What is the reason for maintaining proper pH levels in boiler water?

Maintaining proper pH levels in boiler water is crucial primarily to prevent corrosion and scaling in boiler systems. The water's pH level impacts the chemistry within the boiler. When the pH is too low (acidic), it can lead to corrosive conditions that can damage metal components, resulting in leaks or other failures. Conversely, if the pH is too high (alkaline), it might promote the formation of scale, which can insulate heat transfer surfaces and decrease efficiency. Proper pH control creates an optimal environment that protects the integrity of the boiler materials, ensures safe operation, and maintains efficiency. This is why monitoring and adjusting the pH of boiler water is a key aspect of boiler maintenance.