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Cold Local Heating

A Climate-Friendly and Efficient Heating supply

The term “cold local heating” refers to the supply of heat energy to residential buildings, which is obtained from the environment in the immediate vicinity of the area.
The temperatures are significantly lower than in the known district heating, so that almost no "delivery losses" arise. The desired temperature level in buildings will then be produced by a high-efficient heating pump. This principle can also be used in summer as a cooling machine.

Geothermal energy for heat requirements

Cold local heat takes adventage of the constant soil temperature of approx. 10 ° C, which prevails at a certain depth throughout the year. The geothermal energy is extracted by means of collectors - so-called soil-climate exchangers - which are embedded in the ground at a depth of 1.5 m and 3 m.

A water-glycol mixture in the pipelines absorbs the geothermal heat and transports it via subterraneously laid pipes to the properties in the residential area. Inside the buildings, heat pumps increase the temperature for heating and hot water.

Compared with traditional district heating, there are no heat losses. The heat pumps are supplied, assembled and maintained by Stadtwerke Bad Nauheim.


Saving Money


Cooling of Buildings (Natural Cooling), also possible in Summer


ECO Friendly

• lower CO2 emissions
• lower particulate pollution
• high levels of energy efficiency
• using renewable energy

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No Maintenance Costs


Compliance with the Quality assurance Instructions according to EEWärmeG


Independently Heating Costs considering by the Trends of Gas- & Oil Cost

Patented heat source usage

Studies and Innovation

The company STEINHÄUSER has been dealing with the usage of renewable energies since its foundation in 1999 - especially with geothermal energy. The aim is it to make the geothermal energy usable for every customer.

The soil-climatic exchanger is the result of intensive research and development work by the company Steinhäuser. The new development was honored with the Innovation Award of Bavaria 2012 and the Federal Award 2013 for outstanding, innovative services for the craft. The system convinces with innovation and maximum efficiency.

Boden-Klima-Tauscher vertikal
Boden-Klima-Tauscher horizontal

The University of Munich and the TU Dresden started the research project "+ Eins" in August 2010, which is grant-aided by the Federal Ministry of Economics and Technology, due to a decision of the German Bundestag. A major component of this research project is the power of the soil-climatic exchangers, in different installation variants (horizontal, vertical, one above the other) and in different soil classes, with more than 250 sensors to measure and evaluate. The project took a total of four years (Read more).

  • 2008-2010 ZIM-project on near-surface geothermal energy
  • 2010-2014 “+Eins” project Ludmilla Residential park in Landshut with eight different installation variants
  • 2015-2019 “Grid-neutral Energieplus district” in Geretsried with soil-climatic exchanger under the floor slab
  • 2016-2018 Earth ice storage and surface-close geothermal energy



The currently largest surface-close geothermal field in Germany is being created on an arable land near Frankfurt. From the so-called "cold local-heating-grid” will be supplied around 400 residential units in the future. The patented "soil-climatic exchanger " are installed in an especially  therefor developed new laying variant to a depth of just 3 meters in an area of 11,200 m².

This "flagship project" with a withdrawal capacity of 1.1 megawatt is considered as a showpiece example of sustainable and efficient energy supply. The great advantage over normal district heating: No heat is lost during the transport, but more energy is gained.

background-1 Kopie

Innovative usage of geothermal energy

Earth Slit Milling Machines

With this specially developed milling machine, precise trenches are created in the soil.

  • Compact design of the earth slit milling machine
  • Much lower ground movements than by conventional systems
  • Backfilling the earth slot is possible with the extracted soil
  • Excavated material can be locally set on a desired consistency by adding liquid
  • Milling machine is also deliverable as a tracked vehicle

Trench width (CM)


Trench depth (up to 320 CM)


Winner Innovation Award 2012 in the category: Companies with less than 50 employees

Winner of the Federal Award 2013 in the area: Innovative process for regenerative geothermal use of energy


Winner Innovation Award 2012 in the category: Companies with less than 50 employees


Winner of the Federal Award 2013 in the area: Innovative process for regenerative geothermal use of energy



Steinhäuser GmbH & Co. KG
Industriestraße 10 a
96120 Bischberg-Trosdorf


(+49) 09503 85 54

Steinhäuser GmbH & Co. KG