We have two for 3 years. Too bad the plumber didn't know how to install the seat properly, however their service dept. at Icera is superb. The Technician said that I could do it! I laughed, but he was correct. I found a Philips Screw Driver, and in five minutes, the seat was properly installed by me, not my husband! We have never had a service call, or any issues. One of the best toilets we have ever owned, and now I know how to easily remove the seat if I ever wanted to really clean the porcelain well. Easy as pie! I highly recommend the Icera. PS! Nice styling also!