I'm pretty sure that isn't it. Especially since it re-cools itself at any temp adjustment I make. I just had it recharged last year and it was fine all year.
Living in Michigan, we don't use our air conditioners much
Just because you had it charged doesn't mean it isn't low again. You could have a slight leak somewhere.
2011 Mitsubishi Lancer GTS - DD mode
1991 Mitsubishi 3000GT - Many mods to come