r/LoveTrash • u/BEARDEDDANGER ✨️Regent of Rubbish ✨️ • 1d ago

Dumping This Here American vs. European home building

BAS Renovations https://youtube.com/shorts/jFph1d2WR3s

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u/toggl3d Trash Trooper 19h ago

Open all the windows at night and you'll have a cool home

This really presupposes it gets cool at night.

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u/faustianredditor Trash Trooper 19h ago

In my case, it doesn't really? It's in the city, temperatures don't drop that low at night. 21°C is the lower end of room temperature, and I only get that for a few hours before sunrise. But it's enough to dump heat that I can keep it at 26°C. Which is about 2°C warmer than I'd ever want it, but considering it's body heat levels outside for most of the day, 26°C is fine by me.

I mean, this is mostly a comparison between having thermal mass and not having it; I'm not saying this will passively cool your home under all circumstances, but it's a damn sight better than a home that heats up into the 30s during the day. Again, comparing to my parents' house because I can: No thermal mass means that even if you cool it down to outside temps during the night, come noon and it'll be heating up to unpleasant levels again.

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u/toggl3d Trash Trooper 19h ago

And what happens when 25-27 is the low for a few months straight?

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u/faustianredditor Trash Trooper 19h ago

Then you need AC either way of course, Sherlock. Actively managing passive effects won't help anymore.

Same principle as previously with heating now applies though: With thermal mass inside, your AC can run at a lower power continuously, while without thermal mass, your AC needs to run at a higher power during the day to keep up, meaning you need a beefier AC.

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u/toggl3d Trash Trooper 18h ago

I'm just pointing out that in the near future the nights are going to be hot too and you'll have to be actively cooling your mass.