back boiler

A 'back boiler' is a heating device installed behind a fireplace or stove to provide hot water and sometimes central heating.

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Definition

(technical)A heating device placed behind a fireplace or stove to supply hot water and sometimes central heating.

The back boiler in the living room fireplace heats the entire house and provides hot water.
They installed a back boiler to make their heating system more efficient.

Terms that have similar or relatively close meanings to "back boiler":