Overall we love our microwave. For some reason our specific unit makes a high pitched noise when cooking about 10% of the time. It hurts our ears it is so loud. GE send out a tech for free to diagnose and could not figure out the problem. They reset the unit on the wall after taking down but still we have this loud noise which is super annoying and I imagine specific to just our unit. It is not technically defective since it cooks great but it sure is super annoying and bothers us that likely we will have to throw this one out if the noise won't stop.