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Air-source heat pump
Air heat pumps use the free environmental energy from the outside air. The constructional and financial expenditure is relatively low because no drilling is necessary. It is therefore free primary energy (heat from the ambient air), which is emission-free and is associated with low energy consumption. The acquisition costs are moderate and the operating costs are also relatively low.
Water heat pump
Water heat pumps use the heat from spring, sea or ground water as an energy source. As with the air source heat pump, the construction effort is comparatively low. The water quality is decisive for how high the costs for operation and maintenance will be. This water quality can only be assessed after the system has been built and can also change over time. As a rule, the water heat pump is more suitable for larger objects. The approval process is complex and not possible to be done with every renovation.
Geothermal heat pump
The geothermal heat pumps use the heat from deep in the ground as an energy source for heating and hot water preparation. They require drilling by specialised companies. This is also a free primary energy (heat from the ground), which can be used emission-free and has a low energy consumption. The acquisition costs are somewhat higher comparatively, but the operating costs are minimal. This variant is not possible with every renovation.
Wood heating (pellet firing)
Wood is a domestic energy source that can be used comfortably in modern wood systems. Wood heating can be combined with other heat generators. It is also emissions-neutral, resulting in slightly higher acquisition costs, but as a domestic fuel it has low operating costs. However, it requires a little more space in the basement than other systems and the maintenance of the system is more complex.
District heating / heating network
A heating network refers to the idea of supplying several properties with heat for room heating and domestic hot water using a central heat generation system. Instead of operating their own heating system in each building, a heating centre can be created at a suitable location, which supplies the required heat for all connected buildings. The heat is generated by burning wood chips and pellets, for example.
Waste heat from an industrial plant (e.g. waste incinerator) can also be used. Or a large heat pump system based on the use of sea water generates the heat. This is then routed to the individual properties via the district heating network (pipeline network). The heat in the built-in heat exchanger is transferred to your heating system by means of the district heating transfer station in your own house. Heating networks are by far the most convenient way of heating. District heating is also environmentally friendly because the heat is generated in a CO2-neutral manner using a regionally produced fuel.
Solar energy
A solar thermal system or a domestic hot water heat pump with a photovoltaic system can also be considered as a recommended supplement to heating systems.
1. Solar thermal system
Solar systems supply hot water and can also support the heating. It is a free primary energy (sun), which can be used as an optimal addition to the common heating systems (including oil and gas heating). Heating support is possible, but depends on the dimensions and location. Energy consumption is low and investment costs are moderate. The solar thermal system leads to a reduction in operating costs. However, it cannot be used on every roof.
2. Photovoltaic system
In these systems, electrical energy is produced on the roof and used to operate the heat pump and for other electrical consumers. The investment costs are moderate, but lead to a noticeable reduction in operating costs. Photovoltaic systems can also not be used on every roof. Often a large proportion of self-produced electricity has to be fed into the public grid. The return tariffs for the electricity not used by the owner differ.
All chapters of the guide at a glance
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Engel & Völkers
Licence Partner Switzerland
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Poststrasse 26CH-6300 ZugSwitzerland
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Phone +41-41-500 06 06Fax: +41-41-500 06 07