ford fusion a/c blows hot air only

Could be plenty of things. A/C condensor that was damaged from road debris. A/C compressor that failed. A leak in the system. You need to get the system pressure tested and troubleshoot.

I had the same problem I put a towel on my dashboard in the center to try to keep the evap sensor cool It seems from what I read that he gets to hot and makes the ac blow hot air in very hot weather It worked for me I got in my car with the temp outside being 90 degrees plus and the air was cold was warm at first but cooled after a few minutes of driving I think that keeping the sensor semi cool made the compressor work properly.