About Us

Smith Cast Iron Boilers

Since 1853 the name Smith has been synonymous with hydronic heating equipment, specifically cast-iron boilers, in both the residential and commercial building markets.

Previously known as the HB Smith Company, foundry owners and brothers Henry and Edwin Smith began manufacturing heating boilers in downtown Westfield, Massachusetts adjacent to their cast iron foundry operations.

HB Smith is best known in the commercial boiler market by their creation of the first sectional cast iron boiler that allowed “sections” to be isolated and repaired without losing overall boiler functionality. The legendary Mills boiler was invented my John Mills and was found in almost every large commercial building throughout the Northeast and Midwest including schools, universities, hospitals, churches and other large manufacturing facilities requiring substantial heating BTUs. Today, Smith is best known for its Series 28HE and 19HE steam and hot water boilers.