Headquartered in Tulsa, Oklahoma, AAON is a leading manufacturer specialising in Heating, Ventilation, and Air Conditioning (HVAC) equipment. The company derives 97% of its revenue from the United States, with manufacturing facilities located in Oklahoma, Texas, Missouri, and Oregon.

AAON distinguishes itself through the innovative design of highly configurable equipment, combining the cost efficiencies of mass production with the flexibility of bespoke customisation. A significant competitive advantage is AAON's strategic use of independent sales channels, which capitalise on the entrepreneurial strengths of smaller partners.

In 2021, AAON acquired BASX for $100 million in cash, with an additional $80 million in contingent consideration. BASX specialises in engineering and manufacturing high-performance cooling solutions tailored for the hyperscale data centre market, as well as ventilation systems for cleanroom environments in the biopharma and semiconductor industries.