The Department of Energy, through ORNL UT-Battelle LLC, is seeking proposals for the design and installation of a Large Scale Environmental Chamber (LSEC) at the Oak Ridge National Laboratory in Tennessee. The chamber will operate with a capacity of 60,000 to 300,000 BTU/hour and must simulate a wide range of temperatures, featuring a stacked configuration with specific dimensions for both upper and lower chambers. This facility is crucial for advancing research in energy and environmental testing, particularly for commercial rooftop units and building envelope technologies, ensuring compliance with industry standards such as ASHRAE 37. Interested suppliers are invited to a site visit on December 5, 2024, to assess the space and participate in a Q&A session, with proposals due by the specified deadline. For further inquiries, potential bidders can contact Laura Hyden at Hydenln@ornl.gov or call 865-341-4201.