This unit has a 24 hour delay feature but I never need to use it because it's so quiet. I can run it right after dinner and not hear a thing except the "ding" when it's finished. That was the main selling point for me, beside the Bosch name, but the other feature I absolutely love is the spacing of the dishes. I can fit 8 dinner plates, salad plates and bowels on the bottom rack, all the glasses on the top rack as well as serving dishes, run it on Eco and they all come out spotless and dry. I love it!!