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Your garbage disposal stopped working, and you don’t know the cause of the problem. Before you dial a plumber or purchase a new garbage disposal, you can probably fix your existing one yourself in just a few minutes. We prepared this instruction that can help you to understand the common garbage disposal failures and how to troubleshoot them.
Quick Troubleshooting Reference
Use this table to identify your symptoms and find the right next step.
Start Here: The Reset Button
When your garbage disposal is not working, the first thing to do is resist the urge to keep flipping the switch. Running a jammed or overloaded disposal repeatedly can burn out the motor. Instead, start with the simplest fix: the reset button. This small red or black button sits on the underside of the disposal unit beneath the sink. When the motor overheats or the disposal trips from overload, it cuts power to itself as a safety measure. Press the reset button firmly until you feel it click, then try the switch again. This solves the problem more often than most homeowners expect.
Garbage Disposal Humming, But Not Working
A garbage disposal that hums but won’t work is usually jammed. The motor is receiving power and trying to run, but something is preventing the grinding plate from moving. Common culprits include a bone, a fruit pit, a piece of silverware, or too much food waste loaded in at once. To fix this, turn off the garbage disposal and unplug it. Never put your hand inside, even if it appears stuck. Most units come with a ¼-inch hex wrench that fits into a socket on the bottom of the disposal. Insert it and work it back and forth until the grinding plate moves freely. If you don’t have the original tool, a standard Allen key from any hardware store will do. Once the plate moves freely, use tongs or pliers — never your fingers — to remove the blockage. Then plug the unit back in, press the reset button, run cold water, and turn it on. If the grinding plate moves freely but the disposal is still humming without grinding, the grinding components are likely worn out. At that point, replacing the unit is usually a better choice than repairing it.
No Sound At All: Electrical Issues
When your garbage disposal won’t turn on or makes no sound at all, the problem is usually electrical. Start by checking that it's properly plugged in — the power cord sits inside the cabinet under the sink and can work itself loose without you noticing.
If it's plugged in, check your electrical panel for a tripped circuit breaker. Garbage disposals share a circuit with other kitchen appliances, so running several at once can trip the breaker.
To rule out an outlet issue, plug another appliance into the same outlet and see if it works. Keep in mind that many garbage disposal outlets are controlled by a wall switch and protected by a GFCI circuit. If a GFCI outlet elsewhere in the kitchen has tripped, it can cut power to the disposal as well. Check for any tripped GFCI outlets on the same circuit and reset them before trying the disposal again.
If none of that resolves the issue and you've already pressed the reset button on the unit itself, the problem likely lies with the internal wiring or motor. At that point, calling a professional or replacing the unit altogether is usually the best path forward.
Repair or Replace? How to Decide
Not every disposal problem is worth repairing. Here’s a straightforward way to think about it. If the unit is less than 8 years old and the issue is a jam, a tripped reset, or a loose connection, repair almost always makes sense — the fix is simple, and the unit has useful life left. If the unit is leaking from the bottom, the internal seals have failed, and repair is not practical — replacement is the right call. If the unit is 10 years old or older and has had repeated issues — frequent jams, intermittent power loss, or persistent odors that won’t clear — replacing it is usually a better investment than another repair visit. A new disposal installed by a licensed IRBIS Air, Plumbing & Electrical plumber typically runs $300–$350, depending on the unit and any drain or electrical work required. IRBIS offers same-day garbage disposal repair and installation in San Jose with no dispatch fee — so if you’re not sure whether to repair or replace, we can assess it on the spot and give you an honest recommendation.
Conclusion
Most of the time, a garbage disposal that isn’t working comes down to something straightforward: a jammed plate, a tripped reset, or a simple power issue. Work through each possibility before assuming you need a new unit. That said, if your disposal is more than 10–12 years old, has had repeated problems, or is leaking from the bottom, replacement is often the better investment than repair.
If you've worked through these steps and still can't get things running, the team at IRBIS Air Plumbing Electrical is ready to help. Call +1 (669) 312 3643 or reach out online to schedule an evaluation.
During a repair visit, our technicians will inspect your A/C system, diagnose the problem, and provide you with repair options. Once you choose an option, we'll proceed with the necessary repairs. Afterward, we'll test the system to ensure it's working correctly and provide you with a detailed report.
