What type of boiler is most likely to require additional water treatment?

Watertube boilers are designed to operate under higher pressures and temperatures compared to other types of boilers, which can make them more susceptible to issues related to water quality. The design, where water flows through tubes heated by combustion gases, increases the likelihood of concentrating impurities and deposits that can affect performance and efficiency. Consequently, watertube boilers often require more rigorous water treatment protocols to prevent scale build-up, corrosion, and other water-related issues that could compromise their operation and safety.

In contrast, electric boilers and firetube boilers typically have simpler water treatment needs due to their different operating conditions and the nature of their construction. Vertical tubeless boilers, while they may require some treatment, generally do not operate at the same high pressures as watertube boilers, which limits the potential for problems that would necessitate extensive treatment. Therefore, the unique aspects of watertube boiler operation and the conditions it creates justify the need for more comprehensive water treatment measures.