Viessmann Vitodens 050-W Gas/LPG Boiler | Boilerhut

Viessmann Vitodens 100-W 26kW Combi Boiler B1KF

Price: £1,427    each, inc. VAT | Ex. installation | 3-10 year boiler finance available.

The Viessmann Vitodens 100-W 26kW is a wall-mounted gas and LPG condensing combi boiler. It combines efficiency, durability, and user-friendly operation. This low-emission boiler will last you for 12 years minimum, and ensure you’re warm every step of the way.

The Vitodens 100-W range is our top pick for the best combi boiler in 2024. Viessmann boilers are the best available today.

  • Heat output: 3.2 – 19kW
  • Stainless Steel Heat Exchanger
  • 20% Hydrogen-mix Ready
(Boiler-only price: comparing five or more suppliers, including Screwfix and Plumbase. Correct April 2024).

The Vitodens 100-W 26kW is known for its exceptional quality and reliability. This gas-condensing boiler is a popular choice among homeowners seeking a balance of performance and energy saving.

Engineered with precision by Viessmann, the Vitodens 100-W 26kW is designed to integrate into any home. It’s compact and quiet, making it perfect for any open area of the home. It is the most popular boiler we install, and was awarded Which? Best Buy three years in a row.

  • Compact unit that can fit inside a kitchen cupboard
  • Super quiet operation
  • Up to 12-year warranty
  • Hydrogen mix ready (20%)
  • Integrated WiFi for Viessmann and Boilerhut monitoring

Key Features

  • 94% / A rated efficiency
  • Stainless steel heat exchanger making it highly efficient and durable
  • Ultra-compact dimensions – 700mm in height, 400mm wide and 360mm deep.
  • Built-in WiFi for connection for Boilerhut monitoring

    Viessmann Primary Heat Exchanger - Boilerhut

    Viessmann’s radial stainless steel heat exchanger.


  • 94% / A rated efficiency
  • Stainless steel heat exchanger, making it highly efficient and durable
  • MatriX-Plus burner and Lambda Pro combustion control system for high efficiency and low emissions
  • Modulation rage of 1:10

    MatriX-Pro burner - Viessmann Vitodens 050-W 25kW combi boiler

    MatriX-Pro burner and combustion chamber.

Size and Installation

  • 27.3kW Gas & LPG condensing boiler (no LPG conversion kit required)
  • Also available in 30kW and 35kW combi boiler versions
  • Compact dimensions – 700mm high, 400mm wide and 360mm deep
  • Ideal for installation in a cupboard
  • Super quiet operation means it doesn’t need to be in a cupboard
  • Integrated pressure value, reducing pipework
  • 8-litre expansion vessel


  • Touchscreen display for easy operation
  • User-friendly control
  • Viessmann ViCare app compatible
  • Smart thermostat compatible such as Tado and controlled via a smartphone
  • Built-in WiFi for connection for Boilerhut and Viessmann monitoring

    Viessmann Vitodens 100-W 30kW Touchscreen

    Touchscreen on the Vitodens 100-W range.

Environmentally Friendly

  • Low CO2 emissions for reduced environmental impact
  • 20% hydrogen blend ready
  • 1:10 modulation enables running at reduced power output

The Viessmann Vitodens 100-W range also includes system and heat-only boilers.

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