this post was submitted on 15 May 2025
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They're noisy because they are inefficient. But still more efficient than any ceiling fan
It's probably both noisy and inefficient if it's made really cheap, but is that causation true?
Not really comparable since ACs change the air temperature, while fans just move air.
The real reason they are noisy is the only thing between you and the compressor is a sheet of metal.
I don't know how you measure efficiency but if you measure the amount of energy required for each degree of apparent temperature dropped then a fan is way way more efficient.
efficiently doesn't raise my energy bill :/