“Comfort Bear, why are you clutching that furnace?” you may be asking. Well, you see, this furnace has been with me since the very beginning. And now, I’m suddenly being told that I have to replace it!

We’ve been through some intense winters together. In return, I vowed that I’d always be there for it: through all of its maintenance checks, through all of its repairs, every time it fails to start, even during that one time it triggered the carbon monoxide alarm…

Well, okay, maybe I’m being a bit sentimental. I guess it’s time to let go. When I think about it objectively, I suppose there are a lot of good reasons for knowing when to replace your furnace: