Vitodens 100-W

Our best selling gas condensing boiler. 

Efficient, compact, quiet and affordable, the Vitodens 100-W hydrogen ready (H2 20% blend)  gas condensing boiler is the most popular solution for smaller and well insulated homes. Featuring innovative technology and services combined with reliability and longevity and comes ready for smart technology, helping you to optimise your heating and save on energy costs. 

  • EfficiencyLabel
  • EfficiencyLabel
  • Up to 12 years
  • Easy control LED
  • Smart Home
     with ViCare
  • Hydrogen
    H2 20% Blend
  • Quiet
  • Products Endorsed by
  • Energy Efficiency
  • Made in
  • Compact design and low weight
  • Quiet operation thanks to low fan speed
  • Available in outputs from 3.2 to 32 kW
  • High quality stainless steel Inox-Radial heat exchanger
  • Up to 94% of the fuel used is converted into heat
  • 5 year guarantee with option to extend by a further 7 years
  • H2 20% blend
  • Class A rated for energy efficiency
  • Low CO2 emissions for reduced environmental impact
  • User friendly LED Touch screen for easy operation
  • Optional ViCare Thermostat means no third-party controls are required
  • Lambda Pro Combustion Control 

Key Benefits

WiFi inside 

  • WiFi interface now included as standard
  • Connects the heating system directly to the internet, if required
  • 3rd party controls not required when using ViCare Thermostat 

ViCare Thermostat

  • Shows information on the current operating status 
  • Provides smart phone control of heating and hot water  
  • Allows the system to be remotely monitored by your local heating engineer

Smart control with ViCare

With our optional easy-to-install ViCare thermostat and smartphone app, you can optimise your heating environment and save energy costs from the palm of your hand - no matter where you happen to be.

ViCare Thermostat

Allows you to easily control your heating and hot water system via the ViCare app.

Touchscreen display

The Vitodens 100-W wall mounted gas condensing boilers can be controlled by the new, LED touchscreen or the ViCare app.

The LED display on the boilers new electronic control panel indicates 7 different pieces of information and is distinguished by its very simple and comprehensible operation and the discreet "black panel" visual design.

Product guarantee

The Vitodens 100-W comes with a 5 year comprehensive guarantee as standard, with the option to extend by a further 7 years.

Compact dimensions

Thanks to modern construction methods, gas condensing wall mounted boilers are extremely space-saving and and can also be installed in small spaces. This makes the Vitodens wall mounted boilers ideally suited for all types of domestic properties.

Reliable and durable - Made in Germany

As a major manufacturer, with many years of experience in the manufacture of wall mounted boilers we know what matters. Even when attractively priced, our standards of product quality and performance are consistently implemented. Therefore Viessmann wall hung boilers are not only renowned for innovative technology and services, but particularly for reliability and longevity.

Suitable for high-rise communal flues

The Vitodens 100-W (M) gas condensing boiler also makes for an ideal replacement for older boiler systems in property modernisation and renovation projects. Using a Viessmann combined flue system (CFS) means numerous boiler flues can be routed up the riser to one roof termination point. The Vitodens 100-W (M) boilers have combined PRV and condensate connections that can also be routed in to the CFS, and one single drain at the base of the system is all that is needed to remove the condensate, without unsightly pipes protruding through the external walls.

Not sure which gas boiler you need? Use our simple tool.

Product Data

Viessman ViCare - Intelligent Heating Control

Making operating your heating easier and more intuitive than ever, our ViCare app allows you to adjust your heating times to suit your requirements using the integral wizard. The app displays cost savings instantly too.

Vitodens 100-W and 111-W product brochure

Weather compensation


Vitodens 100-W

Vitodens 100-W

Output (kW)

Vitodens 100-W

3.2 to 32 kW

Standard seasonal efficiency [SEDBUK 2009/2012]

Vitodens 100-W

98 % (Hs) [gross cv] / 108 % (Hi) [net cv]


Vitodens 100-W

Natural Gas & LPG

Application range

Vitodens 100-W

Residential buildings, commercial enterprises, local authority premises, new builds and modernisation projects


Vitodens 100-W

Large LCD touchscreen display

Additional features

Vitodens 100-W

MatriX Plus burner and Inox-Radial heat exchanger

Energy efficiency class

Vitodens 100-W


Application range

Vitodens 100-W

Detached and two-family house, apartment buildings, new build and modernisation projects

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  • Up to 10 years
  • Hydrogen
    H2 20% Blend
  • Easy control with
    LED Display
  • Smart Home
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