Garbage Disposal Unit Prices Range From $100 to $750
A new garbage disposal unit itself costs between $100 and $750, depending on the brand, motor power, and features. Budget models from brands like Waste King or InSinkErator run $100 to $250. Mid-range units with better noise reduction and larger grinding chambers cost $250 to $500. High-end models with extra features like soft-start technology or larger horsepower motors reach $500 to $750.
The motor size matters most for price. A half-horsepower unit is the cheapest option and handles basic food scraps. Three-quarter horsepower models cost more but grind tougher materials faster. One-horsepower units are the most expensive and are built for heavy use or larger households.
Key Takeaways
- The disposal unit itself costs $100 to $750, with most homeowners spending $200 to $400 on a reliable mid-range model.
- Professional installation adds $150 to $300 on top of the unit price, though some plumbers charge flat rates that include both.
- DIY installation saves labor costs if you have basic plumbing skills, but mistakes can lead to leaks or electrical problems.
- Replacing an existing disposal costs less than installing one in a new sink because the plumbing connections are already in place.
- Brand reputation and warranty length affect price; established brands typically cost more but last longer and have better customer support.
Professional Installation Costs $150 to $300
Hiring a plumber to install your disposal adds $150 to $300 to the total cost. Some plumbers charge an hourly rate ($75 to $150 per hour) and the job usually takes one to two hours. Others quote a flat rate for the entire installation, which can be cheaper if the job is straightforward.
Installation is faster and cheaper if you already have a disposal to replace. The plumber disconnects the old unit, installs the new one into the existing mounting, and reconnects the drain lines. If you are installing a disposal in a sink that has never had one, the plumber may need to modify the drain opening or add electrical wiring, which takes longer and costs more.
Ask the plumber whether the quote includes removing the old unit and disposing of it. Some charge extra for haul-away. Also confirm whether they will install the electrical outlet under the sink or if you need an electrician to run a dedicated circuit, which adds another $100 to $200.
DIY Installation Saves Money but Requires Plumbing Knowledge
If you have basic plumbing skills, you can install a disposal yourself and save the $150 to $300 labor cost. The job involves disconnecting the old drain assembly, mounting the new disposal to the sink flange, and reconnecting the drain lines. Most units come with detailed instructions and mounting hardware.
The main risk is leaks. If the rubber seals are not seated correctly or the connections are not tight enough, water will drip into the cabinet below. You will also need to may support the electrical outlet under the sink is properly grounded and that the disposal is wired correctly. If you are not comfortable working with plumbing connections or electrical wiring, hire a professional instead—a leak or electrical mistake costs more to fix than the installation would have.
Brand and Motor Size Drive Most of the Price Difference
InSinkErator is the most common brand and prices range from $150 to $600 depending on the model. Waste King units are often cheaper, starting around $100 for basic models. Moen and Kohler disposals cost more because they are sold as part of sink systems and include additional features.
Motor horsepower is the biggest price factor within a brand. A half-horsepower InSinkErator costs around $150, while a one-horsepower model from the same brand costs $400 to $500. The extra power grinds food faster and handles fibrous materials like celery and corn husks more easily. For a household of two to three people, half or three-quarter horsepower is usually enough. Larger households or heavy users benefit from one-horsepower models.
Noise level also affects price. Budget models are louder because they lack sound insulation. Mid-range and premium units have rubber baffles and thicker walls that reduce grinding noise by 5 to 10 decibels. If your kitchen is open to a living area, the extra cost for a quieter model may be worth it.
Warranty Length and Replacement Costs
Most disposals come with a one-year manufacturer warranty covering defects. Some brands offer three-year or five-year warranties for an extra $20 to $50. A longer warranty is useful because a disposal that fails after three years will cost $250 to $400 to replace (unit plus labor), so a five-year warranty can save money if the unit fails near the end of its life.
The average disposal lasts 8 to 15 years with normal use. If you grind bones, fruit pits, or other hard materials regularly, the motor wears out faster and you may need to replace the unit sooner. Extending the warranty does not change how long the disposal lasts, but it covers repair or replacement if the motor fails during the warranty period.
Total Cost: Unit Plus Installation
A complete garbage disposal installation typically costs $250 to $1,000. This breaks down as follows: a mid-range unit ($250 to $400) plus professional installation ($150 to $300). If you install it yourself, the cost is just the unit price. If you choose a premium unit with a longer warranty and a plumber who charges a flat rate, you might spend closer to $700 to $1,000.
Replacing an existing disposal is usually on the lower end of that range because the plumbing and electrical connections are already in place. Installing a disposal in a sink that has never had one, or upgrading from a smaller to a larger unit, may cost more if the plumber needs to modify the drain or add a new electrical outlet.
Where to Buy and Compare Prices
Home Depot, Lowe's, and Amazon carry most major brands and allow you to compare prices and read customer reviews. Prices vary slightly between retailers, so check all three before buying. Some retailers offer free shipping on orders over a certain amount, which can save $15 to $30 on the unit itself.
If you are buying from a plumber directly, ask whether they mark up the unit price or charge a flat installation fee. Some plumbers buy units at wholesale and pass the savings to you. Others charge retail price plus labor. Getting a quote from two or three plumbers helps you understand whether you are paying a fair price for installation in your area.
Frequently Asked Questions
Can I install a garbage disposal myself if I have never done plumbing before?
You can if you follow the instructions carefully and take your time, but mistakes with drain connections or electrical wiring are common. If you are not confident, hire a plumber. The $150 to $300 labor cost is worth avoiding a leak that damages your cabinet or an electrical problem that creates a safety hazard.
Is a more expensive garbage disposal worth the extra cost?
A mid-range unit ($250 to $400) offers the best value for most households. It grinds food reliably, lasts 10 to 15 years, and costs less than a premium model. Premium units are quieter and handle tougher materials, but they are worth the extra cost only if noise bothers you or you regularly grind bones and fibrous scraps.
What is the difference between half-horsepower and three-quarter horsepower?
A three-quarter horsepower motor grinds food faster and handles tougher materials like corn husks and celery. Half-horsepower is fine for basic food scraps from a household of two to three people. If you have a larger family or grind a lot of food waste, three-quarter horsepower is worth the extra $50 to $100.
Do I need an electrician to install a garbage disposal?
Only if your sink does not have an electrical outlet underneath it. If an outlet already exists, the plumber can plug the disposal in. If you need a new outlet, an electrician must run wiring from your electrical panel, which costs $100 to $200. Ask your plumber whether an outlet exists before you hire them.
How long does a garbage disposal last?
Most disposals last 8 to 15 years with normal use. Grinding bones, fruit pits, and other hard materials regularly shortens the lifespan. If your disposal fails after five years, it is usually cheaper to replace the entire unit than to repair it.