Sturtevant was an early pioneer in the industry with the first industrial process air conditioning installation at the Walter Baker Chocolate factory in 1907. In 1910, they introduced the first commercially engineered system for railway passenger cars. By 1946, over 8500 passenger cars on more than 40 railways were utilizing complete Railvane systems or apparatus in the form of fans, condenser and evaporator coils, ice water units, heating coils and other supplementary equipment such as toilet and kitchen exhaust fans. Frederick Wittenmeier is credited with designing the first hotel installation in 1906 but all the equipment used was Sturtevant.
The company would design and engineer installations in departent stores, theatres, hotels, hospitals and public buildings, bakeries, breweries, printing plants, textile mills and numerous other industrial plants through the 1950s.
The Westinghouse Precipitron, the first electrostatic air cleaner, was developed in 1935 and brought to Sturtevant in 1945.
In 1954, the Air Conditioning Division became a separate operating division with its relocation to Westinghouse's huge new plant in Staunton, VA. This would remain the headquarters for their commercial-industrial air conditioning until its sale to McQuay in 1982.