The answer to 'ductwork not working' is that there are several common causes, including blocked or damaged ducts, leaks in the ductwork, and issues with the HVAC system itself. Symptoms may include uneven heating/cooling, high energy bills, and poor indoor air quality. Solutions can range from simple DIY fixes like sealing duct leaks to more complex repairs that require a professional HVAC technician.
If the ductwork is blocked or damaged, you may be able to clear the blockage or make minor repairs yourself. However, if the issue is with the HVAC system or there are more significant duct problems, it's best to call in a professional HVAC technician to diagnose and resolve the problem.