Key takeaways
- 1/3 to 1/2 horsepower: Suitable for one or two people with light food waste.
- 3/4 horsepower: A common choice for families. Makers generally describe it as handling a wider range of scraps with fewer jams.
- 1 horsepower: Heavier use, bigger households and frequent cooking. Larger and heavier.
If “non-covered” means a continuous-feed disposal that runs from a wall switch without a batch-feed stopper cover, the InSinkErator Badger and Evolution lines, the Waste King Legend series and Moen’s disposals are the usual choices; pick a 1/2 horsepower unit for light use, a 3/4 horsepower unit for family kitchens, and a 1 horsepower unit for heavy use. Batch-feed models are the safer-by-design alternative if you want the sink opening covered while it runs.
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Continuous-Feed Disposals at a Glance
| Model line | Best for | Stated specs | Limits |
|---|---|---|---|
| InSinkErator Badger 5 | Light to moderate use, small households | The maker lists a 1/2 horsepower motor | Less capable on tougher scraps |
| InSinkErator Evolution Compact | Tight under-sink spaces | Maker lists a 3/4 horsepower motor and compact body | Mid-range tier |
| InSinkErator Evolution series (higher models) | Family kitchens, quieter operation | Maker lists higher horsepower and added sound insulation on select models | Larger body and higher tier |
| Waste King Legend L-2600 | Budget-minded buyers wanting 3/4 horsepower | Maker lists a 3/4 horsepower motor | Fewer sound features |
| Waste King Legend L-8000 | Heavy use, big households | Maker lists a 1 horsepower motor | Heavier unit; check mounting |
| Moen GX and GXP series | Buyers who prefer a faucet-maker brand | Maker lists models from 1/2 to 3/4 horsepower | Details vary by model |
Check the maker’s page for the specific model’s horsepower, dimensions and mounting system before buying, since names and specs vary across product years.
What “Non-Covered” Means Here
Disposals fall into two feed styles. Continuous-feed models run while you push scraps in through the open sink drain, controlled by a wall switch or air switch. Batch-feed models require a stopper or cover that you set into the drain to start the grinder. This guide treats “non-covered” as continuous-feed, since those do not use a cover. If you meant a different feature, such as a model without sound-insulating cover material, the horsepower and mounting guidance below still applies.
Safety trade-off
The open drain on continuous-feed models means you should never put your hand or utensils in while it is connected to power. Turn off the switch and, for any repair or jam clearing, disconnect power at the breaker or unplug the unit. Households with small children may prefer batch-feed models, whose design makes accidental starting less likely.
Horsepower and Grinding Needs
- 1/3 to 1/2 horsepower: Suitable for one or two people with light food waste.
- 3/4 horsepower: A common choice for families. Makers generally describe it as handling a wider range of scraps with fewer jams.
- 1 horsepower: Heavier use, bigger households and frequent cooking. Larger and heavier.
Higher horsepower does not make a disposal safe for everything. Fibrous foods, bones, grease and starchy items can still cause clogs or damage. Follow the maker’s list of items to avoid.
Mounting, Fit and Plumbing
Sink opening and mount style
Most standard kitchen sinks use a 3.5 inch drain opening and a mounting assembly the disposal attaches to. Some models use quick-lock mounts that simplify replacement. If you are replacing an existing unit, check whether the mount matches before buying.
Under-sink space
Measure the height from the sink flange to the cabinet floor or a shelf. Compact designs suit tight spaces, but dishwasher and trap connections also take room. Check the unit’s overall height and the discharge outlet location.
Electrical connection
Some models come with a power cord and plug into an outlet under the sink, while others are hardwired. Installation involves electricity and plumbing, so hire a licensed electrician or plumber if you are not experienced, and follow local codes and the maker’s manual.
Noise and Features
Sound insulation varies by model. Higher-tier disposals often add insulation, vibration dampening and larger grinding chambers. Entry-level models are louder. Other features that makers advertise include anti-jam mechanisms, corrosion-resistant grind components and auto-reverse functions. Weigh these against budget, since a basic model can serve for years with sensible use.
Budget Tiers
- Budget: InSinkErator Badger 5 and Waste King entry-level models. Basic grinding, less sound insulation.
- Mid-range: 3/4 horsepower models from InSinkErator Evolution Compact, Waste King and Moen.
- Premium: Higher-end Evolution models, which makers describe as quieter and more powerful, and larger Waste King units.
Pick X If …
| Pick this | If you … |
|---|---|
| Badger 5 | cook lightly for one or two people |
| Evolution Compact | have limited cabinet space and want 3/4 horsepower |
| Waste King L-2600 | want a 3/4 horsepower unit in a lower tier |
| Waste King L-8000 | feed a large household and want 1 horsepower |
| Moen GX series | prefer a plumbing-fixture brand and standard mounting |
| Batch-feed model | have small children and want a cover during operation |
Care and Maintenance
Run cold water while grinding and for several seconds afterward to flush debris. Avoid grease, coffee grounds in large amounts, fibrous vegetables like celery in bulk, bones and fruit pits unless the maker says otherwise. Clean with ice and citrus peels or a manufacturer-approved cleaner, and never use harsh chemicals that can damage seals. If it jams, turn it off, disconnect power, and use the maker’s recommended tool, such as the hex-key slot at the bottom, to free it. Never reach in by hand.
Alternatives
- Batch-feed disposals: Cover-operated and often preferred where safety is a priority.
- Kitchen compost bin or countertop composter: Keeps scraps out of plumbing entirely.
- Sink strainer and trash disposal: Suitable for households with septic systems or restrictions on disposals.
Installation Planning
Replacing an existing disposal is usually simpler than installing a first one. If your sink already has a flange and mount, many makers describe a quick-lock replacement process that takes a short time. A first-time installation may require a new drain opening, an electrical outlet or switch, and a dishwasher connection. These tasks are best handled by a licensed professional if you are not experienced.
Dishwasher connection
If you have a dishwasher, its drain hose connects to the disposal’s inlet. Many new units have a knockout plug that must be removed before connecting the hose, and forgetting this step can cause the dishwasher to back up. Follow the instructions in the manual closely.
Switch and power
A continuous-feed disposal is controlled by a wall switch or an air switch mounted on the countertop. Make sure the switch location is convenient and out of the reach of small children. Disposals should be connected to a circuit that complies with local electrical codes, and any hardwiring should be done by a qualified electrician.
Warranty and service
Makers list warranty periods that differ by model, and premium models often include longer coverage. Read what is covered and whether professional installation is required to keep the warranty valid.
Odor and cleaning habits
Odors usually come from food residue rather than the disposal itself. Running cold water, grinding small amounts at a time and cleaning with ice or manufacturer-approved cleaners helps. If a persistent smell remains, check the drain trap and consult a plumber.
Grind Components and Build Materials
Makers describe the grinding assembly in different ways, such as stainless-steel grinding elements, galvanized steel housings or corrosion-resistant coatings. Stainless components are generally associated with longer life in wet conditions, while lower-tier models may use galvanized parts. Some units use a fixed set of lugs, others use swivel impellers, and the maker will describe which design it uses. Read these notes together with the warranty, since a longer warranty often reflects more durable construction.
Also check the unit’s weight. Heavier disposals with more insulation can strain older sink mounts, so confirm that your mounting assembly is rated for the model you choose.
Frequently Asked Questions
Do I need a disposal with a cover?
No, it depends on your preference. Continuous-feed models do not use a cover and are convenient, while batch-feed models add a stopper that reduces accidental contact. Choose based on household needs.
Can I install a disposal myself?
Many people do, but the job involves plumbing and electrical connections. If you are unsure, hire a licensed plumber or electrician. Follow the manual and local code, and disconnect power before working.
Is a bigger horsepower always better?
Not necessarily. Larger motors handle heavy use but cost more and take more space. For a small household a 1/2 or 3/4 horsepower unit is usually adequate.
Are disposals safe for septic systems?
Some septic systems struggle with the extra solids. Check with a septic professional before installing, and look for models the maker says are compatible with septic systems.
What should never go down a disposal?
Grease, oils, bones, fibrous or stringy foods, and non-food items. The maker’s manual lists specifics. When in doubt, throw it out or compost it.
How long does a disposal last?
Lifespan varies with use and model. Makers offer warranties that range from a few years to longer on premium lines. Good care extends life.
