Hi Eduardo, I tell you first, the cold does not exist, it is the absence of heat. Therefore, known this, the air conditioner removes heat from the room to be cooled. The refrigerant gas when circulating through the indoor unit absorbs heat and moves it outwards with the help of the fan. And so the cycle repeats. This topic is quite extensive and exciting, but I tell you so to be brief and understand. I hope I have removed the doubt ... greetings and appreciates the answer