After I received my dehydrator I wondered about BPA. I called Nesco and Customer service told me that the trays, the fruit roll up trays and the inserts are all BPA free but the top part with the motor is not. As the top does not come in contact with food, I think we are good.I am drying 5 trays of almonds. I soaked them first overnight as per the recipe-then drained them and begin drying them. The small recipe book that comes with the unit said it would be 24 hours.I begin drying them at 500pm on Saturday evening. It is now Monday morning and they are still not crispy. ( I am using the low 95-100 recommended heat setting so as not to destroy the enzymes.) The CR representative told me that it can take between 24-48 hours, so I will see if they are done this evening. I will try to update as I try more items.