Cooling Tower maintenance

Cooling towers are key components to cooling in large commercial and industrial HVAC systems. This blog post will explain how cooling towers work and three key maintenance tasks to ensure your HVAC system runs smoothly.

HOW DO COOLING TOWERS WORK?

Cooling towers use evaporation to cool down hot water from industrial processes or air conditioning systems. Hot water is pushed into the cooling tower, then sprayed onto fill material in the tower. The fill material increases the surface area for the water to be sprayed onto and, in turn, the exposure to air. When it passes through the fill material, the air evaporates the water, which results in a cooling effect. The cooled water recirculates back into the HVAC system, and the cycle repeats. The following diagram is a visual representation of how this process works.

While cooling towers are typically dependable and long-lasting, regular maintenance ensures optimal performance and prevents breakdowns. Here are three tips for ensuring your cooling tower will run smoothly and, in turn, reap the benefits of a fully-optimized HVAC system.

Tip 1: Regular Cleaning

Regular cleaning is one of the most critical maintenance tasks for commercial cooling towers. Dirt, debris, and biological growth can accumulate on the tower’s fill, drift eliminators, and water distribution system with everyday business operations. This build-up will decrease efficiency and increase the risk of corrosion and microbiological contamination. Commercial and industrial facilities should schedule maintenance at least twice a year. In locations with elevated levels of airborne contaminants or biological activity, cleaning should be done more frequently. It is beneficial to schedule a professional cooling tower maintenance company to help ensure your tower is comprehensively cleaned and disinfected.

Tip 2: Water Treatment

The longevity of your cooling tower system largely depends on the water that passes through your HVAC system. Water treatments are vital to keeping your cooling tower running efficiently by eliminating contaminates that pass through. Cooling tower water is exposed to environmental factors that can lead to the growth of algae, bacteria, and other microorganisms. Without proper treatment, these contaminants can cause corrosion, blocking, and contamination, reducing heat transfer efficiency and raising the risk of equipment failure.

By monitoring the water quality and getting treatment by a commercial HVAC technician, you can prevent scale build-up within your cooling tower. Monitoring and servicing reduce failures and extend your cooling tower’s life and efficiency.

Tip 3: Inspect and Replace

Components such as fans, motors, belts, and bearings are subject to wear and tear and can fail over time. Regular inspection and replacement of worn parts can prevent unexpected downtime and reduce repair costs. In addition, upgrading to more energy-efficient components can help reduce energy consumption and operating costs.

Krauss Company has partnered with Discovery Sound Technology to make routine inspections more accurate and straightforward. Using ultrasound technology will give you precise and quick analytics, limiting surprise failures and downtime.


Cooling towers play a crucial role in cooling commercial and industrial HVAC systems. Regular cleaning, proper water treatment, and inspecting and replacing parts will increase the life and efficiency of your entire HVAC system. A routine maintenance plan with a professional HVAC company helps take the guesswork out of optimizing and caring for your facility. Are you interested in learning more about our maintenance plans?

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