How to Check Drainage in an Air Conditioner

Air conditioners generally work by pulling warm air into the main unit and passing it over the condenser coils, which cool the air and send it back into the home. During this process, water is collected and typically drips down the drain pipe and into the drain pan. If there seems to be a leak or there is no water dripping down into the drain pan, there may be a problem with the air conditioner drainage. Checking and troubleshooting potential problems with the drain can help prevent more major issues down the line.

Wet/dry vacuum
Bleach
Measuring cup

Instructions

- 1
  Locate the drain line on the outside rear of the air conditioner unit.
- 2
  Inspect the drain line for signs of a problem. There may be a puddle near the air conditioner unit on the ground or near the air conditioner base if the drain pipe is clogged.
- 3
  Turn the drain pipe so that if faces down if the pipe has gotten turned and is not positioned to drain down and out.
- 4
  Attach a shop wet/dry vacuum cleaner to the end of the drain pipe and suction the drain line. Repeat as necessary until the drain line is clear. Pour 1 cup household bleach into the drain pipe to help clean and clear any remaining obstructions.
- 5
  Contact a professional service center for assistance if the problem with drainage continues.

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