We started with a 1925-era high pressure steam system in their landmark Gothic style building on Michigan Avenue. Converting the system to low pressure included analysis, survey and data logging to determine a reduced steam load. Modeling of the existing high-pressure system was accomplished, and modifications were proposed to reflect the new capacity and lower pressure.
A complete new, drastically reduced in size, low pressure steam boiler plant was installed. Phased construction allowed steam to be available during the conversion. The project resulted in a three-year payback, due to a 38% reduction in annual gas use, significant operational labor savings, and a large utility incentive bonus.