FYI, this question is directly related to [this thread](https://www.reddit.com/r/explainlikeimfive/comments/hcqxo2/eli5_what_is_the_humidity_scale_in_reference_to/).
Fun fact from that thread regarding how humid and dry air effect cooling :
> Side note: when you use your car’s defrost function in the winter your AC will also turn on, as the AC will dry the air prior to it being heated which, in turn, warms up your windshield faster and with minimal condensation on the inside of the glass.
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