When it opened in 1972, Jordan Hall on the campus of the University of Virginia (U.Va.) in Charlottesville, Va., was a premier research facility. Nearly 40 years later, the HVAC infrastructure of the seven-story, 250,000-sq-ft building, home to the U.Va. School of Medicine, no longer could be maintained and was prone to regular failures. Experimental product and data were being lost, and operating costs were spiraling out of control.