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Why Is My Garbage Disposal Humming and How Can I Fix It?

You’re probably wondering why your garbage disposal is humming and why it won’t work anymore?

A humming garbage disposal can be really frustrating, especially if you don’t know what’s causing the noise. It can also be a sign that something is wrong or jammed up in your garburator system.

But don’t worry! In this article, we’ll walk you through the most common reasons why your garbage disposal is humming and how to fix it. We’ll also show you how to prevent these problems from happening in the future. So let’s get started.

3 Main Reasons Why Your Garbage Disposal is Humming and How to Fix It

A humming garburator or garbage disposal is usually caused by one of four things: a foreign object caught in the blades, a malfunctioning motor, a misaligned drain, or a clogged drain. Let’s take a closer look at each of these causes and how to fix them.

Foreign Object Caught in Blades

foreign object caught in the garbage disposal blades that cause it to hum

If you hear a humming noise coming from your garbage disposal, but it’s not spinning, it might mean that something is caught in the blades. This might be because of several things, including silverware, plastic bags, or food scraps.

If you suspect that something is causing your garbage disposal blades to get stuck, you should unplug the disposal and use a flashlight to look inside. If you see something caught in the blades, you can try to dislodge it using a wooden spoon or other blunt objects.

Be careful not to put your hand in the disposal, as the blades can be very sharp. You can also use an Allen wrench to dislodge the object. Go to the bottom of the garburator and insert the wrench into the bottom hole.

Twist the wrench back and forth until the object comes loose. If you can’t dislodge the object using these methods, you might have to call a professional.

Malfunctioning Motor

garbage disposal is humming because the motor is broken or malfunctioning

If your garbage disposal is humming and not working, the main reason for this is that the unit’s motor is malfunctioning. This is because of several factors, such as how long you’ve been using the system, misuse, or improper installation.

If you think the motor might be malfunctioning, you can try to reset it by turning off the disposal, unplugging it, and waiting for a few minutes. Then, plug it back in and turn it on. If the motor still isn’t working, you might need to replace it.

Clogged Drain

clogged drains cause the garbage disposal to hum

If your garbage disposal is humming and you’ve ruled out all of the other potential causes, it might mean that the drain is clogged. This is because of several reasons, such as food, grease, soap scum, and toothpaste.

If you think your drain is clogged, you can try to clear it by using a plunger or a plumbing snake. You can also try to clear it by pouring boiling water down the drain. If the clog is too severe, you can detach the drain pipe and clean it out.

If you have tried all of the methods above and your garbage disposal is still humming, it might be time to call a plumber to repair your garburator.

Tips to Prevent a Humming Garbage Disposal

There are a few measures on how to take care of your garbage disposal system for it to run smoothly and avoid humming.

  • Never put anything down the disposal that isn’t meant to be disposed of, such as silverware, plastic bags, or food scraps. Even fat and grease can cause the disposal to jam.
  • Always use the correct amount of water when running the disposal. If you don’t have enough water, it can cause the motor to overheat.
  • Ensure the drain is clear and free of debris before turning on the disposal.
  • Avoid putting too much food down at once. Try to break up large food scraps into smaller pieces before putting them down the disposal.
  • Regularly clean the garbage disposal with a mixture of vinegar and baking soda. This will help to remove any built-up grease and food particles.

If you follow these tips, you can help prevent your garbage disposal from humming. However, if the garbage disposal does start to hum, it’s important to troubleshoot the problem and fix it as soon as possible. Otherwise, the humming could cause further damage.


If your garbage disposal is humming, there are a few possible causes. You can troubleshoot the problem yourself by checking for foreign objects in the blades, resetting the motor, clearing the drain, and cleaning the disposal.

However, if you find these methods too complicated or you want to fix them as soon as possible, you can call a plumber for help. They will inspect the disposal and fix the problem quickly and efficiently.

If you’re experiencing any problems with your garburator and living in Lower Mainland Canada, contact Your Guy Plumbing for all your garbage disposal needs. Our team offers full-service garbage disposal repairs and installation 24/7, contact us today, and we’ll be happy to help!

John Relampago

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