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Convenient heat generation with natural gas

Our A rated condensing boilers offer a highly efficient and reliable heating and hot water solution for your home or business. We offer technologies for convenient heat generation with natural gas that meet a wide variety of requirements. Whether you need a high efficiency condensing boiler for a new building or a modernisation project, we can help. At Viessmann, we provide appliances suitable for use in apartments, single-family homes or major projects in the housing industry. This includes compact, wall mounted models gas condensing boilers that can be installed in almost any room.

If a solar heating system is to be connected to provide domestic hot water, we recommend gas condensing boilers with integrated solar heat exchangers. These floorstanding gas condensing boilers are state-of-the-art and cover an output range from 2 to 100 kW. This enables them to supply heat efficiently and reliably to detached, semi-detached and small apartment buildings at any time.

Condensing boilers with gas are also available in larger outputs. They are mainly used in buildings with a high heat demand. These are usually apartment blocks, as well as public and commercial buildings. Thanks to the cascade function, several devices can be quickly connected to form a single unit and reliably provide heat in this application as well.

Gas condensing boilers are more efficient than older non-condensing designs. Equipped with condensing technology, they utilise not only the heat generated by combustion, but also the water vapour content. They transfer this additional heat energy back into the heating system, meaning that more of the money you spend on fuel is converted into heating and hot water for your home or business. Our gas condensing boilers are at least 98 per cent efficient, helping to save you money and cut your carbon footprint.

Viessmann Vitodens, Gas Boiler range

Which gas boiler is the best for you?

Gas condensing boiler product line-up

Vitodens 050-W gas condensing boiler
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Vitodens 050-W

A compact, low-cost gas condensing boiler

Compact, lightweight and quiet, the Vitodens 050-W can integrate seamlessly into any living space. It is also affordable without compromising on quality.

  • Up to 7 years
    warranty
  • Easy control with
    LCD Display
  • Smart Home
     with tado°
  • Boiler Plus
    Compatible
Discover the Vitodens 050-W
Vitodens 100-W gas condensing boiler
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Vitodens 100-W

Our best selling gas condensing boiler

The Vitodens 100-W gas condensing boiler is the most popular solution for well-insulated, smaller homes. Highly efficient, compact, quiet and affordable, it combines reliability with innovative technology and services.

  • Up to 10 years
    warranty
  • Easy control LCD
    Touchscreen
  • Smart Home
     with tado°
  • Boiler Plus
    Ready
Discover the Vitodens 100-W
Vitodens 200-W gas condensing boiler
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Vitodens 200-W

A powerful gas condensing boiler for larger homes

Flexible, powerful and easy to maintain, the wall mounted gas condensing Vitodens 200-W is ideal for larger detached and semi-detached homes. Choose from system or combi models.

  • Up to 10 years
    warranty
  • Colour
    Touchscreen
  • Quiet
    operation
  • Smart Home 
     with ViCare
Discover the Vitodens 200-W
Vitodens 111-W gas condensing boiler
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Vitodens 111-W

A high performance storage combi boiler for the family home

Compact, rapid and reliable, the Vitodens 111-W is a high performance, wall mounted storage boiler ideal for family homes with a high demand for hot water.

  • Up to 10 years
    warranty
  • Easy control LCD
    Touchscreen
  • Smart Home
     with tado°
  • Integrated
    storage tank
Discover the Vitodens 111-W
Vitodens 100-W Open Vent
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Vitodens 100-W Open Vent

A compact and efficient open vent gas boiler

Perfect for applications where space is limited, this wall mounted, open vent gas fired condensing boiler is compact enough to fit in a typical kitchen cupboard.

  • Designed for
    Residential
  • Powered by
    Gas
  • Up to
    35 kW
  • Energy efficiency
    A
Discover the Vitodens 100-W Open Vent
Vitodens 222-F
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Vitodens 222-F

Floorstanding convenience with loading cylinder

A visually attractive heating centre that conveniently fits inside a standard kitchen unit, this gas condensing storage combi boiler has a rated heating output of 1.8 to 35 kW.

  • Designed for
    Domestic
  • Powered by
    Gas
  • Energy efficiency
    A
  • Up to
    35 kW
Discover the Vitodens 222-F
Vitodens 242-F
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Vitodens 242-F

Futureproof through solar integration

Offering cutting edge, futureproof heating with condensing and solar technology, this gas condensing storage combi boiler is prepared for the direction connection of Vitosol solar collectors.

  • Ideal for
    Domestic
  • Powered by
    Gas
  • Up to
    26 kW
  • Energy efficiency
    A
Discover the Vitodens 242-F
Vitocrossal 100

Vitocrossal 100

Advanced gas condensing boiler

Available with an output range of 80 - 318 kW, or 636 kW as a twin unit, this award winning economical boiler is suited to a variety of applications.

  • Suitable for large 
    Residential
  • Suitable for
    Commercial
  • Powered by
    Gas
  • Up to
    318 kW
Discover the Vitocrossal 100
Vitocrossal 200

Vitocrossal 200

High performance at the right price

Designed for new build and modernisation projects, this gas condensing boiler has a rated heating output of 87 to 311 kW. Efficient and reliable, it is ideal for large residential buildings and commercial operations.

  • Large
    Residential
  • Large
    Commercial
  • Powered by
    Gas
  • Up to
    311 kW
Discover the Vitocrossal 200
Vitocrossal 300

Vitocrossal 300

Our most powerful gas condensing boiler

With an output range of 87 to 1400 kW, the Vitocrossal 300 is designed for flexible use in the medium output range. It is a highly efficient option in apartment blocks, as well as public and commercial buildings.

  • Large
    Residential
  • Large
    Commercial
  • Powered by
    Gas
  • Up to
    1400 kW
Discover the Vitocrossal 300

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

Using future-proof heating technology today

The demands for resource-saving heating technologies are becoming ever more pressing. New gas condensing boilers should not only work cleanly, but also sustainably. In response to this, Viessmann has already invested in the future of its gas condensing boilers. Thanks to combustion control, our gas condensing boilers automatically adjust to different types of gas - including biogas admixture. Therefore, these heating systems sustainably meet the requirements for resource-saving heating technologies.

Gas condensing boiler technology

Our range of gas condensing boilers 

Viessmann gas condensing boilers feature a high performance stainless steel Inox-Radial heat exchanger which is central to their impressive performance. This heat exchanger cools flue gases before they escape up the chimney. This process releases extra heat, which is transferred into the heating system. Thanks to this condensing technology, our gas condensing boilers are rated energy efficiency class A and they achieve efficiency of up to 98 per cent. This means they can help you to look after both your finances and the environment.

Protecting the climate and the environment - for example with a gas condensing boiler

Condensing technology is noted for its highly efficient energy utilisation. While conventional heating systems simply let some of the energy contained in the fuel escape unused, gas condensing boilers convert the energy content of a fuel almost completely into heat. In turn, this reduces the burden on the environment because less combustion also means lower CO2 emissions.

All Viessmann gas condensing boilers meet the EU-wide requirements for efficient condensing technology. Thanks to their high efficiency, if you use one of these gas heating systems, you can make an active contribution to climate and environmental protection.

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MatriX cylinder burner

The MatriX gas burner

The MatriX gas burner represents a milestone in Viessmann heating technology. The use of the stainless steel MatriX gauze endows it with a long service life. The burner is resistant to high temperature loads.

The Vitodens Family

At Viessmann, we off a selection of gas condensing boilers, including combination boilers, open vent boilers and storage boilers. Within this range we have the perfect boiler for any home.

The Vitocrossal Family

With an output range from 87 to 1400 kW, the Vitocrossal family can be deployed in larger residential settings such as apartment buildings, as well as public or commercial premises. These appliances can also generate heat in local heating networks.

Gas condensing boilers

With condensing technology, not only is the heat from the combustion of fuel oil or gas utilised, but also the heat that, with non-condensing heating technology, would otherwise escape unused up the chimney. Condensing boilers extract almost all of the heat latent in flue gases and convert it into additional heating energy. To do this, Viessmann condensing boilers are equipped with stainless steel Inox-Radial heat exchangers, which cool the flue gases before they are routed into the stack, to the extent that the water vapour contained within them is deliberately condensed, transferring the additional heat released into the heating system.

Condensing combi boilers

As part of our range of gas condensing boilers, we offer a number of gas condensing combi boilers. Combining a high-efficiency water heater and a central heating boiler in a single compact unit, our condensing combi boilers are an ideal space-saving option for your property.

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