Prepaid maintenance on a 2011 Rheem heat pump split system. During inspection found unit operating normally at this time though there are several issues to look into. I have sent pictures through email to show the damage. The evaporator coil on the inside of the air handler is in pretty bad shape due to heavy corrosion . The filter dryer and the muffler one is external and then one is internal are both in pretty bad shape due to corrosion. I don’t see any active leaks on the system ,it is operating within spec. Ultimately recommending replacement due to future breakdowns and the cost associated with said breakdowns . corrosion the both units are experiencing will cause a leak in the very near future. We are getting a 17° split between the supply and return. This is not going to get better due to the damage the system has taken from corrosion and also the efficiency that has been lost over time . If you would like to speak to somebody about possible replacement on the system ,please