The heat from an attic in the furnace doesn t always feel comfortable.
Attic furnace leaking water.
What you have going on.
There are many parts in the furnace that can leak drip or crack causing a water leak.
Water leak at indoor unit.
These devices are hooked up to your plumbing system in order to add moisture to the air.
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.
Furnace is leaking when ac is on 1.
There could be a few reasons why your furnace is leaking water but let s start with the most likely one.
And if your unit is in an attic or a finished basement this can cause terrible damage.
None of these outcomes are things you want to have in your home.
When you see water puddling around the furnace with the a c running you have a clogged condensate drain tube.
If your conventional furnace is leaking water it s most likely because of 1 of these 3 reasons.
Improperly designed vent pipe.
It s not furnace season so it shouldn t be the furnace that s leaking all the water.
Another reason for your furnace leaking water is a break or clog in the humidifier.
They also have to drain the water.
Over time algae can grow inside of this drain line causing backups or clogs.
In this case it isn t actually your furnace leaking it just appears to be.
Sometimes the ac and the furnace share an internal drain and if there s something plugging up the drain which can happen if dirt and dust collect in there the condensation your hvac system produces inevitably overflows and leaks onto the floor under the furnace.
Is your furnace leaking water when the ac is on.
If there is too much water in your attic then it might lead to mold in your insulation floor joists that begin to rot ceiling leaks and fixture damage.
An easy way to tell if you have a high efficiency furnace is to look at.
If water is dripping from your ceiling and your furnace and or air handler is located in the attic the most likely cause is a clogged condensate drain line.
Condensation from air conditioning coils contains bacteria that can form slime and clog the condensate pan drain tube.
You can prevent slime and eliminate drain tube clogs in two easy steps.
And along with the furnace comes the central humidifier which can also be a source for leaks.