Customer concerned about unit leaking water from unit plenum. Check blower motor operation and inspected evaporator coil condition. Checked drain pan and drain line, located clogged drain line. Cleaned vacuumed drain pan and drain line. Treat with solvent and prime drain line. Suggest new drain line in garage under cabinets to and thru front exterior wall to front planter. Pvc Drain pipe and hole thru concrete.