Garbage Disposal Problems

A garbage disposal is easy to take for granted until it hums, jams or leaks. Many disposal problems have simple fixes, while others mean it's time for a repair or replacement. Here's how to troubleshoot common issues safely and when to call for help.

Safety first

Before you do anything:

• Turn off the disposal at the wall switch.
• Unplug it or turn off the circuit breaker if you're reaching anywhere near it.
• Never put your hand inside the disposal. Use tongs or pliers to remove objects.
• Don't use chemical drain cleaners in a disposal. They can damage parts and splash back at you.

Problem: the disposal hums but doesn't spin

A humming sound usually means the motor is getting power but the grinding plate is stuck.

What to try:

1. Turn off power to the disposal.
2. Look for a hex-shaped socket on the bottom of the unit. Many disposals come with an Allen wrench that fits it.
3. Turn the wrench back and forth to free the jam.
4. Remove any loose objects from the chamber with tongs.
5. Restore power, press the reset button if needed, and test with cold water running.

If it still hums without spinning, the motor or bearings may be failing.

Problem: the disposal won't turn on at all

If there's no sound, check:

• The reset button on the bottom of the unit. Disposals often trip a built-in overload when they overheat.
• The circuit breaker or GFCI outlet.
• The wall switch, which can wear out over time.

If none of these work, there may be an electrical issue or a failed motor. Call a professional.

Problem: leaks

Where the leak comes from matters:

• Top of the unit, near the sink: the sink flange or mounting assembly may be loose or need new plumber's putty.
• Side connections: the dishwasher hose or drain pipe connection may be loose or the gasket worn.
• Bottom of the unit: this often means internal seals have failed. In many cases, replacement is the practical fix.

Problem: slow drains or clogs

Clogs often come from items that shouldn't go in a disposal. Run plenty of cold water while grinding and for a bit afterward. If the sink still drains slowly, the clog may be in the drain line or trap, which is a plumbing issue rather than a disposal issue. Our plumbing stoppages page explains how home warranties often handle clogs.

What not to put in a disposal

Avoid these common culprits:

• Grease, fats and oils
• Fibrous foods like celery, corn husks and onion skins
• Potato peels in large amounts
• Coffee grounds in large amounts
• Pasta and rice, which can swell
• Bones, fruit pits and shells
• Non-food items like twist ties, utensils and bottle caps

Bad smells

Odors often come from food stuck under the splash guard or in the grinding chamber. Clean the rubber splash guard with a brush and soapy water. Grinding a few ice cubes can help knock debris loose. Citrus peels in small pieces may freshen the smell.

Repair or replace?

Disposals are relatively simple appliances. Consider replacing yours if:

• The bottom of the unit is leaking
• The motor hums or won't run after you've cleared jams and checked power
• It's old and needs frequent resets
• The grinding chamber is rusted or corroded

Does a home warranty cover garbage disposals?

Many home warranty plans cover the garbage disposal, often as part of a systems or plumbing package. Coverage typically includes repair or replacement of the unit when it fails from normal wear. Common exclusions include damage from misuse or foreign objects, and some plans limit how clogs are handled. Check your contract's coverage list and any limits. Our home warranty coverage page shows what plans commonly include.

How Warranty Wizards can help

We help you compare home warranty plans from third-party providers and explain what each covers before you buy, including kitchen plumbing items like the disposal. You can get a free quote anytime.