>>11820306It's not quite impossible for you to create an AC unit without exhaust, but you need to have a heat activated endothermic chemical reaction, or a large heat sink.
Think of a u shaped tube going deep into the ground, pulling heat out of the room, then on the other side of the room the outlet tube is recirculating the same air that has been cooled by the ambient lower temperature of the soil.
The ground acts as a heat sink here that doesn't get too hot because you engineered it correctly for the size of the room and the heat within it.
TADA no exhaust "ac" unit.
