When a disposal problem is an emergency
A disposal leaking from the body or the drain flange puts water into the cabinet, and a disposal that backs up the sink can overflow onto the counter. Turn off the disposal at its wall switch and unplug it or switch off the breaker before reaching in.
Never put a hand in the disposal, even when it is off. Use tongs or pliers to remove an object. Call (714) 750-8637 if water is escaping. The line is open 24/7, and a plumber will repair or replace the unit.
Why disposals fail
A hum without motion means the flywheel is jammed, and most jams clear with a hex key turned from the bottom of the unit. A dead unit with no hum is usually the reset button or a tripped breaker. Leaks come from the sink flange seal, the dishwasher inlet, the drain outlet or a crack in the housing.
Grease and fibrous food, such as celery and potato peel, are common causes of both jams and slow drains. A disposal is not a trash can, and the line below it still has to carry what it grinds.
Common symptoms and causes
Match the symptom to the likely cause.
Hums, does not spin
Jammed flywheel. Safe to free with the unit off and unplugged.
Completely dead
Reset button tripped, breaker off or a failed motor.
Water under the unit
Failed seal, loose connection or cracked housing. A cracked housing means replacement.
Foul odor
Buildup on the grinding chamber or a slow drain below.
Repair or replace?
Age and the type of fault guide the call.
| Situation | Usually repair | Usually replace |
|---|---|---|
| Jam | Clear and test | Repeated jams with weak motor |
| Leak at flange or inlet | New seal or gasket | Cracked housing |
| Dead unit | Reset, wiring check | Burnt-out motor |
| Age | Under about 8 years | Over about 10 years and failing |
Disposal leaking under the sink?
Switch it off and call the 24/7 line.
Backups that look like disposal problems
If water rises in the sink when the disposal runs, or if it comes up in the other basin, the clog may be in the drain line below. The disposal does not fix a blocked line, and running it can make a mess. See our drain cleaning page for how the kitchen line is cleared.
A dishwasher that drains into the disposal can also back up into the dishwasher. If the dishwasher fills with dirty water, tell the plumber when you call.
Installing a new disposal
A replacement is usually a same-visit job: the old unit is disconnected, the mounting ring is reset, and the new unit is wired or plugged in, connected to the drain and tested. If you want a disposal where none exists, an electrical outlet and a wall switch are needed, and the plumber will tell you if that requires an electrician.
Horsepower, sound insulation and continuous or batch feed are the main choices. A larger motor helps with tough waste but does not replace good habits.
What disposal repair costs
A reset and a new unit are different jobs. You hear a clear price before work starts.
What moves the final number
A leaking unit that damaged the cabinet floor may need carpentry that we do not provide. Call (714) 750-8637.
Electrical and drain rules
Disposal wiring follows the California Electrical Code, which is based on the National Electrical Code (NEC), and the drain connection follows the California Plumbing Code, based on the Uniform Plumbing Code (UPC). A dishwasher drain that enters the disposal should loop high or use an air gap, a detail the plumber checks.
What not to grind
Grease, coffee grounds in quantity, pasta and rice that swell, bones, fibrous vegetables and fruit pits all cause trouble. Run cold water while the unit operates and for 15 seconds after.
Ice cubes and citrus peel freshen a unit but do not fix a deep clog.
Common Questions
Yes. Call (714) 750-8637 at any hour if a disposal is leaking into a cabinet or backing up the sink. Switch it off first.
The flywheel is jammed. With the unit off and unplugged, a hex key in the bottom socket can usually free it.
Chemical cleaners can damage seals and splash back at the user. Ask a plumber before using them.
Usually yes. A switch and an outlet are required, and the plumber will tell you if an electrician is needed.
Many last around 8 to 12 years depending on use and what goes down them.
The drain line below is probably clogged. The disposal itself may be fine.