Tyentusa.com has been a better then expected experience! We bought a used Tyent System and when we had an issue recently (3 years later) we contacted them, had to send it in ... we paid the shipping to send it ... they fixed it and shipped it back. When I wrongly put my Tyent2go in the dishwasher and it came out distorted in shape and wouldn't stand, they sent me a replacement. When a friend ordered a Tyent Ionizer they sent me replacement filters for my unit. I love my Tyent ... and I love Tyentusa.com.