Summary: Super Quiet! This model replaced a15 year old 1/2hp that was installed by the builder. It is quite heavy, though, and, if you are an older person, like my husband and I, you might need a younger, stronger person to help you with installation. We are very happy with this purchase.
Summary: Like other reviewers have noted, this is a very quiet unit... is sounds like it's not even working when in fact it is working very well and quietly. The operation is smooth. It appears so far to have a quiet, powerful motor. So far, so good.
Excerpt: Quick, efficient, and quiet too! I think the water running down the sink makes more noise than this disposer. Install a little clumsy mostly due to awkward angles underneath sink and weight of unit. Once in, no problem.