Closed Loop Water Treatment Services

R2J provides closed loop water treatment services that protect system efficiency, equipment lifespan, and water quality in chilled water, hot water, and glycol systems. We help facility teams prevent corrosion, minimize water loss, and maintain system stability across HVAC and hydronic applications.

Why Closed Loop Water Treatment Matters

Closed loop heating and cooling systems are critical for delivering reliable heat transfer across HVAC, hydronic, and process equipment. While they recycle the same water—unlike open loop systems—they’re still vulnerable to chemical imbalances, corrosion, and system fouling. Without proper treatment and monitoring, closed loops can silently lose efficiency and damage key infrastructure.

Risks We Address in Closed Loops

• Oxygen ingress that causes internal corrosion
• pH imbalance that damages piping and heat exchangers
• Underfed or degraded inhibitors
• Stagnant water in low-flow zones
• Glycol breakdown or incorrect concentrations

R2J’s Closed Loop Treatment Approach

We tailor every closed loop water treatment to your system volume, material makeup, water quality, and usage pattern. Our closed loop services include:

• Chemical cleaning and pre-treatment during system commissioning
• Corrosion inhibitor programs for steel, copper, aluminum, and mixed metallurgy
• Glycol testing and correction for chilled water and freeze-protected loops
• On-site water testing for pH, conductivity, inhibitor residuals, and metals
• Periodic lab analysis and detailed reporting
• Troubleshooting for corrosion, slime, or discoloration
• Remote monitoring for critical system points (optional add-on)

Types of Closed Loop Systems We Treat

• Chilled water loops
• Hot water heating loops
• Dual-temperature systems
• Glycol loops (ethylene or propylene)
• Dedicated process or equipment cooling loops

Warning Signs of Trouble

• Discolored water or rust-colored samples
• Rapid inhibitor loss or high metal concentrations
• pH trending below 8 or above 10
• Increased strain on pumps, valves, or heat exchangers
• Unexpected leaks or corrosion at welds and joints

If you’re seeing any of these, or if your loop hasn’t been tested in the past 6–12 months, it’s time for a review.

Routine Testing = Long-Term Savings

Maintaining proper chemistry in a closed loop system prevents long-term damage and reduces total lifecycle cost. R2J provides consistent lab testing, on-site measurements, and remote monitoring to help you avoid unplanned downtime and chemical overuse.

Learn more about our Remote Water Treatment monitoring programs

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Need Help with Your Closed Loop System?

From schools and hospitals to industrial plants and high-rises, R2J supports closed loop systems across Florida with the testing, treatment, and documentation you need to stay protected.

Contact us today to schedule water testing or request a proposal.