Was here for a 1st year furnace cleaning. Performed preferred customer furnace cleaning. Cleaned the burners and the flame sensor. Checked the furnace heat exchanger. Wiped out the inside of the furnace. Cycled the furnace. Checked the motors for proper operation. Performed a furnace combustion test. The furnace is running normally at this time. Checked the indoor coil for Freon leaks. Found indications of a possible leak in the indoor coil. Brought up the issue with the client. The client will wait to see how the air conditioner performs.