Tunnel ventilation

NOVENCO Building & Industry has supplied jet fans for longitudinal ventilation of road and rail tunnels since the early 1970s. Today, the company ranks among the world’s leading manufacturers of tunnel ventilation and smoke control systems.

The NOVENCO tunnel ventilation products and systems are manufactured in Denmark according to the highest standards and are well-known for an uncompromising quality. The innovative tunnel solutions feature high efficiencies and low sound levels due to the use of modern design and technologies.

Tunnel ventilation



Key characteristics of NOVENCO tunnel jet fans

  • Uni-directional or 100% reversible executions

  • Tested and certified smoke control systems up to 400 °C for 2hrs

  • High efficiencies and low sound levels

  • Special deflectors for optimal installation efficiency

  • High thrust at minimum installation height

Meet a true height-saver

Based on its many years of experience in the tunnel ventilation field, NOVENCO Building & Industry has developed a special, space-saving range of rectangular design jet fans. Compared to standard round tunnel jet fans, the height saving is almost 200 mm. In combination with specially designed and aerodynamically shaped deflectors, a much better overall system efficiency is achieved compared with conventional air deflectors. By using these NOVENCO height-savers, the tunnel ceiling height is significantly lower, resulting in huge savings on construction costs over the whole length of the tunnel.

tunnel ventilation system

NOVENCO added value for tunnel ventilation systems

  • Tunnel ventilation and smoke control design assistance

  • Deterministic and probabilistic system calculations for risk analysis

  • Project specific product fine-tuning

  • Project supervision from design to customer handover

  • FAT (Factory Acceptance Test), SAT (Site Acceptance Test) and system commissioning

Read about the general function of tunnel ventilation systems via the below link.



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NOVENCO Building & Industry
Oeverup Erhvervsvej 50-52
4700 Naestved

Tel. +45 70 77 88 99
DK 16 92 66 47

Opening hours OFFICE
Monday - Thursday 8.00 AM to 4.00 PM CET
Friday 8.00 AM to 3.30 PM CET

Opening hours GOODS IN and OUT
Monday - Thursday 6.30 AM to 2.30 PM CET
Friday 6.30 AM to 2.00 PM CET