Which statement correctly describes redundancy in a two-pipe hydronic system?

Redundancy in a two-pipe hydronic system means that there’s a backup mechanism in place to ensure that the system remains operational even if one component fails. This is particularly important in applications where heating or cooling must be consistently maintained, such as in commercial buildings.

When discussing individual zone control, redundancy allows for the capability to manage different areas of a facility independently. This means that should one zone experience a failure, other zones can still operate normally, offering flexibility and maintaining comfort levels in those unaffected areas. Each zone can be controlled independently for temperature and usage, enhancing the overall efficiency of the system.

Improving energy efficiency typically pertains to using the system optimally rather than having redundancy specifically. Continuous circulation is more about the flow mechanics of the water within the system rather than redundancy. Preventing boiler short cycling refers to operational efficiency concerning the boiler's functioning rather than the redundancy structure of the hydronic system itself. Therefore, individual zone control is the most relevant statement regarding redundancy in this context.