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Hearing a strange noise coming from your garbage disposal can be pretty unsettling. If your kitchen sink suddenly sounds like it’s running a rock concert every time you turn on the disposal, it’s a sign something isn’t quite right. Understanding what’s causing those odd sounds can help you fix the problem quickly — and avoid a costly replacement.
Common Causes of Strange Noises in Garbage Disposals
Most strange noises come from a few typical issues. One of the most common causes is something stuck inside the disposal’s grinding chamber. Small bones, utensils, or hard food scraps like fruit pits can get trapped and make a loud rattling or grinding noise.
Another cause could be the disposal’s motor struggling due to dull or damaged blades. Over time, wear and tear can reduce the disposal’s efficiency, causing it to work harder and make unusual sounds.
Loose parts or mounting issues can also create banging or vibrating noises. If the disposal isn’t securely attached to the sink, or if the mounting bolts have loosened, expect to hear some extra racket.
Is It Safe to Use My Garbage Disposal When It’s Noisy?
It’s best to avoid using your garbage disposal if it’s making strange noises until you identify the problem. Running it can worsen any damage or even cause the motor to burn out. Turning off the power and inspecting the unit safely is key to preventing further issues.
How Can I Fix a Noisy Garbage Disposal?
First, make sure the disposal is powered off and unplugged for safety. Use a flashlight to look inside the chamber for any stuck objects. Carefully remove any debris using tongs or pliers—never stick your hand inside.
If you hear a humming noise but the disposal won’t grind, the motor might be jammed. Many disposals have a reset button underneath the unit—pressing this can sometimes fix the problem.
For loose mounting or parts, tightening the bolts or screws might reduce the noise. If the blades are dull or damaged, it might be time to call a professional plumber or consider replacing the disposal.
How Can I Prevent Strange Noises in the Future?
Preventing disposal noise starts with what you put down the drain. Avoid grinding hard items like bones, fruit pits, coffee grounds, or fibrous vegetables like celery. Running plenty of cold water while using the disposal helps flush debris through the pipes.
Regular maintenance, such as cleaning the disposal with ice cubes and citrus peels, keeps the blades sharp and odors away. And if your disposal is older or frequently noisy, scheduling a professional inspection can catch problems early.
Summary
Strange noises from your garbage disposal usually point to stuck debris, motor issues, or loose parts. With a bit of caution and regular maintenance, you can often fix or prevent these noises and keep your kitchen running quietly. If the noise persists or you’re unsure how to safely handle the problem, Fix & Flow’s expert plumbers are here to help.