Table of Contents
- Thermostat Settings Issues
- Pilot Light or Ignition Problems
- Clogged Air Filters
- Dirty or Malfunctioning Burners
- Leaky Ductwork
- Insufficient Gas Supply
- Overheating Furnace
- Faulty Heat Exchanger
- Electrical Problems
- Aging or Failing System
- Troubleshooting Tips
- The Importance of Professional