Performed routine maintenance on a 1998 Goodman heat pump split system for the mini side and a 2013 carrier heat pump split system for the main side. During inspection found the carrier system running slightly low on refrigerant pressures indicating there is a leak. I did check all motors amps and capacitors . The condition of the evaporator coil on the carrier system is pretty rough. Visual inspection of the coil did not show any leaks at this time. Customer is going to monitor the system and let his home warranty company know if there’s an issue. The 1998 is doing all I can do. Motor amps, refrigerant pressure , and capacitors are ok though the system overall is not in good shape and should be replaced if any issues come up .