I kinda knew that some automakers ran the compressor for that reason during defrost, but I didn't know about it during other heat modes. Will the compressor run all the time, or does it only run long enough to to reach a predetermined evap temp? Maybe I got a little antsy and didn't run long enough for it to cycle. What happens when the ambient is really cold? Does it still come on? I pulled a wire on the drier so it wouldn't run till I found out, figured it wasn't helping fuel mileage much if it wasn't needed.
Another question....I noticed that the supply vent in the tail end of the console blows cold air all the time. Really cold when the compressor is connected. What controls that?