Which of the following are components of a steam heating system?

In a steam heating system, the essential components include a boiler, pipes, radiators, and steam traps.

The boiler is vital as it generates steam by heating water, which is then distributed through pipes. These pipes transport the steam to radiators, where it releases heat into the surrounding space. This process effectively warms buildings through the radiators. Steam traps play a crucial role as well; they are designed to remove condensate and air from the system while allowing steam to pass through, ensuring efficient operation and preventing water from returning to the boiler prematurely.

The focus on these four components highlights the importance of the steam generation, distribution, and heat release processes in a steam heating system. Other options, while they may relate to different heating or cooling systems, do not fit the specific components necessary for a steam heating system setup.