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Thermal Circuits Inc

Thermal Circuits, Inc. is a manufacturer of surface heaters, air heaters, molded heaters, heater assemblies, and infrared panel emitters.

1 Technology Way, Salem, MA 01970, United States

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Our Company

We service a wide variety of markets and geographic areas and, through continuous quality improvement, strive to maintain world-class leadership in all aspects of our business.

Founded in 1955, by Francis Brown in Salem, 20 miles north of Boston, Massachusetts, the company first manufactured graphite lubricant and nichrome wire sheets for hot trays, casseroles and carafes for the food service industry. By the mid-1960’s, Thermal Circuits initiated development of etched foil element technology and pioneered the use of polyimide film as an electrical insulation for etched foil element gyro and camera heaters used in the military and aerospace industries.

“Firsts” from Thermal Circuits continue to this day. We design, prototype, and produce heaters and assemblies for the initial etched foil heated food service industry’s holding bins and toasters, medical market’s infant incubators and immunohistochemistry diagnostic instruments, automotive industry’s side-view mirrors and seats, aeronautical market’s angle-of-attack pilot indicators, and military market’s anti-ice / de-ice radomes, feed horns, and reflector antennae systems.


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  • Location:

    Other: 1 Technology Way, Salem, MA 01970, United States