The answer to 'why is my ductwork short cycling' is that your HVAC system is turning on and off rapidly, often within just a few minutes. This can be caused by a variety of issues, including a blocked or dirty air filter, a problem with the thermostat, or an oversized HVAC unit. Short cycling can lead to increased energy bills, uneven cooling or heating, and potential damage to your HVAC system over time.
If you notice your HVAC system short cycling, it's important to address the issue as soon as possible. Some potential solutions include replacing the air filter, adjusting the thermostat settings, or having a professional HVAC technician inspect your system for any underlying problems.