Can I replace a garbage disposal myself?

Yes, you can replace a garbage disposal yourself if you are reasonably handy and comfortable working under a sink with basic plumbing and electrical connections, and many homeowners do it as a DIY project that takes 1 to 2 hours. The job is easiest if you are replacing an existing InSinkErator with a new InSinkErator because they use the same Quick Lock mounting system. In that case you can often leave the existing sink flange and mounting assembly in place, simply twist off the old unit, disconnect the dishwasher drain hose and the discharge tube, unplug or disconnect the electrical, and twist on the new unit. You will need basic tools like a screwdriver, pliers, plumber's putty if you replace the flange, a bucket to catch water, and the jam-buster wrench. You must turn off power at the breaker before touching any wires. If your disposal is hardwired, you need to connect wire nuts matching colors. If it is plug-in, you simply unplug and replug. Plumbing involves reconnecting the drain tube with a gasket. The most difficult parts are working in a cramped, dark cabinet, supporting the heavy disposal while aligning the mount, and removing a corroded old flange. If you are not comfortable with electrical work, have no experience with plumbing, or local codes require a licensed plumber, hiring a professional is safer and typically costs 150 to 400 dollars in labor.