A sink becomes clogged in many ways. But generally the clog is a combination of smaller items that come together rather than one larger item. A clogged drain is cleared with a plumbing snake, a plunger or with the use of an air compressor. Most air compressors plug into a regular 110-volt outlet and require a few minutes to pressurize. An air compressor is a convenient tool and is available for under $100, according to 2011 prices.
Things You'll Need
Small plastic container
Wand fitting with trigger
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Bail the water out of the sink with a small plastic container. Remove as much of the water as you can so you will have clear access to the drain with the compressor wand.
Insert the compressor wand into the drain as far as you can.
Stuff old rags around the wand between it and the sides of the drain. The object is to prevent air from escaping through the top of the drain. You will have the greatest chance for success if most of the air is directed down into the drain where the clog is located.
Squeeze the trigger on the wand to release the air into the drain. Let the air blow into the drain for three to five minutes while you try to move the wand around in the drain.
Remove the wand and the rags from the drain and run the water to test the drain. If the drain is still clogged, repeat the process until the drain is cleared. Once the drain is cleared, fill the sink with water and let an entire sink full of water flush the drain. Repeat this three or four times.