Family at home

Providing hot water on demand to multiple taps and showers

If you have more than one bathroom in your home or you have a high demand for hot water, our range of gas system boilers could be the ideal choice for your property. System boilers are able to provide high pressure hot water on demand to multiple taps or showers at the same time with an almost instant response.

How do system boilers work?

System boilers provide hot water directly to your central heating system and they produce hot water for a sealed storage cylinder within your home. Like a conventional boiler, they store hot water. However, unlike a conventional boiler, they take their water directly from the mains rather than from a tank in the loft. This means they take up less space.

All heating and hot water components in our system boilers are contained within one compact arrangement. The only external part of the system is the cylinder that stores the hot water. This makes the systems tidier and it also means that installation and servicing is easier and more efficient.

Because they feature a storage tank, system boilers give you a greater hot water capacity than combi boilers. They allow you to use multiple taps or showers at the same time without experiencing a reduction in pressure. This means the appliances are ideal for large or busy households with more than one bathroom. Another feature of system boilers is that they provide water at higher pressure than conventional boilers.

System boilers are extremely efficient to run as well, and they are compatible with solar water heating systems. 

Our range of system boilers

When you choose a Viessmann system boiler, you can be sure you’re benefiting from the very best in engineering and design. Our comprehensive range of models is built around our long-established reputation for creating high quality heating systems.

Utilising the latest heating technology, the Viessmann system boiler range defines the quality benchmark for other brands. With all of our boilers, we are focused on using energy efficiently, cutting costs, saving natural resources and protecting the environment. Each of our system boilers is rated class A for energy efficiency, and they are compatible with Viessmann solar thermal systems and other low carbon and renewable technologies. This gives you the opportunity to further lower your bills and reduce your carbon footprint.

Take your pick from models including our Vitodens 100-W, which is popular for smaller homes, and our Vitodens 200-W, which is designed for use in larger detached and semi-detached properties. Whichever model you go for, you’ll benefit from features such as a user-friendly touchscreen display and an optional tado° thermostat and smartphone app which allows you to control your heating system with ease no matter where you are.

All of our boilers are built to last and they come with features such as corrosion-resistant stainless steel Inox-Radial heat exchangers.

Benefits of a Viessmann system boiler

  • Ideal for delivering hot water to more than one bathroom in a property
  • Hot water is constantly supplied to any number of taps, baths or showers simultaneously
  • Space-saving, as there is no need for a feed or expansion cistern
  • Compatible with Viessmann solar thermal systems and other renewables and low carbon technologies
  • Comprehensive warranty on the entire range, as standard 
  • Installed together with a Vitocell 200 or 300 unvented cylinder they are the perfect combination to meet G3 building regulation (heating and hot water)
  • Reduced costs of extra components needed on 2-pipe system boilers
  • Reduced running costs from weather compensation in heating mode 
Viessmann Vitodens, Gas Boiler range

Which gas boiler is the best for you?

Our most popular System boilers

Vitodens 100-W gas condensing boiler
Vitodens 100-W
Our best selling gas condensing boiler

With compact dimensions, low weight and quiet operation, the attractively priced Vitodens 050-W gas condensing boiler will integrate effortlessly into any living space. Which? Best Buy, Vitodens 050-W 29 kW Combi.

Discover the Vitodens 100-W
  • Up to 10 years
    warranty
  • Easy control LCD
    Touchscreen
  • Smart Home
     with tado°
  • Boiler Plus
    Ready
Discover the Vitodens 100-W
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  • EfficiencyLabel
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