Lexington, SC · Disposals, jams and leaks
Disposal humming, jammed or leaking? Garbage disposal repair and installation in Lexington, SC
A garbage disposal fails in three ways: it hums and does nothing, it will not turn at all, or it leaks under the sink. Each has a different cause and a different fix, and some are simple enough to try before calling anyone. Below is what garbage disposal repair & installation Lexington SC homeowners ask about comes down to: a reset, a clear, a new part or a new unit.
Call us and describe what the disposal does. One of our plumbers can tell you whether a reset or a clear will do, or whether the unit has reached the end of its life.
Disposal hums, jams or does nothing: reading the symptoms
A disposal that hums but does not spin is usually jammed. A hard object is wedged between the grinding plate and the wall of the chamber, and the motor is straining against it. A disposal that does nothing at all, with no hum, is often a tripped reset button or a dead outlet.
- Hum with no spin: a jam. Turn it off at the switch first.
- Silence: check the red reset button on the bottom and the outlet.
- Spins but drains slowly: a clog past the disposal, not a failure.
- Grinding noise: a spoon, a bone or a pit left in the chamber.
Most jams clear in minutes. Never put a hand into the disposal, even when it is off. Use tongs or pliers to pull out what you can see, and use the hex socket on the bottom of many units to turn the plate by hand and loosen a jam.
Where a disposal leaks and why it matters
A leak under the sink is one of the most common calls. The leak can come from the sink flange at the top, from a cracked body, from the drain connection or from the dishwasher hose. Where the water drips from, and when, tells the plumber which.
| Where it drips | Likely cause | Usual fix |
|---|---|---|
| At the sink flange | A worn seal or loose mounting ring | Reseat the flange with fresh putty or a gasket. |
| From the body | A cracked housing | Replace the unit. A body crack cannot be repaired. |
| At the drain elbow | A loose or worn connection | Tighten or replace the gasket and the elbow. |
| At the dishwasher hose | A loose clamp or cracked hose | Replace the clamp or the hose. |
Fix a leak promptly. Water in the sink cabinet swells particleboard and can feed mold. If the cabinet floor is wet, dry it and tell the plumber, because that may change what else needs attention.
A leak that only shows while the dishwasher runs points to the dishwasher hose or the drain connection on the disposal, not to the disposal body. Run each source on its own, with a dry towel underneath, and note which one makes the drip. That one test often saves a replacement the unit did not need.
Repair or replace the disposal
A jam or a tripped reset is a quick fix on a healthy unit. A cracked body, a seized motor or a unit that keeps jamming is a replacement. The age of the unit matters too: an older disposal that needs a part may be near the end of its life anyway.
- Repair when the problem is a jam, a reset, a hose or a gasket.
- Replace when the housing is cracked or the motor has failed.
- Replace when repairs have piled up on an old unit.
- Ask for both options in writing with what each includes.
A new disposal comes in several motor sizes, and a bigger motor handles more but costs more and needs more room under the sink. A household that cooks every day and uses the disposal heavily may want a larger unit, while a small kitchen may be fine with a basic model. Ask what size is being proposed and why.
What never goes down a disposal
Most disposal calls start with something that should have gone in the trash. Grease coats the drain and hardens, and fibrous food can wrap the grinding plate. The result looks like a failed disposal and is often a clog in the pipe past it, which is a job for kitchen drain clearing.
- Grease, oil and fat.
- Coffee grounds in large amounts.
- Celery, corn husks and potato peels.
- Bones, fruit pits and shells.
- Pasta, rice and bread, which swell.
Run cold water while the disposal runs and for a few seconds after. The water carries the ground food through the drain line rather than letting it settle in the pipe.
Installing a new disposal
A replacement sounds simple, but the details matter. The new unit must fit the mounting, connect to the drain and, if there is a dishwasher, connect its hose. A dishwasher knockout plug inside the new unit must be removed, or the dishwasher will not drain.
Ask the installer to check the electrical connection and the outlet. Many units plug into an outlet under the sink, while others are wired in. A plumber should not guess at wiring, so say so if the existing setup looks unusual.
Allow for old parts. The mounting ring, the drain elbow and the gasket may all be worn, and replacing them during the swap beats finding a leak a week later. Ask the installer to run water and the dishwasher with the new unit in place and to check every joint for dampness before they leave.
If the sink itself needs work at the same time, our page on sink and faucet repair covers fixtures. For the cost items that move a quote, see disposal cost factors.
Safety, permits and the plumber you hire
Turn the disposal off at the wall switch and, for any work inside, unplug it or switch off its breaker. A disposal that starts while a hand is in it can cause a serious injury. This is the single most important rule on the page.
Keep the unit clear of hard objects and hold off on chemical drain cleaners in a disposal that is jammed, since the chemicals sit in the chamber and splash when the unit is opened. If a smell is the only complaint, ground ice and citrus peel cleans the chamber without harm. A smell that persists after that usually comes from the drain trap or the pipe beyond it.
Lexington County exempts ordinary repairs from permits and requires them for installing or replacing plumbing systems, so ask whether a plain swap needs one. Check the license holder on the state license lookup before work begins, and see disposal questions answered for what to expect on a visit.
Disposal not working?
Call us and tell us what it does when you switch it on. One of our plumbers can tell you the likely fix.
Call (833) 571-0120