A garbage disposal is one of those kitchen appliances you may not think much about—until it suddenly stops working. If you flip the switch and hear a humming sound but the disposal doesn’t grind, or if your unit seems to jam repeatedly, there’s usually an underlying problem that needs attention.
For homeowners in Chino, Rancho Cucamonga, Ontario, Covina, Corona, and surrounding Southern California communities, a jammed garbage disposal can quickly turn into a clogged sink, unpleasant odors, or a larger kitchen plumbing problem.
Here’s what may be causing your garbage disposal to hum or jam, what you can safely check yourself, and when it’s time to call a plumber.
Why Is My Garbage Disposal Humming but Not Spinning?
If your garbage disposal makes a humming noise when you turn it on but the grinding mechanism doesn’t move, the motor is likely receiving power but the disposal itself is stuck.
Common causes include:
- Food or debris lodged inside the disposal
- A hard object caught in the grinding chamber
- A seized or stuck grinding mechanism
- An overloaded motor
- Internal components beginning to fail
A humming disposal should not be left running. Continuing to supply power while the mechanism is stuck can overheat the motor and potentially turn a relatively simple jam into a disposal that needs to be replaced.
If the problem doesn’t have an obvious solution, JIG Plumbing’s residential plumbing services can help determine whether the disposal can be repaired or whether replacement makes more sense.
Why Does My Garbage Disposal Keep Jamming?
A disposal that jams once may have encountered an unusual object. A disposal that keeps jamming can point to a larger problem.
Too Much Food Is Going Into the Disposal at Once
Garbage disposals work best when food waste is introduced gradually. Packing large amounts of food into the drain can overwhelm the unit and prevent the grinding components from moving freely.
Instead of forcing everything through at once, feed small amounts into the disposal while water is running.
The Wrong Foods Are Going Down the Disposal
Despite the name, a garbage disposal isn’t designed to handle every type of kitchen waste.
Foods that can cause problems include fibrous vegetables, grease, fats, large bones, fruit pits, coffee grounds, and large amounts of starchy foods such as pasta or rice.
The U.S. Environmental Protection Agency also recommends keeping grease out of food disposal systems because it can contribute to clogged plumbing over time. The EPA recommends scraping larger food scraps into the trash or composting them when appropriate rather than sending everything down the drain. Read the EPA’s guidance on food waste disposal.
A Foreign Object Is Stuck Inside
Silverware, small pieces of plastic, bottle caps, glass, jewelry, and other hard objects can accidentally fall into a disposal.
If you believe something is stuck inside, turn the disposal off and disconnect power before inspecting it. Never put your hand into the disposal.
If you can’t safely remove the obstruction, calling a professional is much safer than continuing to operate the unit.
Can a Clogged Drain Make a Garbage Disposal Stop Working?
Yes. Sometimes the disposal itself isn’t the only problem.
Food waste, grease, soap residue, and other debris can accumulate in the kitchen drain downstream from the disposal. Water may begin draining slowly, backing up into the sink, or producing gurgling noises.
If you repeatedly experience disposal jams along with slow drainage, the issue may actually be inside your drain line.
Professional drain cleaning in Chino and surrounding areas can remove buildup and help determine whether the disposal or the drain is responsible for the recurring problem.
What Should You Do if Your Garbage Disposal Is Humming?
The first step is to turn it off immediately.
Then:
- Turn off power to the disposal at the switch and, for added safety, at the breaker.
- Look into the disposal using a flashlight.
- If you can see an obstruction, don’t reach inside with your hand.
- Check whether your disposal has a reset button on the bottom of the unit.
- If the disposal remains stuck or continues humming, leave it off and contact a plumber.
Some disposals also have a manual turning mechanism on the bottom that can be operated with the manufacturer’s specified wrench. If you’re unsure how your particular model works, check the owner’s manual rather than forcing the mechanism.
Why Does My Garbage Disposal Keep Tripping the Reset Button?
Most garbage disposals have an overload protector designed to shut the motor off if it overheats or encounters excessive resistance.
If the disposal repeatedly trips the reset button, possible causes include:
- A persistent jam
- Too much food entering the disposal
- An overheating motor
- Electrical problems
- A failing disposal motor
Resetting the unit repeatedly without addressing the underlying problem isn’t a long-term solution. If the reset continues to trip, have the disposal inspected.
When Should a Garbage Disposal Be Replaced?
Not every disposal problem requires a new unit. Many jams can be cleared and minor problems repaired.
Replacement may make more sense when:
- The disposal frequently jams despite proper use
- The motor hums but won’t operate even after the jam is cleared
- The disposal leaks from the body of the unit
- You notice persistent grinding or metallic noises
- The unit frequently needs to be reset
- Repairs are becoming more frequent
- The disposal is older and showing multiple signs of wear
A plumber can inspect the disposal and help you compare the cost of repair with installing a new unit.
How Can You Prevent Garbage Disposal Jams?
A few simple habits can help your disposal operate more reliably.
Run cold water while using the disposal and continue running it briefly after grinding is complete. Put food into the disposal gradually rather than filling it all at once, and keep grease, fibrous food, bones, and hard objects out of the drain.
It’s also a good idea to use a sink strainer when you’re not actively using the disposal. This can help keep silverware, bottle caps, and other objects from accidentally falling into the grinding chamber.
If you experience recurring clogs elsewhere in the kitchen or throughout your home, JIG Plumbing also offers a full range of plumbing services in Chino, CA to identify problems beyond the disposal itself.
Get Help With a Jammed Garbage Disposal in Chino, CA
A garbage disposal that occasionally needs attention may not be a major concern. But if your disposal keeps jamming, hums without spinning, repeatedly trips its reset button, or causes your kitchen sink to back up, it’s worth having the problem professionally diagnosed.
JIG Plumbing provides plumbing services throughout Chino, Rancho Cucamonga, Ontario, Covina, Corona, and surrounding Southern California communities. Whether the problem is a stuck disposal, a clogged kitchen drain, or another plumbing issue, an experienced plumber can identify the cause and recommend the right solution.
If your garbage disposal isn’t working properly, contact JIG Plumbing to schedule service and get your kitchen plumbing working properly again.
