How to Replace a Garbage Disposer

By Gene and Katie Hamilton

Tools Required
  • Flashlight
  • Screwdrivers
  • Slip-joint pliers
Materials Required
  • Garbage disposer
  • Plumber's putty

Before You Begin

Below are the instruction steps to follow. Don't want to DIY? Click here to Home Advisor, a free referral service that connects homeowners with local contractors.

  • Step 1 : Disconnect power

    Disconnect the power to the disposer by either pulling the fuse or switching off the circuit breaker.

  • Step 2 : Remove the drain fittings

    Remove the drain fittings

    Use a large pair of tongue-and-groove pliers and remove the drain fittings connected to the old disposer.

  • Step 3 : Remove the disposer

    Remove the old disposer

    Support the disposer with one hand, and lift it slightly. Insert a screwdriver (or the tool provided with the disposer) into the lugs on the side of the mounting assembly and push to the left to loosen the disposer.

  • Step 4 : Remove the electrical cover plate

    Remove the electrical cover plate

    Using a screwdriver, remove the screws holding the disposer's electrical cover plate to the disposer body. The wires inside the electrical box will most likely be connected with twist-on wire nuts. Loosen all the wires and separate them, then loosen the clamp that holds the cable leading into the box. Pull the cable out of the electrical box.

  • Step 5 : Remove the old mounting ring and sink flange

    Use a screwdriver to pry off the snap ring holding the old mounting ring assembly to the sink flange. Then remove the sink flange.

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