Gas Furnace Flue Pipe Leaking Water From Storm

Like all installations that poke through the roof sometimes a flue pipe develops leaks that result in water leakage into the attic or roof space when it rains.

Gas furnace flue pipe leaking water from storm.

Improper flue exhaust can result in your furnace leaking water. If this is the case it s best to call your local furnace repair team. This can cause premature flue failure. Your humidifier should be getting annual maintenance from a professional to prevent this.

There s a chance this has. It was very windy out during the storm. Improperly installed vent connector that reduces exhaust velocity. In some circumstances the plastic can be cracked.

If the pan is cracked it needs to be repaired. Much of the drain system and some of the parts are made of plastic. A number of points may fail in the flue but they are mostly easy to detect and fix. This includes the drain pan and the drain piping.

There are other reasons why your condensing gas furnace can leak water. A standard efficiency furnace extracts some heat from the combustion gases and quickly vents them out the exhaust or flue pipe. If you have a condensation leak with a standard efficiency then its exhaust or flue pipe may be incorrectly sized. Other causes of leaking water around a furnace if you have a conventional standard efficiency furnace then its flue pipe may be incorrectly sized.

There should be no water involved with a standard efficiency furnace. Broken condensation line condensate pump. If you have a whole house humidifier connected to the furnace there may be an issue which is causing the humidifier to leak into your furnace. This will cause your gas furnace to leak water.

Some causes of exhaust pipe restrictions are the flue cap is missing. B vent leaking from seam in pipe. The water drips on a piece of wood in the attic which apparently has always dried before causing an issue. In a gas heated home a flue pipe vents the gases out through the roof.

Exhaust pipe restrictions will cause the pressure in the flue to rise creating positive pressure and inhibiting proper exhaust. If your flue pipe is improperly sized or was installed incorrectly the gases move too slowly allowing them to cool down condense inside the flue and drip back toward the furnace. If you have a standard efficiency furnace usually 15 plus years old it should not be leaking water. Gas furnace flue pipe leaking water from storm where my gas furnace flue pipe type b runs through my attic i had water dripping from the connections seams in the area where it makes a 45 degree bend water was inside the pipe from blown rain.

If this is the case it could be an incorrectly sized flue pipe which is making water to drain back into the furnace.