A working garbage disposal is a big help in the kitchen. It grinds up food scraps and keeps your sink clean. But when it stops working, it can cause smells, clogs, and stress. Many homeowners face issues with their kitchen garbage disposals every year.
Sometimes the fix is easy. Other times, you may need help. In this guide, we’ll look at the most common garbage disposal problems, how to fix them, and when to call in a pro. We’ll also give tips to keep your unit running smoothly. Let’s get started.
Common Problems with Garbage Disposals
Why is my garbage disposal humming but not spinning?
One of the most common issues is when the disposal hums but doesn’t spin. This usually means something is stuck inside.
Problem: The flywheel may be jammed. If it can’t turn, the motor makes a humming sound.
Solution: First, turn off the power. Then use an Allen wrench in the slot underneath the unit to turn the flywheel manually. This might clear the jam. After that, press the red reset button to restart it.
What causes foul smells in garbage disposals?
Bad smells from your sink can make the whole kitchen stink.
Problem: Leftover food stuck in the blades or drain can rot and smell bad.
Solution: Pour a half cup of baking soda and a cup of vinegar into the disposal. Let it bubble for 10 minutes. Then rinse with hot water. You can also grind up lemon peels for a fresh scent.
Why does water back up into the sink?
Backed-up water is messy and may even overflow.
Problem: A clog in the drain pipe or garbage disposal itself can cause this.
Solution: Try a plunger on the sink or use a plumbing snake to clear the clog. If that doesn’t work, check the P-trap under the sink and clean it out.
DIY Garbage Disposal Fixes
How do I reset my garbage disposal unit?
If your unit stops suddenly, it may just need a reset.
Solution: Look under the unit for a small red button. That’s the reset switch. Press it, wait a few seconds, then turn the unit on again.
Can I fix a garbage disposal that won’t turn on?
Sometimes, the disposal won’t make any noise at all.
Solution: Make sure it’s plugged in. Then check the circuit breaker in your electric panel. If everything looks fine, try the reset button. If it still doesn’t work, the switch or motor might be bad.
What should I do if my disposal leaks?
Leaks can cause water damage under the sink.
Solution: First, find out where the leak is coming from. If it’s leaking from the top, it could be a loose sink flange. If it’s the side, the hose connection might be loose. If it’s from the bottom, the unit may be cracked and need replacing.
When to Call a Professional
Are constant clogs a sign of a bigger issue?
If you’re plunging the sink every week, there may be a deeper problem.
Solution: Frequent clogs can mean your plumbing or disposal unit is not working right. A plumber can inspect the system and fix the root cause.
What if the disposal needs replacement?
Old units can wear out or break beyond repair.
Solution: If your disposal is over 10 years old or keeps having problems, it might be time for a new one. A pro can help you pick the right size and install it safely.
Preventative Tips for Garbage Disposal Maintenance
What foods should never go in the disposal?
Some foods can damage the blades or clog the drain.
Avoid putting these down your disposal:
- Grease or oil (it hardens and clogs pipes)
- Bones (can break the blades)
- Fibrous vegetables like celery and corn husks
- Coffee grounds (they clump and cause clogs)
- Eggshells (membranes wrap around the blades)
How to clean your garbage disposal regularly?
Cleaning it often helps prevent smells and clogs.
Solution: Drop a handful of ice cubes and rock salt into the disposal, then run it with cold water. Do this once a week. Or use baking soda and vinegar, followed by hot water. Grinding citrus peels also helps freshen it up.
When Garbage Disposal Repair Is Used
Garbage disposal repairs aren’t just for homes. They also matter in:
- Restaurants and cafeterias, where food waste builds up fast.
- Rental properties, where tenants may misuse the unit.
- Home inspections, especially when buying or selling a house.
- Kitchen renovations, when plumbing is being updated.
- Commercial kitchens, where large units may fail from overuse.
From fixing clogs in busy restaurants to upgrading old units in homes, repairs are a big part of keeping kitchens clean and safe.
Conclusion: Keep Your Garbage Disposal Running Right
A broken garbage disposal doesn’t have to ruin your day. Most issues like humming sounds, clogs, or bad smells have simple fixes. With some basic tools and know-how, you can handle many problems yourself. But if the issue keeps coming back or the unit is leaking badly, it’s smart to call in a pro.
Keep your disposal clean, avoid problem foods, and fix small issues early. That way, your kitchen sink stays fresh, clean, and working like it should. Whether you’re a homeowner or just trying to keep things running in a busy kitchen, a little maintenance goes a long way.
