Founded in 1982, owner-operated WS Wärmeprozesstechnik GmbH develops and manufactures energy-saving, low-emission burner systems for industrial furnaces. Based in Renningen, the company is known for its patented FLOX® flameless oxidation process, which is used in thousands of industrial applications, and for tailoring burner solutions to specific customer needs rather than selling from a catalog. More than 100,000 WS burners are in service worldwide, supported by global service operations and a U.S. subsidiary established in 1997.
ISO 9001:2015
ISO 45001:2018
Bloom EngineeringFounded in Pittsburgh in 1934, Bloom Engineering designs and manufactures industrial burners and combustion systems for high-temperature industrial and process heating. The company has built its business around custom furnace combustion engineering, with a focus on low-emissions performance and fuel flexibility, and operates an Engineering and R&D Center of Competence at its Charleroi, Pennsylvania headquarters. Bloom joined Wabtec in December 2024 and serves customers through subsidiaries in Germany, India, and China.PLEASANT HILLS, PA
PSNERGYFounded in Erie in 2013, PSNERGY develops in-house combustion-monitoring technology and provides engineering services for industrial furnaces. Its burner-by-burner data systems, patented radiant tube inserts, and field expertise help metal-processing customers improve furnace performance while reducing energy use and emissions. The company says its work has saved more than 31 million pounds of CO2, and its team includes an ISO 50001 Certified Auditor and a Process Heating Specialist.ERIE, PA
Star Combustion Systems LLCSince 2006, Mason-based Star Combustion Systems has built industrial process burners, process air heaters, and the control systems that manage them. The company brings more than 30 years of combustion and controls experience to equipment commissioning, repairs, emissions testing, and ongoing burner-system support worldwide. Its control panels are built in a UL508A-approved shop for use in the United States and Canada.MASON, OH
Selas Heat Technology CompanyFounded in 1896, Selas Heat Technology Company is a combustion-industry pioneer whose history stretches from gas lamps to industrial heat technology. Today, the Streetsboro manufacturer serves thermal-processing operations with industrial gas burners and combustion systems, supported by engineering expertise developed over more than a century.STREETSBORO, OH