this post was submitted on 25 Jun 2026

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Am I going to reduce a room’s temperature covering a huge hopper window with either paper or reflective aluminum foil, but leaving the window a bit open when the sun shines directly into the window? (linux.community)

submitted 3 days ago by eli04@linux.community to c/asklemmy@lemmy.ml

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I need an air current in this room, even when the sun shines directly into it.

I was thinking covering the hopper window with either paper or reflective foil and leaving it a bit open, but I don’t know if this is a stupid idea.

A closed window means an unlivable room.

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[–] Korhaka@sopuli.xyz 3 points 3 days ago

Reflecting the sunlight away will reduce the heating you get from the sun. As far as opening a window or not, open if outside is cooler, else close.

If it's pretty windy then it may be worth opening the window if the temperature is similar.