I have an AC problem. Heat comes out the AC Dash Vents. I need help!

What is your question?

The AC vents blow heat. I have noticed that when the outside air temp is below 80 degrees or less I can get some cool air. At one time it only blew out hot air when the car engine was hot but no more all has changed. I have changed the Compressor, had the AC system vacuumed out and recharged. I replaced the accumulator AC switch, also the AC relay. The compressor works fine & is fully charged, air blows out all vents blower is good, all fans work, dashboard controls work. I just cannot get cold air. Anyone have any answers. I was wondering if the heater blend door actuator or some other vent door might be stuck. Help, Help, Help I'm roasting in this car the drivers side window don't work, my newest problem.