Watlow Electric Manufacturing

Watlow Electric Manufacturing Company is a custom designer and manufacturer of industrial heaters, sensors, controllers, and process software headquartered in St. Louis, Missouri and founded in 1922. Its solutions are used in the power generation, semiconductors, plastics processing, foodservice, life sciences, and aerospace industries for highly regulated and mission-critical operations. Watlow’s products lude electric thermal systems, advanced controllers, temperature sensors, tubing and fittings, and system integration software. The company maintains certification to ISO 9001, CE, and multiple safety standards while emphasizing energy efficiency and reliability. Watlow has more than 2,600 employees, operates production facilities in the U.S., Europe, and Asia, and partners with OEMs and industrial operators globally. In 2025, Watlow Electric Manufacturing reported annual revenue of $896.6 million. It was acquired by Tinicum LP and continues to deliver innovative solutions that support electrification and process optimization in modern manufacturing environments.​