Something that I read this morning clicked a little earlier regarding the fan, in that wine chillers are designed to slowly cool wine down. So, a lot of air circulation would go against that. I expected a fan with a little air movement to reduce gradients within the internal volume, but perhaps they already characterized the gradients and figure that they're minimal under most circumstances. Immediately upon turning it on, I put two thermostats in the chiller to measure gradients. They were about 2-3 degrees F.