Garbage Disposal Not Working? Here's How to Fix It: Top 10 Problems & Solutions

A properly functioning garbage disposal is essential for a smooth kitchen experience. But what happens when your disposal stops working? Whether it hums, leaks, or refuses to turn on, we've compiled the top 10 problems and practical solutions to get your garbage disposal back in action.

1️⃣ Garbage Disposal Not Turning On

Problem: Your garbage disposal doesn't respond when you flip the switch.

Common Causes:

👉 Power supply issues

👉 Faulty switch or circuit breaker

👉 A tripped reset button

Solution:

✅ Ensure the disposal is plugged in properly.

✅ Check the circuit breaker for a tripped switch.

✅ Locate and press the reset button on the unit. Wait 10 seconds before trying again.

Pro Tip: If the reset button keeps tripping, it could indicate an internal motor issue that may require professional attention.

2️⃣ Garbage Disposal Humming But Not Grinding

Problem: The disposal hums but doesn't grind food.

Common Causes:

👉 The flywheel is jammed

👉 The motor is overheated

👉 Impellers are stuck

Solution:

✅ Turn off and unplug the disposal.

✅ Use a hex wrench (Allen key) to rotate the flywheel through the hole at the bottom manually.

✅ Once loosened, press the reset button and restart the unit.

Pro Tip: Avoid overloading your disposal to prevent jams and motor overheating.

3️⃣ Garbage Disposal Won't Drain

Problem: Water backs up into the sink.

Common Causes:

👉 Food particles clogging the pipes

👉 Grease and oil buildup

Solution:

✅ Turn off the disposal.

✅ Use a plunger to dislodge the clog.

✅ Clean the P-trap located under the sink.

Pro Tip: Prevent clogs by avoiding greasy foods, coffee grounds, and fibrous vegetables at your disposal.

4️⃣ Loud Noises but No Grinding

Problem: The disposal makes loud grinding, screeching, or rattling noises.

Common Causes:

👉 Foreign objects like metal or plastic stuck in the impeller.

👉 Worn-out motor bearings.

Solution:

✅ Turn off and unplug the disposal.

✅ Use pliers to remove any foreign objects.

✅ If the noise persists, the motor may need to be replaced.

Pro Tip: Always check for utensils or foreign objects before turning on the disposal.

5️⃣ Garbage Disposal Leaking from Reset Button

Problem: Water drips from the bottom of the unit.

Common Causes:

👉 Worn-out internal seals

👉 Cracked housing unit

Solution:

✅ Identify the exact point of the leak.

✅ Replace the worn seals or the entire unit if needed.

Pro Tip: Address small leaks early to avoid more serious plumbing issues later.

6️⃣ Garbage Disposal Not Spinning

Problem: The motor runs, but the blades don't spin.

Common Causes:

👉 Jammed flywheel

👉 Damaged motor or impeller

Solution:

✅ Turn off and unplug the unit.

✅ Use a hex wrench to rotate the flywheel manually.

✅ Remove any debris stuck in the blades.

Pro Tip: Avoid grinding bones or hard fruit pits to reduce wear on the motor.

7️⃣ Garbage Disposal Smells Bad

Problem: A foul odour emanates from the disposal.

Common Causes:

👉 Food residue buildup

👉 Bacteria growth

Solution:

✅ Run cold water and grind lemon peels or a baking soda and vinegar mixture.

✅ Clean the splash guard area using a long brush.

Pro Tip: Always run cold water for 30 seconds after each use to flush out remaining debris.

8️⃣ Garbage Disposal Stops After a Few Seconds

Problem: The unit starts but turns off quickly.

Common Causes:

👉 Overheating motor

👉 Electrical faults

Solution:

✅ Let the motor cool down before restarting.

✅ Press the reset button.

✅ Inspect for loose wiring or connections.

Pro Tip: If this issue persists, consult a professional.

9️⃣ Garbage Disposal Air Switch Not Working

Problem: The air switch fails to activate the disposal.

Common Causes:

👉 Faulty air switch tubing

👉 Broken switch mechanism

Solution:

✅ Inspect the tubing for damage.

✅ Replace the air switch if needed.

Pro Tip: Keep the air switch clean and dry to prevent malfunctions.

🔟 When Should You Replace Your Garbage Disposal?

Problem: Frequent malfunctions and persistent leaks.

Common Causes:

👉 The disposal unit is over 10 years old

👉 Motor failure

Solution:

✅ Compare repair costs with replacement costs.

✅ Invest in a newer, more efficient model.

Pro Tip: Look for disposals with stainless steel components for durability.

Preventive Maintenance Tips for Garbage Disposal

👉 Avoid grinding fibrous vegetables, grease, or bones.

👉 Run cold water during and after use to flush debris.

👉 Clean with baking soda and vinegar monthly.

👉 Regularly inspect for leaks and wear.

Still Having Trouble? Get Expert Assistance!

Addressing these common garbage disposal issues with our step-by-step guide saves you time and money. For persistent problems, don't hesitate to consult a professional.