Profile: Heatrex Inc. supplies tubular heating elements, bolt heaters, immersion heaters, duct heaters and circulation heaters. Our proprietary software removes subjectivity from the design process, providing innovative solutions for design challenges. We are an ISO 9001:2000 certified company. We provide heat directly to air, metals and various types of liquids, depending on the application. Our finned tubular heaters are used for natural or forced convection space heating and industrial process air heating.