It is the most quiet one we have ever had. Works great. It was easy to replace the old one. All the mounting hardware was the same as the old one. Just snapped into place. I did not like the intake boot being all rubber as our old one was solid. But it made it a little easier to install. It is a septic style and we are on a sewer system. I had trouble was the chemical bottle install. I called and they recommended a service company in our area. They said it was covered under warranty but we don't really need it. So I let it go. Over all we are vary happy with our new unit. Thank you Uncle Clinton.