Turn off power and water before you touch anything
The first and most important step is cutting power to the disposal. Flip the breaker switch that controls the outlet under your sink — if you are not sure which one, turn off the main breaker to be safe. Do not rely on the wall switch alone; a breaker is the only way to may provide the motor cannot start while your hands are near the blades.
Next, turn off the water supply to the sink. Look under the sink for the shut-off valves on the hot and cold water lines and turn them clockwise until they stop. If you cannot find them or they do not turn, you can shut off water to the whole house at the main valve, usually near the water meter or where the line enters your home.
Key Takeaways
- Always kill power at the breaker and shut off water before starting — never trust the wall switch alone.
- You will need a bucket, adjustable wrench, screwdriver, and plumber's putty or caulk to remove and replace the mounting hardware.
- The disposal is held in place by a mounting ring that twists counterclockwise; you may need to support the unit from below while loosening it.
- Disconnect the drain pipe and electrical connection last, after the disposal is free from the sink.
- If the mounting ring is stuck, explore penetrating oil and wait 15 minutes rather than forcing it, which can crack the sink.
Disconnect the drain pipe and electrical cord
Place a bucket under the drain pipe to catch any water still in the line. Loosen the slip nut (the large nut where the disposal's outlet connects to the drain pipe) by turning it counterclockwise with an adjustable wrench. Once it is loose enough, unscrew it by hand and slide the pipe away from the disposal.
If your disposal is hardwired to the electrical panel instead of plugged into an outlet, you will need to disconnect the wires inside the junction box on top of the unit. Turn the cover counterclockwise to open it, then loosen the wire connectors (usually small brass screws) and gently pull the wires apart. If you are not comfortable working with electrical connections, call a licensed electrician to do this step.
Support the disposal and loosen the mounting ring
The disposal hangs from a mounting ring bolted to the sink drain opening. You will need to support the unit from below so it does not fall and crack the sink or your hands. Use a jack, a block of wood, or even a helper holding it steady while you work on the ring above.
Look under the sink at the mounting ring — it has three or four tabs with bolts. Turn these bolts counterclockwise with a wrench to loosen them. As you loosen each bolt, the disposal will drop slightly; keep your support in place and lower it evenly. If the ring is stuck, spray it with penetrating oil (like WD-40), wait 15 minutes, and try again rather than forcing it.
Twist the disposal free from the sink
Once the mounting bolts are loose, the disposal can be twisted out of the mounting ring. Grip the disposal firmly and rotate it counterclockwise — it will unscrew from the ring like a jar lid. You may need to wiggle it slightly as you turn. Once it is free, lower it carefully into your bucket or have a helper support it while you guide it out from under the sink.
The mounting ring will stay attached to the sink. You can leave it in place if you plan to install a new disposal, or remove it if you want the sink drain bare. To remove the ring, unscrew the bolts completely and pry it up gently with a screwdriver.
Clean the sink opening and remove old putty
With the disposal out, you will see the sink opening and the mounting ring (if still attached). Scrape away any old plumber's putty or caulk around the ring with a putty knife or screwdriver. Wipe the area clean with a damp cloth and let it dry completely.
If you are installing a new disposal, the mounting ring will need fresh putty underneath to seal it. If you are leaving the sink without a disposal, you can install a straightforward drain strainer basket or leave the opening as is — many people prefer a clean, open drain for easier cleaning.
When to call a plumber
Call a licensed plumber if the mounting ring is cracked or damaged and cannot be removed without breaking the sink, if you are uncomfortable disconnecting hardwired electrical connections, or if the drain pipe is corroded and breaks when you loosen it. A plumber can also help if you want to replace the disposal with a new one and need the mounting ring reinstalled properly with a watertight seal.
If you are removing the disposal because it is jammed or leaking, a plumber can also inspect the drain line for clogs or damage that might affect a replacement unit.
Frequently Asked Questions
Can I remove a garbage disposal myself if I have never done plumbing work?
Yes. Removal is simpler than installation because you are only disconnecting things, not sealing new connections. The main risk is the disposal falling and injuring your hands or damaging the sink, so use a support and work slowly. If you are uncomfortable with any step, stop and call a plumber.
What if water leaks from the drain pipe after I disconnect it?
That is normal — there is always some water trapped in the line. Place your bucket under the connection before you loosen it, and have a cloth ready to wipe up spills. If water continues to drip after a few minutes, the shut-off valve may not be fully closed; tighten it or shut off the main water supply.
Do I need to remove the mounting ring, or can I leave it under the sink?
You can leave it. Many people do, because removing it requires more work and the ring does not hurt anything. If you plan to install a new disposal, leaving the ring in place actually saves time. Remove it only if you want a completely bare sink drain or if it is damaged.
What should I do with the old disposal?
Contact your local waste management or recycling center to learn about they accept appliances. Many areas have special collection days for large items. Some scrap metal dealers will take disposals for the copper and steel inside. Do not put it in the regular trash.
Is it safe to remove a disposal that is plugged into an outlet?
Yes, as long as you flip the breaker first. Unplugging it is not enough — the outlet is still live and dangerous. Always kill power at the breaker, then unplug the cord if you want to. This is the safest approach.