Air Conditioner - water standing in condenser housing

Question

After clearing out the overflow pipe, I still had a problem because water has started dripping in places not directly over the drain pan.
I "extended" the coverage with sheet metal, but the water is still dripping from somewhere that I can not yet see.  I looked inside the condenser housing (which is directly above the pan) and saw that water is standing there.
Is there supposed to be a drain hole somewhere on the bottom of this sheet metal housing?  (Water backing up in there might be getting deep enough to flow into the much larger distribution box where the ducts connect.)

Ed Beal · Answer

A drip pan backing up is very common.
Look for the drain, there is probably some growth of moss / mildew and dust growing in the drain. Don’t use vinegar to clean it vinegar will Dissolve the galvanized coating over multiple uses and is hard on the coils.
The drain is usually on the outside edge and I always tilt the pan so that is the low point.

Air Conditioner - water standing in condenser housing

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