The GE CDWT980VSS Caf Series 24" Stainless Steel Built-In Dishwasher has a 5-stage filter with a Piranha™ hard food disposer. A middle wash arm with powerful spray jets is focused specifically on silverware to providing a thorough cleaning of all utensils. These jets are an important part of the PureClean wash system with 5-stage filtration. The DeepClean cycle helps to remove difficult soils like eggs, oatmeal and rice throughout the dishwasher and uses a Steam Prewash option. Heres how the Steam Prewash works: After the second prewash fill, the dishwasher stops the water circulation and activates the calrod heater. Water dripping from the glassware and dishware falls onto the calrod heater and creates a wall of steam that helps to loosen soils before the main wash. A heating element heats the air inside while a hidden fan circulates the warm air to help dry dishes. Nearly silent two-pump system cleans dirty dishes without disruption.