Teardown of a $1.25 LED Lightbulb

Re:Teardown of a $1.25 LED Lightbulb by anchpop on Wednesday February 19, 2020 @01:16PM (#22368302)

> I imagine that heat is being generated less efficiently than a purpose-built device.

All the heat that comes out of a lightbulb is being generated at 100% efficiency :)

(Although it's likely more expensive to heat your home electrically instead of via natural gas)

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Re:Teardown of a $1.25 LED Lightbulb by mmcnl on Wednesday February 19, 2020 @02:41PM (#22369222)

Heat pumps have higher than 100% efficiency because they extract heat out of air / water. 100% is a very low efficiency for electric heating. Anything lower than 400% is considered below average.

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Re:Teardown of a $1.25 LED Lightbulb by BlueTemplar on Saturday February 22, 2020 @08:53AM (#22391000)

Sadly, heat pumps are still very rare. (They're much harder to do properly than just electric heating.)

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