When was the last time you thought about your gas furnace? Not recently, right? Don’t worry—you’re not alone! Most people only notice their furnace when it stops working. But here’s the thing: upgrading your gas furnace before its last legs can save you a lot of stress, money, and freezing nights. Let’s break it down and see if it’s time for you to give your old heating system the boot. Signs It’s Time to Say Goodbye to Your Old Gas Furnace It’s Getting Up There in Age Gas furnaces aren’t like fine wine—they don’t get better with age. If yours is over 15 years old, it’s probably running at half the efficiency of newer models. Professionals say that after two decades, it’s not a question of if it’ll fail but when . Look out for: Uneven heating (some rooms feel like a sauna, others like an icebox). Loud, strange noises that make you wonder if ghosts are hiding in your vents. Energy bills creeping up faster than inflation. Energy Bills Making You Sweat Older gas furnaces guzzle fuel like...