Hydronic systems are closed loop systems in which water is circulated and heated, driving out almost all dissolved oxygen. In these systems the water does not change state into steam so scaling isn't a typical concern. The treatment of these systems is simple and done only on the rare occasion the system is dumped and refilled. During normal operation chemical levels are monitored with small adjustment doses required infrequently.
Steam system treatment is more dynamic. You have to deal with higher temperatures, boiling off water leaving solids in your boiler, constant water losses and makeup and condensate returns.
The life of your steam boiler depends upon 3 legs of proper treatment care:
Without proper water treatment your steam boiler doesn’t stand a chance. You will find more information on proper care in our Steam Boiler Water Treatment Guide.