Complete 1 system a/c repair and preventative maintenance check. Indoor; changed the filter and cleared drain line. Checked electrical connections, amp draw, and capacitor. Found the system has no water safety, and the gas sediment trap not up to code. All ductwork in the attic is also R6 and needs to be upgraded to R8 per code. Outdoor; cleaned condenser coils and checked refrigerant pressures. Checked electrical connections, amp draw, and capacitor. Recommend installing a compressor assist kit and surge protector to the outdoor unit. The unit is operating normally at this time.