AMETEK Hughes-Treitler (also known as Ametek Thermal Systems, AHT) is a supplier of thermal solutions for the aerospace and defense industries. It offers air-cooled and fuel-cooled oil, buffer, and engine service coolers, air-to-air and fuel oil heat exchangers, precoolers, gearbox cooling systems, and hydraulic coolers. The company develops products for military and commercial engines, rotary, airframe, and similar applications.