Quote:
Originally Posted by tennisgal516
Does anyone know/or have a small drain on the outside wall of their house? It is on the outside building wall in the same area as the inside shut-off valve which is for the house water. It is dripping. Sorry it sounds confusing, but difficult to describe.
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It is the drain for the house air conditioner.
As your air conditioner cools the air going through the unit, there is some condensation. That water falls into a drip pan under the unit. The drip pan has a drain pipe leading to the outside so the pan doesn't overflow. You are seeing the drain pipe.