I have a downdraft forced air furnace. attached to the bottom I have installed a Scuttle humidifier. it has been running for a few years I think I am seeing mold in the furnace air box. How can I mtigate this?
Lysol Spray will help. Are you sure it is mold? Seems odd it would grow in a warm dry furnace airstream..... Is there a leak or some other source of moisture in there?