Established in 1965, St. Louis-based Spectrum, Inc. makes electric heating systems that keep railroad track switches operating through ice and snow. Its specialty is practical rail equipment, including flat rail heaters and crib heaters, supported by control systems built with commercial-off-the-shelf components for simpler maintenance. Spectrum also manufactures modular industrial heaters, including electric infrared die heaters, extending its work beyond the railroad.
ISO 9001:2015
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
APEC ThermalFrom its Cleveland-area facility, APEC Thermal designs and manufactures railcar thawing systems and winter switch-heating equipment for the railroad industry. A division of APEC Engineering, the company combines radiant-infrared heating experience with in-house manufacturing to provide both ready-to-ship components and custom thawing systems. Its switch-heating line has expanded over the past five years, while its broader engineering capability supports site evaluation, system design, and project delivery.BEDFORD, OH
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
Power Modules IncWith more than 45 years in industrial process heating, Power Modules Inc. designs and fabricates electric heating and temperature-control systems for manufacturers. The Newtown Square company also supplies precision components and supports installed systems through maintenance, repair, engineering, and energy-cost surveys. Its staff brings more than 150 years of combined technical experience, and PMI builds equipment ranging from control panels to large ovens for end users and OEMs.NEWTOWN SQUARE, PA