HBI - Your partner for ventilation, aerodynamics and safety of tunnels

HBI is a firm of consulting engineers. The services focus on the design, planning and execution of projects in the field of tunnel ventilation, prediction of emissions, safety issues as well as the aerodynamics and thermodynamics of road and rail tunnels. HBI offers the entire range of services related to tunnel ventilation - from first feasibility studies, measurements, detail studies, project execution up to refurbishment and optimisation during operation.

With more than 1000 reference projects HBI is an internationally leading consultant specialised in tunnel ventilation. Quality, innovation and reliability characterize the services of HBI.

HBI Haerter Consulting Engineers is an independent company owned by its management and originates from SHB Schindler Haerter Ltd founded in 1963. From the offices in Bern and Zurich (Switzerland) and in Heidenheim (Germany) more than 25 ventilation specialists work on the worldwide projects.