There are some things you own that you may replace well before they fail on you. For instance, you might replace your smartphone with the latest and greatest model primarily to take advantage of the camera. You replace your furniture even though it’s still in decent shape just to get a better color or upholstery.
However, there are some things you don’t tend to replace until they’ve completely given out on you. This includes home systems like the garbage disposal, clothes dryer, and, unfortunately, the furnace. We think it’s a mistake to wait this long to replace your heating system though.