new boiler, a replacement boiler, or a change or upgrade please get an online quote and we’ll call you back to discuss the details in more detail. If you would prefer to call us to discuss a new boiler, please call us on 029 2009 9898.

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Frequently asked questions about Viessmann

Viessmann offers a comprehensive range of combi boilers, storage combi boilers, system boilers and conventional boilers for domestic use. Viessmann’s domestic boiler range is available in gas and oil fuel types.

We are often asked by customers just how good Viessmann boilers are, our answer to this is that they are excellent.

Viessmann offers the most technologically advanced and efficient boilers currently available on the UK market. Our opinion of Viessmann boilers is based on the technology employed across the range, the efficiency of its boilers, the flow rates offered by Viessmann combi boilers, and the company’s usage of components that are all manufactured in-house at its Allendorf production facility.

Key to the excellent quality of Viessmann boilers is the usage of its patented Inox-Radial stainless steel heat exchanger. Constructed from the highest grade of stainless steel, Viessmann’s heat exchangers are highly resistant to corrosion, don’t require special fluids as aluminium heat exchangers do, and are designed to retain the boiler’s efficiency for the lifetime of the appliance.

Our opinion of Viessmann is backed up by Which?, with the consumer organisation awarding the Vitodens domestic boiler range Which? Best Buy status every year since 2017. To determine Best Buy status, Which? surveys over 8,458 consumers about the boiler brand they own and whether they would recommend it to a friend. Which? also surveys over 170 registered Trusted Traders heating engineers on their thoughts about the boiler brands they work with and their thoughts about installation, services, fault fixing, and the availability of parts and spares.

Upon being awarded Best Buy status for the first time in 2017, Which? said the following about Viessmann, “Viessmann has been on the cusp of being a Best Buy boiler brand for the past few years, and 2017 sees it deservedly crack it. Its reliability score is the best of any brand” and “Two-thirds of owners would definitely recommend their Viessmann boiler to a friend. Engineers are positive about Viessmann too.”

Viessmann has now been awarded Which? Best Buy status multiple times and was described as a “very smart choice” by the consumer organisation in its latest survey.

Both our opinion and the opinion of Which? is reflected by Viessmann UK being rated excellent by Trustpilot, with a TrustScore of 4.6 on the review platform.

Viessmann has 22 production facilities in 12 countries across the world. However, all of the Viessmann boilers available in the UK are manufactured at Viessmann’s global head offices and production facilities in Allendorf (Eder) in Hesse, Germany.

Yes, Viessmann’s UK office has been based in Telford, Shropshire since 1989. From this office, Viessmann coordinate the training of approximately 2,500 installers, contractors, specifiers and architects on its products each year across the UK.

Yes, all Viessmann spare parts are stocked at Plumbase and several other plumbing merchant locations around the UK.

Viessmann was established in 1917 in Hof an der Saale, Germany by Johann Viessmann. A family-owned company for four generations, Viessmann is today led by Martin Viessmann, Maximillian Viessmann and Joachim Janssen.

With 23 production facilities, representative offices in 74 countries, and 120 sales offices across the world, Viessmann employs over 12,300 people globally.

The Viessmann boiler that is right for you is dependent on several factors. These include the following:

  • The size of your property
  • The hot water demands of your household
  • Your current boiler system
  • Whether your home is connected to the mains gas network 

To illustrate the most suitable boiler for your needs, we have detailed a number of typical scenarios and the most suitable boiler for these below:

One bedroom flat with one bathroom and an existing combi boiler 
Suggested boiler: Viessmann Vitodens 050-W 29kW
Three bedroom semi-detached house with one bathroom, eight radiators, and an existing combi boiler
Suggested boiler: Viessmann Vitodens 100-W 30kW combi boiler
Three bedroom terrace house with two bathrooms, ten radiators, and an existing combi boiler 
Suggested boiler: Viessmann Vitodens 100-W 32kW combi boiler
Three bedroom semi-detached house with three bathrooms, 12 radiators, and an existing system boiler
Suggested boiler: Viessmann Vitodens 111-W 32kW storage combi boiler
Three bedroom detached house with two bathrooms, 13 radiators and an existing system boiler
Suggested boiler: Viessmann Vitodens 100-W 25kW system boiler
Four bedroom detached house with two bathrooms, 15 radiators and an existing system boiler
Suggested boiler: Viessmann Vitodens 100-W 30kW system boiler

We think so, yes.

Worcester Bosch are a fantastic brand, and we do sometimes install their boilers into people’s homes if they really want one, or a particular model is a better fit for their needs. However, we find that in most cases a Viessmann model would do the job more efficiently for a longer period of time due to the stainless steel heat exchanger.

  • Viessmann boilers are just built to last with patented parts and premium materials rather than composites.
  • Viessmann are a Which! Best Buy, like Worcester Bosch.
  • Full industry-leading 10-12 year warranty.
  • Parts are fully available in the UK through Plumbase and other merchants.

As a Premium Partner of Viessmann, Boilerhut is able to offer the full 12 year warranty on the Vitodens 100-W range and 10 years on the 050 and 200 ranges.

We think so, yes. Both brands offer A-rated boilers but Viessmann are the more premium brand.

  • Viessmann are an industry-leading company when it comes to energy efficiency with their 200-range being 98% efficient.
  • Boilerhut and Viessmann offer up to 12 year warranties on the 100-W range and up to 10 years on their 050 and 200 ranges.
  • Viessmann boilers use a patented and superior stainless steel heat exchanger which increases reliability and efficiency over 10-12 years.
  • Most models are about the same size, if not smaller than Vaillant boilers.
  • All that, and in general, Viessmann are cheaper or the same price for similar capacity and power models.

It all depends on the model, capacity and power of the boiler. Models start at around £1,300 and can go up to £4,000 for the top of the range storage combi boilers (read about storage combi boilers here >).

Gas & LPG Combi Boilers – A popular choice in many homes, combi boilers provide both heating and hot water from one unit without the need for a separate water tank. Viessmann’s combi boilers are known for their compact size, efficiency, and convenience.

System Boilers – These boilers work with a separate cylinder for storing hot water. They are suitable for homes with higher hot water demand. Viessmann’s system boilers are known for their reliability and efficiency.

Regular/Conventional Boilers – Also known as traditional or heat-only boilers, these are typically used in older heating systems and are ideal for homes that already have a traditional heating and hot water system linked to a separate hot water cylinder.

Air Source Heat Pump – Air source heat pumps serve as a great alternative to conventional gas or oil heating systems, as they enable you to generate heat with electricity and could help you to reduce both your energy bills and your carbon footprint.

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