Silence the noise: quick tips to resolve garbage disposal humming
What To Know
- The flywheel is a heavy disc that stores energy and helps the disposal grind food waste.
- Electrical problems, such as a faulty switch or wiring, can also cause a garbage disposal to hum but not grind.
- If you’ve tried the above solutions but your garbage disposal is still humming and not grinding, it’s best to call a plumber.
When your garbage disposal starts humming but fails to grind, it can be a perplexing and frustrating experience. Understanding the root cause of this issue is crucial for resolving it effectively. In this comprehensive guide, we’ll delve into the various reasons why garbage disposals hum and provide practical solutions to restore their grinding functionality.
Clogged Disposal
Garbage disposals rely on impellers to grind food waste. When these impellers become clogged with debris, they can’t rotate properly, resulting in a humming sound but no grinding action. Common culprits include:
- Food scraps
- Grease
- Small objects (e.g., silverware, bones)
Motor Failure
The motor is the heart of the garbage disposal, providing the power for grinding. If the motor fails, the disposal will not grind at all, but it may still hum. Signs of motor failure include:
- Burning smell
- Grinding noise followed by a sudden stop
- No response when the switch is turned on
Reset Button Tripped
Garbage disposals have a reset button that trips when the motor overheats or becomes overloaded. This prevents damage to the motor. If the reset button has tripped, the disposal will hum but not grind.
Air Lock
An air lock occurs when air gets trapped in the disposal’s drain line. This can prevent water from draining properly, causing the disposal to hum and struggle to grind.
Worn or Damaged Impellers
Over time, the impellers in the disposal can become worn or damaged. This can affect their ability to grind food waste effectively, leading to humming and reduced grinding performance.
Broken Flywheel
The flywheel is a heavy disc that stores energy and helps the disposal grind food waste. If the flywheel is broken, the disposal will not grind and may only hum.
Electrical Issues
Electrical problems, such as a faulty switch or wiring, can also cause a garbage disposal to hum but not grind. It’s important to check for any electrical issues before attempting repairs.
How to Fix a Humming Garbage Disposal
1. Check for Clogs: Remove the splash guard and check for any clogs. Use a pair of pliers or tongs to remove debris.
2. Reset the Disposal: Press the reset button located on the bottom of the disposal.
3. Clear an Air Lock: Pour a cup of baking soda followed by a cup of vinegar down the drain. Let it sit for 15 minutes, then flush with hot water.
4. Inspect the Impellers: If the impellers are worn or damaged, they may need to be replaced.
5. Check the Flywheel: If the flywheel is broken, it will need to be replaced.
6. Troubleshoot Electrical Issues: If you suspect electrical issues, contact a qualified electrician.
When to Call a Plumber
If you’ve tried the above solutions but your garbage disposal is still humming and not grinding, it’s best to call a plumber. A professional plumber can diagnose the issue accurately and perform any necessary repairs or replacements.
Summary: Restoring Harmony to Your Garbage Disposal
By understanding the various reasons why garbage disposals hum and taking appropriate action, you can restore their grinding functionality and keep your kitchen sink running smoothly. Remember, if the problem persists or you’re not comfortable performing repairs yourself, don’t hesitate to contact a qualified plumber for assistance.
What You Need to Know
Q: Why does my garbage disposal hum after I reset it?
A: The reset button may have tripped again due to an ongoing clog or electrical issue.
Q: How often should I clean my garbage disposal?
A: Regularly cleaning your garbage disposal with baking soda and vinegar helps prevent clogs and odors.
Q: Is it safe to put bones in the garbage disposal?
A: No, bones should not be put in the garbage disposal as they can damage the impellers.
Q: Can I use a drain cleaner to unclog my garbage disposal?
A: Avoid using chemical drain cleaners as they can damage the disposal’s components.
Q: Why does my garbage disposal hum when I turn on the water?
A: An air lock may be preventing water from draining properly. Try clearing the air lock by pouring baking soda and vinegar down the drain.
