The transfer fluid in a hydronic system must be compatible with what?

In a hydronic system, the transfer fluid, commonly water or a water-antifreeze mixture, must be compatible with makeup water for various reasons related to the system’s efficiency and longevity. Makeup water is used to replace water lost due to evaporation, leaks, or maintenance, and it is essential that the transfer fluid does not react adversely when mixed with the makeup water. If there are incompatibilities, it could lead to corrosion, scaling, or the formation of harmful deposits within the system, which can impair functionality and reduce the lifespan of the components.

Additionally, choosing a transfer fluid that is compatible with the makeup water ensures optimal thermal transfer properties and maintains the overall balance of chemical properties in the hydronic system, crucial for performance and reliability. Overall, compatibility with makeup water is crucial for maintaining system integrity and efficiency over time.