Hi all, I’m wondering if there’s a good, comprehensive guide for properly maintaining an AC after heavy use throughout the summer. I drive my 2014 Prius about 6 hours a day, 5 days a week, with 75 - 95 degrees F heat throughout the season. I have the AC consistently cranked at the lowest setting. I am pretty much a beginner. I know you can check if the system even has Freon in it by pushing the tab in the engine compartment with a pen. Any other tips? What do those AC refresher kits do?