Im the AC advert, If its real. Take it. Take 2 Medea sold to many stores under Other names, an AC that had a Pull tab to open Venting to outside air. But upon looking into it, all it did was connect back into the fan section. It was in the paper work that it had Circulate, Vent, and exchange for the air. I complained and even took mine apart to show it. (true value) has the connection to lots of smaller Companies and to return it would have Put a Big dent in someone's pocket. I told them to Sue the company they got them from. Units dropped Price from $500 to $400 real fast.