What an InSinkErator install involves
Installing a garbage disposal such as an InSinkErator means fitting a mounting assembly under the sink flange, hanging the grinder unit, connecting the discharge to the drain trap, and wiring or plugging in power. A swap of an existing unit often takes a couple of hours. A first-time install takes longer because the drain, the power and the dishwasher connection may all need work.
The sink needs a 3.5 inch drain opening, and most kitchen sinks already have one. Double-bowl sinks usually take the disposal on one side. A single deep bowl can work too, but the trap arm may need rerouting.
Replacement or first-time install
Replacing an existing disposal
- Mount ring and drain connection are already there
- Power is already wired or plugged in
- Main decisions are size and sound insulation
- Usually the quicker job
Adding a first disposal
- Drain opening may need a new flange
- A switch and a power source must be added
- Dishwasher drain hose needs a new connection point
- Permit questions are more likely
Picking the right size and feed type
| Household | Suggested unit | Why |
|---|---|---|
| One or two people, light cooking | Smaller motor | Less food waste to grind and a lower price tag |
| Family of four, daily cooking | Mid-size motor | Handles more scraps without bogging down |
| Large household or heavy cooking | Larger motor with sound insulation | Faster grind and quieter running |
| Tight cabinet space | Compact model | Clears the trap and the dishwasher hose |
Continuous feed units run while the switch is on and you feed scraps in. Batch feed units run only when the stopper is twisted into place, which some families prefer for safety. We can tell you what fits your sink before you buy.
What the installer checks first
- 1
The sink and the drain
We check the flange, the trap and the drain arm height, since a low arm makes slow draining.
- 2
Power and switch
A unit needs a dedicated or suitable circuit with a switch you can reach from the sink.
- 3
Dishwasher connection
The dishwasher drain hose joins at the disposal inlet after the knockout plug is removed.
- 4
Test run
We check for leaks at every joint, run water through the unit, and listen for odd noises.
Skipping a step can cause trouble
The most common mistake is leaving the dishwasher knockout plug in place. The dishwasher then cannot drain, and it will back up the first time it runs. Another is overtightening the mounting ring, which cracks the sink flange seal and leaks into the cabinet.
Safety checklist before any disposal work
Never reach into a disposal, even when it is off.
- Switch off the breaker for the circuit, not just the wall switch.
- Unplug the unit if it uses a cord.
- Use a flashlight and tongs to remove anything stuck, never your hand.
- Confirm the power is off with a tester before touching wires.
- If you smell gas near the kitchen, leave the building and call the gas utility or 911 first.
When a new disposal is not the answer
A jammed disposal often only needs a reset button press or a turn with an Allen wrench at the bottom. A leak at the top flange means the seal failed, which can be replaced without a new unit. Our garbage disposal service covers repair as well as swaps, and we tell you which makes sense after a look.
Septic homes face an extra question. A disposal sends more solids into the tank, so heavy use may shorten the time between pump-outs. If you are in a wells-and-septic area such as Loxahatchee Groves, ask your septic contractor before adding one.
Royal Palm Beach note: permits and utility
Homes in the Village are on the county utility system, with Palm Beach County Water Utilities at (561) 740-4600. The Village states that most work done in Royal Palm Beach requires a building permit, and it does not publish a rule for disposals alone. Call the Village building department at (561) 790-5128 before adding wiring or a new circuit.
If your address is south of Southern Boulevard, the water utility is Village of Wellington Utilities instead.
Source type: Village of Royal Palm Beach building department web page and county utility customer service information
Where this fits with other kitchen work
A disposal install is often paired with other jobs under the sink. Our plumbing installation team can move supply stops, add a filter line or fit a new faucet at the same visit. That saves a second trip and keeps the cabinet work tidy.
Homes in Wellington get the same service, with the same questions about permits and wiring.
A disposal quote depends on a few plain things.
The unit you choose
Motor size, sound insulation and feed type all change the cost of the unit.
Replacement or new install
A swap uses what is already there. A first install adds drain and power work.
Electrical work
A new switch or circuit adds time and may involve a licensed electrician.
Drain condition
An old or low trap arm may need to be replaced to drain properly.
Permit questions
Ask the Village building department whether your change needs one.
We give a clear price before work starts, and you decide. Call the 24/7 line to ask.
Sources and standards
Disposal drain connections and traps follow the Florida Building Code, Plumbing, 8th Edition (2023), and the electrical hookup is a separate trade governed by its own code. Ask the Village of Royal Palm Beach building department at (561) 790-5128 if a new circuit is involved.
Garbage disposal install questions in Royal Palm Beach
How long does it take to install a garbage disposal?
A like-for-like swap usually takes about two hours. A first-time install can take longer because of drain and power work.
Can a disposal go on any sink?
Most standard kitchen sinks with a 3.5 inch drain opening work. Some stainless sinks and unusual drains need an adapter or a different mounting ring.
Do I need a permit to install a disposal in Royal Palm Beach?
The Village says most work requires a building permit but does not list disposals by name. Call the Village building department at (561) 790-5128 and ask about your situation.
Can I add a disposal with a septic tank?
It is possible, but it adds solids to the tank and can shorten pump-out intervals. Ask a septic contractor first, and know that the county utility sewer homes in the Village do not have this concern.
Why does my new disposal hum and not spin?
A jam is most likely. Switch off the power, then turn the hex socket at the bottom with a wrench to free it, and press the red reset button.
Question not answered here? Call the 24/7 line at (561) 448-8545 and talk to a plumber.