American Standard Companies Inc. was a manufacturer of heating, ventilation, and air conditioning (HVAC) systems, plumbing fixtures, and automotive parts.

The remaining business was renamed Trane, which continues to build HVAC systems under the American Standard name.

In 1929, American Standard bought the Kewanee Toilet Boiler Company, which it kept until the early 1970s.

In 1968, the group purchased earthmoving and mining product range of the Westinghouse Air Brake Company (WABCO).

In 1999, American Standard purchased control of the United Kingdom-based plumbing fixture companies Armitage Shanks and Ceramica Dolomite of Italy from Blue Circle Industries for $430 million.