Aermotor as a company arrived by 1918 when La Verne Noyes donated nearly two and one half million dollars to establish scholarships at many colleges and universities such as University of Chicago and University of Iowa for veterans of the World War. These scholarships are still available today. La Verne Noyles died in 1919 leaving no direct heirs, and left the Aermotor Company to a tax paying trust, listing 48 colleges and universities as beneficiaries.
The ownership of Aermotor Company changed hands in 1958, when Motor Products, later known as Nautec purchased the company. They moved the manufacturing operations to Broken Arrow, Oklahoma from Chicago and the headquarters to Conway, Arkansas.
During this time, the company started purchasing castings from outside vendors, and by 1970, all castings came from an Argentinean vendor. Later on, the entire manufacturing process shifted to Argentina.
Ownership of Aermotor again changed hands in 1976, when Valley Steel Product Co. purchased the company. They cancelled the licensing agreement with the Argentinean vendor and returned the manufacturing to a dedicated facility in Arkansas.
In 1984, the Valley Pump Group was itself purchased by the Mueller Co. of Decatur, Illinois, who then sold off Aermotor to an investor group. They shifted base to San Angelo, Texas, changed the name to Aermotor Windmill Corporation, and by 1998 sold it off to Kees Verheul.