Joliet Central High School, which serves about 2,800 students in a century-old, Gothic building that's on the National Register of Historic Places, recently got its HVAC system brought into the 21st century. The indoor air quality project took Joliet Central from steam radiator heat and outdated window-mounted air-conditioning units to a digitally controlled forced-air and VAV system and a two-pipe hot water heating system. While the ceilings were opened up for the ductwork, wiring for technological equipment used in modern-day education was also installed. This work also required the team to remove and relocate the sprinkler mains, branches and piping.
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