I had an issue with one of the smart fans that I bought on Amazon just over two years ago. I ordered a new wiring harness from SmaFan and replaced it, but still nothing. So, I reached out to SmaFan support and Hugo responded immediately and told me that he would get this problem resolved one way or another. I told him my issue and he sent me a new circuit board that I received within a couple of days. I switched out the board and now my fan is working perfectly. Hugo and the support staff at SmaFan kept in touch with me daily until the issue was solved. Great customer service and they have made me a lifetime customer. Thanks for everything.