A heat exchanger should last many years. But, due to the nature of furnaces and how they work, they’re not going to last forever.
As the metal expands and cools over years of usage, the metal may begin to crack and break. When this happens, it can create a dangerous situation in your home and it needs to be fixed immediately.
Some signs of an issue with the heat exchanger are a change in the flame colour, soot buildup, discoloration in metal, carbon monoxide in your home, strong odours, condensation, and much more.
If you suspect your heat exchanger is compromised, call John The Plumber immediately.