Service Call Platinum Client Customer was concerned about the operation of their air cleaner and humidifier. Verified air cleaner is functioning properly. Humidifier I was able to put into test mode to verify mechanical operation but the humidity in the house is higher then the range of operation on the humidistat, so I cannot say if the humidity sensor is running accurately. If the humidifier is as old as the furnace is then that would make it 17 years old so the sensor may very well be drifting.
