Our assessment encompassed over 684,000 square feet of building space. The audit included photo documentation, HVAC zone documentation, lighting modeling, water use modeling, building simulation, and life cycle cost analysis.

Multiple opportunities were identified to significantly reduce energy use in the Thomas Jefferson Library of Congress Building. The most significant energy savings opportunity was associated with the installation of a new digital control system, to correct and improve many of the existing deficiencies with the existing pneumatic control system that are attributing to poor control of the building. A project was developed as an incremental ECM to replace the existing induction units with a two-pipe fan coil system. This project was recommended when the existing induction system was scheduled to be replaced. At the time of replacement, the net present value was based on the difference in price between the existing system and the upgraded fan coil system and resulted in increased energy savings for the building.