Since its beginning in 1947, Comair Rotron has been the leading supplier of standard and value-added fans and blowers for a broad range of markets including electronics, computers, telecommunications, and HVAC. In December of 2014, Ammon & Rizos, a manufacturers' rep company, purchased Comair Rotron from Gentherm. Ammon & Rizos has represented Comair since 1954 and has offices in the US, Mexico, and Brazil. Our Comair Rotron Shanghai operation is a state-of-the-art fan and blower manufacturing facility.