The answer to 'why is my ductwork' is that there are several common reasons why ductwork may have issues. This can include leaks, blockages, improper installation, or wear and tear over time. Symptoms may include poor airflow, uneven temperatures, high energy bills, and strange noises coming from the vents.
Many ductwork problems can be fixed with some basic DIY maintenance, like sealing leaks, cleaning out debris, or adjusting the ductwork. However, more complex issues like major leaks, damaged ducts, or problems with the HVAC system itself usually require a professional HVAC technician to diagnose and repair.