In 2015, Indiana University Health engaged CMID to optimize the energy usage on their recently acquired Gateway building located at 950 N Meridian Street. The Gateway is a 12-story mixed use office building that was built in 1988. In 2013, the pneumatic heating, ventilating and air conditioning (HVAC) controls were replaced with Honeywell Spyder® digital controllers and a Niagara AX based supervisor. The building has 24 main air handlers, 10 supplemental air handlers, and approximately 350 variable air volume boxes. All heat supplied to the building is electric resistance heat, and the building has 3 chillers and a dry cooler to provide chilled water for mechanical cooling year-round.
Since work began in February 2015, improvements on the building include: reprogramming all VAV boxes to improve airflow distribution, especially minimizing air flow when spaces are at the correct temperature; modifications to the static pressure at the air handlers to minimize fan usage; and repairs to the make-up air handler heater to improve outdoor air flow to the building.