Gotthard tunnel axial fan                                              Rozelle Tunnel Fans2

As a leading provider of air and gas handling equipment to critical process industries, Howden has always had a focus on high performance where reliability and safety matters.
For almost 100 years Howden has supplied fans for ventilation within tunnel projects worldwide. Our fan technology has developed along with our capability to support system design and long-term operation. Howden’s solutions for tunnel ventilation involves three distinct elements with Ventsim™ software aiding design and simulation, axial and jet fans providing critical air and digital technology giving operational insight and control.