How to Clean a Nespresso Aeroccino 4 Milk Frother

Step-by-step instructions

Step 1: Remove the jug and identify the model

Stop the frother, lift the jug off the base and allow hot surfaces to become safe to handle. Unplug the base before wiping it. Empty unused milk rather than repeatedly heating it as a cleaning substitute. Check the model marking underneath against Nespresso's Aeroccino 4 assistance page. The number matters: a dishwasher claim for this model cannot automatically be transferred to another Aeroccino. Set the base outside the washing area.

Step 2: Separate the lid seal, whisk and spring

Remove the lid, take the seal off the lid and lift out the whisk. Remove the spring from the whisk as shown in the matching instructions. Put the small parts in a visible tray so none disappear into the sink. Observe how the seal sits before removing it; a photo helps with reassembly. Do not dismantle the jug's electrical underside. The user-cleanable separation is intended to expose milk-contact surfaces, not to open the heater or connector housing.

Step 3: Wash the jug's interior while keeping it out of a soak

Use detergent and a soft sponge inside the jug, paying attention to the floor, the whisk seating area and the upper milk line. Rinse with warm water without immersing the jug in the sink. Nespresso specifically excludes abrasive materials from this cleaning route. If milk has dried on, re-wet the residue inside the vessel and gently work it loose; do not scrape with a knife or a metal spoon. A damaged coating is not repaired by polishing the affected spot.

Step 4: Clean the small parts on every side

Wash the lid, seal, whisk and detached spring with detergent, then rinse thoroughly. Check the seal's groove and the spaces in the spring rather than only their outward-facing surfaces. Keep the pieces separated during inspection so trapped film can be seen. For a seal that stays sticky, cracked or misshapen after washing, seek the correct replacement. Installing a deteriorated seal because the rest of the jug is clean can leave the next preparation messy and make it harder to diagnose an overflow.

Step 5: Use the dishwasher only within the matching permission

For the Aeroccino 4 covered by the cited instructions, Nespresso permits all separated parts except the base in a dishwasher at a maximum of 70°C/158°F. Confirm the complete cycle, including its hotter stages, fits that limit. Secure the small parts and leave space for washing water to reach the jug. If you cannot establish the temperature or your revised model's permission, hand washing is a straightforward alternative. Dishwasher-safe does not mean the powered base is included or that caked milk will always disappear.

Step 6: Dry before reassembly and before reconnecting

Nespresso instructs drying the parts with a fresh clean towel, cloth or paper before reassembly. Check the jug's underside connector, not just its interior. Refit the seal evenly and put the whisk and spring back in the configuration required for the next preparation. Wipe the unplugged base without soaking or spraying it and keep liquid away from the connection. Do not place a damp jug onto a live base to speed drying. A dry electrical contact is a readiness check, not an optional finishing touch.

Step 7: Check the next preparation without blaming every fault on dirt

Inspect the empty assembly for a seated whisk and seal before adding fresh milk. Use the correct fill mark for the chosen preparation; frothing and heating have different limits. Nespresso's troubleshooting distinguishes overheating, insufficient milk, a misplaced whisk and wet connectors from ordinary residue. Its regional model guidance also warns against adding syrup, sugar or chocolate powder directly to this jug. Clean after each use, and seek support for persistent faults or damage rather than repeatedly running it empty.