Sun exposure and heat especially during the summer can cause the rubber boot to crack creating the space for water to leak in.
Gas furnace vent pipe leaking water.
Why a high efficiency furnace creates condensation how in the heck does a high efficiency furnace create condensation water anyway.
Gas furnace leaking water from evaporator coil.
Here s what to look for.
If your conventional furnace is leaking water it s most likely because of 1 of these 3 reasons.
The yellow energy guide tag says your furnace s efficiency is 90 or higher afue.
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.
So if it is dripping water you should have a professional inspect the unit immediately.
You ll know if you have a high efficiency furnace if.
When the roof vent is leaking the actual cause must be identified first.
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.
This is typically flown out of a pvc pipe that comes from the furnace and drains into the floor drain in your furnace room.
If your furnace exhaust pipe or flue pipe is leaking it can be a sign of a much bigger problem.
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.
Poorly designed exhaust pipe.
There are two main issues that can cause your conventional furnace to drip water.
The vent flue pipe is white pvc as opposed to metal.
First off conventional furnaces were not designed to produce water of any kind.
Why a conventional furnace leaks water.
Furnace is leaking when ac is on 1.
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.
An upflow gas furnace will have the evaporator coil installed on top of it.
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.
Improperly designed vent pipe.
The evaporator coil is the indoor coil for air conditioning.