The INTEGRAL-Group owes its name to a globally significant invention in the year 1919. The result of the research on the sector of coal gasification in order to produce town gas is the INTEGRAL gas generator, which made the degassing and gasification processes possible in only one gadget. This invention has been placed on the market in 1919 in a purpose-founded company. With this technology many gas generating plants were built in several European cities and the company was able to position itself as a market leader in this area.
1969 Foundation of Integral-Montage Anlagen- und Rohrtechnik Gesellschaft m.b.H.
1977 Set up of our own production hall, workshop and storage facility for the production of metal constructions, vessels and machines in Achau, South of Vienna.
1981 Foundation of the sister company „INTEGRAL“ Montage Anlagen- und Rohrtechnik Gesellschaft m.b.H. in Wels/Upper Austria.
1985 Acquisition of the shares from today called INTEGRAL Engineering und Umwelttechnik GmbH by Integral-Montage Anlagen- und Rohrtechnik Gesellschaft m.b.H. Relocation of the technical and commercial management to Achau and extension of the office as well as the company infrastructure.
1989 Structuring of new location in Wallern/Upper Austria.
1991 Establishment of the subsidiary Integral Anlagentechnik Gesellschaft m.b.H. in Berlin/Germany.
1997 Purchase of 100% shares of the long-established company Unistahl Bau- und Rohrleitungsbau GmbH.
1999 Foundation of the ecotec Anlagentechnik GmbH.
2000 Merger of Integral-Montage Anlagen- und Rohrtechnik Gesellschaft m.b.H. in Vienna and „INTEGRAL“ Montage Anlagen- und Rohrtechnik Gesellschaft m.b.H. in Wallern/Upper Austria.
2008 Foundation of INTEGRAL MONTAGE S.R.L. in Ploiesti / Romania.
2009 Foundation of INTEGRAL CONSTRUCTION INTERNATIONAL d.o.o. in Novi Sad / Serbia.
2010 Spin-off of the building services engineering of Unistahl Bau- und Rohrleitungsbau GmbH in the newly established UNIGT GmbH.
2012 Bundling of the building services engineering activities of the INTEGRAL Group into INTEGRAL Gebäudetechnik GmbH.
2014 Acquisition of Panagger, Heizungs- und Sanitärinstallationen Gesellschaft m.b.H. based in Wallern/Upper Austria as a 100% subsidiary of INTEGRAL Gebäudetechnik GmbH.
2015 Merger of Panagger, Heizungs- und Sanitärinstallationen Gesellschaft m.b.H. based in Wallern/Upper Austria and INTEGRAL Gebäudetechnik GmbH.