The answer to 'ductwork not heating' is that there are several common causes, including leaks in the ductwork, blocked or dirty air filters, problems with the HVAC system, or issues with the thermostat. Symptoms may include uneven heating, cold spots, or the HVAC system running constantly without reaching the desired temperature.
Some potential solutions include sealing any leaks in the ductwork, replacing air filters, cleaning the HVAC system, and checking the thermostat settings. However, more complex issues like malfunctioning HVAC components or major ductwork problems may require the expertise of a professional HVAC technician.