How to Clean an AC Drain Pan
- 1). Turn the air conditioning unit off. Look at the back side of the air conditioner, and locate the PVC pipe that leads from the coil inside the case to the drain pan below the case..
- 2). Disconnect the PVC pipe from the air conditioning case, using a pair of pliers. A black valve should be connecting the pipe and the case. A couple of turns to the left with the pliers should release the connection.
- 3). Run a water hose down into the PVC pipe to flush the pipe and drain pan. The water will rush down into the drain pan and push any debris out. It is not necessary to remove the drain pan from the bottom of the air conditioner. When the water runs out of the drain pan and is clear, stop flushing the pipes. The water will continue to drain out.
- 4). Replace the black connector before turning the air conditioner back on.
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