08/27/2026
Do you know if the furnace in your house is the original one, or has it already been swapped out at some point?
Most homeowners genuinely do not know, and that is worth fixing. A furnace usually has 15 to 20 goodyears in it, so whether yours is original or a replacement changes the whole picture of how much time you have left.
You do not need to go anywhere near it to figure this out. Check your closing paperwork or home inspection report if you still have it, most list appliance ages. Or just think back: was there ever a permit, an invoice, or a receipt taped inside a drawer somewhere for "new furnace installed"? A lot of home shave one tucked away.
Tell us in the comments: original to the house, or replaced at some point? If you are not sure, guess. We will help you figure out what it means either way.
Comment "original" or "replaced," and roughly what year if you know it. We read every one.