A clogged drain pipe is the most common cause of standing water in the drain pan.
Attic ac secondary drain pan.
This is in place as an added layer of protection against water damage.
The attic air conditioner drip pan installation installers are sometimes tying together both the primary and the secondary drains which installation negates the secondary drain purpose.
Small amounts of water in the ac drip pan is perfectly normal.
Allowing water to overflow in the drip pan may contribute to mold mildew and even rot.
For furnaces in the attic there is a second condensate drain pan.
It s usually better to replace the entire drain pan rather than trying to fix it.
Pour a gallon of water slowly into the overflow pan under the air handler and observe the water level in the pan to verify that water drains freely into the secondary drain line.
If the crack is small enough you can use epoxy glue.
Just think for a moment if the primary and the secondary pipe discharges in the attic will you ever go there and check on them.
The drain pipe is clogged.
If you see water pooling in your air conditioner you should give our technicians a call as soon as possible for a quick and efficient ac repair that will get your system back in shape again quickly.