A quick overview of the topics covered in this article.
- Common Causes: Heater Alternating Between Blowing Hot and Cold Air
- 1. Thermostat Issues: Most Common Reason for Heater Alternating Between Blowing Hot & Cold Air
- 2. Clogged Air Filters: Second Most Common Reason for Heater Alternating Between Blowing Hot & Cold Air
- 3. Malfunctioning Flame Sensor
- 4. Ductwork Issues
- 5. Failing HVAC Components: Least Common Reason for Heater Alternating Between Blowing Hot & Cold Air
- Heater Is Alternating Between Blowing Hot and Cold Air: When to Call a Professional
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