Flozone Services was called to address HVAC water treatment at NES
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Flozone Services was called to address HVAC water treatment at NES

In 2003, with a recommendation from an engineer representing Gresham Smith & Partners, Flozone Services was called on to address the HVAC water treatment needs of NES. There was active corrosion in the tower basin and hot wells. The strainers required regular cleaning by on-site personnel. Also, the multi-stack chillers could not function as designed due to previous water treatment issues.

After Flozone was installed, NES began to see increasingly longer time spans between strainer cleanings and commented that the towers could last another 5 years if necessary with the new chemical-free water treatment program. Flozone Services’ Integrated Management Program provided NES with substantial utility & maintenance savings over the life of the contract.

In 2008 Flozone Services, Inc. introduced E3 Sentinel, in conjunction with our Integrated Management System (IMS), the E3 Sentinel offers our customers enhanced 24/7 monitoring of their HVAC system.  As part of our comprehensive service, the IMS can monitor your chillers and cooling towers to maximize the efficiency of your HVAC system.

We are pleased to report Nashville Electric Service’s water/sewer, energy, and chemical reduction savings.

Project Profile

Nashville Electric Service

Nashville, TN

500 Tons HVAC Cooling

Sq Ft per Ton 540


2018 Results:

  • Energy savings $6,035
  • kWH consumption reduced 80,741 kWH
  • kW Demand reduced: 121 kW
  • Water & Sewer savings $26,584
  • Water & Sewer consumption reduced 1,527,437 gallons
  • Total Water, Sewer and Electric savings $32,619
  • Eliminated condenser water chemicals: 484 gallons
  • Carbon Footprint reduced 56 metric tons
  • Excellent corrosion rates are verified by corrosion coupon analysis by a third party.
  • Chiller efficiency increased from 85% to 95+%
  • Annual inspections of chillers reveal clean tubes and do not need brushing.
  • Long term savings in the extended life of equipment is increased due to the absence of harsh chemicals previously used.

 Total Facility Savings with Flozone Services Since February of 2016


Water & Sewer Reduced 16,073,919 gallons
kWH Reduced 1,670,873 kWH
kW Demand Reduced 44,454 kW
Condenser Chemicals Reduced 8,850 gallons
Carbon Footprint Reduced 1,219 metric tons


Maintenance & Extended Mechanical Life Savings $180,563
Water & Sewer Expense Savings $318,757
Energy Expense Savings $148,350
Total $647,670