An engine house is a building or other structure that holds one or more engines. It is often practical to bring engines together for common maintenance, as when train locomotives are brought together.
Buildings that housed a steam engine on a mine, used for pumping, winding or stamping. Many of these have survived in Cornwall, England, for example at Crown Mines.
House-built engines, where the engine is the house. A house-built engine is a large beam engine where the engine house itself forms the frame of the engine.
The term "engine house" is also used, widely in the United States and perhaps elsewhere, to mean: