Allentown, PA and the Lehigh Valley
Garbage Disposal Repair and Replacement in Allentown, PA
When you call about a disposal, the dispatcher asks three things: what the unit does when you flip the switch, whether it leaks, and whether the sink drains. Those answers decide whether a reset, a repair or a replacement is next. A licensed and insured plumber then confirms what is possible for your kitchen.
- Licensed and insured plumbers
- Same-day service when available
- 24/7 emergency dispatch

Garbage disposal installation and replacement: when the old unit is done
A disposal that leaks from its body, rusts through or has a failed motor is replaced, not repaired. A plumber removes the old unit, cleans the sink flange, mounts the new disposal, connects the discharge and the dishwasher inlet and wires or plugs it in as the setup allows. New installations in a sink that never had one need a power source and a switch, which may involve an electrician.
Size and horsepower matter less than a good fit with the sink and the drain. Check that the new unit clears the cabinet and the trap, and ask whether a cord kit or hardwire connection is used. The plumber tests the unit with water running and checks every joint for leaks.

Garbage disposal repair: what can be fixed and what cannot?
Jammed, humming and stuck units are often fixable. The flywheel can be turned loose with a hex key from beneath, the reset button pressed and the unit tested. A unit that is dead may need a reset, a new cord or a new switch. A loud grinding sound can mean an object is caught or the shredder is damaged.
| Symptom | Likely cause | What helps |
|---|---|---|
| Hum, no spin | Jam or stuck flywheel | Power off, turn the flywheel with a hex key, press reset |
| Nothing at all | Tripped reset, breaker or switch | Check reset button, breaker and switch |
| Slow drain or standing water | Clog in the trap or branch line | Clear the line, check the trap |
| Leak at the top | Sink flange seal | Reseat the flange with new putty or gasket |
| Leak from the side or bottom | Cracked body or failed seal | Usually replacement |
| Bad smell | Food buildup or dry trap | Clean the chamber, flush the trap |
Disposal humming, leaking or backed up? Call and say which. A short description helps the dispatcher.
Disposal not working? Call now
Describe the sound and any water on the cabinet floor. The dispatcher tells you what is available for your address.
A leaking disposal: where the water comes from
Water under the sink is easy to blame on the disposal, but the source can be the faucet, the supply lines or the drain trap. Dry the cabinet, place a sheet of paper towel underneath and run each source in turn. A leak that appears only when the disposal runs points to the unit or the hose connections.
Check the dishwasher hose, the discharge pipe, the sink flange and the body. If the leak is at the body or the unit is old, replacement is the answer. If the leak is at a connection, the plumber can tighten, reseal or replace the hose and gasket. Water left in the cabinet for long can damage the wood, so dry it promptly and watch for mold.

Clogs, backups and the dishwasher connection
A disposal feeds the same drain as the kitchen sink, so a blockage can back up into one or both basins and into the dishwasher. Grease, fibrous food and starchy scraps such as pasta and rice are common causes. Clearing the trap often fixes it, and a cable through the branch line handles the rest.
The dishwasher drain line usually connects to a port on the disposal or to a separate air gap. If the dishwasher does not drain, check whether the knockout plug was removed when a new disposal was installed. This small detail causes many new installation problems. For a repeating kitchen clog, the clog clearing page explains jetting and camera checks.
- Run cold water while the disposal operates
- Avoid grease, coffee grounds in bulk, bones and fibrous peels
- Clean the chamber with ice and citrus peel only if the maker allows
- Keep a hex key for the flywheel where you can find it

Water under the sink and not sure why?
Call and describe where it shows up. A plumber can sort a disposal leak from a faucet or supply line leak.
Sewer, drains and where your disposal sends its waste
A disposal sends waste into the same sewer system as every other drain. In much of the area that means a municipal or authority sewer. Whitehall Township, for example, is served by the Coplay-Whitehall Sewer Authority, and other towns differ. Rules on what may enter the system can vary, so ask your municipality or authority if you have questions.
If sewage backs up into the sink rather than ordinary kitchen waste, the main line may be the cause. In that case stop using water and read about sewer line work.
A sink that drains slowly but only when the disposal runs points to the disposal outlet or the trap. A sink and a floor drain that both back up together point farther down the line. Telling the dispatcher which fixtures are affected speeds up the diagnosis.

Garbage disposal questions
Why is my garbage disposal humming but not spinning?
A hum without spin means the motor has power but the flywheel is stuck, usually from a jam. With the power off, you can turn the flywheel from underneath with a hex key and then press the reset button. If it hums again, call.
Is it safe to put my hand in the disposal?
No. Turn off the power at the switch and the breaker, and use tongs or pliers to remove anything stuck. Never reach into a disposal, even when it seems off.
Where does a garbage disposal usually leak?
Leaks occur at the sink flange, the dishwasher inlet, the discharge pipe or the body of the unit. A leak from the body usually means the unit is finished, while a leak at a flange or hose is a seal or connection repair.
Does a disposal affect the dishwasher drain?
The dishwasher usually drains into the disposal or into a connection above it. A blocked disposal can stop the dishwasher from draining. Clearing the disposal often fixes that, and the plumber checks the dishwasher connection during the visit.
Need disposal service in Allentown?
Call the dispatch line, say what the unit does and ask what is available for your address.
- Licensed and insured plumbers
- Same-day service when available
- 24/7 emergency dispatch
Allentown PA