The answer to 'why is my ductwork leaking water' is that there are a few common causes, including condensation buildup, a clogged condensate drain line, or a problem with the HVAC system itself. Condensation can form on the inside of the ductwork, especially in humid climates, and leak out. A clogged condensate drain line can also cause water to back up and leak from the ducts. Additionally, issues with the HVAC system like a refrigerant leak or malfunctioning components can lead to excess moisture and water leaks.
If you notice water leaking from your ductwork, it's important to address the issue quickly to prevent further damage. You may be able to resolve minor issues like a clogged drain line yourself, but more complex problems will likely require the expertise of a professional HVAC technician. They can diagnose the root cause and make the necessary repairs to stop the leaks and ensure your HVAC system is functioning properly.