Is hydronic energy renewable or nonrenewable?

Hydronic energy itself is not a standalone energy source; rather, it refers to the use of water to transfer heat, often in heating systems. The sustainability of hydronic energy depends on the source of the heat. If the heat is derived from renewable sources, such as solar or biomass, then the system can be considered renewable. Conversely, if it relies on fossil fuels, it would be classified as nonrenewable.