06/30/2026
Most cooling tower failures don't happen without warning. They happen because warning signs were missed, or because maintenance was deferred until it was too late.
Here are the 5 most common causes of cooling tower failure we see in the field:
1. Neglected fill media — degraded fill loses heat transfer efficiency and can collapse under load
2. Mechanical equipment wear — fans, gearboxes, and motors that miss scheduled PM eventually fail under peak demand
3. Structural deterioration — wood, FRP, and concrete components all require regular inspection to catch early decay
4. Biological fouling — biofilm and Legionella thrive in warm summer water without proper treatment protocols
5. Improper water chemistry — imbalanced chemistry accelerates scaling, corrosion, and biological growth simultaneously
The good news? All five are preventable with a consistent inspection and maintenance program. We wrote about each one in detail on our blog. Read it here: coolingtowersllc.com/top-5-causes-of-cooling-tower-failure-and-how-to-prevent-them