KRAUS WasteGuard KWD100-75MBL, 3/4 HP Ultra-Quiet Garbage Disposal Review

If you’re looking for a garbage disposal that combines power, precision, and quiet performance, the KRAUS WasteGuard 3/4 HP (KWD100-75MBL) stands out as a premium choice in today’s market. It’s engineered for homeowners who want faster grinding, low noise, and an installation process that doesn’t require a call to the plumber. With heavy-duty stainless-steel components, a high-speed 3,800 RPM permanent-magnet motor, and a complete installation kit in the box, this model feels like a modern upgrade for any kitchen.

In this review, we’ll explore its design, performance, pros and cons, and how it stacks up against other 3/4 HP garbage disposals so you can decide if it’s the right fit for your home.

KRAUS WasteGuard KWD100-75MBL, 3/4 HP Garbage Disposal Specifications

Specification	Details
Brand	KRAUS
Model Number	KWD100-75MBL
Series / Pattern	WasteGuard 3/4 HP Ultra-Quiet
Horsepower (HP)	3/4 HP
Motor Type	MagnaGrind Permanent-Magnet Motor
Motor Speed	Up to 3,800 RPM
Feed Type	Continuous Feed
Housing Material	ABS + Stainless Steel Components
Grinding Chamber Size	40 oz Capacity
Dimensions	10.25″ (L) × 7.5″ (W) × 15.25″ (H)
Item Weight	10.36 lbs
Mount Type	Quick-Connect / EZLock
Dishwasher Connection	Yes – Included
Power Source	Pre-Installed Power Cord
Septic Safe	Yes – When Used as Directed
Batteries Required	No
Warranty	5-Year Limited Warranty

KRAUS WasteGuard KWD100-75MBL, 3/4 HP Garbage Disposal Key Features

Design & Build Quality

The KRAUS WasteGuard 3/4 HP shows clear attention to long-term durability and user comfort. Its stainless-steel grinding components are housed inside a corrosion-resistant ABS chamber that’s built to withstand daily use without rusting or getting noisy over time. The matte-black finish, paired with a stainless-steel flange, gives it a modern and premium look beneath the sink—ideal for homeowners who care about both function and aesthetics. Even with a strong motor, the chamber stays lightweight and easy to handle during installation.

With a 40 oz grinding chamber, this disposal is designed to manage larger food loads from family-sized meals without feeling cramped. The use of noise-dampening materials built directly into the housing helps cut vibration and rattle during operation. Compared to older builder-grade disposals, the WasteGuard feels more refined and better engineered for everyday use, making it a step up for anyone upgrading their kitchen system.

Grinding Performance

Powering the unit is a high-speed 3800 RPM MagnaGrind™ permanent-magnet motor, known for its fast acceleration and efficient waste breakdown. It handles most household scraps with ease—including vegetable peels, plate leftovers, fruit cores, and even small chicken bones (when used carefully). The higher RPM helps reduce food into finer particles, allowing it to pass smoothly through plumbing and reducing the likelihood of clogs.

What stands out is how consistently it maintains performance across repeated grinding sessions. Even when used back-to-back, the disposal doesn’t feel sluggish or strained. While it doesn’t feature multi-stage grinding like premium models, the speed and strength of the motor place it among the stronger performers in the 3/4 HP category. For busy kitchens that need reliable power, it delivers confidently.

Noise & Vibration

Quiet operation is one of the biggest selling points of this model. Thanks to the QuietStorm soundproofing system and anti-vibration mounting, it runs noticeably smoother than many comparable 3/4 HP disposals. You can carry on a conversation nearby while it’s running—a major improvement over older units that tend to shake the sink and echo through the cabinet space.

While it isn’t completely silent, the reduction in harsh noise makes a real difference during daily use. The sound is more of a “hum” rather than a grinding roar, and once mounted securely, vibration stays minimal. For open-concept kitchens or homes where nighttime dish cleanup is common, this level of quiet operation is especially valuable.

Installation & Ease of Use

Installation is engineered to be DIY-friendly. The EZLock quick-connect mount twists and locks into place, making alignment straightforward even for first-time installers. Plus, the pre-installed power cord eliminates the need for wiring or buying separate accessories. All essential components are included in the box—mounting flange, drain connector, dishwasher adapter, sink stopper, rubber gaskets—so you won’t need any extra hardware.

As long as your sink has a standard 3½″ opening, installation typically takes under an hour with basic tools. Daily operation is just as simple: turn on the switch, run water, and feed scraps steadily into the sink. The continuous-feed design supports routine plate clearing and sink rinsing without interruption, making this model feel intuitive and user-friendly right out of the box.

Safety & Everyday Use

KRAUS integrates practical safety features that protect both the user and the appliance. If something blocks the grinding chamber, the motor-saving shut-off automatically stops the unit to prevent damage. A reset button at the base lets you restore power instantly when the issue is cleared. This built-in safeguard adds confidence and reduces the risk of costly repairs.

It’s also septic-safe when used according to manufacturer guidelines. The extended tailpiece works as a safe plunger system to push scraps down, and continuous-feed operation keeps workflow steady. Used responsibly—with good water flow and common sense—it makes everyday cleanup efficient, cleaner, and more eco-friendly.

Warranty & Value

The WasteGuard 3/4 HP is backed by a 5-year warranty, placing it alongside some of the most trusted brands in this category. That coverage gives users peace of mind—especially considering the combination of stainless-steel internals, high-speed motor, and quiet operation. For a model that sits in the mid-to-upper tier, this warranty supports its premium positioning without charging a premium price.

When compared to basic builder-grade disposals, the value becomes clear: you’re getting stronger grinding, quieter performance, and easier installation without stepping into luxury pricing. With its blend of performance, durability, and user comfort, it offers excellent return on investment for homeowners looking to upgrade confidently.

KRAUS WasteGuard KWD100-75MBL, 3/4 HP Pros and Cons

KRAUS WasteGuard 3/4 HP Vs Top Competitors

Feature	KRAUS WasteGuard 3/4 HP	InSinkErator Badger 5XP	Moen Host Series (GX75C)
Horsepower	3/4 HP	3/4 HP	3/4 HP
Motor Speed	3800 RPM	1725 RPM	2700 RPM
Motor Type	Permanent-Magnet	Induction	Permanent-Magnet
Noise Level	Ultra-Quiet	Moderate	QuietSHIELD Insulation
Grinding Chamber	40 oz	~34 oz	~40 oz
Installation	EZLock Quick-Connect	Quick Lock	Xpress Mount
Power Cord	Included	Sold Separately	Included
Build Material	Stainless Steel + ABS	Galvanized Steel	Stainless / Polymer
Best For	Quiet Power & Easy DIY	Standard Use	High-Speed Compact Use

Conclusion

The KRAUS WasteGuard 3/4 HP stands out as an excellent choice for households wanting a powerful yet quiet disposal that doesn’t require professional installation. With its high-speed motor, stainless-steel internals, and DIY-friendly setup, it strikes a smart balance between performance and convenience.

If you’re upgrading from an older, noisy disposal—or you want a strong performer without jumping into luxury pricing—this model makes a compelling, well-rounded investment for a modern kitchen.