Garbage Disposals
A garbage disposal is a small motor doing rough work in a wet place, and its failure modes are so consistent they are almost friendly: it hums, it trips, it jams, it leaks, it dies. Each symptom maps to a short list of causes, and the humming-versus-silent distinction alone answers half the diagnosis.
This section covers disposal repair, replacement and new installation, plus the drain-side reality that many 'disposal problems' are actually sink-drain clogs wearing a disguise.
Our Services
Signs You Need This Service
Disposal symptoms, decoded:
- Hums but does not spin. A jam: something is holding the plate. Power off, then the hex-key crank and tong extraction. Never a hand in the chamber.
- Completely silent. No power, a tripped reset button underneath, or a dead motor, in that order of hope.
- Trips the reset or breaker repeatedly. An overloaded or failing motor, or an electrical fault. Repeated resets are diagnosis, not maintenance.
- Leaking from the top ring. The sink-flange seal: mounting and putty work.
- Leaking from the side connections. Dishwasher inlet or drain-elbow gaskets, which are repairable connections.
- Leaking from the bottom. Internal seals gone. That is the unit's obituary, not a repair.
- Drains slowly or backs up. Usually the sink drain beyond the disposal, not the unit. The trap and branch line get the attention.
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Common Causes
Repair or replace? The disposal rules:
- Jams and resets are maintenance. Freeing a jam and resetting an overload are service events, not death notices.
- Connection leaks are repairs. Flange, gasket and hose-connection leaks rebuild fine.
- Bottom leaks and dead motors are replacements. Internal seal failure and burned motors end the unit. Replacement money beats repair money immediately.
- Age tilts the scale. A decade-old builder-grade unit with any real failure is a replacement; better units earn their repairs longer.
Service Details & What's Included
The work this section covers:
- Repair. Unjamming, connection and flange leak repair, and honest condition verdicts while the wrench is out.
- Replacement. Like-for-like or upgraded units: mounting, drain and dishwasher connections, leak test, and disposal of the old unit.
- New installation. First-time installs including drain reconfiguration and the electrical coordination the switch side requires.
Frequently Asked Questions
Why does the disposal hum but not spin?
It is jammed: the motor is energized but the plate is blocked. Cut power, crank the hex socket underneath to free it, remove the object with tongs, reset, test. If it still hums freely unloaded, the motor or capacitor has failed.
Why is it leaking, and does location matter?
Location is the diagnosis. Top ring: sink flange seal. Side: dishwasher or drain connections. Bottom: internal seals, which means replacement. A paper towel and a flashlight answer it in a minute.
Is 'not draining' a disposal problem or a clog?
If the motor spins normally but water stands, the blockage is almost always past the unit, in the trap or branch line. That is drain cleaning territory; the disposal was just the messenger.
When should a disposal be replaced instead of repaired?
Bottom leaks, dead or repeatedly tripping motors, and any significant failure on an old entry-level unit. Repairs are for jams and connections. The moment internals fail, replacement wins the math.
Who handles the switch and wiring side?
The disposal's plumbing (mounting, drains, hoses) is this section's work; fixed wiring and switch faults belong to an electrician. Plug-in units keep the border simple; hardwired ones occasionally need both trades.
Disposal Service
Report the symptom in the unit's own language (humming, silent, tripping, leaking, and from where), plus its rough age. The repair-or-replace answer follows fast.
Request a Quote for Garbage Disposalsor call (800) 555-0147Only license-checked plumbers who cover your ZIP receive your request.