Which term describes a heating system that uses heated water or steam to transfer heat to spaces?

Which term describes a heating system that uses heated water or steam to transfer heat to spaces?

• A. Hydraulic distribution system
• B. Forced-air system
• C. Hydronic system
• D. Electric radiant system

Answer: (C)

Hydronic systems use heated water or steam circulated through a network of pipes to deliver heat to spaces. The boiler heats the water or generates steam, which is moved by a pump through radiators, baseboard units, or radiant floors, and heat is transferred to the room as the fluid gives up its energy. This approach relies on the liquid medium to carry heat, providing precise temperature control and often quiet operation. In contrast, forced-air systems rely on heated air moved by ducts, and electric radiant systems generate heat directly in place via electric elements. Hydronic describes the method of heat transfer specifically through water or steam, which is why it’s the correct term here.

Hydronic systems use heated water or steam circulated through a network of pipes to deliver heat to spaces. The boiler heats the water or generates steam, which is moved by a pump through radiators, baseboard units, or radiant floors, and heat is transferred to the room as the fluid gives up its energy. This approach relies on the liquid medium to carry heat, providing precise temperature control and often quiet operation.

In contrast, forced-air systems rely on heated air moved by ducts, and electric radiant systems generate heat directly in place via electric elements. Hydronic describes the method of heat transfer specifically through water or steam, which is why it’s the correct term here.