Closed Loop Water Treatment Services

Typical heating or cooling systems include three types of loops: a chilled water loop, a refrigerant gas loop and a cooling tower water loop. These types of closed loop systems are susceptible to leaks that can lead to contamination-forming corrosion and bacteria in the cooling water that may ultimately cause a total system failure.

Chardon Laboratories can provide effective chemical treatment for closed loop systems that can prevent leakage and other troublesome issues from occurring. Our ISO-certified technicians can perform a wide range of services that will keep your closed loop water cooling system operating at peak efficiency, while also minimizing the risk of extensive damage.

Our Closed Loop System Treatment Services Include:

  • A Free Survey to determine the current system status and needs
  • Prevention of corrosion, scale and other microbiological growth
  • Cleaning & Flushing
  • Corrosion Coupons
  • Regularly scheduled testing a treatment through a customized chemical treatment plan
  • Continued maintenance at a steady and consistent annual price
  • All treatments administered by ISO-certified technicians to ensure system longevity

Read on to find out all we can do for you!

technicians can perform services to keep your closed loop system operating at peak efficiency

This includes minor preventive maintenance steps such as changing filters, pH and conductivity testing as well as complete cleaning and flushing, replacement equipment and much more.

Other Methods for Preventing Corrosion in Closed Loop Water Systems

Chardon Labs implements a number of effective techniques for preventing corrosion. We work with the dissolved solids within the system,to render the water less aggressive, and thus, less corrosive. We accomplish this by utilizing the various proprietary chemicals to treat the water.

We also eliminate corrosion by maintaining the optimal pH level in the loop water within the noncorrosive range. This can be achieved by adjusting the pH with various chemicals. Controlling the pH will also help with problems associated with iron.

In closed looped systems that have no exposure to air, the best way to minimize the risk of corrosion is removing oxygen from the water. This will slow the spread of corrosion on metal surfaces. The implementation of the proper water treatment chemicals removes oxygen, thereby reducing the risk of corrosion.

Another method we employ for preventing corrosion is the use of compounds that form protective films on closed loop system surfaces. These chemicals will protect and passivate metallic surfaces.


Cincinnati, OH

"Chardon is the best. They do good quality work and keep up quality service. Thank you for the good job."

School District

Barlow, KY

"Don’t change a thing!! Hey, the tech even brings us chicken biscuits sometimes!!"

Aluminum Die

Grand Rapids, MI

"Great company to work with. Very responsive to customer concerns."


Columbus, OH

"The technician that comes out has been great at alerting me of things to watch for as well as answer my questions. I love it that you email me my report."

Retirement Community

Managing Director

"I have been extremely happy with the service provided by Chardon Laboratories. Domonic has been very helpful with all aspects of our systems, especially concerning Cooling Towers. My hope is that we can continue to keep working together for a long time!"

Loop Treatment Professionals

large closed-loop tank and tube systems

Your closed loop system is just as susceptible to malfunction as any open system. Undiagnosed leaks permit air to enter the system, allowing for corrosion and bacteria to begin contaminating the cooling water.

diagram of the pump, filter chemicals, and heat exchanger in a closed-loop system


How Chardon Helps

Filters must be changed regularly, and pH and conductivity must be tested to prevent corrosion and deterioration of components to allow for adequate heat transfer efficiency. Your closed loop may be corroding from the inside out and you might not even know it. A proper flush and regular testing of the loop water is required to ensure the longevity of the entire system.

Contact Us today to request a free evaluation of your closed loop system and find out the potential savings you could missing out on.



“We don’t sell chemicals, we sell clean systems.”


Chardon Labs is a NSF Certified Water Treatment

But My Plastic Injection Mold Loops System Has A Closed Loop; Why does It Lose Water?

ASHRAE defines a “closed loop” as a system that loses less than 10% of its volume annually. Most plastic injection mold loops lose significantly more than 10% of their volume when mold tools are changed.

Figure out how much water your mold tools hold, then multiply that volume by the number of mold changes you make each year.

Add in cleaning and flushing of the water attachment manifold (you do flush the water manifold before connecting the new, clean mold, right?) and any other cleaning and maintenance practices that include water replacement.

Multiply that number by ten and compare it to your system volume.

Water Treatment Equipment For Closed Loops

Closed loop systems, while theoretically should not require much attention or equipment, are still prone to corrosion and leaks caused by a multitude of factors. Depending on the metal composition of the loops in your system, the pH of the water, as well as the dissolved solids, could have a corrosive effect on the piping.

Using equipment such as a pH probe or different kinds of filtration (bag filters, centrifugal separators) could help prevent these corrosive problems in closed loops. Other equipment could include any biocide feeder or shot feeder system to prevent damage from microbiological growth and fouling in the loops.

Contact us today to receive a quote on any of the closed loop equipment we carry!
Learn more about Filter Feeders.

Contact Our Closed Loop Water Treatment Company to Learn More

Contact Chardon Laboratories to learn more about chemical treatment for closed loop systems and our other effective treatment solutions today.

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