We think of #AirConditioning as a way to cool things, but it actually produces three sources of warming on the outside of whatever you're trying to cool:
it's a heat pump, transferring thermal energy from whatever you're cooling, to the outside
there's waste heat from the operation of the machine, and
if the AC is powered by energy derived from fossil fuels, the generation of that energy increases greenhouse gases in the atmosphere and thus exacerbates global warming.
h/t to a post on #Lemmy that made me think about this and iron it out in my head
This isn't to say don't use it at all, but it does mean that it's prudent to think about how we can use less of it, because using it literally contributes to making the surroundings hotter.
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