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Flettner Ventilator

Flettner Ventilator is the world leader in the design and manufacture of wind powered rotary ventilators for commercial vehicles. Applications of the Flettner Ventilator are endless in the mobile world from commercial vehicles, trailers and marine uses. For vehicle applications of the Flettner Ventilator see Vehicle Applications.


For over 80 years Flettner has supplied wind powered roof mounted ventilators to vehicle manufacturers, upfitters and coach builders around the world.

The main benefits of fitting a Flettner Ventilator include:-

  • They extract heat thus cooling the inside of the vehicle for passengers, animals or goods in transit
  • They remove moist, humid air thus reduce condensation which can cause the vehicle to be damaged by rust or corrosion and damage any goods in transit
  • They remove odours, smells and fumes making for a cleaner, safer environment for the driver or passengers
  • They are eco-friendly and totally wind powered – subject to a 10mph wind they will ventilate even when the vehicle is stationary
  • Flettner is the only roof vent manufacturer to offer a LIFETIME Warranty on their products
  • In addition, there are no running costs or maintenance costs .

You can find out more about Flettner products and how easy they are to fit from YOU TUBE.
Stale air, strong odors, condensation and excess heat create a severely degraded working environment. This can be uncomfortable and unhealthy for vehicle occupants and result in the spoilage of carried goods, packaging and the vehicle interior. At worst, fumes, poisonous chemicals or inflammable gases can be deadly. With legislation requiring employers to have a duty of care towards their employees or risk prosecution vehicle ventilation has to be seen as a priority.

…can you afford not to fit a Flettner Ventilator?

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