In early 1961 EWC Inc. was formed as a manufacturing company of power transformers for military and commercial use. Today, EWC Inc. transformers are located on smart guided missile systems, helicopters, airplanes, the space shuttle and many other applications. The successful growth of this business allowed EWC to expand its manufacturing capabilities and enter into the HVAC industry. In 1999 EWC sold the transformer business to focus solely on the HVAC industry.