Founded in Columbus in 1949 by retired Major General Earnest Briscoe, BriskHeat manufactures flexible heating elements and temperature-control systems for freeze protection and industrial process heating. The company began by making military airplane wing de-icers and still builds its products around a patented multi-stranded resistance wire known for flexibility and durability. BriskHeat remains headquartered in Columbus and now supports customers worldwide through manufacturing operations in Costa Rica and Vietnam and sales offices in China, Taiwan, and Germany.
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Watlow Electric Manufacturing CompanyWatlow Electric Manufacturing Company is a St. Louis-founded industrial manufacturer that designs and makes complete thermal systems, including electric heaters, temperature sensors and control equipment. Founded by Louis Desloge Sr. in 1922 to produce heating elements for the shoe industry, Watlow now employs more than 4,200 people across 12 manufacturing facilities and five technology and development centers. The company holds more than 1,100 patents and brings a century of thermal engineering experience to demanding industrial applications worldwide.LOUIS, MO
HeatrexEstablished in 1959, St. Louis-based Heatrex designs and manufactures engineered electric heating and thermal-management equipment for commercial, industrial, OEM, and rail applications. Its work ranges from custom heating systems to components such as tubular elements and immersion heaters, with concept development, prototype testing, and production handled across two Missouri manufacturing facilities. Heatrex is part of ASPEQ Heating Group and serves customers in North America and abroad.MEADVILLE, PA
Kuhlmann Electro-Heat A/SFounded in 1959, Danish family-owned Kuhlmann Electro-Heat A/S designs and manufactures electric surface-heating systems, including industrial heating blankets, drum heaters and custom silicone heaters. The company developed its first industrial heating blanket in 2002 for curing wind-turbine blades and now makes made-to-order solutions in-house for demanding industrial processes. Its products are used by customers in more than 65 countries, with specialized applications ranging from composite curing to maritime maintenance and high-voltage cable installation.SPRINGBORO, OH
Micropyretics Heaters International Inc. (MHI Inc.)Founded in Cincinnati in 1991, Micropyretics Heaters International Inc. manufactures patented electric thermal equipment and materials for energy-efficient industrial heating and decarbonization. Its work spans compact process-gas heaters and high-temperature steam generators, alongside specialized heating materials and controls, serving more than 1,300 customers and exporting to over 25 countries. MHI’s vertically integrated operation has developed its own electronics, refractories, software, and components since the mid-1990s.CINCINNATI, OH