AC condensation (clear water) is draining inside the cab, from beneath the glove box. If the drain to outside is clogged, how do you clear it?

remove glove box and plastic ducting by fan will be the ac coil also a little drain with a tube that runs into engine by firewall or to fender and down to drain condensation ur drain is clogged [if u can c or access the drain tube from outside clear with air first ] but clean drain and clear tube

Since it was drilled-- verses-- making the proper fix in the past

Your ONLY option-- is completely remove as much as necessary,
until you have found ALL problems & butchered work & reassemble correctly & replace that drilled item

The heat exhanger in the ductwork will create condensation as it cools the air, removing water from the air. There is a rubber tube that can become plugged with acumulated dust and dirt in the ductwork. That tube allows condensation to drip onto the ground beneath the firewall in the engine compartment. Try blowing compressed air into the drain tube from beneath the vehicle. A blocked drain tube can cause mildew to grow in the ductwork, which is a bio hazard.

A properly functioning condensation drain tube will small water puddles to appear under the vehcile where it is parked after the AC has been used.

Your air conditioner condenses alot of moisture while it is cooling. This falls into the box that the blower fan is mounted inside of. There is a small drain hose that allows this moisture to drain outside the vehicle. Have this drain checked to insure that it is open. You can usually blow low pressure air into the hose to verify that it is clear.. Good Luck!

If you are using the AC or defroster, it is most likely the drain is clogged. When the AC runs, it will condense water on the evaporator. This is supposed to drain outside the car but if the drain is clogged it will back up and spill into the car. There should be a rubber drain tube on the evaporator box normally on the passenger side.

I do not have a clue as to cost.

The two drain holes in the compartment beneath the wipers are plugged with debris. Take off wipers.
2. Take of plastic panel under wipers. 3. Clear crud away from drain holes. Pour water in there afterward to make sure it drains properly..You will see it come out the bottom under the car.
4. Clean out any other leaves hope this will hlp you

Well, the A/C drain may very well be clogged. What happens is, trash and leaves and such will fall into the fresh air vent outside the car eventualy making its way down into the air box, where the evap core is located. The evap core housing/ air box has a drain for the condensation from the evap core to drain. This drain gets stopped up from the dirt, leaves and trash, in turn causes the condensation to overflow into the car. One way to avoid this in the future is to run your A/C on the recirculated air mode, thast way your not pulling all the trash in from outside.

The evaporator box drain is stopped up.Under hood,under the firewall,right below the ac lines,you will find the drain.Take a small wire,like balin wire and move it in and out of the drain hole to relieve the water,it will pour out pretty good.If this doesn`t work,try compressed air pressure.I hope this helps.

Sounds like your drain is pluged. The drain is on pass. Side on fire wall. More than likely will have to get under car to find it. Try shooting some compressed air into drain port

YOUR AC CONDENSTAION DRAIN IS PLUGGED, CLEAR IT. THE DRAIN IS ON THE PASWSENGER SIDE UNDER THE CAR BOTTOM OF FIREWALL.