24000BTU air conditioner.
4200W power for 48 GPU+ mobo.
The room seems cool. No any heat problem so far. I feel cold air in the room.
But i fear if any type of hardware failure hot air and cold air in the same room.
I dont want to use ventilation system. I want to use AC.
Should i send the cold air directly to the rigs ?
i use wall mounted split AC.
It's not necessary to point the cold air direct to GPUs, but there's no specific problem of doing this if you want
It's better if you study the air flow of your room with your rigs and make the best choice with your air conditioner
The only problem to GPUs and board in general is to blow cold air if the board is too hot, but it's for long time, can do some micro ruptures on solder, but I don't see this problem in your room and rigs
So make some tests and watch the temps, no problem