Key Takeaways
- Reduce kitchen waste and odors by grinding food scraps with a garbage disposal.
- There are two types of garbage disposals: continuous feed and batch feed.
- Horsepower is important and based on use. For light use, get a 1/3–1/2 HP. For heavier cooking, select one with 3/4–1+ HP.
- Features include: durable parts made of stainless steel, multi-stage grinding and noise reduction.
- Select a disposal that's compatible with your sink, plumbing and septic system.
- To prevent clogs, perform occasional maintenance.
Types of Disposals: Continuous Feed vs. Batch Feed Garbage Disposals
Garbage disposals come in two feed types: batch feed and continuous feed.
Batch Feed Disposals
Batch feed disposals can only be turned on by putting a special magnetic stopper in place. These models prevent objects from accidentally falling into the disposal when in use. With this type of model, you can insert food waste in batches and run it all at one time. A batch feed garbage disposal is likely the best disposal choice for locations where adding an electrical switch isn't viable.
Continuous Feed Disposals
Continuous feed disposals operate as long as the power is switched on, so you can clean up as you go. Continuous feed garbage disposals typically involve a wall switch, sink-top switch activator or power outlet below the countertop. This variety is the ideal choice for most households and is the most commonly installed type of disposal.
Most sinks are compatible with a garbage disposal. If you’re adding a new disposal as part of a complete kitchen sink replacement, check the manufacturer’s specifications before purchasing. Some bar sinks have drains that are too small and may not be compatible.
What Horsepower Garbage Disposal Do I Need?
Garbage disposal motors come in varying horsepower (HP) ratings, anywhere from 1/3 HP to 1 HP or even higher. Horsepower determines how much a disposal can grind. If you plan to use your disposal often or have a large household, opt for a model with more power. Below is a breakdown of common HP ratings and their capabilities.
- 1/3 HP: Best for use in small households of up to two people. Recommended for light-duty jobs only.
- 1/2 HP: Ideal for light- to regular-duty jobs in households of two to four people.
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5/8 – 3/4 HP: Best for medium-duty jobs in households of three to five people.
- 1 – 1-1/4 HP: Ideal for larger households of four or more people. Can handle heavy-duty jobs.
Refer to the chart above for grinding guidance, including the types of foods and scraps certain HP ratings can handle.
Garbage Disposal Features and Accessories to Consider
- Sink-Top Switches: Sold separately, this alternative to a wall switch operates using air pressure and can be installed with a continuous-feed garbage disposal. An ideal switch solution for kitchen islands, it prevents you from having to hardwire to a wall switch.
- Power Cord: Power cords are included with your machine or sold separately. You’ll need a cord if plugging your disposal into an outlet when installing. If you plan to hardwire your disposal and the model you’re considering has an attached power cord, read the product instructions for guidance.
- Auto-Reverse: Some disposals include an auto-reverse feature that automatically spins the grind table in the opposite direction to help loosen and process lodged food, preventing jams.
- Stainless Steel Grind Chamber and Components: Disposals with grind chambers and components made of stainless steel often last longer.
- Quick-Mount Feature: This mounting design allows for easier installation as the mount implements a turn-and-lock system to secure the disposer to the sink.
- Baffle: This rubber guard is installed at the sink opening and keeps food and water from splashing out of the grind chamber.
- Multiple Grind Stages: Basic models include only one grind stage, while other versions have as many as three separate stages to completely pulverize food so it washes down the drain easily.
- Quiet Models: Some disposals incorporate design elements, such as insulation around the disposer, sound baffles at the sink opening and flexible mounting connections, to reduce excess vibration and noise.
Garbage Disposal Use and Maintenance
- Run cold water down the disposal while it's operating.
- Run the disposal often, and run water after use for a few seconds to rinse internal components. Acid from dried food particles and detergents can corrode the grinding mechanism of your disposal.
- Never pour grease or fat into your disposal.
- Cleanse and rid your disposal of odors that come from stuck-on foods by using your disposal regularly, grinding ice or citrus peels, or use a commercial disposal cleaner. Check the manufacturer’s recommendations to determine which types of cleaning products are safe to use with your disposal.
Garbage disposals vary by model. Consult the manufacturer’s instructions and warranty for information on installation, usage and safety.
Let's Get Started
A garbage disposal is a convenient upgrade, but it's important that it's installed correctly. First, you'll need to check the electrical access and under-sink space. Most disposals attach to the sink, connecting to your drain and power supply. If you have some DIY experience, installing a replacement is fairly straightforward. If it's a new installation, we recommend hiring an electrician.
If you're ready to purchase your new disposal, shop online or visit your local Lowe's store.
Installation Help
Learn how to install a garbage disposal.
If you prefer that a professional installs the disposal, we can help.