In 1929, the American Radiator Company (founded 1892) merged with the Standard Sanitary Manufacturing Company (founded in 1875) to form the American Radiator and Standard Sanitary Corporation. The plumbing division, Standard Sanitary, would continue to sell their products under the "Standard" label until 1967, when the company changed its name to American Standard Corporation. The American Standard label was used for both divisions from that year on.
In 1929, American Standard bought the Kewanee Boiler Company which it kept until the Early 1970s.
In 1984 the group acquired HVAC company Trane. In 1999, American Standard purchased control of the United Kingdom-based Armitage Shanks and Ceramica Dolomite of Italy from Blue Circle Industries for $430 million.
On 1 February 2007, the company announced it would break up its three divisions. The plan included the sale of its kitchen and bath division; and the spin off of its vehicle control systems business; the remainder of the company, primarily its airconditioning business was to be retained, and renamed "Trane":