Hansjürg Leibundgut is Professor of Building Services at the Institute of Building Technology, Swiss Federal Institute of Technology (ETH Zurich), and a partner in the company Amstein + Walthert in Zurich.

He studied mechanical engineering at the ETH Zurich, with the main focus of his studies on reactor technology and fluid dynamics. During his time as a scientific assistant at the Institute of Food Science and Nutrition, he became involved in the fields of solar technology and absorption technology. He concluded his time at the ETH with a dissertation on these two specialist subjects.

After 4 years' industrial experience in the R&D sector of absorption refrigeration technology, he transferred to Zurich's cantonal administration and was soon appointed to a senior position with responsibility for energy, air quality and technology in 1,500 public buildings.

In 1989, he returned to the private sector and became part-owner and senior engineer with Amstein + Walthert AG. Within this company, he developed the specialist areas of HLKSE (HVAC, plumbing and electricity = house technology), facility management, dynamic building simulation, etc. and supervised more than 100 projects for a wide variety of architects.

Due to a lack of suitable construction components, he developed various new products in conjunction with Swiss industrial partners.

[last updated 20-Feb-07]