Signs Of A Cracked Or Damaged Furnace Heat Exchanger

Although you may not be familiar with the component, your propane or natural gas furnace's heat exchanger is one of the most critical components of the HVAC system. The heat exchanger is the largest component of your furnace, and it is the job of the heat exchanger to transfer the heat created by the combustion of the gas or propane to the exterior parts of the unit and then into your home.