economizer

Noun

Meaning

One who, or that which, economizes.

Specifically: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney.

Source: Webster's dictionary

economiser reducer saver conservation saving economist deliverer cheapskate retrench sparer pinchpenny penny-pincher conserver salvager economization

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spender prodigal rip rake expander spendthrift

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saver

stinter

economic economy economics

In both cases, the outside air must be less energetic than the return air for the system to enter the economizer mode. Source: Internet

Some systems include an "economizer mode", which is sometimes called a "free-cooling mode". Source: Internet