A heat pump uses energy stored in the air, ground, or water for heating. This is an efficient and climate-friendly solution. Since heat sources can be accessed in various ways, this type of heating is suitable for almost any type of building. If the operation of a ground source heat pump is not possible due to geographical location or lack of space, an air source heat pump is a viable alternative. A very interesting point: Viessmann heating systems can also be used for cooling in summer. However, it is important to know that for technical reasons, heat pumps work efficiently mainly in combination with low-temperature heating systems. This should be especially considered when modernizing existing heating systems. Your plans should also provide sufficient space for a buffer tank, which is necessary for heat storage.

Heating with a heat pump - a sensible decision if...

• You want to use freely available environmental energy for heating.
• You own a property where it is possible to install geothermal collectors, probes, or an air-to-water heat pump.
• You also want to use the unit for cooling in summer.
• You have underfloor heating or oversized radiators.

With fuel cell technology, both heat and electricity can be generated. This contributes to a high degree of self-sufficiency, as electricity can be used by the residents themselves or fed into the public electricity grid. In total, up to 40% energy can be saved this way. Since the hydrogen required for the operation of the Viessmann heating system is obtained from gas, a suitable connection is an important prerequisite. It is also important that electricity and heat generation occur in parallel. To produce sufficient power, heat consumption must be correspondingly high. Therefore, it is advisable to have a buffer tank for storing surplus heat. With a buffer tank, the heating system is also suitable for single-family homes with regulated heat requirements.

Heat and electricity generation - a sensible decision if...

• You heat with gas or have a gas connection
• You want to generate heat and electricity with a modern heating system
• You want greater independence from your electricity supplier

Solar thermal energy uses freely available solar energy as a heat source. Solar thermal systems are suitable for domestic hot water preparation or as a support for the heating system. It is not possible to provide the entire heat supply here. However, the savings potential is impressive: 60 percent of thermal energy can be saved annually if hot water preparation is provided, and approximately 30 percent if a combined central heating support system is provided. By reducing the use of fossil fuel heating systems, both energy costs and CO₂ emissions can be reduced. However, for the investment to be worthwhile, the roof must be unshaded and oriented to the south, west, or east.

Solar thermal energy - a sensible decision if...

• You want to use solar energy for water heating or as a supplementary energy source for your heating system.
• You own a house with an unshaded roof surface facing south, west, or east.
• You want to supplement your existing heating system with renewable energy sources.

A photovoltaic system converts solar energy into electricity. This energy can be fed into the public electricity grid for compensation or used by the owner himself, for example, to power electrical installations in his household, such as a heat pump. As electricity purchase fees decrease and electricity prices increase, the latter option is currently much more interesting. For an investment in such a system to be worthwhile, the roof must be oriented to the south, west, or east. In addition, make sure that it is not obstructed by trees or mountains, etc.

Photovoltaics - a sensible decision if...

• You own a house with an unshaded roof area facing south, west, or east.
• You want greater independence from the electricity supplier by using energy from the roof.
• You want to generate electricity yourself to power your heating system.
• You want to export electricity to the national grid.

In addition to heating, the indoor environment is also affected by mechanical ventilation. It helps to prevent moisture and thus prevents mold formation and possible building damage. Systems with heat recovery can also relieve the heating system. This is because the heat accumulated in the exhaust air is not simply discharged to the outside, but is used to heat the incoming fresh air. Integrated filters retain fine dust and pollen in the incoming fresh air. The latter provide relief, especially for allergy sufferers. Basically, centralized and decentralized ventilation systems can be distinguished. Centralized systems are more suitable for new buildings, as their installation is more complex, but decentralized systems are also a good solution for existing buildings and for ventilating individual rooms.

Mechanical ventilation - a sensible decision if...

• You want to recover valuable heat energy from the exhaust air using heat recovery.
• You want a consistently good and healthy indoor environment.
• You want to prevent mold infestation.
• As an allergy sufferer, you want to filter particles from the air.
• You want to prevent fine dust and noise.
• You want to avoid drafts.

Electric hot water systems heat domestic hot water only when it is actually needed. This is particularly hygienic, as water does not remain stagnant in the piping for long periods. In addition, hot water can be supplied independently of the central heating system. However, given the relatively high electricity costs, these systems are mainly useful in rarely used rooms, such as a guest bathroom. Electric area heating systems are particularly suitable for newly built low-energy and passive houses. They have particularly low energy consumption for heating, as well as low electricity costs. Benefit: quick heating of tiled floors in the bathroom and kitchen. Electronic Viessmann instantaneous water heaters and electric area heating systems in combination with heat pumps ensure a sustainable increase in system efficiency.

Electronic hot water systems - a sensible decision if...

• You only need hot water in a few rooms.
• You want to heat water independently of central heating.
• You want to heat a newly built passive or low-energy house.
• You are looking for quick heating of rooms.