The answer to 'why is my HVAC system leaking water' is that there are several common causes, including a clogged condensate drain line, a problem with the condensate pump, a refrigerant leak, or a cracked condensate pan. These issues can lead to water accumulating and leaking from your HVAC system.
Some key symptoms to look for include water pooling around the indoor unit, water dripping from vents or registers, and musty odors. Solutions may involve cleaning the drain line, replacing the condensate pump, repairing refrigerant leaks, or replacing the condensate pan. While some minor issues can be DIY-fixed, it's generally best to call a professional HVAC technician to properly diagnose and address the root cause of the leak.