5 Best Garbage Disposals for Deep Sinks – Reviews and Buying Guide

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Last updatedLast updated: November 13, 2021
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The modern kitchen designs aim at providing maximum comfort in the kitchen while amplifying the décor. This is why deep sinks have increasingly become popular. Most deep sinks are incompatible with the standard under-sink garbage disposals on the market, but that doesn’t mean you can’t have them both. There are multiple brands and models of garbage disposals for deep sinks out there that even choosing one for your kitchen can be a daunting process.

The best garbage disposal for deep sinks will help you discard all the food-based waste on your highly functional sink efficiently. We came up with this guide to help you choose the best garbage disposal for a deep sink without much hassle. Some of the imperative features we considered in our product reviews include speed, capacity, dimensions, horsepower, feed type, and warranty. They are crucial because they determine the garbage disposal’s compatibility with your sink, their quality, and efficiency.


Waste King L-3200Editor's Choice

  • Dimensions: 7.75 x 7.75 x 13.75 inches
  • Horsepower: ¾ HP
  • Speed: 2,700 RPM
  • Feed type: continuous
  • Grind component: stainless steel
  • Warranty: 8-year

Other features: stainless steel drain flange, EZ-Mount, pre-installed power cord

It is nearly impossible to round up the best garbage disposals for deep sinks and miss the Waste King on the list. Waste King is a world-famous brand popular for its powerful and reliable garbage systems. The L-3200 is nothing short with its durable build and powerful performance.

The unit is made to last with corrosion-proof stainless steel and rust-resistant grinding components. It sets itself apart with its compact and lightweight yet sturdy build. Therefore, it is a fantastic option for small or already cramped up kitchen.

Because of its size, installing it is a breeze. Plus, it comes with a 36-inch power cord, giving you great value for your money. Also included is a removable splashguard that makes cleaning easy pizzy.

When it comes to grinding waste, it is hard to match the L-3200. Though small in its build, it combines a ¾ horsepower with a respectable 2700RPM. There’s nothing you couldn’t crush with this power.

Essentially, the unit operates quietly and swiftly, thanks to its ability to dampen sound making.

What We Liked: For an exceptional long-lasting performance, the L-3200 is the way to go. Its powerful motor can grind waste into liquid form, making it the ultimate choice if you have a septic tank. You will never experience clogging or jamming.

What Could Be Better: As much as the gadget is expected to last long, it has some plastic parts that can wear out quickly.

What makes it special?

  • Compact and lightweight
  • Comes with a removable splash guard
  • Dampens sound making
  • Corrosion and rust-resistant blades

What cons did we find?

  • Plastic parts can wear out quickly
  • Dimensions: 13 x 12 x 12 inches
  • Horsepower: 1 HP
  • Speed: 1,725 RPM
  • Feed type: continuous
  • Grind component: alloy stainless steel
  • Warranty: 7-year

Other features: Dura-Drive induction motor, three grind stages, Sound Seal Plus, auto-reverse grind system

InSinkErator is another popular brand known for premium quality garbage disposal units. The Evolution Excel builds up to this reputation with its high-quality and good-looking construction. It stays true to its name by excelling many other garbage disposal models in various aspects.

This model has a striking appearance owing to its stainless steel finish that easily blends in with any kind of interior décor. It is also super lightweight and compact enough to fit in virtually all kitchen sizes.

The unit features a 1 Hp motor that runs at an impressive 1725RPM. When combined with the 3-stage grinding system, the motor can crush the toughest food waste materials.

Like all the other InSinkErator garbage disposals, the Evolution Excel comes second to none in terms of noise insulation. The incredible Sound Seal technology incorporated in its build takes noise insulation to another level, giving you an ultra-quiet performance.

The Evolution Excel is a continuous feed type disposal with a large grinding chamber that can hold waste materials of up to 40 ounces. It also has a couple of features that give it a competitive edge over other models, like an auto-reverse grind system and jam-sensor circuit. They both prevent it from jamming regardless of how tough the food items are.

What We Liked: With a 10-year warranty, this is one of the best garbage disposals for deep mount sinks that money can buy.

What Could Be Better: The model costs a pretty penny, and it takes time to drain, so your sink can fill up with water quickly.

Why did it make our list?

  • Exceptionally powerful motor
  • Large capacity grind chamber of 40 ounces
  • Sound dampening technology for an ultra-quiet operation
  • Durable stainless steel construction
  • 10-year warranty

What is not ideal about it?

  • Premium price
  • Slow to drain
RELATED: 10 Best Quiet Garbage Disposals to Offer You a Comfortable Cleaning Routine

Waste King Knight A1SPCBest Design

  • Dimensions: 9 x 9 x 15.9 inches
  • Horsepower: 1 HP
  • Speed: 2,800 RPM
  • Feed type: continuous
  • Grind component: stainless steel
  • Warranty: lifetime limited

Other features: standard 3-bolt mount, Exclusive Silencer Technology, pre-installed power cord

This is another top-tier model with marvelous features that will undoubtedly enhance your garbage disposal experience. It is a perfect option for super-busy kitchens in homes with extended families or commercial kitchens.

The Knight A1SPC is adorned by an elegant stainless steel build that is bound to last you long. It is one hell of a grinding monster with its 1HP motor that puts out a whopping 2800 RPMs. In fact, unlike most garbage disposals, the knight A1SPC doesn’t use multi-stage grind technology. It is powerful enough to shred all your food waste items in one go.

As if that’s enough, this model is one of the quietest garbage disposal units out there. It features a silencer technology similar to the one used to soundproof music studios. This guarantees you a quiet garbage disposal experience.

To top it all, the unit comes with a pre-installed cord, saving you some pocket change as most models require you to get the cord separately. Installing the entire gadget is a no-brainer, thanks to its standard 3-bolt mount.

What We Liked: The knight A1SC is a stunning beauty to look at and a beast when it comes to functionality. Its powerful motor and unique silencer technology set it apart as a solid performer. What’s more, you don’t have to dig deep into your pockets for it, and you get a limited lifetime warranty.

What Could Be Better: Some users have complained that the unit loses RPMS when processing huge chunks of food waste.

What are our favorite features?

  • Exceptionally quiet operation
  • Powerful motor with superior grinding technology
  • Durable stainless steel components
  • Installs easily
  • Jam-free disposal feeds

What could be better?

  • -

InSinkErator Badger 5Best Value

  • Dimensions: 6.31 x 6.31 x 11.5 inches
  • Horsepower: 1/2 HP
  • Speed: 1,725 RPM
  • Feed type: continuous
  • Grind component: galvanized steel
  • Warranty: 2-year limited

Other features: Dura-Drive induction motor, Quick Lock® mounting system

Meet the badger 5, a short yet powerful garbage disposal unit from the trusted brand InSinkErator. It is best suited for a small household looking for the most economical solution to disposing of food waste. It doesn’t come with any fancy features like other models on this list, but it is one of the best garbage disposal units globally because of its pocket-friendly price.

The machine comes in a robust galvanized steel body that will undoubtedly stand the test of time. It is incredibly compact with a 26-ounce chamber capacity, thus suitable for any kitchen size. Its ½ HP dura-drive induction motor works to munch and crush different kinds of food waste items.

You will love how easy it is to install the unit. Its matte black finish blends well with any kitchen décor style.

What We Liked: Although it is small, the badger 5 delivers on its power grind promise. It will make your life easier in the kitchen by effectively disposing off your food waste items from the sink. Moreover, you don’t need to spend a fortune to own it.

What Could Be Better: Unlike other InSinkErator garbage disposal units, this one doesn’t have any sign of sound dampening technology. Also, it doesn’t come with a power cord, and that means you have to incur extra costs.

What makes it special?

  • Compact yet sturdy build
  • Fairly large chamber
  • Durable galvanized steel construction
  • 2-year limited warranty
  • Offers excellent value money

What cons did we find?

  • Doesn't come with a power cord
  • No sign of sound dampening

Moen GX50CBest Installation

  • Dimensions: 9.69 x 9.39 x 14.88 inches
  • Horsepower: 1/2 hp
  • Speed: 2,600 RPM
  • Feed type: continuous
  • Grind component: stainless steel
  • Warranty: 5-year limited

Other features: SoundSHIELD insulation, simple twist-and-lock installation

This another one of our best value options because it is the most impressive model with a ½ HP horsepower motor. Garbage disposal units within its range are usually noisy and weak, but we can confidently assert that the Moen GX5OC is a real game-changer.

The model comes in a beautiful black and grey casing. Its continuous mouth feed is made of stainless steel; thus will last you a good one.

Its ½ HP motor runs at 2600 revolutions per minute. This is enough to grind all of your food waste material to a pulp. Moen even claims that you can use it with a properly sized septic tank.

Further, the unit is incredibly easy to install as all you need to do is twist and lock. Its mount is designed to easily fit existing 3 bolt-mounts like the InSinkErator ones. The pre-installed power cord also contributes to the easy installation. If you choose to do hardwiring yourself, you can remove the power cord.

Unlike many disposals within its range, the Moen GX50C does a good job at reducing noise with its SoundSHIELD insulation technology.

What We Liked: With a 5-year warranty, this is one of the best garbage disposals out there in terms of durability, functionality, and value for money. It is also a beautiful piece of technology, if you care for aesthetics. Its pre-installed power cord is an added bonus as it not only saves you some pocket change but also makes installation a breeze.

What Could Be Better: Since it is a budget choice, the Moen GX50C doesn’t have the best sound insulation like the advanced models. Therefore, you might find it a bit noisy.

What do we love it for?

  • Beautiful sleek and modern design
  • Rugged build
  • SoundShield insulation
  • Easy installation
  • Can be used with a properly sized septic tank
  • Offers excellent value for money
  • 5-year warranty

What were we disappointed with?

  • A bit noisy

Things to Consider

Before buying a garbage disposal for your deep sink, it is important that you consider certain aspects for you to make the best buy. This section has all the information that will help you gain the buyer’s confidence needed to make the best-informed choices. You will discover that you should have bought a garbage disposal long ago and also know the features that any good unit must possess.

Why buy a garbage disposal for a deep sink?

5 Best Garbage Disposals for Deep Sinks - Reviews and Buying Guide

Here are some solid reasons why buying garbage disposal for a deep sink is one of the best investments you’d have made in a long time:

Easy cleaning

Whether you are a clean freak or not, a garbage disposal will change your life for the better. Cleaning your kitchen will be such a walkover as the garbage disposal easily gets rid of dirty water and food wastes. If you get a disposal with a powerful motor, you can also grind tough food wastes like bones.

Reduces the amount of waste

Generally, we produce a lot of food in our households, and they make up the largest portion of overall waste. A garbage disposal will grind all your food wastes minimizing on the amount left to throw away. This saves the environment and lessens the work involved in handling tons of garbage.

No bad smell

Keeping food waste in the house normally brings a bad odor in the house. A garbage disposal will grind it fast before it stays long to rot, leaving your house clean and fresh.

Features to consider when choosing a garbage disposal for deep sink

These are the key features that determine the durability and functionality of a garbage disposal for a deep sink:


The size of the disposal really matters as it determines the amount of space it will be occupying and the amount of garbage you will be able to get rid of. If you have a large family, consider buying a relatively large garbage disposal that can effectively dispose of all the food wastes in your household.

5 Best Garbage Disposals for Deep Sinks - Reviews and Buying Guide

You must also check to see that you have enough space under your sink to accommodate the garbage disposal you want to buy as you only fit the right size.

Motor power and speed

You need to choose the power and speed depending on the types of food waste you will be disposing of. For super-easy cleaning, you may want to grind even the toughest food waste materials like bones, and that requires a powerful motor with about 1 HP and over 2500 rotations per minute.

If you have a super-busy kitchen, then you’ll also need a garbage disposal unit with a powerful motor like the Waste King Knight A1SPC.

Feed type

Disposals have 2 basic feed types: continuous feed type and batch feed type. Continuous feed disposals are the most popular because they are easier to use. They simply turn on and off with a wall switch. Batch feed disposals are a rarity because they are pricier and a bit complicated to operate. Unlike continuous feed disposals that are open mouth, they require you to fit a stopper lid into their mouth to activate. On the bright side, it is safer because you cannot start the unit when your hand is fishing down inside it and, it would never turn on when important things like cutlery accidentally slip into it.

Grinding components material

The grinding components are the ones that crunch down food waste items. They should be made of the best quality materials for longevity. Stainless steel is the best material because it is corrosion and rust-resistant. It is also sturdy enough to deal with different kinds of food waste items.

Sound insulation

This is a crucial consideration if you feel you have enough noisy appliances and gadgets in your kitchen. Most people assume that a small disposal with a less powerful motor is likely to be quieter than the large, powerful models. It is the other way round. Large disposals with powerful motors will have good sound dampening systems that work to ensure they operate quietly while their less powerful counterparts lack proper sound insulation.

How you attach the disposal also affects its noise level. To be on the safe end, just buy a disposal with proper sound insulation around the grinding chamber like the InSinkErator Evolution Excel garbage disposal.


Most people complain that their garbage disposal is noisy, yet it is their sink that is actually vibrating. After installing, the unit, ensure the sink is not vibrating for a swift and less noisy operation.


This is a huge plus as it is an anti-jamming feature that allows the motor to reverse in case something gets stuck in the disposal’s grinding chamber. This helps it crush down large and tough food waste items with ease as well as prevent unnecessary overloads that shut down the disposal.


5 Best Garbage Disposals for Deep Sinks - Reviews and Buying Guide

This is important as you may encounter trouble using the disposal. The longer the warranty, the better. Some manufacturers offer a generous backing of up to 10 years, while some even offer a limited lifetime backing like the Waste King Knight A1SPC.


This depends on the amount and type of food waste you intend to dispose of. ½ HP is powerful enough to grind soft food waste material for a small household.

No. Not all garbage disposal models are fit for all sinks. You have to find one that is compatible with your sink, and you can do this by contacting your local plumber.

Our Verdict

A garbage disposal for a deep sink is a must-have if you value cleanliness and convenience. With so many options to choose from, you can lose it and end up with a unit that doesn’t meet your needs. Thankfully, we have provided a few tips and hints to help you choose right. You can as well choose any of the high-tier products we have reviewed in detail. Top on our list, the Waste King L-3200 is the best all-around model that you can buy with your money. It is easy to install and use and is powerful enough to grind different kinds of food waste items.

The premium choice, the InSinkErator Evolution Excel garbage disposal, is the best silent and powerful disposal you can get for your super busy kitchen. Its 3 grind stages and auto-reverse grind system set it apart from its peers. Its durability is also a solid bet as its grinding components are made of stainless steel alloy.

The third position went to the Waste King Knight A1SPC. It is also a high-end option. Its sturdy stainless steel build and powerful motor deliver on its promise of a solid performance. Its exclusive silencer technology is what distinguishes it from other models within its range. The A1SPC is a bit pricey, thus one of the best garbage disposals for deep sinks in busy commercial kitchens.

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