Home | Sitemap | imprint about us Sanitary Heating construction Solar partner Contact about us news Contact Keller Sanitärheizung GmbH - Sanitary • Heating construction • Solar Your reliable partner. On June 29 , 1969 the company Keller and Tyroller GdbR was founded in Ketsch Schubertstrasse 25 by Helmut Keller and Ing.Arthur Tyroller. Initially with 1 fitter and 1 helper. The company dealt with the assembly of heating systems for 1 and 2 family houses. On January 2nd , 1970 a GmbH was founded with the company name Heizungsbau Keller GmbH located in Ketsch, Schubertstr. 25. The company's activities consisted of the supply and installation of heating and ventilation systems, including oil and gas firing systems. In the same year the workforce grew to 6 men and 1 office worker. The area of activity extended south to Karlsruhe-west to Neustadt an der Weinstrasse, north to Darmstadt, partly to Frankfurt and east to Eberbach im Odenwald. In the years from 1976 to approx. 1982, larger construction projects such as multi-family houses and smaller housing estates were created for various property developers. During this time, the workforce numbered around 12. In 1983 , a piece of land was acquired in the Seestr. 97 industrial estate in Ketsch and a residential building with an office and warehouse was built. In 1984 the workforce had to be reduced for economic reasons and one again worked with 2 fitters and 2 service technicians . In 1986 , Mr. Helmut Keller took over the company as the sole shareholder. In 1987 the son Carsten Keller started an apprenticeship as a heating and ventilation engineer in his parents' business. After our then operations manager left us for a short time in 1992, the company was left without an operations manager. The freshly baked journeyman Carsten Keller was approved as operations manager by the Chamber of Crafts by granting an exemption after a corresponding aptitude test. In 1995 Carsten Keller passed the master craftsman examination with success. In 1996 , the second son, Jochen Keller, who is a trained plumber, joined the family business. Sanitary installations have been added to the range of services. In 2006 Carsten Keller joined the company as a partner. In 2006 , Mr. Carsten Keller passed the expert examination and was confirmed by the Chamber of Crafts as an appointed and sworn expert for central heating and ventilation construction. In 2007 , Jochen Keller passed the examination as a specialist in solar technology / photovoltaics at the Mannheim Chamber of Crafts. Phone: 06202 - 61125 | Fax: 06202 - 68843 | Email: info@keller-heizung.de