Plus, the technician explained that the reason the heat exchanger cracked was because of dust accumulation within the system.
I recently dealt with a major furnace malfunction. When the system quit and I called for repairs, the technician informed me that the heat exchanger had cracked. The crack was too small for the human eye to detect. I assumed that meant it could be patched and fixed in some way. I was told that heat exchangers cannot be repaired. I then expected that the technician would simply replace the broken heat exchanger with a new one, the same way they way they replace every other part. I was again informed that this wasn’t possible. Apparently a new heat exchanger costs more than a whole new furnace. I was forced to tear out the entire heating unit and install a new model. Since my furnace was less than six years old, I hoped that the manufacturer’s warranty would at least cover some of the cost. However, because I’d failed to keep up with regular, annual service from a licensed professional, the warranty no longer covered the equipment. Plus, the technician explained that the reason the heat exchanger cracked was because of dust accumulation within the system. If I’d invested in maintenance every fall, the heating system would have continued to operate reliably for many more years. I have now learned my lesson. I spent a small fortune on a brand new, top-of-the-line, high efficiency furnace and as soon as it was installed, I signed up for a maintenance plan. For a small fee, the technician will come to the house every fall and handle the necessary cleaning, tuning and troubleshooting to satisfy the warranty requirements.