The answer to 'HVAC system short cycling' is that short cycling, where the HVAC system turns on and off rapidly, is usually caused by an issue with the thermostat, the compressor, or airflow issues in the ductwork. Symptoms include the system turning on and off frequently, inconsistent temperatures, and higher energy bills. Common solutions include replacing the thermostat, cleaning or replacing the air filter, checking for airflow blockages, and having a professional inspect the compressor and refrigerant levels.
If the short cycling is caused by a simple issue like a dirty air filter, this is something a homeowner can usually fix themselves. However, if the problem is with the thermostat, compressor, or ductwork, it's best to call in a professional HVAC technician to diagnose and repair the issue to avoid further damage to the system.