Air Hygiene International, Inc. (AIR HYGIENE) is a privately- held professional services firm headquartered in Tulsa, Oklahoma with additional field offices in Las Vegas, Nevada; Houston, Texas; and Philadelphia, Pennsylvania.

Air Hygiene specializes in emission testing services for a variety of industries including solid, liquid, & gas fired utility plants, turbines, engines, refineries, printers, glass plants, chemical plants, various manufacturers, and related industries.