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Zeolith® Drying: 2x better drying results on plastic.

A new standard in drying performance

The patented Zeolith® drying system uses a mineral to absorb moisture and convert it into warm, dry air. This heated airflow is distributed evenly throughout the interior, enabling optimised moisture removal after every cycle. The engineered process delivers up to two times more effective drying on plastic items*, reducing the need for hand-drying. Every item, from delicate glassware to plastic containers, is ready for storage.

The technology behind Zeolith® Drying

Harnessing the properties of Zeolith®
A man holding two handfuls of zeolite crystals with a Siemens dishwasher in the background.
The power of the Zeolith® mineralZeolith® Drying uses a mineral to absorb moisture and convert it into heat, supporting highly effective drying performance. This maintenance-free system is engineered to perform throughout the lifetime of the appliance.View our Zeolith® dishwashers
A sleek Siemens dishwasher is open, revealing dishes and glasses inside, against a modern kitchen backdrop with a marble wall.
Self-regenerating Zeolith® systemDuring the drying phase, a fan directs moist air into a chamber containing the Zeolith® mineral, where moisture is absorbed and converted into heat. At the start of the next wash cycle, the Zeolith® mineral is heated to release the absorbed moisture, regenerating it for the next cycle.

Three cutting-edge drying technologies

Three drying technologies, each engineered to meet different drying requirements
Open Siemens dishwasher with a blue glowing icon indicating a drying or heating function above the door.
Good: Heat exchangerThese dishwashers use a heat exchanger and pump to reuse residual heat generated during the wash cycle, supporting effective drying performance.
Open dishwasher with plates inside and a glowing icon indicating a heated drying feature emitting steam.
Better: openDoorThe appliance door opens automatically after the drying phase to release moist air, helping to reduce water spots on crockery.
Diagram showing moisture entering and heat escaping from a block inside a dishwasher's interior.
Best: Zeolith® dryingConverts residual moisture into heat, supporting effective drying performance.

Designed for gentle glassware cleaning

Spotless drying, glassware protection, and flexible loading - features engineered for the complete care of your most delicate glassware.
Close up of a spotlessly clean wine glass inside a Siemens dishwasher.
Ultimate glass protectionThe adjustable top rack features glass clip holders and anti-vibration mats. These components secure fragile glassware during the wash cycle, helping to reduce movement caused by vibrations.
Illustrated icon of a dishwasher filled with plates and bowls and the top rack angled slightly.
Gentle but thorough cleaning The glassZone includes six integrated nozzles that deliver a targeted water flow to clean effectively while helping to protect delicate glassware from high water pressure.

rackMatic adapts to every load

The system provides flexible loading by allowing the upper rack to be adjusted across nine positions. A locking mechanism ensures the rack remains stable at each height, creating space for larger or delicate items.
Illustrated icon of a full dishwasher with a large pot at the bottom and an arrow pointing up.
High upper rackPlace the upper rack in a high position to make room for large pots and other bulky items below.
Illustrated icon of a full dishwasher with large plates at the top and an arrow pointing down.
Low upper rackThe upper rack can be lowered to provide additional space for plates, bowls and other crockery on both levels.

How to adjust the upper rack

The upper rack can be adjusted using levers on either side and repositioned across nine levels. Releasing the levers activates the locking system, ensuring stability at each height.

View dishwashers with rackMatic (opens in a new window)
Built-in Siemens dishwasher with open upper rack holding plates and wine glasses under blue light.
Two hands holding the top rack of a Siemens dishwasher, loaded with clean dishes.
A hand removing a clean wine glass from the top rack of a Siemens dishwasher.
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*Drying results of a Siemens dishwasher with Zeolith Drying compared to a Siemens Dishwshe without Zeolith Drying, based on standard household plastic dishes, determined in the ECO50 programme using Finish Ultimate Plus.

Exclusive Zeolith® Drying Technology | Siemens Home Appliances