Is Your Garbage Disposal Broken or Just Jammed?

A garbage disposal that hums but doesn't grind isn't broken — it's jammed. A disposal that clicks but doesn't hum at all might be tripped, not broken. A disposal that does nothing might just need a reset. Before you spend money on a new unit, here's the five-minute diagnostic flow I use on Bay Area service calls.

Step 1: hit the reset button

Look at the bottom of the disposal under the sink. There's a small red button — that's the overload reset. If the disposal is silent and unresponsive, this is the first thing to try. Push it firmly. Then flip the wall switch.

Step 2: check the breaker

If the reset doesn't bring it back, the breaker may have tripped. Bay Area kitchens often have the disposal on its own 15-amp circuit. Flip it fully off, then back on. Try the switch again.

Step 3: free a jam (the famous Allen wrench trick)

If the disposal hums when you flip the switch but the impellers don't move, something is jammed in the chamber. Most disposals ship with a hex/Allen wrench that fits the bottom-center socket of the unit. Insert it, work the wrench back and forth — you'll feel the impeller plate free up. If you've lost the wrench, a 1/4-inch Allen key from any hardware store works on most InSinkErator and Waste King disposals.

Important: turn the wall switch OFF before sticking anything in there. Even a hand. Especially a hand.

Step 4: pull out the jam

With the switch off, shine a flashlight into the disposal. The most common culprits we find: chicken bones, fruit pits, the plastic ring from a milk-jug cap, a metal twist tie, a spoon someone dropped, a chunk of corn cob. Pliers — never fingers — to remove. Hit the reset on the bottom. Try again.

What needs a pro

• Leaking from the bottom. The shell is cracked. The unit needs to be replaced.
• Leaking from the top. Sink-flange seal failed. Fixable, but the disposal has to come down for the repair.
• No hum, reset doesn't help, breaker is fine. The motor is dead. Replacement time.
• Smell that won't go away. Sometimes the splash guard needs replacement; sometimes the unit has biofilm in spots you can't reach. Worth a service call before replacing.

How long disposals last

Higher horsepower (3/4 HP and 1 HP) units last 10–12 years. Builder-grade 1/3 HP units common in Bay Area new construction often only make it 5–7 years. If you're replacing one, it's usually worth stepping up to a 3/4 HP — they're much quieter and grind nearly anything.

We do garbage disposal repair and replacement across the Bay Area, with a 3-month warranty on parts AND labor.

Disposal humming, jammed, or just dead? Call (650) 691-3065 and we'll get you back up today.