Advocate Health Care

Administrative Facility, Infrastructure Improvements

Administrative Facility, Infrastructure Improvements - Suburban Chicago


Also known as the SRCO facility, this healthcare administration building is a single-story, 110,000-square-foot structure that started life as a warehouse and had previously been converted to office space. The boiler replacement and RTU project was a continuation of prior infrastructure improvements.


G/BA has helped Advocate with multiple improvements and troubleshooting projects at this building, and assisted in infrastructure changes when the client repurposed the office facility in 2013. In 2018-19, the firm helped Advocate create a new heating hot water plant to replace an existing steam plant. An existing chiller room was repurposed to accommodate the new equipment. Replacement of four older rooftop air-handling units with new packaged RTUs was also part of the scope, which encompassed design-phase, bid-phase, and construction-phase services.

Hot water plant features included:

  • Prepurchase of three natural-gas-fired hot water condensing boilers (2,000 MBH each) and associated double-wall flue vents. One of the new boilers was temporarily installed in the existing boiler room as a backup to the steam boiler during construction. It was later relocated to the new plant area.
  • Three primary hot water pumps with VFDs.
  • Associated piping (hot water supply/return, natural gas) and temperature controls.
  • Hot water chemical treatment system.
  • Roof-mounted exhaust fan for summer ventilation of the new boiler plant, and a hot water unit heater to condition a storage room (created by repurposing the old steam plant area after the plant was removed) in winter.

Features of the RTU installation included:

  • Analysis of airflow, and removal of existing packaged VAV units and associated piping and ductwork. A rental AHU and temporary connections were provided to condition the building during construction.
  • Four replacement packaged VAV rooftop DX AHUs with a gas-fired furnace.
  • Supply and return ductwork.
  • Associated natural gas piping and drain lines.
  • Controls integration.