If you knew how much energy goes into air conditioning large buildings you'd be horrified!
I still have large shopping centres were we don't have economy cycles on the air handlers, ie the outside air dampers don't open at a set temp and RH to get free cooling!
And heating in a sub tropical area is still electric re-heat. I'm talking hundreds of kw of heaters. (we are quoting reverse cycle chillers, but the total cost will go over 7 figures)
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