There is no "set your temperature at." That is a myth. You set the temp so the room does what you want. It depends on room size, where the airflow goes, how high in the wall, lots of factors. Let's say one wall is up against some trees stays pretty cool. Let's say you have big exposed windows on the S/ W side. you will have a cool side and a hot side. You just have to play with it until you get things comfortable.
One thing to watch out for, is not ice up the evap. Keep the filter clean.
Jimmy Carter and his 68 degrees was full of crap. Most these big buildings have automatic changeover from heat to cool. This means that if you set the stat to 68, yeh, "it saves" on heating, but IT THEN TURNS ON THE AC needlessly.
l don't like it all that cold at home, and I'm not real active, normally, in the house. If it gets up to 75--76 that is fine with me.
