Our business principle is to support the improvement of indoor air quality by providing economical and environmentally-friendly solutions and innovations of machinery and accessories used in the production and supply of air duct systems.

Spiro International S.A. is the undisputed world leader in the development and manufacture of machines for the production of round ducting and fittings in sheet metal. Spiro® is also a leading supplier of fittings and system solutions for the ventilation and air-conditioning industry.

With 80% of the world’s round ventilation components produced on Spiro® machines, the facts speak for themselves - we are truly the company to rely on when it comes to solutions concerning round ventilation systems. Consequently, users of Spiro® machines are found on all five continents.

Ever since the company was founded in 1956, there has been maximum focus on quality and precision.

Situated in Bösingen, Switzerland, quality comes naturally but Spiro®’s endeavours go beyond the traditional Swiss reliance on quality. Spiro® has striven to raise the standards of production and support even higher. As a result of highly skilled employees, Spiro® designs and produces an extensive range of sheet metal machines. In addition to this core production, the company also markets a line of patented fittings based on the Spiro® system sealing technology. We have always aimed at providing complete solutions as well as products. In our experience almost every project and installation is unique, which is why we present bespoke solutions. Having satisfied clients is undoubtedly every company’s goal and with experienced and qualified staff listening closely to the customers’ needs, Spiro® also succeeds in this area. We have an outstanding track-record of satisfying customers with problems solved - around the globe. This is based on our state-of-the-art machinery, active service and support as well as our strict standards of precision and quality and overall worldclass services. Presently, we are witnessing a very rapid growth of round ventilation systems, as compared to rectangular systems. The early decision of Spiro® to fully concentrate on round systems has been a key factor in supplying users with cost-effective methods for the production of high quality ventilation systems. Many of the HVAC-industry’s leading companies are users of Spiro® machinery and equipment. With our continued emphasis on research and development, as well as user support and promotion, this is highly likely to be the case in the future too.