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