To stop this from happening again, avoid these common mistakes:
Is your InSinkErator humming, silent, or smoking? Feel the bottom—is it scorching hot?
If you’ve just finished running hot water and grinding leftover pasta, only for your disposal to suddenly die, you are likely dealing with the unit’s internal thermal overload switch. This is a safety feature, not a death sentence.
When an InSinkErator garbage disposal gets hot, it is usually a sign of four things: a jammed impeller, a tripped circuit breaker, a faulty motor, or simple user error (running hot water while grinding).
Before you call a plumber or buy a new $300 unit, follow this step-by-step guide to diagnose, cool down, and fix your hot InSinkErator garbage disposal. how to fix a insinkerator garbage disposal hot
For InSinkErator, typical lifespan is 8–12 years. Overheating often signals the end if jams aren’t the cause.
✅ Pro tip: Always run cold water 15 seconds before, during, and 15 seconds after grinding. Cold water solidifies grease so it can be chopped, and keeps the motor cool.
If the unit is not hot, but simply not working, follow these steps:
1. Check the Reset Button InSinkErators have a built-in breaker that trips when the motor is overloaded. To stop this from happening again, avoid these
2. Check the Power Source
The most common mistake is pressing the reset button immediately. If the motor is still hot, the thermal switch will just trip again.
Wait 20 minutes. Put a fan on the disposal if you want to speed up the process. The unit should feel warm, not burning hot, before you proceed.
If your disposal feels hot to the touch or is humming but not spinning, the motor has likely overheated or the flywheel is jammed. For InSinkErator, typical lifespan is 8–12 years
1. Safety First Turn off the power immediately. Unplug the unit from the wall outlet under the sink. If it is hardwired, turn off the breaker at your electrical panel.
2. Check for a Jam If the flywheel is stuck, the motor tries to spin, overheats, and shuts down.
3. Reset the Motor Once the jam is cleared, let the unit cool down for 5–10 minutes.
Rare, but yes. A locked rotor motor can overheat enough to melt wiring insulation, potentially sparking a fire inside the cabinet. This is why the thermal overload exists. Never bypass the reset button.
If the button stays in, you have successfully reset the thermal switch.
