Leak search on air conditioner Inspected outdoor condenser and found no leaks. Removed indoor coil and inspected coil. Found no leaks. System might of not had enough run time to move the UV dye through the system as the UV dye was added to the system very late in the air conditioning season. Asked customer to run air conditioner for a couple hours per day when it is 15 degrees Celsius outside. Will need to return to perform another leak search. Did find water under the blower motor in the furnace compartment. Removed blower and found the secondary heat exchanger leaking. Made customer aware that the heat exchanger will need to be replaced. Gas to unit is shutoff and customer is aware they will not be able to use the heat until heat exchanger is repalced.