I've had my E150 for a few years and the back has always had issues with the AC but recently the front has completely gone. The heat still works great but when I try to turn the air cooler it doesn't get any colder than the air outside, even with it at full blast. I used some AC pro to try to recharge it last summer and that helped for a while but now all I get is warm air.

 

Tell us what you did to add the recharge, because you may need to do it again.