Temperature control sucks 40 percent of a typical building’s energy use. While daylighting and fancy windows on the Bullitt Center decrease the need for heating and cooling, there are still energy needs.
For those the building relies on an in-floor radiant heating/cooling system. Twenty-six wells full of a glycol mixture drop 400 feet below the soil where they are heated or cooled by the relatively constant soil temperature—a setup akin to the system in the rear of a refrigerator. The system offers a significant energy savings—Bullitt will use 83 percent of the heating energy of a typical commercial building.