I finished my keezer in December. It is a coffin model built from one of the Magic Chef 7.0 models that HD had on sale a couple of months ago. It has been sitting idle in my basement for several weeks now. last weekend, I finally found time to brew a new batch. It fermented out very quickly and today, I put it into the keezer to crash cool before kegging. I use an STC1000 as a controller set at 5.5C. I have the probe in a glass vial filled with vodka inside. I also have a coffin with a 120mm fan. With the HDPET fermenter inside, it is taking 40min between cooling cycles. That is with the coffin fan off. With the fan on, it is about 31min between cycles. The cooling cycles run from 11-12 min. I feel that is pretty damn good. What are you all experiencing?