Whole house fans are often used in summer at dusk to rapidly cool house. Air is sucked through house into attic, which also cools the attic. https://www.thespr

Whole house fans are often used in summer at dusk to rapidly cool house. Air is sucked through house into attic, which also cools the attic. https://www.thespruce.com/whole-house-fan-vs-attic-fan-differences-5114299 https://www.thespruce.com/whole-house-fan-vs-attic-fan-diffe... Crack open a window downstairs before switching it on.