Responded to service call for 7-year-old natural gas furnace reported to be leaking water from the bottom. Conducted thorough diagnostic testing, including running the furnace for one hour and cycling the humidifier 12-15 times, with all components functioning properly and draining as designed. Inspection revealed no current water leakage or evidence of moisture inside the furnace; noted that previous water observed may have been related to the recently replaced water heater.