Furnace Vent Pipe In Attic Leacking Water

Insulating around a furnace exhaust pipe.

Furnace vent pipe in attic leacking water. Improperly designed vent pipe. Possible causes of leak. A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home. When these pipes either get clogged or break you ll get leaking condensation around the base of the furnace.

Another reason for your furnace leaking water is a break or clog in the humidifier. But that s not always the case especially in older models. And over time many vent pipe boots get hard and brittle as. If your conventional furnace is leaking water it s most likely because of 1 of these 3 reasons.

Furnace is leaking when ac is on 1. The heating system works fine and has done so for years. Now that you have safely sealed the air leaks around the furnace exhaust you can work on insulating your attic space. If your vent pipe is single walled you must create a 6 inch gap instead.

What this means is humidity requires water and so does the humidifier in your home. My problem is that i have water leaking from the wall only where the chimney and wall meet nowhere else in the attic. Roof vent leaking is always a problem. The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor.

The exhaust pipe on the other hand is metal aluminum and travels on a slightly upward angle into a nearby chimney to vent. Leaky humidifier if your furnace has a built in humidifier and the humidifier is clogged or has a leak somewhere in it then that could explain the water pooled. Use a longer piece of aluminum sheeting so you can create a larger perimeter. If your home has a humidifier you can potentially be seeing water.

When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe. Issue with the furnace humidifier. Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing. These boots vary in quality flexibility and longevity.

Roof leaks around vent pipes is relatively common. Taking a look at the vent or exhaust pipe is a pretty foolproof technique so don t worry if you don t know your furnace s afue rating.