Koch creates life’s basic necessities, while innovating ways to make them even better. Yet our advocacy for a free and open society is what truly sets us apart.

Koch, Inc. (/ koʊk /) is an American multinational conglomerate corporation based in Wichita, Kansas, and is the second-largest privately held company in the United States, after Cargill. [6]

Drive innovation and efficiency across Koch companies with opportunities spanning multiple career fields, such as Engineering and Information Systems & Technology.

Koch Air is a leader in the HVAC distribution industry. One of the oldest Carrier distributors in North America, Koch Air provides Residential and Commercial HVAC equipment as well as …

Based in Wichita, Kansas, Koch, Inc. is one of the largest private companies in America, with annual revenues that have exceeded $125 billion.

Based in Wichita, Kansas, Koch is one of the largest private companies in America. A diverse set of businesses and industries across the world, we work together to keep improving and …

Jan 7, 2026 · Koch Filter is a world-class manufacturer of air filtration products, including pleated filters, high efficiency filters, and HEPA filters for commercial, industrial, and specialty …