AC tune up refer to health inspection report. Indoor unit performing well there is a little sign of a previous water issue that had taken place but given current state it does appear like it’s an issue that has been resolved, it’s merely cosmetic at this point. Indoor unit is not protected with a surge protection device would recommend given its a warranty protection device. Outdoor unit performing well only concern is there is some contact buzzing/chatter coming from contacts when energized this can cause some issues with motors and capacitor if left unresolved but at the moment equipment is running. Outdoor unit much like the indoor unit and does not have surge protection this is a warranty protection device and helps keep equipment safe from electrical irregularities in grid system that can be caused by accidents, lightning strikes, or faulty problems with power grid equipment. There are no IAQ products in use these will help provide exceptional air quality and promote respira