Garbage disposal prices range from $150 to $1,500 depending on motor power, brand, and installation

A basic under-sink garbage disposal unit costs between $150 and $300 if you buy it alone. Mid-range models with stronger motors and better noise control run $300 to $600. Heavy-duty commercial-grade disposals for large households can reach $800 to $1,500. The final bill also includes installation labor, which typically adds $150 to $300 if a plumber handles it, though some homeowners install simpler models themselves.

The price you actually pay depends on what motor size you need, whether you want quieter operation, how long the warranty lasts, and whether you hire a professional. A disposal that works fine for one person washing dishes differs from one handling a family of six or a kitchen that processes a lot of food waste.

Key Takeaways

  • Budget $150 to $300 for a basic new disposal unit, or $300 to $600 for a mid-range model with a stronger motor.
  • Installation labor from a plumber typically costs $150 to $300 on top of the unit price, though some homeowners can install simpler models themselves.
  • Motor horsepower (measured in HP) is the biggest factor affecting price—half-horsepower models cost less than three-quarter or full-horsepower versions.
  • Noise level, warranty length, and brand reputation add to the cost; quieter models with longer warranties cost more than basic units.
  • Replacing an existing disposal costs less than installing one in a sink that never had one, because the plumbing connections are already in place.

Motor size and horsepower determine most of the price difference

The motor's horsepower (HP) is the single biggest factor in what you pay. A half-horsepower (0.5 HP) disposal is the cheapest option, usually $150 to $250 new. These work for light use—one or two people, occasional food scraps, nothing fibrous or tough. Three-quarter horsepower (0.75 HP) models cost $250 to $400 and handle moderate use in a family kitchen. Full horsepower (1 HP) and higher run $400 to $800 and can process tougher waste faster, with less risk of jamming.

A stronger motor also means the unit runs faster and quieter, because it does not have to strain. If you have a large household or cook frequently, the extra cost of a 0.75 or 1 HP model often pays for itself in fewer jams and repairs over time.

Noise level and sound insulation add $100 to $300

Standard disposals are loud—they can reach 80 decibels, about as loud as a garbage truck. Quieter models with sound-dampening insulation cost $100 to $300 more but run at 60 to 70 decibels, closer to normal conversation. Brands like InSinkErator Quiet Collar and Moen Quiet Series are known for this feature.

If your kitchen is open to a living area or you run the disposal during quiet hours, the extra cost may be worth it. If the disposal is in a basement or far from living spaces, standard noise levels are usually acceptable.

Brand and warranty affect long-term cost

Well-known brands like InSinkErator, Moen, and Waste King typically cost more upfront but come with longer warranties and easier repair parts. A basic InSinkErator model might cost $50 to $100 more than an off-brand equivalent, but the warranty covers parts for 5 to 7 years instead of 1 to 3 years. Over time, that warranty protection can save you money on repairs or replacement.

Budget brands are cheaper to buy but harder to find replacement parts for if something breaks. If you plan to stay in your home for many years, a mid-range brand with a solid warranty often costs less in the long run than replacing a cheap unit twice.

Installation labor costs $150 to $300 for a professional plumber

If you hire a plumber to install the disposal, expect to pay $150 to $300 in labor on top of the unit cost. The plumber disconnects the old disposal (if there is one), installs the new unit, reconnects the drain lines, and tests it. The job usually takes 1 to 2 hours. Some plumbers charge a flat rate; others charge hourly. Call three plumbers in your area and ask for a quote before deciding.

If you are replacing an existing disposal with the same type, installation is faster and cheaper than installing one in a sink that never had one. A new installation in a sink without plumbing already in place can cost more because the plumber has to run new drain lines and possibly modify the cabinet underneath.

Replacing an old disposal costs less than a new installation

Swapping out an old disposal for a new one typically costs $300 to $600 total (unit plus labor), because the drain connections are already there. The plumber removes the old unit, installs the new one, and reconnects the existing pipes. This is the most common scenario for homeowners.

Installing a disposal in a sink that has never had one costs $400 to $900 or more, because the plumber has to cut a hole in the sink strainer (if it is not already there), run new drain lines to the P-trap, and possibly reroute existing plumbing. Get a quote before committing, because the cost depends on your cabinet layout and how far the drain line has to travel.

DIY installation saves labor costs if you are comfortable with plumbing

Some homeowners install disposals themselves to avoid the $150 to $300 labor charge. This works if you are replacing an existing disposal and the new unit is the same size and type. You turn off the power, disconnect the old unit, install the new one, and reconnect the drain lines. Many manufacturers include video instructions, and the job usually takes 30 minutes to an hour.

Do not attempt DIY installation if you are installing a disposal for the first time or if you are uncomfortable working under the sink with plumbing connections. A mistake can lead to leaks, electrical hazards, or damage to the sink. If you are unsure, hire a plumber. The cost is worth the safety and the may provide that the job is done correctly.

Frequently Asked Questions

Can I buy a garbage disposal and install it myself to save money?

Yes, if you are replacing an existing disposal with a similar model and you are comfortable with basic plumbing. You can save $150 to $300 in labor. If you are installing one for the first time or the new unit is a different size, hire a plumber to avoid leaks and electrical problems.

What is the difference between a half-horsepower and a full-horsepower disposal?

A half-horsepower disposal costs $100 to $150 less but is slower and louder, and it jams more easily with tough waste. A full-horsepower disposal runs faster, quieter, and handles fibrous foods better. For a family of four or more, a 0.75 or 1 HP model is usually worth the extra cost.

Do I need to replace my disposal if it still works?

No. If your disposal runs and drains properly, keep it. Replace it only when it jams repeatedly, leaks, makes unusual noises, or stops working. A working disposal has years of life left and replacement is an unnecessary expense.

What is included in the plumber's installation fee?

The fee covers removing the old unit (if there is one), installing the new disposal, reconnecting drain lines, testing the unit, and checking for leaks. It does not usually include the cost of the disposal itself or any repairs to the sink or cabinet. Ask the plumber what is included before they start work.

Are expensive disposals worth the extra cost?

Mid-range disposals ($300 to $600) are usually the best value—they have stronger motors, longer warranties, and quieter operation than budget models, without the premium price of commercial-grade units. A basic disposal works fine for light use, but if you cook frequently or have a large household, the extra durability and noise reduction pay off over time.