Upon arrival inspected return insulation. Found lining partially falling off. Secure insulation with adhesive spray and aluminum tape. Ran and test system operation. Listen to noise issues. None, normal operation. Check temperature split supply 52.3 F degrees return temp 74.8 System is left operational @ this time. View visual findings from this job here - https://visionshare.xoi.io/?id=XA-A3D0-151ACCDC6D574E3F98B4F1D2CAE6A80F