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Posted 11/22/2023 in DIY

Garbage Disposal Replacement

Garbage Disposal Replacement

DIY Guide for Garbage Disposal Replacement:

Materials and Tools Needed:

  • New garbage disposal unit
  • Plumber's putty or rubber gasket (depending on the model)
  • Wrench (usually an adjustable wrench)
  • Screwdriver (Phillips and flathead)
  • Bucket or towels (for potential water spillage)
  • Electrical tape or wire connectors
  • Safety goggles and gloves


  1. Turn Off Power and Water: First, switch off the power to the disposal unit at the circuit breaker. Then, disconnect the disposal from the power supply. Shut off the water supply to the unit.

  2. Disconnect Old Disposal: Remove the drain arm and dishwasher hose connected to the disposal. Loosen the mounting ring that holds the disposal to the sink and twist the unit off.

  3. Remove Old Unit: Carefully detach the disposal unit from the mounting assembly. Be ready to catch any water that might spill out.

  4. Install New Disposal: Follow the manufacturer's instructions for installing the new disposal. Generally, you'll need to attach the mounting assembly to the sink and then connect the disposal unit onto it.

  5. Connect Plumbing: Reattach the drain arm and dishwasher hose to the new disposal. Ensure everything is tightly sealed.

  6. Electrical Connection: Connect the electrical wires following the disposal unit's instructions. Use wire connectors or electrical tape to secure the connections.

  7. Test: Before fully securing the disposal, turn the power and water back on. Run some water and test the new unit to check for leaks or any unusual noises.

  8. Secure the Disposal: Once everything is working fine, secure the disposal unit to the mounting assembly using the provided hardware. Ensure it's tightly in place.

  9. Final Checks: Check for leaks again and tighten connections if necessary. Clean up any excess plumber's putty or debris.

  10. Dispose of Old Unit: Safely discard the old disposal unit following local regulations.

Remember, if you're unsure about any step or feel uncomfortable with the process, it's best to contact a professional plumber to ensure proper installation and safety.

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