How To Fix A Garbage Disposal Humming?

Humming garbage disposal? This guide will help you diagnose the problem and offer the best solutions to fix a humming disposal.

fix garbage disposal hummingFix garbage disposal humming

  1. Reasons For A Humming Garbage Disposal?
  2. Fixing Disposal Humming.
  3. Prevention/Maintenance Tips.
  4. Frequently Asked Questions

Why Does My Garbage Disposal Hum?

Jammed or Stuck Objects: Foreign objects such as utensils, bones, or fibrous food waste can become lodged in the disposal, causing it to hum.

Overheating: If the disposal has been running for too long, it may overheat and stop working, producing a humming sound.

Worn or Damaged Motor: If the motor is damaged or worn out, it may struggle to operate and create a humming noise.

Fixing A Humming Disposal

Safety First: Unplug the garbage disposal or turn off the circuit breaker before attempting any repairs.

Inspect the Disposal: Check for any visible foreign objects lodged in the disposal.

Use a Plunger: If you suspect a clog, try using a plunger to dislodge the blockage.

Allen Wrench Method: Use the provided Allen wrench to manually turn the disposal and free any jammed objects.

disposal wrenchGarbage Disposal Wrench is 1/4″

Reset Button: After dislodging any obstructions, press the garbage disposal reset button located at the bottom of the disposal.

Test the Disposal: Plug the unit back in or turn the circuit breaker back on and test the disposal for proper function.

Prevention And Maintenance Tips

Run Cold Water: Always run cold water while using the garbage disposal to help flush waste down the drain.

Avoid Fibrous Foods: Keep fibrous foods like celery, corn husks, and onion skins out of the disposal, as they can cause jams.

No Grease or Oil: Never pour grease or oil down the disposal as it can solidify and cause clogs.

Dispose of Bones Properly: Do not put bones in the garbage disposal, as they can break the blades or cause jams.

Clean Regularly: Clean your garbage disposal regularly by grinding ice cubes and lemon peels to keep it fresh and free of debris.

If you’ve tried the DIY methods and your garbage disposal is still humming, it might be time to call a professional plumber. They can diagnose and fix garbage disposal issues, such as a damaged motor, that may be causing the problem.

Garbage Disposal FAQs

1. What causes a garbage disposal to hum but not grind?

A humming garbage disposal usually indicates a jam or a stuck impeller. The motor is still running, but the grinding mechanism is unable to move due to a foreign object or built-up food debris. The humming sound is a result of the motor trying to turn the impeller but being unable to do so.

2. Is it safe to use a garbage disposal that’s humming?

No, it is not safe to use a humming garbage disposal. The humming indicates that the disposal is jammed, and continued use may lead to motor burnout, which can cause irreversible damage. Turn off the power to the disposal immediately and address the issue before attempting to use it again.

3. How can I fix a garbage disposal that’s humming but not working?

To fix a humming garbage disposal, follow these steps:

  1. Turn off the power and unplug the disposal.
  2. Inspect the grinding chamber for visible obstructions.
  3. Use a plunger or Allen wrench to free the impeller.
  4. Press the reset button on the bottom of the unit.
  5. Test the disposal to ensure it’s working properly.

If these steps don’t resolve the problem, consult a professional plumber.

4. Can a humming garbage disposal be a sign of a bigger problem?

While a humming garbage disposal is often a sign of a jam or stuck impeller, it may also indicate a more serious issue, such as a failing motor or damaged internal components. If you have tried the steps mentioned above and the disposal is still humming, it’s best to call a professional plumber to diagnose and fix the issue.

5. How can I prevent my garbage disposal from humming in the future?

To prevent your garbage disposal from humming, follow these tips:

  1. Run cold water before, during, and after using the disposal.
  2. Avoid putting fibrous or hard materials into the disposal.
  3. Cut large food items into smaller pieces before disposing of them.
  4. Regularly clean your garbage disposal with a mixture of baking soda and vinegar.
  5. Perform periodic maintenance checks to ensure the disposal is functioning correctly.

Need more help with your garbage disposal? Please leave a comment below with your problem and we will get back to you with an answer.

Leave a Reply

74 thoughts on “How To Fix A Garbage Disposal Humming?”

  1. Thank you for the great instructions! I was able to get it to turn with the wrench, but then it jams up again.

  2. This helped, thanks a lot. The hex key solution worked for me, needed to turn it both ways to free it up.

  3. DIY Project Help Tips

    Charlie,
    If it feels tight just keep turning as it is jammed and needs to be “moved” using the allen or hex wrench.
    Common sense would hopefully make people realize that when un-jamming a garbage disposal with an allen wrench under the disposal, it needs to be TURNED OFF.
    Read the info on the above page and you will see the correct method to unjam a humming disposer.
    NEVER RUN THE DISPOSAL WHEN REPAIRING OR UNJAMMING IT, UNPLUG IT TO BE SAFE.
    -RR

  4. So, let me get this straight! This person stuck the allen in the bottom, then turned the disposal on, then turned the allen until the disposal stated to run ! Would the allen wrench then turn at the rpm that the motor is spinning? If so, this sounds a bit unsafe ? I am having the same issue. Is the mechanism where rthe allen is on a some sort of a clutch ? When I spin the shaft with the allen, it spins but seems on the tight side.

  5. Kathleen Scarbrough

    SavedSaved me & my daughter $300 using the instructions on this site!
    Get out your Allen Wrench and fixit yourself!! Plumbers will not repair garbage disposals, only replace!
    D I Y!

  6. DIY Project Help Tips

    Howard,
    There should be an area on the bottom to place a hex wrench. What is the model number of your KitchenAid garbage disposal?
    -RR

  7. I have a KitchenAid garbage disposal that hums but does not spin. This disposal does not have any space to place hex wrench to unclog it. I have checked there is not anything large blocking the disposal. What do you suggest?

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