Plumbing · Lawrence, KS

Garbage Disposal Installation in Lawrence, KS — Professional Service

Garbage disposal installation in Lawrence, KS. Unit mounted, drain and dishwasher connected, and wired or plugged in correctly, with the old unit removed.

877-519-9702

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Handyman kneeling under a double kitchen sink tightening the mounting ring of a black garbage disposal with pliers, red toolbox beside him, in a Lawrence, KS home

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About This Service

Expert Garbage Disposal Installation in Lawrence, KS

Garbage disposal installation in Lawrence typically runs $120 to $260 in labor plus the unit, and the price depends on whether the job is a swap or a first-time install. Replacing an existing disposal is quick: the old unit unhooks, the new one hangs on the same mount, and the connections match. Installing one where there was none means opening the sink drain, setting a new mounting assembly and often addressing power, and that is a larger job.

The detail most likely to go wrong is a small one. A new disposal has a knockout plug in its dishwasher inlet, and if a dishwasher will drain through the disposal, the plug has to be removed from the inside before the unit is hung. Forgetting it means the dishwasher cannot drain, and the water backs up into the dishwasher. We punch it out first, every time. Also important is the drain geometry: a disposal has to discharge into a properly sloped trap arm, and a dishwasher drain hose needs a high loop or an air gap so dirty sink water cannot siphon back into the dishwasher.

Old Lawrence kitchens make the piping question real. In Old West Lawrence, many original kitchens have never had a disposal, and the sink drain may be galvanized steel or an old brass-and-lead assembly with a trap arm that does not match a modern unit. A disposal adds vibration and weight that corroded piping does not tolerate, so adding one can mean replacing the trap arm or a run of failing drain first. We look at what the sink actually drains into before we quote, so the price includes the piping and is not a surprise on the day.

We handle disposal installation and replacement, dishwasher drain connection, trap arm rework, and plug-in or hardwired power connections. New circuits and drain relocation are routed to licensed partners. Call 877-519-9702 for a free garbage disposal installation estimate.

New & Replacement Disposals

Dishwasher Drain Connection

Trap Arm & Drain Rework

Plug-In or Hardwired

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877-519-9702

Mon–Fri 7am–6pm · Sat 8am–2pm

Written estimate before work starts

Our Process

How We Handle Garbage Disposal Installation

Check Sink, Drain and Power

Sink type, the existing drain configuration and where power will come from are confirmed first. These decide whether the job is a straight swap or needs rework.

Remove the Old Unit or Prepare the Sink

An existing disposal is unmounted and removed. For a first-time install, the sink drain is opened up and the mounting assembly is set with plumber putty.

Mount, Connect and Knock Out the Dishwasher Plug

The disposal is hung, the discharge is aligned to the trap, and the dishwasher inlet is opened only if a dishwasher will connect, with the plug removed from inside.

Power, Leak-Test and Run

Power is connected safely, connections are checked under running water, and the unit is run to confirm quiet, leak-free operation.

FAQ

Garbage Disposal Installation Questions Answered

Common questions from Lawrence homeowners about our garbage disposal installation service.

Still have questions?

Call us — no forms, no queue. 877-519-9702

How much does garbage disposal installation cost in Lawrence?

Labor to install a disposal typically runs $120 to $260, plus the unit itself. A replacement of an existing unit is at the low end. A first-time install that needs an outlet or drain rework costs more.

Can a disposal be installed where there was none?

Usually, yes, if there is an outlet or switch location available and the sink has the standard 3.5 inch drain opening. Under the sink there must be room for the unit and its discharge to reach the trap.

What is the knockout plug in a new disposal?

A small plug in the dishwasher inlet that must be removed if a dishwasher will drain through the disposal. Forgetting it is the most common installation mistake, and it makes the dishwasher back up. We punch it out from the inside before the unit is hung.

What size disposal do I need?

A half horsepower unit is fine for light use. Three-quarters to one horsepower handles heavier use and jams less. For most households, a three-quarter horsepower continuous-feed unit balances cost and performance.

Do older Old West Lawrence kitchens need drain work before a disposal goes in?

Frequently. Many original kitchens there have no disposal at all, and the sink drain may be galvanized or old lead-and-brass piping with a trap arm that does not match a modern unit. Adding a disposal to that piping can mean replacing the trap arm or a run of corroded drain first, so we look at what the sink actually drains into before quoting.

Pricing Guide

Garbage Disposal Installation Cost in Lawrence, KS

Garbage disposal installation in Lawrence typically runs: replacing an existing disposal, labor only $120–$190; first-time installation with sink drain rework $180–$320; plumbing rework of an old galvanized trap arm $90–$240; dishwasher drain connection with a high loop $45–$110.

A three-quarter horsepower disposal supplied and installed typically runs $260–$480 total. New electrical circuits are routed to a licensed partner. Free estimates. Call 877-519-9702.