Post #3737637
2026-07-11 10:21 UTC
It's interesting that some people say "oh but you shouldn't use AC, it makes the outside even warmer"
but they never say
"you should never use shutters, if you don't let in the heat it makes the outside even warmer!"
Modern heat-pumps typically move at least 8x as much existing heat than they generate by performing the work of moving that existing heat,, so that's only around 10% in addition.
The two cases are roughly 90% the same.
Replies (2)
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@pettter@social.accum.se 2026-07-11 10:39
@szbalint@mastodon.social What are you even talking about?
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@varx@infosec.exchange 2026-07-11 12:27
@szbalint@mastodon.social It's an interesting idea, but a few things to consider: - AC is expending on average, what, ~300W additional energy into the environment? If an AC and a set of awnings kept two identical houses at the same temperature, the AC would be strictly worse. - Houses exhibit the greenhouse effect. Solar energy that you bounce off the house may be re-radiated into space, while photons that enter the house are almost 100% converted to thermal energy. - ACs often bring houses below the no-AC ambient temperature, while shutters/awnings merely prevent houses from rising above it.