How to Unclog an Air Conditioner Drain With One Cup of Vinegar
- 1). Shake half a box of baking soda down the drain of the air conditioner.
- 2). Pour 1 cup of vinegar down the drain following the baking soda. The drain will begin to bubble and foam.
- 3). Wait for the drain to stop foaming.
- 4). Flush the drain using hot tap water to unclog the drain.
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