How do I find out what year my furnace is?
How do I find out what year my furnace is? Your furnace should have a sticker located someplace on the exterior or interior paneling. If you don't see a sticker with the model and serial number on the outside, find where the paneling opens up and check if it's located inside that door. Write down—or take a photo of—the serial number for reference. Where is the serial number on a furnace? The model and serial number can be found on the rating plate on the inner wall of your furnace or air handler. A dealer should be involved in accessing...