Make Your Aquatic Facility Lean, Green

[Tip #6:  The use of electrolytic chlorine generators (salt systems) is gaining momentum, partly because it is non-toxic and offers safe handling. The sizing of these systems includes volume (gallons), average water temperature, presence of cyanuric acid, bather load, direct sunlight/UV exposure, surrounding vegetation and airborne debris, chemical dilution from source water, and filter turnover and circulation patterns.]


More and more aquatic facilities employ the use of controllers and chemical analyzers because they assure greater bather safety. The audit team should inspect the systems, making sure the probes are clean and accurately measure the chemical parameters.

Over time, these systems, if not calibrated, will send false messages to the chemical-feed pumps, rendering water conditions that may be over- or under-sanitized or not balanced correctly

[Tip #7: Chemical controllers and chart recorders can monitor chemical usage and send a message to the facility’s “operation control room,” alerting the pool operator of unsafe water conditions. These analyzers offer not only safety to the facility but oftentimes lower the chemical usages by accurately adding chemicals as needed without human error. It is advisable to perform manual water testing at least once daily to ensure calibration with the analyzer.]

Writing An Action Report

After all the systems have been analyzed, including a thorough review of the usages and costs, a comprehensive action report can be achieved. The report should indicate which areas of the facility need to be modified or renovated to reduce energy consumption. Recommendations for installation of new equipment and payback time should be included. P

ayback is important to owners. It gives the amount of time it will take to recoup the investment based on energy savings. The audit team should demonstrate how much is currently being spent compared to what is saved.

These compelling data may help encourage facility owners to upgrade to more efficient equipment. The audit team should research current energy-rebate programs offered by various municipalities, and present these rebates in its savings report.

Boosting the bottom line for any aquatic facility in today’s recessionary climate is critical to keeping many doors open for the public. Lowering energy costs and finding greater efficiencies throughout must be the goal for a healthy facility in the long run.

It is valuable to look at the existing facility and examine all costs before making a quick decision to modify.  To be successful in assessing a facility, the audit team must do its homework, calculate the energy savings and the life cycle of the systems, assess the annual maintenance costs, and compare the return on the investment.

Connie Sue Centrella is a professor and Program Director for the online Aquatic Engineering Program at Keiser University eCampus. She is a five-time recipient of the Evelyn C. Keiser Teaching Excellence Award “Instructor of Distinction.” Centrella is an industry veteran with over 40 years experience in the pool and spa industry. She is a former pool builder with extensive knowledge in pool construction and equipment installation, as well as manufacturing.


Facility Energy-Audit Form Checklist

√ Original construction and engineering plans

√ List of any modifications or renovations

√ Manufacturer equipment manuals

√ Copies of 12-month invoices on electrical, gas, and water

√ Type of structure, interior surfacing

√ Pool volume, surface area, and special water features

√ Lighting (external fixtures, type and number)

√ Interior lighting (type of fixture and wattage)

√ Air-quality system (ventilation and heat recovery)

√ Electrical sources

√ Filtration/circulation equipment

√ Number of pumps, HP, phase, and rating capacity (gallons per minute)

√ Filter type, sand-replacement intervals

√ Vacuum-gauge and pressure-gauge readings

√ Heating equipment and energy source (BTU output)

√ Water and chemical treatment

√ Chemical analyzers and controllers

———————————Sidebar 2———————————

Become A Certified Aquatic Energy Auditor

Conducting an audit is the first step to improving energy efficiency. The Online Certified Aquatic Energy Auditor (CAEA) course from the National Swimming Pool Foundation is designed for aquatic professionals to audit and recommend energy-efficiency solutions and improvements. In this course, you will learn:


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