Originally Posted by Just a Salesman
Split AC = No ventilation - Same room air being recirculated within the room. It is like being in a car with the AC on and vent off permanently.
Box AC = Has a ventilation switch - Can intake fresh air from outside.
Whosoever invented the split AC forgot about a ventilation option.
If there was no Split AC in the non-ventilated room but only a ceiling fan, the suffocation will be the same.
Whosoever build such rooms forgot to install windows.
Window ACs are proper units and always better than Split ACs!