Product review (4 stars): Initial problem with unit that was quickly resolved
When I first received the unit, the display would start beeping and flashing on its own.  I contacted Golden Vantage via Amazon and they sent a circuit board within a few days which I replaced myself.  Replacing the board involved removing some Phillips screws and cover to get to the board, unplugging about 8 leads from the old board and plugging into the replacement board and putting the cover back on.  Other than the faulty circuit board, the rest of the unit seems well made.  It now works well and is quiet in my opinion considering its fan speed.  If not for the defective circuit board, I would have rated the unit a 5.

No warranty information can with the fan.  I called Golden Vantage and couldn't get through to anyone.  I then emailed them about the length of the warranty and didn't hear anything back.  Then a couple of weeks later, I emailed them through Amazon and within a couple of days they sent an email with a pdf attachment of the 3 year warranty.  Golden Vantage seems to respond faster when emailed via Amazon.