boilerhouse

From boiler +‎ house.

boilerhouse (plural boilerhouses)

1. A building containing a boiler.
   • 2004, Andrea Levy, chapter 23, in Small Island‎^[1], London: Review, page 244:

     I had to collect up all the scrawny dead birds with their swollen blind eyes, throw them into a barrow and take them to the boilerhouse for burning.

2. (nautical) The deckhouse above a ship's boiler and engine room.

• boiler room