Performed 1 system diagnostic for unit serving main and basement level. Found pan full of water dirty blower, filter extremely dirty ,evap coil dirty, contactor with slight pitting, no te standard water safeties. Unit failure was due to lack of maintenance and regular filter changes. Also had condensate drain clogged causeing water to backflow and fill the pan. Customer opted for cleaning the blower, basic evap cleaning and drain line cleaning only. No warranty on cleanings. They also have current drywall and painting being done at this time. Unit is operational at this time. Filter size is 16x20x1 The bare minimum basic repairs to get the system running today.