Also raise and re goop the storm collar.
Gas furnace vent pipe leaking rain water.
When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.
B vent is a good low mass system when properly laid out and installed.
The flashing and vent pipe entry was sealed right.
Sun exposure and heat especially during the summer can cause the rubber boot to crack creating the space for water to leak in.
The yellow energy guide tag says your furnace s efficiency is 90 or higher afue.
There are two main issues that can cause your conventional furnace to drip water.
When the roof vent is leaking the actual cause must be identified first.
Why a conventional furnace leaks water.
You ll know if you have a high efficiency furnace if.
If water does enter the combustion air pipe there should be a tee installed at distinct locations to prevent water from entering and leaking from the furnace.
Here s what to look for.
I have a storm collar and a high wind storm cap.
The evaporator coil is the indoor coil for air conditioning.
Every system will have certain wet time when the flue is cold er and will produce condensate until the flue warms up.
And over time many vent pipe boots get hard and brittle as.
First off conventional furnaces were not designed to produce water of any kind.
Poorly designed exhaust pipe.
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 your furnace exhaust pipe or flue pipe is leaking it can be a sign of a much bigger problem.
These boots vary in quality flexibility and longevity.
However if this tube becomes clogged or if the drain on your floor becomes it can cause water to backup and leak out of the furnace.
The vent flue pipe is white pvc as opposed to metal.
An upflow gas furnace will have the evaporator coil installed on top of it.
Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe.
So if it is dripping water you should have a professional inspect the unit immediately.
Gas furnace leaking water from evaporator coil.
No water was coming from the flashing or above the first flue seam inside the attic i e.
High efficiency furnaces those with an annual fuel utilization efficiency afue rating of 90 percent or higher have cool exhaust and as a result they produce condensation.
An easy way to tell if you have a high efficiency furnace is to look at.
Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.
Dura vent makes a cap called the brider cap that works very well and is not as open as your current cap.
