Case Study: Commercial HVAC

Seventh & Chestnut Associates and Waverly Management LLC

EVAPCO’s advanced cooling solutions help realize massive power savings and vastly reduced maintenance.

The 17-story, 380,000-sq-ft building was constructed in 1981


  • Find a long-term solution to outdated cooling infrastructure
  • Prioritize energy efficiency
  • Minimize maintenance
  • Controls to optimize operation of the entire mechanical system
  • Streamline water treatment


  • Two eco-ATWB-E closed circuit coolers
  • Factory-mounted Pulse-Pure® water treatment systems
  • Sage3 control system


  • Eliminated need for chemical storage and use in water system
  • Automated energy/water usage control, powered by the Sage3 control system
  • 75% reduction in annual energy use, equating to $24,800 in energy savings annually
  • Reduced monthly water consumption during the cooling season by 180,500 gallons
  • Overall annual cost reduction of $34,040 per year


After careful review of the building’s needs and guided by the owners’ interests in a long-term solution, Parmiter recommended replacement of the forced-draft coolers with induced-draft closed-circuit coolers, controls to optimize operation of the entire mechanical system, and water treatment.

The owners appreciated the fact one company, Evapco Inc.could provide all three.

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