yeah not having the A/C could suck depending on where you live. My cousin is moving back to PA from texas, and he had a sweatshirt and jeans on, while I was wearing a tshirt and shorts lol it was only 50 degrees out.
As for fixing your A/C I dunno. All I know is, in PA you need to be certified to buy the A/C recharger. I guess if you screw it up you might be blow into chunks. (there's a vote of confidence for you

)