Check these three things before you buy a unit
First, confirm you can reach power. Many sinks have a switched outlet under the cabinet, and some have a hardwired box. If neither is there, the install needs electrical work before any plumbing starts.
Second, look at your drain. A double-bowl sink with one trap, and a dishwasher hose that already connects to the old unit are signs of a simple swap. Third, find out whether the house is on public sewer or a septic tank, because a disposal sends more solids into either system.
| Your situation | DIY level | Call a plumber when |
|---|---|---|
| Replacing a disposal with the same mount style | Reasonable for a careful DIYer | The mount flange leaks or the trap is corroded |
| Adding a disposal where none existed | Plumber recommended | You need a new drain layout or air gap |
| Dishwasher is connected to the disposal | Manageable with care | The knockout plug is stuck or the hose connection leaks |
| No outlet or switch under the sink | Electrician required | Always, since new wiring is a separate trade |
| Home on a septic system | Ask your septic contractor first | Before installing, since solids affect the tank |
The installation steps, in plain order
Kill the power
Turn off the breaker and unplug the old unit or confirm wires are dead with a tester. Never trust a wall switch alone, because someone can turn it on while your hands are underneath.
Remove the old unit
Support the disposal, release the mounting ring and lower it. Disconnect the drain trap and the dishwasher hose, with a bucket ready for water.
Set the new mount
Clean the sink flange, add plumber's putty or the supplied gasket as the maker directs, and tighten the mounting ring so the flange seats evenly.
Knock out the dishwasher plug
On a new unit that serves a dishwasher, the plug in the inlet must be knocked out from inside before the hose goes on. Forgetting this step is a common cause of a dishwasher that will not drain.
Connect, power and test
Attach the discharge elbow, rebuild the trap, wire or plug in the unit, and run water for a minute. Check every joint with a dry paper towel before closing the cabinet.
Where DIY jobs go wrong
Overtightening plastic parts is the top problem. A cracked drain elbow or a warped gasket may hold for a day and then drip into the cabinet base for weeks.
The second problem is the trap arrangement. If the disposal outlet sits lower than the trap or the line slopes the wrong way, the sink drains slowly and food scraps sit in the pipe. That is a layout issue, and tightening more will not cure it.
The third is an electrical shortcut. Do not splice into an unmarked cable, use a damaged cord or wire a disposal to a circuit you have not checked. If you are unsure, an electrician should make the connection and our team can handle the drain side.
Stop and call if you see this
Water rising from the cabinet floor, a smell of burning near the motor, rust-stained pipes that crumble when touched, or wiring you cannot identify. Turn off the breaker and the sink supply valves and call a licensed professional.
Sewer, septic and permits in Winslow Township
Not every Winslow street is on public sewer. The Township's Department of Municipal Utilities (609-567-0700, weekdays 8:30 to 4:30) takes sewer connection applications, and Camden County Municipal Utilities Authority approves a separate application. If your home is on septic, a disposal adds fine solids to the tank, so ask your septic contractor before you buy.
For sewer hookups the Township Construction Department issues the permit, a registered plumber does the work and the plumbing inspector must approve it. A simple under-sink swap is a different scale, and permit rules vary, so ask the Construction Office at 609-567-0700, option 5. The plumbing inspector works Tuesday to Thursday mornings, 8am to 1pm.
Under the state plumbing subcode, the 2021 National Standard Plumbing Code Illustrated, a master plumber or authorized plumbing contractor must do licensed work. Licensees must display their license number on vehicles and advertising, so ask to see it.
What a plumber adds that a kit does not
A plumber checks the trap, the vent and the downstream pipe before the new unit goes in. A disposal can only work as well as the drain it feeds, so a slow line should be cleared first. If your kitchen drain already backs up, drain cleaning ahead of the install saves a second visit.
If you have a unit that hums, leaks or jams, repair may cost less than replacement. Our garbage disposal repair service starts with an inspection to see whether a reset, a new gasket or a new unit is the honest answer.
What shapes the price of a disposal install
The unit is only part of the bill. Compare quotes by asking what each one covers.
Policies typically respond to sudden damage, not to wear, so a leak from an old worn disposal is usually your maintenance cost. Ask your carrier what applies.
Want it done right the first time?
If the drain layout or wiring looks beyond a swap, call and tell the dispatcher what you see under the sink. We can send a licensed plumber, with same-day appointments when available.
The steps are the same in Sicklerville (08081) and Winslow (08095), but check your own sink and drain first. We also dispatch to Waterford Township and Gloucester Township for the same work.
Questions Winslow homeowners ask
A straight swap often takes one to two hours for a careful homeowner. A first-time install with new wiring or drain changes takes longer and may need two trades.
A same-style replacement is within reach for many homeowners who can turn off the breaker and follow the directions. Do not attempt new wiring, new drain layouts or any work you are unsure about without a licensed professional.
It depends on your tank and your septic contractor's advice. Ask before installing, since added solids affect pumping schedules and the tank. The Township Department of Municipal Utilities at 609-567-0700 can tell you whether your street is sewered.
Permit rules vary, so ask the Construction Office at 609-567-0700, option 5. They decide what applies to your scope, and a licensed plumber can tell you what they usually ask for.
The knockout plug in the dishwasher inlet is often still in place. Turn off power, remove the unit's hose and check the inlet, or ask a plumber to clear it.
Grease, coffee grounds in bulk, stringy vegetables, fruit pits, bones and starchy foods like rice and pasta. Run cold water while grinding and for a few seconds after.
Sources and standards
Facts on this page come from these public sources. Check local rules with the office named in each.