My AC is not really blowing cold air. All works (fan, etc, etc), but the air is not really cold. Could this be lack of freon? (not sure if this cars still have this). A local gas station wanted to charge me $200 to check and charge freon on the system. I said no, of course.

If it is something else (not sure what else could it be), would this be covered by the CPO?

Thanks.