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Currently live in Colorado where the highs are regularly in the 90s. Turn the house fan on at night for a couple hours, cool everything off, then close all the doors and windows during the day and everything is perfectly comfortable. When I lived in Philly however... 90% humidity and 80 degrees AT NIGHT is no joke.

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So to respond, yes I generally suggested the above for dry climates, I have also lived in humid climates and agree to all the comments regarding them. However I am willing to bet we use electrical heat pumps out of sheer convenience even in climates that offer alternatives. That having been said, even for humid environments, the ground often offers us solutions that are more efficient. https://en.wikipedia.org/wiki/Ground-coupled_heat_exchanger They do however ofcourse require engineering and support from society to adopt.

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