Viessmann


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Viessmann

About Viessmann

Viessmann is our preferred boiler manufacturer for a few reasons.

We’re a Viessmann Premium Partner. As such, we can offer full manufacturer warranties, which other companies may not. Some companies may offer their own warranties, but a full manufacturer warranty is best. And we only offer the best.

We’ve installed 1000s of Viessmann Vitodens boilers over the past few years nationwide. They offer great value for money and super high efficiency over their lifespan.


Viessmann is a German manufacturer of domestic, commercial, and industrial heating equipment. Viessmann’s product range includes gas boilers, oil boilers, air and ground source heat pumps, and a range of PV and thermal solar solutions.

Viessmann is renowned for its use of innovative technology. They develop all of their products with sustainability in mind. This results in Viessmann offering some of the most energy-efficient boilers available in the UK. Their Vitodens 200-W gas and LPG boiler is 98% efficient.

For gas condensing boilers their patented stainless steel heat exchanger ensures great efficiency. And it doesn’t degrade or lose efficiency over time like aluminium heat exchangers. Viessmann boilers are known for their reliability, durability, and energy efficiency.

Viessmann logo

Types of Boilers in the Viessmann Vitodens Range

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

Explore the boiler types and the models within them below.

Viessmann Combi Boilers

  • Power Output: 25kW to 35kW
  • Efficiency: 92% to 98%
  • Warranty: 10-12 Years
  • Models: 050-W, 100-W & 200-W
  • Stainless Steel Heat Exchanger

Viessmann System Boilers

  • Power Output: 11kW to 32kW
  • Efficiency: 92% to 98%
  • Warranty: 10-12 Years
  • Models: 050-W, 100-W & 200-W
  • Stainless Steel Heat Exchanger

Viessmann Heat Only Boilers

  • Power Output: 11kW to 32kW
  • Efficiency: 92%
  • Warranty: 12 Years
  • Model: 100-W
  • Stainless Steel Heat Exchanger

Viessmann Storage Combi Boilers

  • Power Output: 19kW to 32kW
  • Efficiency: 98%
  • Warranty: 10 Years
  • Models: 111-W & 222-F
  • Stainless Steel Heat Exchanger
  • Integrated Hot Water Tank
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Our Best Selling Viessmann Boilers

Below are our best-selling models from the Viessmann Vitodens range.

Viessmann Vitodens 050 W - Viessmann boilers reviews | Boilerhut
  • Efficiency: 92%
  • Warranty: 10 Years
  • Stainless Steel Heat Exchanger
  • WiFi for Fault Monitoring
Viessmann Vitodens 100-W
  • Efficiency: 94%
  • Warranty: 12 Years
  • Stainless Steel Heat Exchanger
  • WiFi for Fault Monitoring
Viessmann Vitodens 100-W
  • Size: 25kW, 32kW
  • Efficiency: 98%
  • Warranty: 10 Years
  • Stainless Steel Heat Exchanger
  • Internal 46-litre Hot Water Tank
Viessmann Vitodens 200-W | Boilerhut
  • Size: 30kW, 35kW
  • Efficiency: 98%
  • Warranty: 10 Years
  • Stainless Steel Heat Exchanger
  • WiFi for Fault Monitoring
Viessmann Logo
Get A Free Boiler Quote Today
  • Save Up To £590 a Year on Bills
  • Compare the Best Prices
  • Save Money on Your New Boiler
Or Call: 02920 099898
  • Size: 32kW
  • Efficiency: 98%
  • Warranty: 10 Years
  • Stainless Steel Heat Exchanger
  • Internal 100-Litre Hot Water Tank

Viessmann boiler costs: prices of Viessmann Vitodens boilers in the UK

Viessmann have three main gas, LPG and 20% hydrogen mix boiler models: the Vitodens 050, the Vitodens 100 and the Vitodens 200.

Vitodens 050 model

The Viessmann Vitodens 050-W boiler is available as a system boiler (in 19kW, 25kW and 32kW) and combi boiler (in 25kW, 30kW and 35kW versions). It has a modulation range of 1:8 and a Class A 92% efficiency rating.

> Combi boiler available from £1,059.84 (boiler only).
> System boiler version available from £1,049.00 (boiler only).

Read the 050 combi boiler review >

Vitodens 100 model

The Viessmann Vitodens 100-W boiler is available as a system, combi and regular/heat-only boilers in 11kW up to 35kW versions. This boiler has an extended 12-year warranty when Boilerhut installs it for you.

> Combi boiler available from £1,425.89 (boiler only).
> System boiler version available from £1,237.39 (boiler only).
> Regular boiler available from £1,108.00 (boiler only).

Read the 100 system boiler review >

The Viessmann Vitodens 111-W storage combi boiler is available in 25kW and 32kW versions. Up to 98% efficient!

> Combi storage boiler available from £2,122 (boiler only).

Read the 111 boiler review >

Vitodens 200 model

The Viessmann 200-W is a combi and system boiler for larger homes. Available from 11kW up to 35kW versions. Up to 10 year warranty and 98% efficient with 1:17 modulation.

> Combi boiler available from £2,178 (boiler only).
> System boiler version available from £1,694 (boiler only).

Read the 200 combi boiler review >

Viessmann 050 vs 100

The main differences between the Vitodens 050-W and the Vitodens 100-W are:

  • Warranty: When installed with Boilerhut, the 050-w comes with a 10-year warranty and the 100-W comes with a 12-year warranty. Out of the box, the 050 has 7 years, and the 100-w has 10 years.
  • Efficiency: The 050-w has an efficiency of 92%. The 100-w is 94% efficient.
  • Modulation: The 050-w has a modulation of 1:8, the 100-w has a modulation of 1:10.
  • Touchscreen: The 100-w has a larger touchscreen.
  • Price: The 050-w is generally slightly cheaper than the 100-w when looking at just the boiler and not full installation.
  • Smart control: The Viessmann Vitotrol 100-E smart thermostat works with the 100-w and not the 050-w. This stat is recommended for the 100-w as it will follow the boiler warranty unlike a third party product.

Frequently asked questions about Viessmann Vitodens boilers

Viessmann offers a comprehensive range of combi, storage combi, system and conventional boilers for domestic use. Their boiler range is available for gas and LPG.

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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