Furnace Maintenance for Aging Furnaces: Stay Safe

Is Your Old Furnace Keeping a Secret? It’s 6 a.m. in January. The wind chill is somewhere south of −20°F, and your furnace kicks on with that familiar rumble. It’s been doing this for 17 years. So it’s fine, right? Maybe. But here’s the thing. An old furnace doesn’t usually quit with a bang. It […]