Comment on The interior of your house is hot, the exterior cool. What would the most efficient orientation be for a box fan? Pushing hot air out of a window or pulling cool air in through it?

rand_alpha19@moist.catsweat.com ⁨3⁩ ⁨months⁩ ago

The most efficient way is to force cold air into the space while also forcing hot air out. The best way to do this is to have maximum airflow from one end of the house to the other, often by opening all of your windows and using multiple fans to direct the air. Shouldn't really matter if the fan is outside or inside the window; an airtight seal around the fan should get you good results either way.

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