The answer to 'heat exchanger not working' is that a faulty heat exchanger is a common issue that can significantly impact the performance and safety of your HVAC system. The heat exchanger is a critical component that transfers heat from the combustion process to the air that circulates through your home. If the heat exchanger is not functioning properly, it can lead to inefficient heating, increased energy costs, and potentially dangerous situations.
Some common causes of a malfunctioning heat exchanger include corrosion, cracks, and general wear and tear over time. Symptoms may include reduced heat output, strange noises, or a yellow or flickering pilot light. In some cases, a cracked heat exchanger can even allow dangerous carbon monoxide to enter your home, which is a serious safety concern.