ENSY`s business started in 1903. Over the years the firm has delivered heating and ventilation products for indoor environments to the Scandinavian, European and Russian market. Products have been delivered under brand names such as Pyrox, Frico, Systemair and Villavent to name a few. Since the 70s, it has been produced about 225,000 residential ventilation units by ENSY and delivered to the Russian, European and Scandinavian market. Until 2004, all production was outside Bergen in Norway. After that the production was moved to the university city Cluj Napoca in Romania. All product development is now done on ENSY AS headquarter in Jaren, Norway (about 75 km north of Oslo) to maintain close to the market. The main objective of ENSY in the future is to stay in front technologically to develop and produce environmental ventilation products. With long experience in manufacturing and development of residential ventilation, the next natural step for ENSY was to develop and launch its own series aggregates for balanced ventilation.