No Power. If your garbage disposal does not turn on or make any noise when you flip the switch, it could indicate a burnt-out motor. Before concluding that the motor is the problem, ensure that the unit is properly connected and the circuit breaker is not tripped.
Humming Sound
The humming (or sometimes buzzing) sound that your garbage disposal makes is an indication that there is power coming into the unit but the blades are not turning. The humming sound can be a sign that the motor is clogged or jammed resulting in its failure to grind.
The most common cause is an overload or jam, where foreign objects or a buildup of food scraps obstruct the grinding mechanism or cause slow drainage. In such cases, the disposal's safety feature triggers a shut-off to prevent damage or motor burnout.
With regard to life expectancy, garbage disposal units typically last for around 10 to 12 years. As with any appliance, careful maintenance can extend a disposal's lifespan.
The repair process just tends to be more expensive than it's worth. In the event that a garbage disposal does begin to seriously malfunction, it's almost always more cost-effective to simply replace it.
If your garbage disposal hums but doesn't turn, you know that the appliance is receiving power – it's just not operating correctly. Often, a clog or jam in the motor is the cause when you experience such symptoms.
A ⅓ or ½-horsepower (HP) motor may be priced anywhere from $50 to $225. This should be an adequate size for a small household of a couple of people. A more powerful garbage disposal for a bigger household with five or six people may need 1 HP. This can range from $200 to $400.
Checking the Motor
Try switching the circuit breaker on and off, then turn the garbage disposal on to see if it works. As always, avoid placing your fingers near the disposal. You can also use a special wrench designed for garage disposals to work on the blades at the bottom of your disposal.
If your garbage disposal won't turn on, one of the following reasons might be the cause: – Electrical issues: Either the power cord is unplugged, or something is wrong with the power source. – Clogged: Food or other objects are stuck in the drain. – Broken motor: The motor is dead.
The cost of garbage disposal replacement is $550 on average, though it can range between $150 and $950. The majority of the cost is for the garbage disposal itself, but labor can also greatly impact the total price tag. Using the garbage disposal helps keep your sink clean and your plumbing in good shape.
In most cases, you can still use the sink even if the garbage disposal or the sink sprayer is malfunctioning.
Installing or replacing a garbage disposal as a DIY project is not an overly complicated task.
Overheating: The disposal will shut off the blades if it becomes overheated. Overheating stems from constant overuse of the machine. Worn-out grinder: Over time, the grinder will wear down and won't cut as well. Clogged grinder: The interior grinder in the disposal may become jammed with waste.
A burning smell is often a sign that the motor is overheating or burning out. Turn off the power immediately and unplug the unit. Allow it to cool, and then check for any jams or other issues. If the smell persists, the motor may be damaged, and you should contact a professional for assistance.
How Many Years Do Most Garbage Disposals Last? Most modern garbage disposals will last anywhere from 8 to 15 years. An average household with four or five family members can expect to replace their disposal roughly every 12 years if properly maintained.
A jammed garbage disposal is one of the top reasons to call a plumber, but should you justify the cost? The answer is yes. As long as there isn't any structural damage to the unit, the disposal should work like new once a plumber fixes it. Expect to pay anywhere from $75-100 to have your system running again.
A Jammed Disposal
Jammed blades are often to blame when your garbage disposal is humming but not working properly. Determine whether your disposal is jammed by following these steps: Turn off power to the disposal. You can simply flip the switch to the OFF position, but we suggest also unplugging the disposal.
Press the garbage disposal reset button on the bottom of the unit, then try to switch on the unit. Check your main electrical panel to see if the circuit breaker to which the device is connected has tripped. If none of these solve the problem, the garbage disposal installation wiring needs checking.
The most likely cause is no power to the unit. Most disposals have a "reset" button on the bottom or side of the unit which acts as a built-in circuit breaker. Depress this button to reset the unit. If that does not help, try resetting the designated circuit breaker on your electrical panel.
A squealing sound coming from your disposal is indicative of a larger problem. The moment you hear your disposal squealing, it is best to turn it off and unplug it immediately. A squealing sound might mean the motor of the disposal is failing.