On arrival, technician found that the gas line had been taken off of the hanging unit heater. Perhaps someone was attempting to hook up their own heater to gas line. Anyways, after reconnecting gas, the technician began diagnostic and found that the draft inducer assembly was not functioning. Technician was able to manually spin motor shaft and yet the heater operating however, the motor is failing and will fail again. Estimate will be provided to the customer for draft inducer assembly replacement.