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Garbage disposal installation mostly involves heavy lifting and meticulous drain connections.

Learn how to install a garbage disposal in 10 steps with this guide.

Tighten the Mounting Ring Assembly

Tighten the mounting assembly with the three mounting screws.

Newly installed garbage disposal under sink

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It’s considered good for plumber’s putty to ooze out around the drain opening.

This means that the seal is tight.

But be careful not to overtighten and lose all of the putty.

collage of an InSinkErator garbage disposal we recommend on a blue background

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You likely will feel a distinct click as the disposal locks into place.

A permit will be required.

You do not need a special sink to install a garbage disposal.

Materials and tools to install a garbage disposal

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Garbage disposals can be installed on nearly all standard single- or double-basin sinks.

Drain connections removed from garbage disposal

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Plumber with black gloves removing p-trap pipe

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Drain fitting and mounting ring installed beneath sink

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Mounting ring tightened with screwdriver on bottom of sink

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Garbage disposal power cord wired connected together

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Screwdriver tapped into dishwasher inlet nipple

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Garbage disposal collar mounted to bottom of drain fitting

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Discharge tube screwed into garbage disposal

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Rotating cam collar tightened to lock disposal in place

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Water running down sink to check fro leaks with disposal

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Leaking garbage disposal being removed from under sink