Gas heating with gas condensing boiler or gas condensing boiler 

For convenient heat generation with natural gas, Viessmann offers various technologies that meet a wide range of needs. For example, for gas heating in new builds or modernization projects, for owner-occupied apartments, single-family homes or even for large projects in the housing industry. Gas condensing boilers are particularly suitable for use in new buildings. These are extremely compact and wall-mounted units that can fit in almost any room.

If a solar system is to be connected for DHW heating, on the other hand, gas condensing boilers with an integrated solar heat exchanger are recommended. The floorstanding units are already designed for bivalent operation. Technically, Viessmann gas condensing boilers are state of the art and cover an output range from 2 to 100 kW. They are therefore able to supply heat efficiently and reliably to detached, semi-detached and small apartment buildings at all times.

Condensing boilers with gas are also available in larger dimensions. These are mainly used in buildings with a high heat demand. These are usually apartment buildings, public and commercial buildings. Thanks to the cascade function, several devices can be quickly connected to form a unit and also provide reliable heat in this area.

Using future-proof heating technology today

The calls for resource-saving heating technologies are getting louder and louder. New gas condensing boilers should not only be clean, but also sustainable. In response, Viessmann has already built the future into its gas condensing boilers. Thanks to combustion control, the gas condensing boilers automatically adjust to different types of gas - including biogas admixture. In this way, the heating systems sustainably meet the requirements for resource-saving heating technologies.

Another argument for choosing a gas condensing boiler is that energy does not have to be stored in the house. The compact gas condensing boilers are space-saving and leave additional room in the utility room or basement.

Save up to 35 percent energy by replacing outdated gas heating system

In Germany alone, there are still around two million heating systems in operation that are more than 25 years old. By replacing these boilers with highly efficient condensing boilers, end users could save a lot of energy with modern gas heating - up to 35 percent in combination with solar technology. In arithmetical terms, this would be ten percent of Germany's total energy consumption, while at the same time reducing CO2 emissions by 54 million tons a year. We have summarized what you should look out for when replacing a boiler in the section Modernizing gas heating systems.