Gangreless 65 points 3 years ago

A modern home ACs can only cool about 20f below the outside temperature. 50c to 35c is 27 degrees so that's pretty damn good for a fancy unpowered swamp cooler

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manillaface 25 points 3 years ago

What’s your source for this? It routinely gets over 100 here and buildings aren’t 80 degrees inside.

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sab 14 points 3 years ago

We're talking celsius, I hope for your sake it doesn't routinely get to 100 C where you are. :)

Edit: The user actually said 20 F, I got confused by the mix of units. "50c to 35c is 27 degrees" didn't make sense to me, but I figured I'd let it slide. No idea what's going on here. :)

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argh_another_username 3 points 3 years ago

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Dark_Arc 14 points 3 years ago

They're full of it, that's it. Maybe in their house which lacks sufficient insulation. Heat pumps (i.e. air conditioning) are/is extremely efficient at moving heat around, there's not really a practical limit on it, particularly if you go geothermal.

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ezmack 3 points 3 years ago

20 degrees is just a rule of thumb most ACs have a specific temperature change they're designed to do. You can go past it, that's just what the intented to do and it might not work as well or be able to do it. Fwiw I'd always heard 30 degrees farenheight for most window units. Had an hvac guy explain it to me years ago but fucked if I remember how it works

E: not sure why I'm getting downvotes this is like a very common thing. Google it https://frederickair.com/...

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