Menu

Call This Friday to Get $50 OFF

Garbage Disposal Replacement
4.8 RATING

Searching for garbage disposal repair in Chattanooga, TN? Mr. Rooter provides efficient replacements and expert installation for long lasting performance.

423-248-2096
Garbage Disposal Replacement

Garbage Disposal Replacement in Chattanooga, TN

Most people don't think about their garbage disposal until it stops working in the middle of cooking dinner. Mr. Rooter Plumbing gets called out for garbage disposal replacement in Chattanooga pretty regularly, and the job is almost never as simple as swapping one unit for another. There's more to it than the box at the hardware store suggests, including motor size, mounting systems, drain configuration, and electrical connections. If your disposal is giving you trouble, here's what you should know before you decide what to do next.

4.8 RATING

Searching for garbage disposal repair in Chattanooga, TN? Mr. Rooter provides efficient replacements and expert installation for long lasting performance.

423-248-2096

How to Tell If Your Garbage Disposal Needs Replacing or Repairs

Some problems are worth fixing, while others signal that the unit has run its course. Knowing the difference saves you money on a repair bill right before you end up buying a new unit anyway.

Leaks at the sink flange, a motor that hums but won't spin, and persistent odors that don't clear after cleaning are the three most common complaints. A hum with no movement usually means the motor is seized. That's repairable if the unit is less than five years old and the motor hasn't burned out. If the motor has burned out, a kitchen garbage disposal repair in Chattanooga stops making financial sense. Replacing the motor on a budget unit costs nearly as much as a new one.

Leaks tell a different story depending on where they originate. A leak at the top, near the sink flange, can usually be resealed. A leak at the side where the dishwasher drain connects is probably a failed gasket. Leaks from the bottom of the unit mean an internal seal has failed, and at that point, the unit is done. Age is also essential. Most disposals last eight to twelve years with normal use. If yours is past that window and showing multiple symptoms, replacement is the practical call.

Our Services

Garbage Disposal Replacement

Most people don't think about their garbage disposal until it stops working in the middle of cooking dinner. Mr. Rooter Plumbing gets called out for garbage disposal replacement in Chattanooga pretty regularly, and the job is almost never as simple…

Commercial Plumbing

Running a business comes with enough headaches, and your plumbing shouldn't be one of them. At Mr. Rooter Plumbing, we know that commercial plumbing systems are a different animal than what you'd find in a home. The pipe networks are…

Toilet Replacement & Repair

Mr. Rooter Plumbing replaces toilets for all kinds of reasons, from persistent clogs and cracks in the porcelain to homeowners who are tired of a unit that runs all night and drives up their water bill. There is more to…

Sump Pump Replacement & Repair

The only time most homeowners think about their sump pump is when the basement is already flooding. Mr. Rooter Plumbing wants you to think about it before that happens, because a sump pump replacement done on your schedule is a…

Reliable Water Softener Installation

Hard water is a problem that shows up everywhere once you know what to look for. Mr. Rooter Plumbing installs and services water softeners for homeowners who are tired of the white buildup on their fixtures, the dingy laundry, and…

Shower Repair & Replacement

A shower that isn't working right can ruin your day fast. Mr. Rooter Plumbing offers shower repair in Chattanooga, Tennessee, ranging from a showerhead with terrible pressure to leaks that have been soaking into the wall for months. Showers involve…

Water Line Replacement

Your main water line is the single pipe responsible for delivering water to every fixture in your home, and most homeowners have no idea what condition their line is in. Mr. Rooter Plumbing is ready to help. We get called…

Water Filtration Installation

What comes out of your tap isn't always as clean as it looks. Mr. Rooter Plumbing installs water filtration systems for homeowners who want to know exactly what they're drinking, cooking with, and bathing in, and the options available today…

Garbage Disposal Replacement

What the Different Motor Sizes Mean for Your Kitchen

Motor size is measured in horsepower, and the range runs from one-third HP on the low end to one full HP and above on the high end. A one-third HP motor is okay for light use in a single or two-person household. It will grind soft scraps without issues, but it struggles with fibrous vegetables, tougher rinds, and starchy food. A one-half HP unit is the standard for most households and will take care of everyday food waste without a problem. 

If you cook from scratch regularly, run a larger household, or process harder food waste, a three-quarter HP or one HP unit is the right choice. The upfront cost is higher, but the motor lasts longer. 

An experienced plumber in Chattanooga doing a garbage disposal installation will ask about your household size and cooking habits before recommending a unit. A motor that's undersized will wear faster and jam more frequently. A motor that's oversized is money spent unnecessarily. Matching the motor to real daily use is one of the more consequential decisions in the process.

Mr. Rooter Reviews

Read What Our Happy Customers Have to Say About Our Services

Ashley Alexander

Harrison, TN

I can not say enough great things about Joseph Tomlinson. We had to have our septic system dug up, and they had to find the exact cause of it backing up. Joseph knew exactly where to look and how to fix it, and knew exactly what he was talking about. I would highly recommend him to anyone who has any septic issues. Very knowledgeable, respectful, straightforward, and honest. He will be the reason that we continue using this company for our plumbing needs.

Brett Rucker

Chattanooga, TN

Seth from Mr. Rooter came out to our house on Saturday. He was prompt and very professional. Did an excellent job and fixed several problems, and thankfully stopped the leaking into our basement! I have used Mr. Rooter before, and they have been great every time. Thanks, Seth! Brett R.

Ongeleigh Underwood

Chattanooga, TN

Austin communicated very well throughout the entire process. He came out to check out a toilet and was courteous and knowledgeable about the issue. He even offered to bring a package inside for us as we were not home! Definitely recommend!

Andre Laplume

Fairmount, TN

I had one plumbing company that came out, and walked away from the job, because they had to go in the tank to change a pump out. At this point i had to get someone ASAP. I called Mr. Rooter and had Joseph come out to give a quote, and he came the next day. Great service, and he wanted to make sure I was happy. Great guy, I highly recommend Joe.

Garbage Disposal Replacement

How Mounting Systems Vary Between Disposal Brands

Most residential disposals use one of two mounting systems. InSinkErator uses a three-bolt twist-and-lock design. Moen, Waste King, and several other manufacturers use a mount with different bolt configurations. The two systems are not interchangeable without replacing the mounting hardware and potentially the sink flange.

This matters most when you're replacing a failed unit with a different brand. Homeowners who buy a replacement unit at the hardware store and discover the mounting system doesn't match the existing setup are one of the more common calls a garbage disposal installer in Chattanooga receives. The existing mount can be swapped out, but it adds labor and requires draining and resealing the sink flange, which is a messier job.

If you're replacing like-for-like, same brand and same product line, the mount usually transfers without issue. Moving to a different brand, or upgrading from a basic model to a premium line within the same brand, often means new mounting hardware. A local plumber doing the install will check this before the new unit arrives, so there are no surprises on the day of the job.

What a Professional Garbage Disposal Replacement Looks Like 

First, the plumber checks the existing drain configuration, confirms the electrical supply meets the new unit's requirements, and looks at the mounting hardware. The assessment determines whether the swap is a one-step job or if additional work is needed.

Disconnection comes next. The drain line comes off, the dishwasher drain gets capped or redirected, the unit is untwisted from the mount, and the electrical is disconnected at the junction box or unplugged from the outlet. If the sink flange is being replaced, which it should be if the existing one is corroded or misaligned, the old one gets knocked out, and the new one goes in with fresh plumber's putty. That seal needs to cure before the new unit goes on.

The new unit gets wired, mounted, and connected to the drain. The trusted plumbers run water and cycle the disposal through a test to check for leaks at every connection point. The dishwasher drain gets reconnected if applicable, and that connection gets checked, too. A garbage disposal installation that's done correctly takes one to two hours for a standard swap. If drain reconfiguration or electrical work is required, add time accordingly. Homeowners searching for kitchen garbage disposal repair in Chattanooga or a full replacement will find the job goes faster when the inspection is thorough up front.

Are You Looking for a Garbage Disposal Installer in Chattanooga, TN?

If your unit is leaking, seized, or far past its prime, don't put it off. A failed disposal that's left in place can leak into the cabinet below and cause water damage to the cabinet floor. Mr. Rooter Plumbing provides garbage disposal replacement in Chattanooga, Tennessee, for homeowners who want the job done right the first time. Give us a call today to book your appointment.

Coupons & Specials

$50OFF

Any Plumbing Service

Get $50 off any plumbing service $400 and more. Not valid with…

PRINT
10%OFF

Get 10% Off Today

Get 10% off your entire service. The maximum discount is $100. Not…

PRINT
$100OFF

Tankless Heaters

Get $100 off a tankless water heater installation today. Not valid with any…

PRINT
$35OFF

Toilet Replacement

Schedule toilet replacement today to get $50 off. Not valid with any…

PRINT
Plumbing FAQ

Frequently Asked Questions

How do I know when it's time to call a plumber instead of handling something myself?

If the repair involves the main water line, sewer system, gas lines, or anything that requires opening up walls or floors, a licensed plumber is the right call. DIY fixes have their place, but the wrong move on the wrong system can turn a small problem into an expensive one.  

Why does my toilet keep running after flushing?
What is considered a plumbing code violation?
How do I shut off the water in an emergency?
Is it normal for pipes to make noise?
What should I avoid putting down my drains?
How do I find a hidden water leak?
What causes low water pressure throughout the house?
Should I repair or replace my water heater?
What is the difference between a tank and a tankless water heater?
What are the signs that a water heater needs repair?
How long do water heaters typically last?
Why does my water heater keep making rumbling or popping noises?
What does a sewer line inspection involve?
How do I know if I have a plumbing emergency?
What causes drains to clog?
Can I use store-bought drain cleaner to clear a clog?
How often should drains be professionally cleaned?
What are the signs of a sewer line problem?
What causes sewer lines to fail?
What is trenchless sewer repair?
How do I know if my sewer line needs repair or full replacement?

Latest Updates & Blog Posts

Why Replacing an Old Toilet Can Save You Money Jun 05, 2026

Why Replacing an Old Toilet Can Save You Money

Do you have a home improvement project planned? If so, installing a…

Read More
How Water Softener Installation Improves Skin and Hair Health May 30, 2026

How Water Softener Installation Improves Skin and Hair Health

Did you know that water quality affects nearly every aspect of daily…

Read More
Why Old Faucets Waste More Water Than You Think May 23, 2026

Why Old Faucets Waste More Water Than You Think

Plumbing is a crucial part of residential and commercial properties. From providing…

Read More
How Water Line Damage Can Destroy Your Property May 14, 2026

How Water Line Damage Can Destroy Your Property

When it comes to protecting your home or business, few issues are…

Read More