Water Dripping From Furnace Pvc Exhaust Pipe

Take a look at its vent or exhaust pipe.

Water dripping from furnace pvc exhaust pipe. This is typically flown out of a pvc pipe that comes from the furnace and drains into the floor drain in your furnace room. This furnace exhaust was improperly installed causing water to collect inside the pipe restricting air flow. We drained approximately 1 5 liters of water bef. Another way to tell if it s high efficiency is by its afue annual fuel utilization efficiency rating.

Today i noticed water leaking from a section of the pvc exhaust pipe which travels upward from the furnace across the ceiling and out of basement wall where it vents into my backyard. When you see water puddling around the furnace with the a c running you have a clogged condensate drain tube. If it s leaking from the pipe they may have not glued the pipe together. If the pipe is white plastic pvc then your furnace is a high efficiency.

If your furnace exhaust pipe or flue pipe is leaking it can be a sign of a much bigger problem. With high efficiency furnaces they use so much of the heat for heating the living spaces the exhaust gasses can easily and safely be passed. You can prevent slime and eliminate drain tube clogs in two easy steps. Please confirm that it is indeed from the vent intake pipe and not possibly the drain at the furnace or the condensate pump line.

So if it is dripping water you should have a professional inspect the unit immediately. If it is the vent intake shut down your furnace and get a small can of pvc primer and glue. Prime and glue the pieces together. Why a conventional furnace leaks water.

If it s rated 90 percent or higher it has a cool exhaust and produces condensation therefore it s a high efficiency. Well the first answer already stated it s condensation. Condensation from air conditioning coils contains bacteria that can form slime and clog the condensate pan drain tube. There are two main issues that can cause your conventional furnace to drip water.

Some high efficiency furnaces also include a plastic pipe for intake area and all types use a third plastic pipe to drain away the corrosive condensation resulting from the combustion process. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents. The metal exhaust pipe connected to your furnace is designed to collect and vent away the gases produced during the combustion process. Here s what to look for.

To be more specific the pipe that comes out of the unit is attached to this leaking section which is attached to a pvc elbow then another piece of pipe and so on.