Last updated: May 3, 2026
By Home Repair Genie
Quick Answer
Garbage disposal humming but not working? This common issue is usually caused by a jammed flywheel, stuck impellers, or an overheated motor. The good news: most fixes take under 10 minutes and require no plumber.
Why Your Garbage Disposal Is Humming But Not Working
A garbage disposal humming but not working usually means the motor is getting power but the blades aren’t spinning. This is actually good news—it usually means you don’t need a replacement. If your disposal isn’t running at all instead of humming, you may be dealing with a power issue—check out our guide on how to fix an outlet that’s not working.
Here are the most common causes:
- Jammed food or debris
- Stuck flywheel
- Overheated motor (tripped reset)
- Worn internal components
- Foreign objects (utensils, bones, etc.)
If your sink is also dripping or leaking, it could be related—here’s how to fix a dripping sink quickly.
Tools You May Need
- Allen wrench (usually 1/4 inch)
- Flashlight
- Tongs or pliers
- Wooden spoon
- Work gloves
7 Easy Fixes for a Garbage Disposal Humming But Not Working
1. Turn Off Power Immediately
Before doing anything, disconnect power to avoid injury.
- Unplug the unit under the sink
- Or turn off the breaker
Not sure if the breaker tripped? Here’s how to fix a tripped circuit breaker step by step.
Never put your hand inside the disposal.
2. Check for Visible Obstructions
Use a flashlight to look inside the disposal.
Common objects to remove:
- Bones
- Utensils
- Fruit pits
- Fibrous foods (celery, corn husks)
Use tongs, not your hands.
If water is also backing up in your sink, you may need to unclog a drain before your disposal will work properly.
3. Use an Allen Wrench to Free the Flywheel
Most disposals have a hex socket underneath.
- Insert the Allen wrench into the bottom hole
- Turn it back and forth to loosen the jam
You should feel the resistance break free.
This is one of the most effective fixes for a garbage disposal humming but not working.
4. Press the Reset Button
If the motor overheats, it shuts off automatically.
- Locate the red reset button on the bottom
- Press it firmly until it clicks
Wait a few minutes before restarting.
5. Manually Rotate the Blades
If the wrench didn’t fully fix it:
- Insert a wooden spoon handle into the disposal
- Gently move the blades side to side
This helps loosen stubborn jams.
6. Let the Motor Cool Down
If the disposal was overworked:
- Wait 10–15 minutes
- Then try again
Overheating is common if you run it too long or overload it.
7. Test the Disposal
Restore power and turn it on.
If it:
- Spins normally → Fixed
- Still hums → Move to next step or consider replacement
When to Replace Your Garbage Disposal
It may be time for a new unit if:
- It still hums after all fixes
- You smell burning
- It frequently jams
- It’s over 8–10 years old
If you still have a garbage disposal humming but not working after trying all fixes, it may be time for a replacement.
For additional troubleshooting tips and step-by-step visuals, check out this guide from wikiHow.
Pro Tips to Prevent Future Jams
- Always run cold water while using the disposal
- Avoid grease, pasta, and fibrous foods
- Cut large food into smaller pieces
- Run disposal regularly to prevent rust buildup
Following these tips can help prevent a garbage disposal humming but not working issue in the future.
FAQs
Why do I have a garbage disposal humming but not working?
This usually means the motor is working but the blades are jammed or stuck.
Is it safe to run a humming garbage disposal?
No. Turn it off immediately to avoid motor damage.
Where is the reset button on a garbage disposal?
It’s typically a small red button located on the bottom of the unit.
Can I fix a jammed garbage disposal myself?
Yes. Most jams can be cleared safely with basic tools in under 10 minutes. If you’re also dealing with slow drainage, you may need to unclog a drain as well.
Conclusion
If you’re dealing with a garbage disposal humming but not working, don’t panic—this is one of the most common and easiest plumbing issues to fix.
In most cases, a simple reset or clearing a jam will get your disposal running again in minutes.
By following these 7 easy fixes, you can save money, avoid a service call, and keep your kitchen running smoothly.