A building or room that contains the boilers used to heat a building or provide steam power for industrial operations.
Compound of 'boiler' and 'house' (from Old English 'hūs'). The term emerged during the Industrial Revolution as boilers became central to factories and large buildings.
The boilerhouse was the heart of the Industrial Revolution—every factory and large building had one where workers carefully maintained enormous boilers, since a breakdown could stop entire operations and even cause explosions.
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