Bosch GSN33VW31Z - 225L Upright FreezerSerie 4 Freestanding Freezer NoFrost: Defrosting a fridge by hand can be very annoying and time consuming. Thanks to our new fridges with NoFrost, you can easily remove this task from your to do list for good. Unlike in conventional fridges, the air humidity in a NoFrost fridge is permanently collected in a central chiller unit, which automatically defrosts on a frequent basis. The resulting condensation is simply channelled outside out of the fridge,