Quick Answer
Okay, so here's the quick version. Your disposal is humming because the motor is getting power, but the blades are stuck solid. First, and don't skip this, kill the power at the breaker box. Then, get under the sink and find that little Allen wrench that came with the unit. Stick it in the hole on the bottom center and wiggle it back and forth. This manually turns the motor and usually breaks it free. If it was an overload, hit the little red reset button on the bottom, too. Ninety percent of the time, that's all it is.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Unplug the garbage disposal or, for safety, turn off its power at the main circuit breaker. Double-check that it's off by flipping the switch.
Step 2
Shine a flashlight into the drain opening to visually inspect for any obvious foreign objects. Use tongs or pliers to carefully remove anything you see. NEVER use your hands.
Step 3
Locate the hexagonal opening on the bottom center of the disposal unit. Insert the disposal wrench (or a 1/4" Allen wrench) and turn it back and forth to manually move the impellers and free the jam.
Step 4
Locate the red or black reset button on the bottom of the disposal. Push it firmly. If it doesn't stay in, wait 10 minutes for the motor to cool and try again.
Step 5
If the wrench fails, ensure power is still off. Use a sturdy wooden broom handle or spoon from above to push against the impeller blades and try to rotate them manually to dislodge the object.
Step 6
Once the blades move freely, remove any loose debris with tongs, turn the power back on, and run cold water while testing the disposal.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Clearing Jam with Wrench/Reset | $0-$5 | $100-$200 | 15 minutes |
Manual Clearing from Top | $0 | $100-$200 | 20 minutes |
Garbage Disposal Replacement | $100-$400 | $250-$800 | 1-2 hours |
When to Call a Professional Appliance
- If the disposal still just hums after you've tried using the Allen wrench and broom handle to free the blades.
- If the red reset button immediately pops back out every time you push it, indicating a potential electrical short.
- If you see water actively leaking from the main body of the disposal unit itself (not the pipe connections).
- If the disposal is completely dead (no power, no hum) even after you've confirmed the breaker is on and the reset button is pushed.
- If you are unable to identify or safely remove the object causing the jam, or if you're not comfortable performing the repair.
Prevention Tips
- Always run a strong stream of COLD water before, during, and for at least 30 seconds after using the disposal.
- Avoid putting hard items like bones, large fruit pits, corn cobs, or any non-food items like silverware down the drain.
- Do not dispose of fibrous materials like celery, asparagus, or corn husks, which can wrap around the blades.
- Never pour grease, oil, or fat down the disposal; let it solidify in a can and throw it in the trash.
- Feed food waste into the disposal gradually instead of dumping in large amounts all at once.
- Regularly clean the disposal by grinding a tray of ice cubes and a few citrus peels to break up sludge and freshen the drain.
Frequently Asked Questions
Related Guides
DIY Appliance Repair vs. Hiring a Pro: A Technician's Honest Take (Troubleshooting & Fixes)
A veteran tech's guide on when to DIY appliance repair and when to call a pro. Learn the real risks, costs, and what YouTube won't tell you about fixing your stuff.
High utility bills due to inefficient appliance use and lack of energy-saving practices. Troubleshooting & Fixes
Preventing Appliance-Related Fires and Electrical Hazards in the Home Troubleshooting & Fixes (2024 Guide)
A veteran tech's guide to preventing appliance fires. Learn the warning signs, what causes them, and when to call a pro before it's a disaster.
Moving Appliances Without Breaking Them (Or Your Back)
A veteran tech's guide to moving appliances. Learn to disconnect, prep, and move your fridge, washer, or stove safely to avoid costly damage and leaks.
Eco-Friendly Appliance Disposal: What to Do with Your Old Appliances (Beyond Just Trashing Them)
A veteran tech's guide on how to get rid of old appliances. Learn about eco-friendly recycling, junk removal, and free disposal options for your old stuff.
Microwave Runs But Won't Heat (Troubleshooting & Fixes)
Microwave running but not heating your food? A veteran tech explains the common causes, from bad door switches to a failed magnetron, and how to fix it.
Need Professional Help?
Find top-rated appliance experts in your area