New air handling units, fire suppression, and smoke exhaust system have been installed in the Capitol, and are part of the efforts to address dangerous life safety issues and bring the Capitol up to code. These new air handling units will provide cooled and heated air to the spaces that need it. The pipes will supply heated and cooled water from the central utility plant that then will be turned into the hot air. Prior to the restoration, the existing heating, ventilation, and air-conditioning (HVAC) system was comprised of equipment and distribution systems that had exceeded their useful life and failed frequently, damaging the building fabric.
The big ductwork is for the new smoke exhaust system that connects to the blue smoke exhaust fans. Prior to the restoration, the Capitol didn't have smoke evacuation or fire suppression systems.