William N. Sauer was born in old Allegheny, now the North Side of Pittsburgh on February 11, 1858, at the time city sewage systems were first introduced in the nation. It was a time of stress and change as America was still recovering from the Civil War. On his 18th birthday, he received a gift of $50 from his mother. He used it to start a small plumbing business – the foundation of the business known today as Sauer Incorporated.

In 1906 Bill Sauer met John G. Steitz, a young pump salesman from New York. These two men joined forces and began to specialize in large construction work. It soon became accepted practice to design the water supply systems of a building in close coordination with its heating system – leading Sauer Company into the heating field as well.

Sauer was incorporated in 1943. In addition to Pittsburgh, Sauer has offices in Columbus, OH and Jacksonville Florida and currently is engaged in providing services in Design/Build, HVAC, Process Piping, Controls & Instrumentation, Service, Equipment Erection & Rigging, Plumbing, Fabrication, Subcontracted Services and ASME Code work.

HVAC Technologies was founded in 1986 and it quickly grew to become one of the leading engineering and HVAC companies in the Carolinas.
In 2010 Sauer Building Solutions acquired HVAC Technologies and now brings to its ever-expanding list of satisfied customers the experience and knowledge of the entire Sauer Organization.