[BigTzElement]

Sounds like your coolant charge is starting to drop, given the age of you E that is mostly normal.

This is blatantly wrong information. A/C systems are closed systems and should NEVER need routine charging. If the system is low on refrigerant then there is a leak in it somewhere and that is never normal.

Do you think it just needs a A/C service because it's low on freon?

No Element has or uses "Freon".

Freon is not synonymous with refrigerant.