Now that you’ve successfully determined you’re dealing with a high-efficiency unit, let’s discuss the most common reasons for why your furnace is leaking water.Ĭondensation is created when the two heat exchangers inside the furnace absorb so much heat that the gas that’s typically expelled from your unit through the exhaust pipe turns to liquid. High efficiency condensing furnace is leaking water Older homes that have not been updated often have a conventional standard efficiency furnace. If you’ve recently moved into a new-construction home or a home where the heating and cooling systems were replaced, you likely enjoy the benefits of a high-efficiency model. Most newer homes have a high-efficiency furnace. Your AFUE rating should help you determine the furnace type. High-efficiency furnaces have an AFUE rating of 90% or above. The other 20% is lost through the chimney, air leaks, and other openings. Conventional standard efficiency furnaces have an 80% efficiency rating, meaning they convert 80% of the energy created to heat your home.
The rating should be printed on a yellow EnergyGuide label on the unit. Furnace AFUE ratingĪnother way to determine the furnace type is to locate the Annual Fuel Utilization Efficiency (AFUE) rating. A metal pipe suggests you have a conventional standard efficiency furnace. If the pipe is polyvinyl chloride (PVC), meaning it looks like white plastic, then you likely have a high-efficiency furnace. The exhaust pipe, often referred to as the flue pipe, is responsible for venting the exhaust from your furnace out of your home. The furnace exhaust pipe material is the biggest indicator of the type of unit you have. However, there are three main differentiators to help you determine the type of furnace in your home. What kind of furnace do I have?Ī high-efficiency condensing furnace and a conventional furnace have a lot in common. Avoid further damage by calling on a local company if water leaking from furnace components is one of multiple issues you’re experiencing with your unit. Our guide is meant to walk you through possible causes and solutions but certainly doesn’t replace the expertise of a reliable industry technician. Call a repair technician if the leak persists.Consider the ease and your comfortability in performing small DIY tests.Inspect the unit to find the source of the leak.Establish whether the furnace leaks when the air conditioner is on.Consider the most likely leak sources based on your ownership of either a high-efficiency condensing furnace, or a conventional furnace.Determine the type of furnace in your home.Not up for a DIY fix? Schedule an appointment for furnace repair.Įven if you eventually call in a furnace repair company, understanding why your furnace is leaking water empowers you to choose the best solution and ask questions to understand how the repair will be made.īelow are our recommended steps to take after discovering a furnace leak but before you contact a repair company:
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