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Re:Home Office Projects Series: Air conditioner setup by jefftk on Thursday September 03, 2020 @03:28PM (#24367791)
> tremendously higher efficiency

For heat, yes, but not AC. For example, the Mitsubishi MY-GL12NA is a very efficient mini-split with an EER of 13, but a random modern window or through-wall unit (ex: https://amazon.com/dp/B07D8R2V8H/) will have an EER of ~12.

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