Ancient Iran had air conditioning
https://lemmy.world/post/2083383

Ancient Iran had air conditioning - Lemmy.world
Cool, but a quick search shows that these towers can cool a place by around 10C. So, in the scorching 50C desert, the interior would be above 35C, which is still fucking hot.
A modern home ACs can only cool about 20f below the outside temperature. 50c to 35c is 27 degrees so that’s pretty damn good for a fancy swamp cooler
pretty sure 50c to 35c is 15 degrees
I wonder how he got his number, it makes no sense