Why Does My Furnace Keep Turning On and Off?
Short cycling occurs when your furnace kicks on, runs for a few minutes, and then shuts off, only to repeat the process again and again. While it’s normal for a furnace to cycle on and off to maintain your desired temperature, unusually short or frequent cycles often signal an underlying problem that needs attention. The most common causes of short cycling include restricted airflow from a clogged filter, thermostat problems, an overheating system, ignition or flame-sensing issues, or an improperly sized furnace. While you can check your thermostat settings or inspect the air filter, persistent short cycling is a warning sign. It may mean your heating system in San Antonio, TX needs professional repair. At , we know it’s a symptom you shouldn’t ignore. What Is Furnace Short Cycling? Furnace short cycling occurs when your heating system starts and stops repeatedly without completing a full, normal heating cycle. Instead of running for a consistent period to bring your home to the thermostat setting, the furnace shuts down prematurely. It then restarts a short time later, continuing this inefficient pattern. There’s no universal definition for a normal furnace cycle length. A cycle can vary significantly depending on the outdoor temperature, your...
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