In many commercial and industrial environments, temperature control systems like chiller units, evaporative coolers and split AC units are essential to staying operational. Many overlook that these systems rely on water. If the water is not treated, it can become a breeding ground for harmful bacteria, corrosion, scale build-up and system inefficiencies.
At Rapid Energy, we understand that keeping your systems running smoothly is not just about the equipment, but it is about safeguarding the conditions in which they operate. That is why water treatment is more than just a maintenance task- it is a business-critical responsibility.
Why Water Treatment Matters
Cooling systems that use or recirculate water, especially those operating between 20°C and 45°C, create the ideal conditions for the growth of Legionella bacteria, which can lead to serious illnesses such as Legionnaires’ disease. In environments where people are exposed to aerosolised water droplets, such as those from cooling towers or evaporative units, the health risks become significant. However, the risks do not stop there.
Untreated water can also lead to:
- Scale deposits that reduce thermal efficiency
- Biofilm build-up that harbours bacteria and clogs components
- Corrosion that damages system parts and shortens equipment life
- System downtime due to inefficiencies or failures
Water treatment helps to protect both your equipment and your people. It also ensures compliance with health and safety regulations while preventing reputational damage or legal consequences.
Cooling Systems That Require Water Treatment
1. Chillers
Process cooling and comfort cooling chillers rely on efficient heat exchange. Without proper treatment, scale and microbial growth can hinder this exchange, driving up energy costs and reducing cooling capacity. Routine water sampling and chemical dosing are essential to maintain consistent performance.

2. Evaporative Coolers
Evaporative coolers use evaporation to cool air, making them particularly vulnerable to airborne bacteria like Legionella. Continuous water monitoring, regular disinfection and system cleaning are vital to reduce health risks and extend unit lifespan.


3. Split AC Units (Water-Cooled)
While less water-intensive than large chillers or evaporative systems, water-cooled split AC units still require protection from internal scaling, corrosion and microbial contamination. Regular treatment ensures they remain efficient and compliant, especially in sensitive environments like healthcare or manufacturing.


The Risks of Neglecting Water Treatment
Failing to treat water properly puts your entire operation at risk. A single outbreak or contamination event can lead to:
- Costly emergency repairs or replacements
- Unplanned operational downtime
- Fines or prosecutions for non-compliance
- Reputational damage from adverse publicity
The true cost of neglect is not measured just in parts or repair hours, it is measured in lost productivity, compromised safety and eroded trust.
How to Stay Protected
Partnering with a water treatment provider ensures your cooling systems receive tailored solutions that meet regulatory requirements and operational needs. Key services should include:

Rapid Energy’s Temporary Cooling Solutions
Rapid Energy provides fast, reliable, and expertly engineered temporary cooling solutions for critical commercial and industrial environments. Many of our systems rely on water for cooling, which requires proper treatment to prevent issues like scaling and microbial contamination.
Our water-based products include a wide range of chillers, from 4kW units to 760kW systems, designed for industrial and comfort cooling. We also offer evaporative coolers, perfect for large spaces like warehouses and event venues, as well as water-cooled split AC units for environments where traditional air-cooled systems aren’t feasible. Regular water treatment is essential to maintain efficiency and prevent damage.