Hello guys i hope you can help me

i have 4 s9 antminer and 1 m21s whatsminer, and ill put them in a friends home.

there is a room with no windows. there was a hole for air conditioned, but now is sealed. but we can open it again.

is it better to just use one ac for cooling? or ducts to take out the heat?

the electricity at least for the moment is cheap, so for that part there is no problem.


also, what should be the potency of the ac?


thanks