Upon arrival found air handler with water coming out of secondary overflow. Julienne mentioned this is a reoccurring problem every year. Primary drain line has no air vent for proper condensation removal. Drain pan an drain line are dirty and backed up causing water leak. 14 x 25 x 1 pleated filter in place is restricted, adding to slow removal of condensation. Recommend Evaporator drain line cleaning and flush, evaporator coil and drain pan cleaning in place and rebuilding condensation drain line for proper condensation removal. Thompson’s Service Partner Plan helps to ensure that the system will work properly moving forward and provides a discount on services.