We bought 2 toilets in Feb 2022.  May 23, 2023, we had an issue with one.  Called their 800 number, got right in and talked to Anna.  She was quick to also connected the call to Suní. They both diagnosed the issue.  Within 30 min I had a shipping confirmation of the replacement part.  So impressed with the professionalism, and quick resolution.  They have my business for life.