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Dishwasher air gap cleaning
If you suspect a clog, follow these steps for dishwasher air gap cleaning.
- Paper towel roll
- Wet/dry vac (optional)
An air gap, that small tower sitting on or near your kitchen sink, keeps dirty sink drain water from flowing back into your dishwasher. White stains at the air gap’s base or around its vents, or water leaking from it when the dishwasher is running are sure signs of a clog.
Step 1. Remove air gap cover
Turn off the dishwasher. Remove the cover from the air gap on the sink and remove the cap under it.
Step 2. Remove food particles
Look inside the air gap. If you see food particles, remove them with a toothpick or chopstick.
Step 3. Remove additional debris
If you do not see debris, take a paper towel roll and place it over the air gap. Position your mouth over the opening on the opposite end of the roll and give it one hard blow. You may hear debris dislodge.
If you cannot force air into the gap using the paper towel roll, there is a deeper clog.
Step 4. Flush out remaining buildup
You can also try using a wet/dry vac to suction out the obstructions in the air gap.
Run hot water into the sink so that it will flow from the drain and through the air gap with the help of the wet/dry vac to flush out any remaining buildup. Suction hot water from the air gap using this method for about 30 seconds.
Still seeking a solution? Call us at 888-272-1655 to schedule a free in-home diagnostic.
✓ Reviewed and approved by Repair.com expert Tanner Andrews, Andy’s Appliance Repair.