Why is my furnace leaking water and what steps can I take to address this issue?

Your furnace may be leaking water due to a clogged condensate line, a cracked heat exchanger, or a malfunctioning humidifier. To address this issue, you can try cleaning the condensate line, checking for cracks in the heat exchanger, or adjusting the settings on the humidifier. If the problem persists, it is best to contact a professional HVAC technician for further inspection and repair.