AAON
 AAON (NASDAQ: AAON) designs manufactures and sells semi-custom heating ventilation and air conditioning equipment (HVAC) for commercial and residential use. Its subsidiary AAON Coil Products manufactures a variety of heating/cooling products as well as coils used in the heating ventilation and air conditioning (HVAC) industry and provides coils to AAON as well as to other customers.