homeassistant

I've tried both approaches, even some in/some out, etc.

It really depends on the space, as box fans can't generate much pressure differential so their effect tends to be pretty localised.

In my current space I've found using outward in a specific window works best for overall cooling for the rest of the house overnight, but that room has a markedly higher temp.

If that fan is inward-facing, that room is 5-10 degrees (F) cooler (than using outward), again overnight.

Now if you can get a fan that handles pressure differentials (e.g. a compressor fan) then it's a different game.

Overall I've found a combination of inward/outward to work best (I suspect because of the weak pressure differential of box fans), so targeting a consistent air flow velocity is what works for them.

Could be worth trying

One advantage of sucking air In from outside is that that causes it to pull itself tight against the mosquito net, so it's less likely to fall over.

The knob connects to the controller, and the controller treats that as a command input.

So that part just works.