AAON INC revenue for the last year amounted to 19.85 B MXN, the most of which — 15.25 B MXN — came from its highest performing source at the moment, AAON Oklahoma, the year earlier bringing 12.95 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought AAON INC 19.17 B MXN, and the year before that — 16.80 B MXN.