Garbage disposal installation service in Long Beach

A straight swap of one disposal for another is usually a short visit, while a first-time installation can include new plumbing and a new outlet. Either way, a local plumber removes the old unit, mounts the new one under the sink flange, connects the drain and, if you have a dishwasher, its hose. We set up the visit, and a written price comes first. For the other sink topics, our section on sinks, faucets and disposals is the place to start.

A disposal is a fixture in the same family as the faucet and the drain beneath it, and it only works well when the whole kitchen sink setup does.

What is covered when a disposal goes in?

A typical job covers removing the old unit or the plain sink strainer, fitting the mounting assembly to the sink flange, hanging the disposal, connecting the drain outlet to the trap, hooking up the dishwasher drain if there is one, wiring or plugging it in, and testing for leaks. Extras such as a new switch or outlet are priced separately.

For a replacement, the plumber may reuse the existing mounting ring if it is compatible, though many are swapped. InSinkErator's published steps include removing the knockout plug inside the disposal when a dishwasher will connect, snugging the three mounting screws a turn or two at a time, going round the ring, and running the unit with water to check for leaks. A first installation where no disposal existed also needs a disposal-ready sink flange and sometimes a new drain configuration.

Where does the power come from, and do I need an electrician?

A disposal needs a grounded power source, usually an outlet under the sink or a hardwired connection. InSinkErator's instructions say a corded unit goes into a properly installed, grounded three-hole receptacle, and that you should have a qualified electrician add one if the plug does not fit. Switch off the breaker before any work.

Many kitchens already have a switched outlet from a previous disposal, which keeps the cost down. If the home has no switch or outlet, the work includes electrical, and costs rise. Cost guides note that electrical work can add $100 or more to the labor. The plumber will tell you whether an electrician is needed, and in California most electrical work requires a contractor license as well.

What does disposal installation cost?

Angi's 2026 data puts the average installed cost near $550, with a range of about $150 to $950. HomeGuide lists installation labor around $75 to $200 for a straight replacement. Most of the total is the unit, and electrical work, a new drain layout or a dishwasher hookup pushes the number up. Treat these as national guides, not a Long Beach quote.

What drives the range: the horsepower and features of the unit, whether you are replacing or installing the first one, the condition of the sink flange and drain, whether a new outlet or switch is needed and whether a permit comes into it. The old unit's disposal may be bundled into the price or charged as its own line. Treat only a written quote, made after the plumber looks at your sink, as the real price. Our page on plumber cost explains how hourly rates and trip charges are usually built.

Is a permit involved, and who may do the job?

Long Beach requires a plumbing permit when plumbing is installed or altered, with exemptions for minor repairs that need no new materials, so a plain one-for-one swap may escape it while a new drain or outlet might not. The plumber will say which applies. Most plumbing and electrical work in California requires a contractor license.

The state licensing board runs a lookup at cslb.ca.gov. In San Pedro and Wilmington, permits go through LADBS, not the City of Long Beach. Older Long Beach kitchens, such as those in 1920s to 1950s bungalows, often have cramped sink cabinets, steel or cast-iron drain lines or non-standard traps, which can add time.

What goes wrong after a disposal is in?

The usual list: seepage where the sink flange meets the porcelain, at the drain connection or the dishwasher hose, a jammed or humming motor, odors and a sluggish drain. Most leaks come from a mount that was not tightened evenly, a worn gasket or an old strainer. Jams are often cleared with the maker's reset and a hex key, and the unit must be off.

A dripping sink faucet over the disposal is a separate fix; our guide to stopping a faucet drip handles it. If the kitchen drain is slow with or without the disposal, the line may be clogged beyond the unit, and slow sink drains covers that. Never put your hand in a disposal, and keep the power off while clearing a jam. Do not pour grease down it.

When the shower and the bath drain slowly at the same moment as the kitchen sink, suspect the main drain instead of the disposal, and let a plumber diagnose it.

Replace it or repair it?

Replace when the body itself leaks, when the motor hums but will not turn after a reset, when the grinding plate is worn, or when the unit is a decade or more old. A leak at a connection can often be fixed. A leak through the housing cannot. A plumber can quote both options, and our page on plumber installation of faucets shows how fixture jobs are priced.

Since the cabinet is empty anyway, have the plumber glance at the faucet, supply lines and shutoff valves. A failing shutoff replaced during the same appointment spares you a second trip.

Common questions

What does the job do to my schedule?

When plumbing and outlet are already right, a straight replacement frequently wraps up in two hours or less. A first-time installation, a new outlet or a dishwasher hookup extends that. Removing and reinstalling the sink drain or fixing an old trap adds time. The plumber will estimate once the cabinet is open.

What should the written quote spell out?

Look for the unit, the mounting, drain and dishwasher connections, electrical work, the permit and taking the old unit away. Ask which model and horsepower, and what warranty comes with it. A contractor's license can be verified online with the state, and the paperwork should exist before the job starts.

Does somebody have to be home while it is installed?

Ideally. Access under the sink is needed, water and power may go off, and the plumber should show you the reset button and the switch at the end. If that is impossible, set up entry through someone trustworthy and keep a phone line open. Empty the cabinet beforehand.