Why Your Garbage Disposal Overheats
Garbage disposals have built‑in overload protectors that shut the unit off when the motor gets too hot. Overheating usually means the disposal is jammed, overloaded, or running longer than it should.
Most Common Causes of Garbage Disposal Overheating
1. Jammed Grinding Chamber
When food or foreign objects jam the blades, the motor strains and overheats quickly.
- Hard items (bones, pits, shells)
- Fibrous foods (celery, corn husks)
- Foreign objects (utensils, plastic pieces)
2. Running the Disposal Too Long
Disposals are designed for short bursts, not extended grinding. Running it for more than a minute can cause overheating.
3. Overloading the Disposal
Putting too much food in at once forces the motor to work harder and heat up.
4. Dull or Worn Impellers
When the impellers wear down, the disposal struggles to grind food, causing the motor to overheat.
5. Electrical Issues or Loose Wiring
Loose connections increase electrical resistance, which generates heat and triggers the overload protector.
How to Fix a Garbage Disposal That’s Overheating
1. Press the Reset Button
Most disposals have a red reset button on the bottom. If the unit overheats, the button pops out.
- Turn off the disposal
- Press the red reset button
- Turn the disposal back on
2. Clear Any Jams
Always disconnect power first. Use the included hex key (or a 1/4-inch Allen wrench) to rotate the motor manually and free the jam.
3. Run Cold Water While Grinding
Cold water helps solidify grease and keeps the motor cool.
4. Avoid Overloading
Feed food scraps slowly instead of dumping everything in at once.
5. Inspect for Foreign Objects
If you hear metal-on-metal sounds, something may be stuck inside. Remove it with tongs — never your hands.
Signs Your Garbage Disposal Is Overheating
- Unit shuts off mid-use
- Reset button pops out
- Burning smell
- Humming sound without spinning
- Motor feels hot to the touch
When to Call a Professional
If the disposal overheats repeatedly, the motor may be failing or the wiring may be unsafe. These issues require professional diagnosis.