What defines a hydronic system?

A hydronic system is specifically defined as one that utilizes water as the primary medium for transferring heat. This allows for effective heating and cooling in various applications, such as radiant floor heating or traditional radiator systems. Water has a high specific heat capacity, which means it can carry a significant amount of thermal energy, making hydronic systems efficient for temperature regulation.

In terms of heating, the system typically involves a boiler that heats water, which is then circulated through pipes to deliver warmth. For cooling, chilled water can be circulated through the same pipes or separate systems depending on the design. This dual capability makes hydronic systems versatile for maintaining comfortable indoor environments.

Other descriptions, like systems relying exclusively on air or refrigeration cycles, do not accurately capture the defining characteristic of a hydronic system’s reliance on water for thermal transfer. Similarly, while hot water supply can be part of a hydronic system, the term encompasses broader applications beyond just supplying hot water, which distinguishes it from other systems focused solely on that function.