American Exchanger Services, Inc. (AM-EX) is a manufacturer of the highest quality and most efficient heat transfer equipment including feed water heaters, unfired heat exchangers, main steam condensers and other miscellaneous equipment for the global market. AM-EX is a certified ASME Code Shop holding the "U" Stamp for fabrication, the "R" Stamp for repairs, and the "PP" Stamp for power piping. We are a member of HEI, helping to write the standards for the entire heat exchanger industry.

AM-EX is headquartered in West Allis, Wisconsin with fabrication and machine facilities in Hartford, Wisconsin. AM-EX was incorporated in 1984 by Thomas Muldoon, PE. Today, under the same ownership, AM-EX leads the industry in the design, fabrication and service of heat transfer equipment for the Power Generation, Process, Nuclear, Pulp and Paper and Renewable Energy Industries.