Tested and evaluated entire system. System is a 2 speed 4 ton Carrier with an FV series air handler. Checked refrigerant, running amps , static and temperature drop on indoor coil. The amount of water leaking from unit in video customer had look more like a water leak and not just condensation. System is working and not sweating profusely today. Other contractor replaced insulation in air handler about a week ago and may have already corrected problem. System thermostat is currently a NEST. This thermostat has no dehumidification control. ECOBEE will need to be installed is dehumidification control is needed. Cost for ECOBEE is $668. Some level of sweating will always occur as unit is installed in an unconditioned space in the attic. Recommendations to help minimize sweating . Do not set thermostat below 70 degrees. Use standard filters without pleats.