The Hamilton County Courthouse experienced temperature fluctuations due to inefficient steam heating equipment, prompting window opening and electric heater use. The outdated system was replaced with a new combined heating and cooling system that features independent room controls, eliminating window air conditioners.

Renovation was contracted to McIlnay & Company on July 1, 1989, for $182,411. Delays occurred due to asbestos removal and electrical service issues, along with inadequate foundation support for the boiler. The project was completed on May 11, 1990, with a final cost of $193,434.