After what major year did the use of the steam engine diminish significantly in fire fighting?

The use of the steam engine in firefighting saw a significant decline after the major advancements in internal combustion engine technology became widely adopted in the early 20th century. By the time the mid-1920s arrived, the efficiency and convenience of motorized fire apparatus had largely replaced steam-powered engines for urban firefighting. The transition was driven by advances in technology that allowed for faster response times, easier operation, and greater reliability of fire engines powered by gasoline or diesel.

This shift marked a significant era in firefighting history, as the introduction of motorized vehicles significantly changed the landscape of emergency response. Consequently, 1925 becomes a pivotal year where the steam engine’s relevance in firefighting had considerably diminished, indicating a clear transition toward the new technologies that would define modern firefighting practices.