So i went to get my a/c refrigerant checked the other day and found out that it was good, but the car still blows hot air. the guy looked it over and told me that my heater was stuck on and was heating my a/c coil or something along those lines. if anyone has ever had this problem, i'd like to know how to go about fixing it, if it's something i can do or if i need to take it to someone. a/c isn't a must for me, but if it's a cheap fix, i'd love to have it. thanks.