Open the air handler to check the evaporator coil. Clean the air conditioner coil. Cleaning will not fix the problem if there is a refrigerant leak. This should only be repaired by an HVAC technician.

a leak in the evaporator releases only refrigerant vapor. A clogged drainage channel is a common cause of water in the front foot wells.

Poor airflow from blocked air filters can often cause the evaporator coil to freeze over ... often suggests the possibility of a refrigerant leak,' Traci adds. If the problem is a refrigerant ...