A furnace's heat exchanger is often the most expensive component to fix or replace. This crucial component isolates the combustion process from breathable air. Cracks or damage to the heat exchanger pose a severe safety danger by enabling carbon monoxide to enter the home. Repairing or repairing a heat exchanger necessitates specialized knowledge and can be expensive due to the labor-intensive nature of the task and the high cost of the part. Regular maintenance helps to prevent heat exchanger problems