Arrived at customers residence and was greeted by the customer and was led to the thermostat and itnis functioning properly at this time. Inspected 20x25x1 filter and it is clean at this time. Inspected tape and duct work joints and they are tight and neat and without any visible defects at this time. Refrigerant lines are tight and neat and Arma flex insulation is intact and without any visible defects at this time.`inspected emergency shut off switch and it is functioning properly at this time. Inspected condensate drain and it is clear at this time. Inspected gas line and it is tight and neat and is within code specifications at this time. Inspected manual shut off valve and it is functioning properly at this time. Electrical connections are tight and neat to the components and wire nut connections are tight and neat and without any visible defects at this time. inspected evaporator coil and it is clean at this time. Leak checked evaporator coil found heavy rust and decay and found