The most common reasons a garbage disposal stops working
A garbage disposal that won't turn on usually has one of three problems: the circuit breaker has tripped, the reset button underneath the unit has popped out, or the disposal is jammed. Start by checking the circuit breaker panel in your home — look for a switch that is halfway between on and off, or labeled for the kitchen. Flip it all the way off, then back on. If the disposal still does not run, press the red or black reset button on the bottom of the unit itself, directly under the sink. Press it firmly until you hear or feel a click.
If the disposal hums but the blades do not turn, something is blocking them. Do not put your hand down into the disposal. Instead, turn off the power at the breaker, then use tongs or pliers to pull out whatever is stuck — usually a bone, fruit pit, or piece of silverware. Once you remove the obstruction, press the reset button again and restore power.
If the disposal makes no sound at all and the reset button does not help, the motor itself may have failed, or the electrical connection may be loose. This usually means you need a replacement unit or a call to a plumber.
Key Takeaways
- Check the circuit breaker first — a tripped breaker is the most common reason a disposal stops working entirely.
- Press the reset button on the bottom of the unit if the breaker is fine; this solves most problems that happen after normal use.
- If the disposal hums but does not turn, use tongs to remove whatever is jamming the blades — never reach in with your hand.
- A disposal that makes no sound and does not respond to the reset button usually needs professional repair or replacement.
How to clear a jammed disposal safely
Before you do anything, turn off the power at the circuit breaker. This is the only safe way to work on a disposal. Do not rely on the switch at the sink — always kill power at the breaker panel itself.
Once the power is off, use a flashlight to look down into the disposal opening. Use tongs, needle-nose pliers, or a wooden spoon handle to fish out whatever is stuck. Common culprits are chicken bones, avocado pits, corn cobs, and forks or spoons that fell in. Pull straight up and out; do not try to push things deeper. If you cannot reach it, you may need a plumber's snake or a professional to remove it.
After you remove the blockage, turn the blades by hand a few times using the tongs or pliers to make sure they move freely. Then restore power at the breaker and press the reset button. Run cold water and test the disposal on its lowest setting.
When the disposal hums but will not spin
A humming sound means the motor is running but the blades are stuck. This is different from a disposal that makes no sound at all. The hum tells you the electrical connection is fine and the motor has power — something is just physically blocking the blades from turning.
Turn off the breaker when ready. A disposal that hums while jammed can overheat and damage the motor if you leave it running. Once power is off, use tongs to remove the jam. If the blades still will not turn freely after you remove the obvious blockage, there may be something wedged deeper in the chamber, or the motor coupling (the part that connects the motor to the blades) may have failed. At that point, a plumber can diagnose whether the unit can be repaired or needs replacement.
Resetting the disposal after a jam or power loss
The reset button is a safety feature that cuts power to the motor when the disposal overheats or jams. It pops out automatically, and you have to press it back in to restore power. You will find it on the bottom of the unit, directly under the sink. It is usually red or black and about the size of a pencil eraser.
Press it firmly with your finger or the heel of your hand until you feel it click into place. You may have to press hard — it is designed to stay out until you deliberately reset it. After you press it, wait a few seconds, then turn the disposal on. If it still does not work, the reset button may be stuck or the motor may have failed.
If the reset button pops out repeatedly even when nothing is jammed, the motor may be overheating due to age or a mechanical problem. This usually means the disposal needs to be replaced.
Checking the circuit breaker and electrical connection
The circuit breaker is the fastest thing to check because it solves the problem when ready if it is the cause. Go to your electrical panel (usually in the basement, garage, or utility closet) and look for the breaker labeled for the kitchen or garbage disposal. It should be in the fully on position. If it is in the middle or off position, flip it all the way off, wait a few seconds, then flip it back on.
If the breaker trips again right away, there is a short circuit or electrical fault in the disposal or its wiring. Do not keep flipping it back on — call a plumber or electrician. Repeated tripping means something is wrong with the unit itself, not just a temporary overload.
If the breaker stays on and the disposal still does not work, the problem is not electrical. Move on to checking the reset button and looking for a jam.
What not to put in a garbage disposal
Knowing what causes jams helps you avoid them. Never put bones, fruit pits, corn cobs, or fibrous vegetables like celery or asparagus down the disposal. These get tangled in the blades or wedge against the chamber walls. Grease and oil should not go down either — they solidify as they cool and build up over time, slowing the blades and eventually clogging the drain.
Pasta, rice, and bread expand when wet and can jam the blades or block the drain pipe below. Eggshells are surprisingly problematic because the membrane inside sticks to the blades. Coffee grounds are fine in small amounts, but large amounts can accumulate and cause problems.
The safest approach is to scrape plates into the trash, then use the disposal only for small food scraps and water. Run cold water while the disposal is on, and let it run for a few seconds after you turn it off to clear the drain.
When to call a plumber instead of fixing it yourself
If you have turned off the breaker, pressed the reset button, and removed any visible jam, but the disposal still does not work, a plumber can diagnose the problem faster than trial and error. The motor may have burned out, the motor coupling may have failed, or there may be an internal jam you cannot reach.
Call a plumber when ready if the disposal is leaking water from the bottom or sides. This usually means the seal has failed and the unit cannot be repaired — it needs replacement. If the reset button keeps popping out even when nothing is jammed, the motor is overheating and the unit is near the end of its life.
A new garbage disposal typically costs between $150 and $400 for the unit itself, plus $100 to $200 for installation. Repair costs vary, but if the motor has failed, replacement is usually cheaper than repair.
Frequently Asked Questions
Can I use my garbage disposal if it is leaking?
No. A leak means the seal between the motor housing and the grinding chamber has failed. Water will eventually reach the motor and cause electrical damage or a short circuit. Turn off the disposal and call a plumber. The unit will need to be replaced.
What should I do if something metal falls into the disposal?
Turn off the power at the circuit breaker when ready. Use tongs or pliers to pull the object straight up and out. Do not run the disposal with metal inside — it can damage the blades or fly out and cause injury. Once you remove it, check that the blades spin freely before turning the power back on.
How long does a garbage disposal usually last?
Most disposals last 8 to 15 years with normal use. Frequent jams, repeated reset button pops, or leaks are signs the unit is wearing out. If your disposal is more than 10 years old and stops working, replacement is often more practical than repair.
Is it safe to put my hand in the disposal to clear a jam?
No. Even with the power off, the blades are sharp and can cause serious cuts. Always use tongs, pliers, or a wooden tool to reach in. Keep your fingers out of the opening entirely.
Why does my disposal work sometimes but not other times?
This usually means the reset button is loose or the motor is failing intermittently. It can also happen if the disposal is partially jammed — the motor can push through small blockages but gets stuck on larger ones. If this happens repeatedly, the unit is likely near the end of its life and should be replaced soon.