Garbage disposal cost by size
| Disposal size | Installed price |
|---|---|
| 1/3 HP (light use) | $150–$250 |
| 1/2 HP | $230–$450 |
| 3/4 HP (most common) | $275–$500 |
| 1 HP premium / quiet | $400–$760 |
A 1/2 HP unit covers most small households, and 3/4 HP is the most common replacement choice for a family kitchen: quieter and better with tougher waste. 1/3 HP units suit light use only. Stainless steel grinding parts resist corrosion better than aluminum and usually last longer.
A fair price for a simple swap
Replacing a disposal where the drain and power are already in place is about 45 minutes to an hour of work, and labor typically runs $120–$220. A quote well above the range for your size needs a specific reason, such as new wiring, corroded pipes or a code-required air gap. Emergency weekend calls also carry premium rates, so scheduling during business hours saves money.
First-time installation costs more
If your kitchen has never had a disposal, the plumber has to modify the sink drain, and an electrician may need to add an outlet or a dedicated circuit, about $100–$250. Some local codes also require a dishwasher air gap ($90–$180). Homes on septic systems need a septic-safe model, which adds $50–$100 to the unit price.
Repair or replace?
Guides put a garbage disposal's lifespan at roughly 8 to 15 years, with many citing 10 to 12. Once a unit is 8 to 10 or more years old and has a burned-out motor, leaks from the body or has needed repeated repairs, guides generally recommend replacing it. A simple jam or clog is usually a repair job.
Questions to ask before you hire
- Is this a direct replacement, or will you need to change the drain or wiring?
- Is haul-away of the old unit included?
- Can I buy the unit myself? Plumber-supplied units often carry a markup.
- Does my area require a dishwasher air gap?
Methodology and sources
We price a like-for-like replacement by disposal size, adjust the labor share for your state's plumber wages, and price add-ons separately. Read how we estimate costs.
- Modernize: garbage disposal replacement cost — prices by size, repair or replace
- FixItReal: garbage disposal replacement cost — fair-price range, labor
- FixDisposal: replacement cost — 3/4 HP pricing, add-ons
- CountBricks: disposal installation cost — 1 HP units, electrical work
- Liberty Home Guard: disposal installation cost — first-time installs, lifespan
- Dwellness: how long garbage disposals last — lifespan and when to replace
- BLS OEWS May 2025, State (SOC 47-2152, Plumbers) — state labor index
What each source reports
Our estimate does not rely on any single page. This table lists each page we used and the figures it reports, so you can see where the ranges come from.
| Source | What it reports |
|---|---|
| Modernize |
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| FixItReal |
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| FixDisposal |
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| CountBricks |
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Common questions about garbage disposal installation costs
How much does garbage disposal installation cost?
A typical job (3/4 hp, like-for-like swap) comes to about $360 nationally, within a range of $280 to $500. Use the calculator above to adjust for your state, the options you choose and any extras.
Where do these prices come from?
They come from 4 published cost pages from 4 publishers, last checked Sep 27, 2026. We report what those pages say and do not invent figures; the table above shows each source.
How does my state change the estimate?
The labor part of the price is scaled by the average wage for the relevant trade in your state, using Bureau of Labor Statistics data. Materials and equipment are not adjusted.
Why might a contractor's quote differ from this estimate?
A quote reflects your specific scope, access, local demand and what the contractor includes. Ask for line items rather than a single total so you can compare bids on the same basis.
All 4 sources behind these prices
Every figure in the calculator comes from one or more of these pages, with the number each one supports in the link text.
- Modernize: basic 1/3 horsepower disposals typically cost $150-$250 installed
- FixItReal: hired install of a 1/2 HP InSinkErator Badger 5 runs $280-$340; $230-$400 is fair for a like-for-like swap
- FixDisposal: most homeowners pay $275-$400 for a standard 3/4 HP unit plus professional installation
- CountBricks: best-tier 1 HP sound-insulated install $744 (Boston); 1 HP units $150-$515 before labor