ac problems

[n00b on demand]

So everyone knows about my hesitation issues with the defroster or air conditioning on. Well those problems have gone away ever since i dropped in my K&N filter. But now I have an even bigger issue....i turned on my a/c for the first time on sunday because the temps were in the 80's and it was blowing out hot air. I dont even think its working because I didnt even notice the idle rising a little like it should. At night when the temperature cooled down i put it on auto to see if it would work and the air blowing out was a little cooler but nothing drastically better. The a/c worked pretty well last year but I didnt use it that often because of my hesitation problems. I actually bareley used it...only really came into use in the winter when i needed defrost action. I guess I should do the climate control trouble shooting thing. Man this really sucks....its starting to get really hot too