InSinkErator Evolution Excel vs Waste King L-8000: Which 1 HP Garbage Disposal Is Better?

Garbage disposals have become an essential part of modern kitchens, helping households manage food waste quickly and efficiently. When comparing premium and budget-friendly models, the InSinkErator Evolution Excel and the Waste King L-8000 frequently appear among the top 1 HP garbage disposal options.

Both units are powerful continuous-feed garbage disposals, but they are built using very different engineering approaches. The InSinkErator Evolution Excel emphasizes high-torque grinding, advanced noise insulation technology, and a premium build designed for long-term durability. In contrast, the Waste King L-8000 focuses on high-speed grinding, simpler installation, and strong performance at a more affordable price.

In this detailed comparison, we’ll examine key factors including motor performance, grinding technology, noise levels, installation process, build quality, and long-term reliability to help you determine which garbage disposal is the better fit for your kitchen.

Quick Comparison: InSinkErator Evolution Excel vs Waste King L-8000

Before examining the performance and design differences in detail, it helps to start with a quick overview of the key specifications that set these two 1 HP garbage disposals apart.

Feature	InSinkErator Evolution Excel	Waste King L-8000
Motor Type	High-Torque Induction Motor	Permanent Magnet Motor
Horsepower	1 HP	1 HP
RPM Speed	~1725 RPM	~2800 RPM
Feed Type	Continuous Feed	Continuous Feed
Grinding Technology	3-Stage MultiGrind System	Single-Stage High-Speed Grinding
Grinding Components	Stainless Steel	Stainless Steel
Mounting System	3-Bolt Mount	EZ Mount
Noise Reduction	SoundSeal Technology	Acoustic Foam Insulation
Chamber Capacity	37 oz (1.1 L)	30 oz
Weight	~19 lbs	~12 lbs
Power Cord	Not Included	Pre-installed
Warranty	10-Year In-Home Service	20-Year Limited

InSinkErator Evolution Excel quiet series 1HP Garbage Disposal

The InSinkErator Evolution Excel is one of the flagship models in the InSinkErator Evolution Series, designed as a premium 1 HP garbage disposal for kitchens that generate a large amount of food waste.

At the core of the unit is a 1-horsepower Dura-Drive induction motor, which prioritizes torque rather than extremely high RPM speed. This motor design allows the disposer to grind tougher food scraps—such as vegetable fibers, fruit peels, and small bones—more smoothly while reducing the likelihood of jams. Instead of relying solely on speed, the motor delivers consistent torque to the flywheel grinding mechanism, helping break down waste more efficiently and maintain stable performance during heavy loads.

One of the key technologies used in this disposal is the 3-Stage MultiGrind system. This multi-stage grinding setup breaks food waste into progressively smaller particles before flushing them through the plumbing system. The grinding chamber also incorporates specialized components such as swivel impellers, a stainless-steel grater ring, and the Tri-Action Lug system, which work together to move and pulverize food scraps for improved grinding efficiency.

Noise reduction is another major advantage of this model. The Evolution Excel includes SoundSeal noise reduction technology, which combines vibration-dampening mounts, insulation layers, and anti-vibration connections to significantly reduce operational noise. Compared with standard garbage disposals, this design produces a noticeably quieter grinding experience—an important benefit for open-concept kitchens where the sink area is close to living or dining spaces.

Another useful feature is the auto-reverse anti-jam system. When the disposal detects resistance or a potential blockage, the motor automatically reverses direction to clear the obstruction. This automatic unjamming mechanism helps reduce the need for manual intervention and protects the motor from overload during demanding use.

Waste King L-8000 1HP Garbage Disposal

Waste King L-8000 is a powerful garbage disposal device from the Waste King Legend Series. It is meant to provide powerful grinding performance at an affordable price. Although it is placed in the same 1 HP garbage disposal class as other high-end garbage disposal units, the Waste King L-8000 is focused on high-speed grinding, installation, and performance rather than multi-stage grinding.

At the heart of the Waste King L-8000 garbage disposal device is a 1-horsepower permanent magnet motor. Permanent magnet motors are quite different from the commonly used induction motors in high-end garbage disposal units. Permanent magnet motors are known for their high speed, and the Waste King L-8000 garbage disposal device can rotate at approximately 2800 RPM. This high-speed grinding ability allows the device to grind food waste into small pieces, making it quite efficient at handling everyday food waste, including vegetable peels, leftovers, and other food matter.

Inside the grinding chamber, the device employs a flywheel grinding mechanism, swivel impellers, and a grater ring. When food matter enters the grinding chamber, the flywheel mechanism forces the food matter into the swivel impellers and grater ring, where food matter is grinded into small pieces.

Another practical advantage of the L-8000 is its EZ Mount installation system. This is unlike the traditional 3-bolt mount disposal design because it allows for easier twisting and locking of the disposal unit during installation. This makes it even more desirable for users who want a DIY installation of the disposal unit without having complex installation equipment.

The L-8000 also comes pre-equipped with a power cord. This makes it easier compared to similar disposal units that users will be required to purchase a separate power cord kit for installation. This is, therefore a desirable disposal unit for users because it eliminates additional installation costs.

Although it is equipped with basic acoustic foam insulation for noise reduction, it does not have the same advanced noise reduction technology as some of its counterparts. This makes it louder during grinding operations compared to similar disposal units on the market.

InSinkErator Evolution Excel vs Waste King L-8000 – In-Depth Comparison

Motor Performance

Although the InSinkErator Evolution Excel and Waste King L-8000 disposers are both equipped with a 1 HP motor, there is a difference in their grinding performance due to the motor technology used.

The InSinkErator Evolution Excel uses a high-torque induction motor that spins at a low speed but has more grinding power. It uses this motor to work with the flywheel grinding mechanism, the swivel impellers, and the grater ring grinding system to grind tough waste more smoothly and with less motor stress.

The Waste King L-8000 uses a permanent magnet motor that spins at a very high speed. It uses this motor to grind waste quickly, making it more suitable for everyday use, although it produces slightly more noise and vibration while in use.

In other words, the InSinkErator Evolution Excel uses more torque to grind waste more smoothly, while the Waste King L-8000 uses more speed to grind waste quickly.

Grinding Technology Comparison

The InSinkErator Evolution Excel disposal employs a more advanced grinding mechanism than the Waste King L-8000, which influences the effectiveness of these disposers in dealing with food waste.

InSinkErator Evolution Excel employs a 3-Stage MultiGrind mechanism, which grinds food waste into finer pieces before flushing them down the drains. This mechanism is complemented by the GrindShear grinding ring and the Tri-Action Lug mechanism, which enable the disposal unit to grind even hard food waste like fibrous vegetables and small bones.

Waste King L-8000 employs a single-stage grinding mechanism, which employs stainless steel impellers and a grater ring. Instead of employing several stages of grinding, this disposal employs the high-speed motor to grind food waste into small pieces.

In terms of the effectiveness of these disposal units in dealing with food waste, the InSinkErator Evolution Excel employs a more refined mechanism, while the Waste King L-8000 employs a faster mechanism.

Noise Level

Noise is one of the major differences between the InSinkErator Evolution Excel and the Waste King L-8000. The Evolution Excel is designed with SoundSeal technology for reducing noise levels. This includes multiple layers of insulation and vibration-dampening mounts, as well as a sealed grinding chamber housing. Additionally, it is able to operate more smoothly and quietly due to its use of a high-torque induction motor, reducing vibration and overall noise level.

The Waste King L-8000 includes acoustic foam insulation, but it lacks vibration control and other advanced sound-dampening technologies. Additionally, it utilizes a permanent magnet motor, making it more noisy during grinding operations.

The Evolution Excel is considerably quieter and more appropriate for use in an open-concept kitchen, whereas the Waste King is more suitable for short grinding cycles due to its higher noise level.

Build Quality & Durability

The Evolution Excel garbage disposal has been built with a solid and sturdy body, which makes it a heavy-duty garbage disposal. The disposal also has a stainless steel grind chamber and a vibration reduction system, which helps the disposal to be more stable while it operates. The overall body of the Evolution Excel garbage disposal is more solid and sturdy due to the presence of thicker insulation and more precise grinding components.

On the other hand, the Waste King L-8000 also has stainless steel impellers and grinding components, which make it more durable and resistant to corrosion. The overall body of the Waste King L-8000 disposal system is not as solid and sturdy as the Evolution Excel disposal system. The overall body of the Waste King L-8000 disposal system is lighter and easier to install.

Mounting System

3-Bolt Mount (InSinkErator Evolution Excel)

The Evolution Excel uses the 3-bolt mount disposal installation system, which is considered the standard installation mounting design for garbage disposal units. This mounting design secures the disposal unit to the sink flange using a mounting ring and 3 bolts. This mounting design is considered very stable and secure for disposal units, ensuring maximum stability and minimizing vibration during grinding operations.

However, it is considered more complicated, especially because of its weight and installation complexity, especially for the Evolution Excel, which is considered a heavy-duty disposal unit and might need careful installation for under-sink disposal.

EZ Mount (Waste King L-8000)

On the other hand, the Waste King L-8000 uses the EZ Mount installation system for its disposal unit. This mounting design is considered very convenient for installation and is designed for the quick installation of the disposal unit. Using a twist-and-lock design, the disposal unit is easily attached and locked securely onto the sink flange. This design is considered very convenient for DIY installation and is suitable for replacing an older disposal unit.

Both disposal units can accommodate a standard dishwasher outlet and disposal installation plumbing for a standard discharge tube plumbing setup.

Dimensions, Weight & Space Requirements

The physical size of these two garbage disposal units is an essential consideration when deciding between the InSinkErator Evolution Excel and the Waste King L-8000, especially if you have limited space under the sink of your kitchen cabinet.

The Evolution Excel measures approximately 13.5 inches in height and is rather wider, accommodating its larger grinding chamber and insulating materials. Although it is shorter than the Waste King L-8000, it is bulkier and more cumbersome due to its weight, measuring 19–25 pounds. This is because of its reinforced housing and insulating materials.

The Waste King L-8000 is longer and bulkier, measuring more in height. Although it is lighter, its longer and bulkier design makes it more cumbersome and less convenient for installation.

Energy Consumption & Motor Efficiency

Energy usage differs slightly between the InSinkErator Evolution Excel and the Waste King L-8000 because they use different motor technologies.

The Evolution Excel typically draws about 10.2 amps (around 1200 watts) during operation, while the Waste King L-8000 uses roughly 7 amps (about 800 watts). This makes the L-8000 somewhat more energy-efficient in terms of electrical consumption.

This difference is mainly due to motor design. The Excel uses a high-torque induction motor, which consumes more power but delivers stronger grinding force and smoother operation. The L-8000 uses a permanent magnet motor, which reduces electrical losses and operates more efficiently.

Pros and Cons

InSinkErator Evolution Excel

Waste King L-8000

Which Garbage Disposal to Choose?

Both InSinkErator Evolution Excel and Waste King L-8000 are high-end 1 HP garbage disposals. Although they have different features and priorities in their design, they both provide high-end performance. InSinkErator Evolution Excel has quiet operation, advanced grinding technology, and premium features. Waste King L-8000, on the other hand, provides speed, simplicity, and cost-effectiveness in its design.

When to Choose InSinkErator Evolution Excel?

• If you want a quiet garbage disposal with the best quiet operation technology available
• If your kitchen generates high volumes of waste (large families or high-cooking activity)
• If you want a premium product with a heavy-duty design and multi-stage grinding technology

When to Choose Waste King L-8000?

• If you want the best value for your money in a 1 HP garbage disposal
• If you prefer a DIY installation with a pre-installed power cord
• If you want fast grinding performance with a high RPM permanent magnet motor

Final Verdict

Both the InSinkErator Evolution Excel and the Waste King L-8000 garbage disposals are powerful 1 HP models, each with different priorities. The Evolution Excel model stands out as the premium model due to features like quieter operation, the 3-stage MultiGrind system, and the high-torque induction motor for easy disposal of tougher food waste. It would be the perfect option for households with larger families and for those who cook frequently.

The Waste King L-8000 stands out as the best option for those with a budget due to features like the high-speed permanent magnet motor for faster disposal, the EZ Mount system for easy installation, and the pre-installed power cord for easy DIY installation.