On arrival system running and cooling but producing only a 12 degree s of cooling. Ideally we want 20 degrees but 12 will certainly struggle to cool home. Found blower and coil very dirty and restricting airflow and evaporator coil was rusted. Looking outside condenser was starting hard causing compressor to overamp and contactor was buzzing indicating electromagnet inside failing. Found condenser producing superheat of 27 when the target is five. This low refrigerant level is the cause for poor cooling. Only found intermittent refrigerant pings when leak searching evaporator coil and nothing at condenser. Recommended speaking with a co,fort advisor about replacement due to age and condition, will follow up with customer next Thursday to see if they would like our bid for a new system as they know they need to replace vs repair.