Installing or replacing a garbage disposal is a fairly easy task requiring no special skills. If you are replacing a garbage disposal with a similar model, your task may be a very simple one. You may be able to simply remove the old unit and put in the new one with a minimum of installation steps. If you replace it with a significantly different model or are installing one for the first time, the task may still be easy. Be sure to first check the installation dimensions to make certain it will fit in the available space.