AC dripping on right, wet passenger carpet

[nrancour]

2002 Mountaineer V6 4.0L
Air conditioning works perfectly.
Drain, on driver side (left) is not plugged.
I removed the bottom of the heater core box to verify drain was 100% clear.

Problem: Heater/Evap box drips on right side of box and does not run into drain pan. See attached picture.
It drips only when A/C is on.
It drips, whether on outside air or recirculate.
It is not condensate on outside of box, back and sides of the box are dry.

What else could it be? Has anyone ever created a "secondary drain"?
I'm about to create a small drain box underneath and drill another hole on the right floor board. Maybe drill a hole and stick a small funnel in it. ;-)

Help !

 

[shucker1]

A\C drain should be on the right (Passengers) side of the truck.
If I'm not mistaken behind the RF wheel liner?

Check there.

 

[nrancour]

Drain is on left transmission tunnel

On my Mountaineer, the drain is hard plastic and is part of the Heater/Evap box.
It exits the cabin through the transmission tunnel on the left side of the transmission tunnel by the accelerator pedal.

 

[nrancour]

My solution

I never could find why it is dripping water on the right side of the AC/heater core; so, here is my "workaround solution" to eliminate wet carpet.

I made a secondary drip pan that slides underneath the drip and routes the water outside the vehicle.

I used a piece of dryer vent.
Cut out a section of 9"x8". Fold sides; trim as shown.
Don't make the cut on the right. Just leave it 1". I thought I would have to go under/around the vent; but didn't need it.
Drill hole for drain, attach hose connection.
I used caulk around connection so it doesn't leak
Attach hose.
Slide in under existing box up as high as you can go.
Drill hole in floor pan.
Route hose and secure to floor pan.

I attached a bottle for a few days to test it and I captured about 16oz. per day. All that was going into my carpet. Now drips on the ground.

Not pretty or elegant, but it works for me !