How often should you blowdown a boiler with no chemical water analysis?

Blowdown frequency for a boiler without a chemical water analysis is typically recommended to be once daily. This practice helps prevent the accumulation of impurities and sediment in the boiler water, which can lead to operational issues such as poor heat transfer, scale buildup, and potential system damage.

By performing a daily blowdown, the internal water chemistry can be maintained more effectively, ensuring that unwanted contaminants are removed regularly. This routine is generally considered adequate for most systems to maintain water quality while balancing the need to conserve water and reduce waste.

While more frequent blowdowns, such as every hour or every 6 hours, might be suitable in certain conditions—like when working with very dirty water or high-contaminant scenarios—these could lead to excessive water usage and increased costs if applied without necessity. Therefore, a daily schedule provides a practical balance between maintaining boiler health and operational efficiency.