Thermador Excess Condensation / Ventilation Issue

Microwave cavity accumulates condensation or water droplets on walls and door after cooking.

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Possible Causes

Blocked exhaust vents,High moisture content in food,Room humidity and poor airflow,Door gasket not sealing fully

How to Fix / Troubleshooting

Safety first: Allow hot steam to dissipate before wiping the interior.

  • Step 1 – Ventilation check: Ensure that external vents and trim kit openings for the Thermador microwave are not blocked.
  • Step 2 – Wipe interior: After cooking, open the door and wipe down moisture with a soft cloth.
  • Step 3 – Leave door ajar: Leave the door slightly open for a few minutes after use to allow moisture to escape.
  • Step 4 – Inspect door seal: Check the door gasket and mating surfaces for damage or debris that could prevent a proper seal.
  • Step 5 – Adjust cooking methods: Cover high-moisture foods with microwave-safe lids or vented covers to reduce steam.

Note: Some condensation is normal, especially with high-moisture foods, but persistent pooling may indicate poor ventilation.

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Repair Difficulty

Very Easy 1/5
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