How to Replace a Garbage Disposal in 2024

To replace a garbage disposal, first turn off the power, disconnect the plumbing, and remove the old unit. Then, install the new disposal, reconnect the plumbing, and restore power for a working unit.

When replacing a garbage disposal, following these steps ensures a smooth and efficient process. By properly disconnecting the old disposal and installing the new one correctly, you can avoid any potential issues in the future.

This guide will walk you through the necessary steps to successfully replace your garbage disposal on your own.

Whether you are upgrading an old unit or dealing with a malfunctioning disposal, this tutorial will help you complete the task with ease.

Preparing For The Replacement

Before replacing a garbage disposal, it’s important to properly prepare for the task. This involves gathering the necessary tools and shutting off power to the disposal to ensure a safe and efficient replacement process.

Gathering The Necessary Tools

Before starting the replacement, it’s essential to gather all the necessary tools and equipment. Here’s a list of tools you’ll need:

  • Adjustable wrench
  • Screwdriver
  • Plumber’s putty
  • Pipe wrench
  • New garbage disposal unit

Shutting Off Power To The Disposal

To ensure safety during the replacement, it’s crucial to shut off the power to the garbage disposal. Here’s how you can do it:

  1. Locate the circuit breaker panel in your home.
  2. Identify the circuit breaker that controls the disposal.
  3. Flip the switch to the “off” position to cut off the power supply.
How to Replace a Garbage Disposal


Removing The Old Garbage Disposal

When replacing a garbage disposal, one of the essential steps is removing the old unit. This process involves disconnecting the power and the plumbing connections, followed by carefully removing the old disposal unit from the sink.

Disconnecting The Power Supply

Start by turning off the power to the garbage disposal at the breaker box.

Detaching The Drainage Pipes

Use a pipe wrench to loosen the collars that connect the pipes to the disposal.

Installing The New Garbage Disposal

Attaching The Mounting Ring

Bold the mounting ring into place beneath the sink opening.

Connecting The Disposal To The Drainage System

Attach the drain pipe to the garbage disposal’s outlet tube securely.

How to Replace a Garbage Disposal


Testing And Finishing Up

Replace a garbage disposal by testing and finishing up the installation. Run water to check for leaks, and make sure the disposal is functioning properly. Once tested, finish up by securing all connections and cleaning up the work area.

When you have successfully installed your new garbage disposal unit, the next step is to test and ensure that everything is in order.

Here’s a detailed guide to help you through testing and finishing up the replacement process. Restoring Power to the Disposal Once the installation is complete and all connections are secure, the next step is to restore power to the garbage disposal. Make sure the switch is turned off before you restore power.

Checking for Leaks After restoring power, it’s crucial to check for any leaks. Start by running some water through the disposal and check for any moisture or water buildup under the sink. Inspect all the connections carefully to ensure there are no leaks.

Steps to Check for Leaks
Run water through the disposal
Visually inspect for any moisture or water buildup
Check all connections for leaks

“` In case you notice any leaks, tighten the connections as needed. With these final steps, the replacement process for your garbage disposal is complete, and you can now enjoy a fully functional kitchen sink.

Troubleshooting Common Issues

When it comes to your garbage disposal, it’s not uncommon to experience some common issues. To help you troubleshoot and resolve these problems, we’ve outlined some steps below.

The Disposal Doesn’t Turn On

If your garbage disposal doesn’t turn on when you flip the switch, there are a few things you can check:

  1. Ensure that the disposal is plugged in properly and that the circuit breaker hasn’t tripped.
  2. Press the reset button located on the bottom or side of the disposal. This can often resolve minor electrical issues.
  3. If the reset button didn’t solve the problem, use an Allen wrench to manually rotate the disposal’s motor from underneath. This can help free any jammed components that may be preventing it from turning on.
  4. If none of the above steps work, it may be a sign of a more serious electrical or mechanical problem, and it’s best to contact a professional plumber for further assistance.

Leaking From The Bottom

If you notice water leaking from the bottom of your garbage disposal, it’s important to address the issue promptly to prevent further damage. Here’s what you can do:

  1. Turn off the power to the disposal by unplugging it or flipping the appropriate circuit breaker.
  2. Inspect the connections between the disposal and the drain pipe to ensure they are tight and secure. If any seals or gaskets are worn or damaged, they may need to be replaced.
  3. Check the internal components of the disposal for any cracks or fractures. If you spot any, it may be necessary to replace the entire unit.
  4. Examine the dishwasher connection, if applicable, and tighten any loose fittings or replace any faulty components.
  5. Once you’ve addressed the issue, turn the power back on and run water through the disposal to check for any remaining leaks.

Troubleshooting common issues with your garbage disposal can save you time and money, allowing you to quickly resolve any problems that may arise. By following the steps outlined above, you can ensure that your garbage disposal is working efficiently and effectively.

How to Replace a Garbage Disposal


FAQs Of How To Replace A Garbage Disposal

Can I Replace A Garbage Disposal Myself?

Yes, you can replace a garbage disposal by yourself. Following online tutorials can help. Be sure to turn off the power and water before starting.

How Long Does It Take To Remove And Replace A Garbage Disposal?

It typically takes 2-4 hours to remove and replace a garbage disposal, depending on the complexity.

How Do I Choose A Replacement Garbage Disposal?

To choose a replacement garbage disposal, consider the size, motor power, and noise level. Compare brands, read reviews, and measure the space for installation. Ensure compatibility with your plumbing and electrical setup for a smooth replacement process.

Do You Need To Turn Off Water To Change Garbage Disposal?

Yes, it is necessary to turn off the water before changing the garbage disposal.


In a nutshell, replacing a garbage disposal can be a manageable task with the right tools and guidance. By following the steps outlined in this guide, you can effectively tackle this home improvement project on your own. With a properly functioning garbage disposal, you can enjoy a cleaner and more efficient kitchen environment.

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