Founded in 1881 in Chicago by Isadora and Benjamin Weil, Weil-McLain was originally named Weil Brothers.
In 1918, after acquiring the main supplier, J.H. McLain Company, the company was renamed Weil-McLain and boiler plant operations moved to Michigan City, Indiana.
Throughout the 20th century, Weil-McLain grew to be the largest U.S. manufacturer
of cast iron boilers and a leader in the hydronic