FRANK Geothermie

Geothermal energy

Renewable. Economic. Sustainable.


Use the free energy out of the ground for heating and cooling buildings.

You are planning a new heating system ? You want to engros your knowledge about heat pump systems and about how to use the free energy from ground ? There are a lot of informations, national guidelines and arguments you can find on different websites.

Here you find some references:


EGEC, The voice of geothermal in Europe:

Great Britain:

Ground source heat pumps (GSHP):


Platform Geotermie:


German heat pump association (BWP):
German Geothermal Association (BVG):
Samples of Buildings "Bauen auf Erdwärme":

What is geothermal energy?

Geothermal energy is the thermal energy stored in the ground which is constantly being recharged like a battery by heat from the Earth's core and - close to the surface - by solar radiation. In our part of the world, the Earth maintains a constant temperature of 8 to 12°C at a depth of 10 metres all year round.

This temperature level is suitable for both energy-saving building heating with heat pumps and also building cooling.
Through the use of geothermal energy, modern heat pumps convert one kilowatt hour of electricity into up to four or more kilowatt hours of thermal energy. Using a geothermal heat pump thus also saves considerable amounts of fossil energy and significantly reduces CO2 emissions.

Did you know?

A ground source heat pump saves 78% of CO2 compared to oil-fired heating.

The sun provides 2850 times the energy required in the entire world.

There are already more than 300.000 geothermal Systems in Germany.

Ground source heat pump system with geothermal probes:


To fulfil the requirements of the European renewable energy directive and the resutant national renewable energy action plans heat pump systems get a real high importance.

For example in germany the implementation of an building energy label increases transparency in determining energy requirements.
Due to their efficiency advantage, houses with heat pumps can easily meet future german EnEV standards and usually reach the highest classes of the energy label, whereby the highest efficiency class (A +++) is only achieved with a ground-source heat pump.


Thermal use of the ground: FRANK GET-System

Different possibilities to use the thermal energy of the ground: FRANK GET- System: ground heat exchangers, lake heat exchanger, various types of chamber manifolds, pipework an welding equipment, all you need for outdor installations.

geothermal energy:

  • is technically mature
  • reduced CO₂ emissions is making it environmentally friendly and climate-friendly
  • the geothermal energy source is sustainable and inexhaustible
  • is independent from fossil fuels
  • in addition to heating, passive cooling is also possible
  • low maintenance
  • ensures security of energy supply, because it is available on the own property

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