ELI5. If an electric heater is not 100% efficient. Where is it losing its energy?

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Ok I get that some heater are more efficient at heating an area, person heater over space heater etc.

But sometimes
The efficiency gets quoted. And other than losing energy at heat (which seems fine) how else do they lose energy?

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11 Answers

Anonymous 0 Comments

They don’t. Usually, tools that use electricity ‘waste’ energy by generating heat, such as a light bulb or LED light where you want to produce as much light as possible with the least amount of heat as a byproduct.

But since heat is what you are looking for, having it ‘waste’ 100% of the energy is what you want, and it’s not difficult to achieve.

Technically, a tiny bit of energy escapes through some infrared light generated by the heat escaping the room, and maybe if you have a fan attached to the heater to blow the air around it doesn’t count as 100% efficient.

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