Complete 2 system a/c repair and preventative maintenance check.No cool upstairs system. Check and find system frozen due to low charge. Melted ice of coil and find coil badly rusted and leaking. Find the air distribution box molded. The system has no water protection in the attic. Due to system age and poor conditions suggest to upgrade system but customer wants to recharge system for now. Recharge with 2 lbs of r22 and install starter kit. Upstairs system operating at this time.