ArcBest, a multibillion-dollar logistics company in Fort Smith, AR, recently outgrew its headquarters. Designed for an occupancy level of 850 people, the headquarters has grown to 1,085 people plus visitors. Ten percent of the people work nights, requiring 24/7 conditioning of air.
The growth drove a need to introduce more outside air to maintain air quality. All of this outside air had to be conditioned, increasing electrical energy costs. In addition, the extra outside air caused draftiness on cold winter days, and during the summer the extra outside air flow through the air handlers resulted in some parts of the building getting too cool.