I put foil insulation on some of my bigger windows in the summer. Especially southern facing windows (in northern hemisphere). That mixed with tons of fans and the occasional cold towel when needed helps tremendously.
this post was submitted on 27 Jun 2025
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move to Alaska?
Didn't say if you own the home or not, but if so:
Mind it's only hot for 2-4 months out of the year for me, so I have a winterized attic fan. Just means I'm not losing heat in the winter and paid a little more to buy it. You can just get a regular attic fan if it's never or rarely cold where you live.
You leave windows open, but now there's negative pressure from pushing air out the attic where a lot of the heat is trapped and sucking in air from outside even if there's no breeze. I leave the attic access hole open when it's running. The rare day I still use a Window A/C to sleep.
Not really a thing you can just do, but thick walls. I live in an old house with double layered exterior brick walls. It has such a massive impact that sometimes I wear a vest inside, while it's heatstroke temperatures outside.
Sleep outside, if you have a space. Get a deck umbrella, a mosquito net and a cot and a sleeping bag (actually on super hot days I used to just sleep on a towel). It's so much cooler than trying to get by indoors with no AC, even with fans. And it's rather pleasant.
Just get AC, it works so well for de-humidifying too.
But otherwise blackout curtains can help a bit but also radiate heat themselves.