A garbage disposal that hums but won’t grind, leaks from the bottom or trips the breaker every week is usually telling you it’s time for a new one. The garbage disposal installation cost depends on more than the price of the unit: motor size, whether the old unit comes out easily, the drain and dishwasher connections, and whether there’s already power under the sink all change the final bill. This guide breaks down 2026 prices for homeowners in Los Angeles, Orange County and the surrounding communities, so you know what a fair quote looks like before you call a plumber.
Below you’ll find national market ranges from independent cost guides, The 5 Star Plumbing’s own typical price, what each horsepower size costs, the extras that push a quote up, and practical ways to keep the total garbage disposal installation cost under control.
What This Guide Covers
- Average garbage disposal installation cost in 2026
- The 5 Star Plumbing’s typical price
- Cost by horsepower and type
- Extra costs that change your quote
- Repair or replace?
- DIY vs. hiring a plumber
- Using a disposal in Los Angeles and Orange County
- How to lower your cost
- Frequently asked questions
Average garbage disposal installation cost in 2026
Most homeowners pay a few hundred dollars to have a new disposal installed. Angi puts the typical cost to replace a garbage disposal at about $550, with most jobs falling between $200 and $625. This Old House lists a national average of about $450 for buying and installing a unit, with a wider range of $150 to $950 once you include premium models and more involved jobs.
Labor is a smaller share of the garbage disposal installation cost than many people expect. Angi and NerdWallet both put technician labor at roughly $50 to $100 per hour, and a straight swap of a like-for-like unit often takes about an hour. This Old House notes that a licensed plumber can charge up to $150 per hour. NerdWallet also reports that Home Depot’s average installation charge is about $189, with a range of $97 to $339, for standard installs.
Here’s how the garbage disposal installation cost breaks down across the main national guides:
| Cost item | Typical national range | Source |
|---|---|---|
| Total replacement (unit + labor), typical | $200–$625 (about $550 average) | Angi |
| Total installed, wider range | $150–$950 (about $450 average) | This Old House |
| Labor rate | $50–$100 per hour (plumbers up to $150) | Angi, This Old House |
| Retail store installation | About $189 average ($97–$339) | NerdWallet (Home Depot data) |
| Permit, where required | $50–$500+ | NerdWallet |
Keep in mind that these are national figures. Prices vary by region, so your local garbage disposal installation cost can differ from the national average, especially when the job needs more than a simple swap.
The 5 Star Plumbing’s typical price
The 5 Star Plumbing’s typical price for garbage disposal replacement is $600–$800; the exact price is confirmed after the technician sees the job. That covers removing the old unit and installing and testing the new one. Where your garbage disposal installation cost falls in that range depends on the unit you choose, the condition of the sink flange and drain connections, and whether the dishwasher hookup needs work.
If you’d like to spread out the cost, see our plumbing financing options, and check the current promotions page before you book. For details on the service itself, visit our garbage disposal repair and replacement service page.
Garbage disposal installation cost by horsepower and type
The unit itself is the biggest variable in your garbage disposal installation cost. Motor size (horsepower), feed type and build material all move the price. Angi’s cost data breaks unit prices down like this:
| Motor size | Unit price (Angi) | Best for |
|---|---|---|
| 1/3–1/2 HP | $50–$225 | 1–2 people, light or occasional cooking |
| 5/8–3/4 HP | $120–$310 | Families who cook a few times a week |
| 1–1 1/4 HP | $200–$400 | 4+ people or daily cooking from scratch |
Which size do you need?
Angi’s sizing guide recommends a 1/3 HP unit for one or two people who prepare only a few meals a week, 1/2 HP for one or two people who cook daily, 3/4 HP for a household with kids that cooks a few times a week, and 1 HP or more for four or more people or anyone who cooks every meal from scratch.
Continuous-feed vs. batch-feed
Continuous-feed disposals run while you hold a wall switch and are the most common type. Batch-feed units only run when you place a stopper in the drain, which some families prefer for safety. This Old House lists continuous-feed units at $75 to $500 and batch-feed units at $200 to $650.
Material and features
Stainless steel grinding parts last longer and resist corrosion. Angi lists aluminum-component units at $75 to $300 and stainless steel models at $400 to $1,100. NerdWallet notes that noise reduction, auto-reverse and multi-stage grinding also raise the price.
Extra costs that change your quote
A like-for-like swap is the cheapest version of this job. These are the situations that raise the garbage disposal installation cost:
- No disposal there before. Adding a first-time disposal can mean new drain fittings, a new sink flange and a dishwasher connection, so the garbage disposal installation cost is higher than for a swap.
- No power under the sink. A disposal needs an outlet or a hard-wired connection and a switch. Angi notes that some units may need a dedicated circuit and recommends a licensed electrician for that work. This Old House lists electrician rates of $50 to $120 per hour.
- Stuck or corroded old unit. Angi lists $50 to $100 in extra labor for a difficult removal.
- Worn drain parts. Cracked tailpieces, a leaking P-trap or a failing sink flange are usually replaced during the job rather than reused.
- Dishwasher hookup. If the dishwasher drains through the disposal, the knockout plug must be removed and the drain hose reconnected. This Old House lists a dishwasher drain connector at $9 to $15.
- Power cord. Many units ship without a cord; NerdWallet puts the cord at about $15.
- Sink or faucet work at the same time. This Old House lists combined faucet and disposal installation at $410 to $1,300.
- Permits. NerdWallet notes that permits, where required, can run $50 to $500 or more. Ask your plumber whether your project needs one, especially if new wiring or drain lines are involved.
If the sink is draining slowly before the swap, the problem may be further down the line rather than in the disposal itself, so mention it when you book.
Repair or replace?
Not every problem calls for a new unit, and a simple repair can avoid the garbage disposal installation cost entirely. A disposal that hums but won’t spin is often jammed and can be freed with the hex key that fits the bottom of the motor, and a unit that won’t start at all may simply need its reset button pressed. Our step-by-step guide to troubleshooting a disposal that won’t run walks through those fixes.
Replacement usually makes more sense when:
- The unit leaks from the body (not just a loose connection).
- It jams or trips the reset button over and over.
- It’s near or past the end of its expected life. This Old House and NerdWallet both put the typical lifespan at about 10 years, and Angi says 5 to 10 years, with stainless steel models lasting up to 15.
- Repair quotes approach the price of a new unit. This Old House lists repairs at $50 to $400.
For more on this decision, see our article on the warning signs that a disposal is wearing out.
DIY vs. hiring a plumber
Doing it yourself cuts the labor part of the garbage disposal installation cost, and swapping a disposal is one of the more approachable kitchen plumbing jobs, and Angi estimates DIY tool costs at around $75 for skilled homeowners. Still, a few parts of the job are easy to get wrong:
- Electrical safety. Hard-wired units involve household current. If you’re not comfortable with wiring, hire a licensed professional.
- Sealing the sink flange. A poorly seated flange is one of the most common sources of slow leaks into the cabinet.
- Dishwasher knockout plug. Forgetting to remove it means the dishwasher won’t drain.
- Drain alignment. A new unit may sit at a different height than the old one, so the trap and drain arm may need to be adjusted.
The 5 Star Plumbing holds California contractor license #1041772, has experience since 2006 and is family owned and operated.
Using a disposal in Los Angeles and Orange County
A new disposal lasts longer when it isn’t treated like a trash can, and local sewer agencies are clear about what shouldn’t go down the drain. Orange County Sanitation District tells residents to never pour fats, oil and grease down the sink or garbage disposal, and to scrape and dry wipe pots, pans and dishes before washing. Los Angeles County’s Clean LA fats, oils and grease guidance likewise advises against pouring hot grease down the drain and recommends using mesh drain strainers and putting food scraps in the trash.
In practice, that means:
- Run cold water while the disposal is grinding and for a few seconds after.
- Keep grease, oil and fat out of the sink entirely; let it cool, seal it in a container and throw it away.
- Avoid fibrous peels, bones and large amounts of starchy food such as rice or pasta.
- Scrape plates into the trash or green bin first, and use the disposal for small leftovers only.
Grease and food buildup are a common cause of kitchen drain backups. If several drains are slow at once, the problem may be in the main line rather than the disposal.
How to lower your garbage disposal installation cost
- Match the size to your household. Don’t pay for a 1 HP motor if a 1/2 HP unit fits how you cook.
- Ask about the existing mount. If the new unit can use the same mounting system as the old one, the swap is usually quicker.
- Bundle jobs. If you also need a new faucet or shutoff valve, doing it in the same visit avoids a second trip. If you’re planning bathroom work too, see what a new toilet costs to install in Los Angeles.
- Get a written quote. Ask what’s included before work starts.
- Look at financing and promotions. Check our financing plan and promotions page before booking.
The bottom line
For most homes, the garbage disposal installation cost comes down to the unit you choose and how much work the existing sink setup needs. Nationally, most homeowners pay roughly $200 to $625 according to Angi, and The 5 Star Plumbing’s typical price for garbage disposal replacement is $600–$800, with the exact price confirmed after the technician sees the job. If your disposal is leaking, jamming or simply worn out, The 5 Star Plumbing serves homeowners across Los Angeles, Orange County and the surrounding communities 24/7. Call (888) 909-0120 or contact us online, and learn more about our Los Angeles plumbing service.
Frequently asked questions: garbage disposal installation cost
How much does garbage disposal installation cost in 2026?
Nationally, Angi puts the typical garbage disposal installation cost at about $550, with most jobs between $200 and $625. This Old House lists an average of about $450 and a wider range of $150 to $950. The 5 Star Plumbing’s typical price for garbage disposal replacement is $600–$800; the exact price is confirmed after the technician sees the job.
How long does it take to install a garbage disposal?
Time affects labor, which is part of the garbage disposal installation cost. A straight replacement often takes about an hour, according to Angi and NerdWallet. Angi says installations can take one to four hours when there’s extra work, such as freeing a corroded unit or adjusting drain lines.
Is it cheaper to replace or repair a garbage disposal?
Simple fixes like clearing a jam or pressing the reset button cost little or nothing. This Old House lists repairs at $50 to $400. If the unit is leaking from the body or is about 10 years old, replacing it is usually the better value.
What size garbage disposal should I buy?
Angi recommends 1/3 HP for one or two people who cook occasionally, 1/2 HP for one or two people who cook daily, 3/4 HP for a family that cooks a few times a week, and 1 HP or more for four or more people or heavy home cooking. Choosing the right size keeps the garbage disposal installation cost in check.
Does adding a disposal where there wasn’t one cost more?
Yes. The garbage disposal installation cost is higher for a first-time installation because it may need new drain fittings, a dishwasher connection and an outlet or switch under the sink. Angi notes that some units may need a dedicated circuit installed by a licensed electrician, which adds to the total.
Do I need a permit to install a garbage disposal?
It depends on the scope of work and your city, and a permit fee would add to your garbage disposal installation cost. NerdWallet notes that permits, where required, typically cost $50 to $500 or more. A simple swap often doesn’t involve new wiring or drain lines, but ask your plumber whether your project needs one.
How long does a garbage disposal last?
This Old House and NerdWallet both put the typical lifespan at about 10 years. Angi gives a range of 5 to 10 years and says stainless steel models can last up to 15 years.
Can I put grease down the garbage disposal?
No. Orange County Sanitation District says never to pour fats, oil and grease down the sink or garbage disposal. Let grease cool, seal it in a container and throw it in the trash.
Sources: Angi — How Much Does It Cost to Replace a Garbage Disposal? · Angi — What Size Garbage Disposal Do I Need? · This Old House — Garbage Disposal Installation Cost · NerdWallet — Garbage Disposal Replacement Cost (2026) · Orange County Sanitation District — Fats, Oils & Grease Program · Los Angeles County Clean LA — Fats, Oils and Grease
