The answer to 'ductwork short cycling' is that it is a common issue where the HVAC system turns on and off frequently, often due to problems with the ductwork. This can be caused by issues like leaks, blockages, or an improperly sized system. Symptoms include uneven temperatures, high energy bills, and the system turning on and off more often than normal.
To fix short cycling, you'll want to first check the ductwork for any leaks or blockages. Sealing leaks with duct sealant or mastic can help. If the problem persists, you may need to have a professional HVAC technician inspect the system and ductwork to identify and resolve the underlying issue. They can check refrigerant levels, clean the system, and ensure the equipment is properly sized for your home.