I use it for 48 hours to intensively to dry ton of chanterelles found :) this weekend. At first I failed re-ship the product back because I thought to malfunction: the fan did not seem to work (some air, no noise). Actually though, it's normal operation. And withers me a mushroom cash in 5 hours. Interesting also the adjustable height floors. Too easy to clean! Small problem: no timer. If this equipment is still as nice as and extent of its use: it is the top.