By Holly Honeycutt
Updated March 3, 2026
Garbage disposal installation is a relatively easy project for an experienced DIYer. Grab a few basic tools and follow these steps to learn how to replace a garbage disposal.
Note: Product costs, availability and item numbers may vary online or by market.
Whether you're doing a garbage disposal replacement or installing one for the first time, it'll attach to the sink and have a discharge that attaches to the drainpipe. Your dishwasher outlet hose attaches to the disposal.
Garbage disposals are typically available in 1/3 horsepower up to 1 horsepower. If you have a septic system, you'll need to purchase a septic-safe disposal.
