Rational began in 1976 with the idea of combining steam and convection cooking into one appliance, however, Rational was not content to just be a "mechanical engineer," but instead as an "innovative solutions provider." Rational's top priority is to satisfy their customers with durable, reliable, and easy to use equipment. This focus has transformed Rational into an integral part of industrial kitchens and a market leader of commercial kitchen equipment. Rational is dedicated to quality and their customers, providing a range of options in their signature combi-steamers.