We had an issue with the upper level maintaining it's temperature. Reached out to customer service who promptly sent a new part. This did not solve the issue so we got back in touch with Gabby from customer service who immediately told us how to go about getting the unit replaced which we are in process of. Love the beautiful beech wood shelves, plenty of space for my collection, and the blue light is pretty at night! I have had lots of compliments from family and friends who now want one!