Your furnace may be leakingwater due to a problem with your AC, a clog or leak in the condensate line, or a leakinghumidifier.A leakinghumidifier. We’ll explain each of these causes in more detail below. Need a professional to give you an exact estimate for your furnace repair? Why Your Conventional (Non-Condensing) Furnace Is LeakingWater. Even though you have a non-condensing furnace, the root of the waterleakage will still be condensation. However, there could be 3 different sources of the condensation: Leakyhumidifier. A leakinghumidifier is a nuisance and can cause a lot of damage. Try these troubleshooting steps to solve the problem.1. Keep in mind, in order for humidi... Expert guide to furnaceleakingwater causes including condensation issues, clogged drains, and humidifier problems with repair solutions.Why high-efficiency furnaces produce water and what makes them leak. The six most common leak causes and their solutions. Learn common causes such as condensation leaks, humidifierleaks, and clogged filters, plus when to schedule professional furnace repairs. Furnaces usually leakwater when a component is clogged, cracked, or malfunctioning. So, check the condensation pipes, furnacehumidifier and its pipes, and heat exchanger. For a proper inspection, get HVAC companies Arlington involved.