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U.S. Boiler Company manufactures the broadest line of condensing boilers in the industry, with the highest average efficiency exceeding 85%. Nearly 300 employees at Lancaster, PA facilities. Cast iron from Casting Solutions (Zanesville, OH).

Victory Energy is an American industrial boiler manufacturer founded in 1999 by John Viskup, who continues to serve as President and CEO. The company operates from their headquarters in Collinsville, Oklahoma with an additional manufacturing facility in Cushing, Oklahoma, employing approximately 205 people across 210,000 square feet. Victory Energy has distinguished itself through vertical integration, designing and manufacturing both steam generation and combustion systems in-house ensuring single-source responsibility. The company maintains a strong commitment to sustainability and carbon reduction. Jointly owned by founder John Viskup and Main Street Capital Corporation.

Multinational producing HVAC, fire safety, and building automation. Founded by Warren S. Johnson who invented first electric thermostat.