HH Homeowner's Handbook
Home / Plumbing / Replace a garbage disposal
TASK NO. 021 Upgrade

Replace a garbage disposal

Plumbing
Trigger
Motor failure or leak
Who does it
DIY
Est. time
1-2 hrs
Est. cost
$100-250
Difficulty
●●●○○
Step by step
  1. Turn off power at the breaker and unplug/disconnect the unit.

  2. Support the disposal, twist the mounting ring to release it, and disconnect drain/dishwasher lines.

  3. Attach the new disposal's mounting assembly to the sink flange.

  4. Reconnect the drain trap and dishwasher inlet (knock out the plug if new).

  5. Restore power and run water while testing the unit.

Video guide
Garbage Disposal Installation (VIDEO) - This Old House
Watch this guide
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