NICE EFFICIENT DEHYDRATORWith excellent temperature range 70 to 190, this small unit has a higher heat range than many. It may look small but it can dehydrate 2 lbs of blueberries in one batch. This unit is able to do the same amount of blueberries twice as efficient as the the larger competitive unit,because of its size is less expensive to run (less space to disperse the heat). The fan is very big and provides even airflow across all the food on the trays so there’s no need to change trays around.