11/13/2025
At ACEC Tennessee's 2025 Engineering Excellence Awards in Nashville earlier this week, OGCB's work on the First Horizon Headquarters Chiller Replacement was recognized with an Honor Award for Building/Technology Systems. The design sought to replace the two original water chilling machines (installed in 1964) with new chillers. The project preserved chiller plant capacity redundancy, coordinated with the existing plant's medium-voltage electrical service, staged installation to avoid disruption to chilled water production, integrated with existing chilled water piping, and provided a solution for future chiller removal and replacement.
OGCB thanks our design team, including partners at Burr & Cole Consulting Engineers, the construction team at CS3, and our client, First Horizon National Bank.