The company is rowing continuously and has subsidiaries in Sweden, Finland, Norway, Germany, Canada, India and China. All our products are CE marked and we place great emphasis on making them easy to install and use. In our wide product range you will find duct fans, insulated or uninsulated for rectangular or circular ducts. In addition, a wide range of roof, wall, radial and explosion proof fans.

For healthy indoor air and energy saving, we have the well-known energy recovery unit Heru ®. Heru ® recovers up to 86% of the energy used by regular ventilation is lost. These are developed, manufactured and sold by AB C.A. Ostberg in Avesta.