I went to an up/down style duplex intending to remove some ceiling to let the insides dry out from a leak only to find that the leak had not been stopped and... Gas & Electric Furnace Repair Services. Do you have a high-efficiency furnace? This is typically an Annual Fuel Utilization Efficiency (AFUE) rating of 90% or higher. Water leaking or pooling around a furnace can be an alarming find, to say the least. Let’s unpack 11 possible reasons why even a high-efficiency furnace might be struggling to keep it together—and find out what to check before calling a professional repairman in to fix the leak. Is your furnaceleaking water? Learn common causes such as condensation leaks, humidifierleaks, and clogged filters, plus when to schedule professional furnace repairs. HowcanI tell if my humidifier’s gasket needs replacing? If the gasket is cracked, worn, or no longer seals tightly, it can cause water leaks. Inspect the gasket closely for any visible damage. Furnacehumidifierleaks can cause high water bills.This article looks at the role they play in home comfort andhow they can lead to high bills and water related damage. Why a furnacehumidifier is good to have. When you realize your furnace is leaking water, don’t panic. Here’s what you need to do, and whyit happened in the first place.How Does a Furnace Produce Water?