How to descale a Bosch dishwasher

Step-by-step

1. 1

   Empty the dishwasher completely

   Remove all dishes, racks, and utensils. Ensure the interior is completely clear.

2. 2

   Pour descaling solution into dispenser

   Use 250ml of white vinegar or commercial dishwasher descaler into the main wash dispenser. Close the dispenser door firmly.

   💡 White vinegar is cost-effective for hard water areas; use it every other cycle.

3. 3

   Run the hottest cycle available

   Select the longest, hottest wash programme (usually 70°C or higher). Do not add any detergent.

   💡 Avoid quick wash cycles—they don't generate enough heat for effective descaling.

4. 4

   Wait for cycle to complete

   Let the dishwasher run through the entire programme without interruption. This typically takes 2-3 hours.

5. 5

   Inspect spray arms and filter

   Check the spray arm nozzles and filter basket for remaining limescale deposits. Use a toothpick to clear blocked nozzles if needed.

   💡 Clear nozzles improve water distribution and cleaning performance.

6. 6

   Run a rinse cycle with water only

   Run one more hot wash cycle with no detergent or descaler to flush away residue completely.

Parts you may need

FAQs