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?

eli04@linux.community · 7 hours ago

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?

_deleted_@aussie.zone · 7 hours ago

In our rental houses, we have always used foil on the north-facing windows (I’m in the southern hemisphere) in summer. Leave a window open an inch or so to allow air flow, but also open a window on the other side of the house so you get a draft from the cooler side to the hot side. Sometimes nights can be cooler; if that’s so, open as many windows as possible at night to cool the house, and close them again before sunrise.