How to Tell When Your Furnace is Not Operating Well!
Scale: Flakes of rust, produced by the by-products of burning gas (Carbon dioxide and water vapor). Scale may fall on the burners and impede gas flow. Over time, it can damage your furnace by harboring moisture, thereby fostering rust on a large scale. Your service technician can take out the burners and clean them. You can clean out excess rust flakes that fall to the bottom of the furnace housing.