I had no record of professional service, so the manufacturer’s warranty was voided and didn’t cover the cost
I’ve realized the importance of keeping current with furnace maintenance. I tended to forget to clean the air filter. I always neglected to schedule professional service in the fall. I’d allow the air filters become completely filthy due to dust and dander. When I noticed a burning smell in the house, I figured this was to be expected during the startup process. I was unhappy about high energy bills but took any measures to improve efficiency. When my gas furnace abruptly quit, I finally scheduled professional repair. The HVAC professional took the furnace apart and pointed out contamination within the inner workings. The level of dust buildup was surprising. The technician explained that this accumulation was restricting airflow. Because the full amount of heated air wasn’t getting supplied to the rooms of the house, the furnace needed to run longer and work harder to achieve comfort. This needless wear and tear caused the system to overheat and shut down. The overheating resulted in a tiny crack in the heat exchanger. I’ve learned that the heat exchanger prevents carbon monoxide and other combustion byproducts from contaminating the breathing air of the home. The furnace can’t run without it. A heat exchanger costs more to purchase than an entire new furnace. I had no choice but to upgrade the furnace. Neglecting annual maintenance cost me a great deal of money. I ended up replacing a furnace that was only five years old. I had no record of professional service, so the manufacturer’s warranty was voided and didn’t cover the cost. I’ve now signed up for a maintenance program with a local HVAC dealer. They remind me to schedule a service appointment every fall.