Heating, Ventilation and Air Conditioning (HVAC) are provided to tenant premises from 7:00 A.M. to 6:00 P.M., Monday through Friday, and from 7:00 A.M. to 1:00 P.M. on Saturdays. All other times, including Sundays and Holidays, are by special arrangement. Questions on the rate for after-hours HVAC and all requests for such service should be directed to the Management Office.
Temperature Maintenance

  • The Building's mechanical design is based on an all-electric system. Four main fan systems circulate ventilation air to and from all office spaces. Electric heating coils, in conjunction with the perimeter ventilation system, provide heat. A central Centrifugal Chiller plant provides cooling for air-conditioning.
  • Fan Power Boxes, located above tenant ceilings, modulate the volume of ventilation air into tenant space. They always deliver a minimum volume of outside air but have a variable volume metering capability far in excess of the minimum for space cooling purposes. All building perimeter office spaces are equipped with air duct mounted electric heating coils which can provide heat when outdoor air temperatures warrant, typically when outside air temperature is below 50 degrees.
  • Each fan power box, whether serving interior or perimeter office space, is controlled by a wall mounted thermostat within the tenant space. Fan power boxes with heating coils, serving perimeter office space, are controlled by dual temperature set-point, night set-back thermostats. In the heating mode, these thermostats are set to maintain space temperatures in the low 70's during weekday daytime hours. They shift to maintain 55 degree heating temperatures between 6:00 P.M. and 7:00 A.M. on weekdays and on weekends.
  • The central cooling plant typically is operated when outdoor air temperatures are above 55 degrees.
  • At this temperature, cooling usually can no longer be provided by flushing larger volumes of outdoor air through the building. Under this circumstance, the chillers are started to provide supplemental cooling to the air stream that is being circulated to office space through the variable air volume system.
  • Although the building is equipped with a computer based temperature control system, inevitably, at times, space conditions may not achieve tenant comfort. To resolve these instances, a staff of trained Operating Engineers is always available to investigate and correct temperature related comfort problems. Their services can be requested by contacting the Management Office at 312-917-1177 or through the use of 360 Facility Service Request System.

After Hours Heating or Cooling (HVAC)

Arrangements for overtime HVAC should be made at least 24 hours in advance through the Management Office at 312-917-1177. If it is not known ahead of time that HVAC will be needed, arrangements may be made by either calling the Management Office or by requesting HVAC through 360 Facility Service Request System.

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