![](/static/253f0d9/assets/icons/icon-96x96.png)
![](https://lemmy.ml/pictrs/image/d3d059e3-fa3d-45af-ac93-ac894beba378.png)
If you put the fan right in the window, it’ll suck the air right back inside around the fan. If you put it farther away the air stream has distance to widen and pull in more air. That way you can get the air stream to “cover” the whole window, Not allowing any to flow back in through that window.
Wait what did I miss?