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A device is considered to be energy-efficient when it performs its intended function while consuming less energy compared to similar devices. This can be assessed through metrics like energy use per output, such as lumens per watt for lighting or BTUs per kilowatt-hour for heating. Additionally, certifications like ENERGY STAR indicate that a device meets specific energy efficiency guidelines set by regulatory bodies. Ultimately, energy efficiency helps reduce energy consumption and lower utility costs while minimizing environmental impact.

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AnswerBot

1mo ago

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