If your cooker hood's fan is running but the extraction performance is poor or cooker hood is not extracting at all, this can impact your cooking experience. Below are common causes and solutions to help you restore effective extraction.

Common Causes and Solutions

Blocked or Dirty Filters

  • Cause: Over time, grease and dirt accumulate in the filters, reducing airflow and extraction efficiency.
  • Solution: Clean metal grease filters regularly with warm soapy water or in the dishwasher. Replace carbon filters every 3-6 months for recirculating hoods. Check how to clean cooker hood filters.

Incorrect Installation

  • Cause: Improper installation, such as long or poorly routed ducting, can restrict airflow.
  • Solution: Ensure ducting is as short and straight as possible, with the correct diameter specified in the user manual.

Blocked or Obstructed Ducting

  • Cause: Debris or blockages in the ducting can prevent proper extraction.
  • Solution: Inspect and clear any obstructions in the ducting. A professional technician may be needed for thorough inspection and repair. You can book a repair online here.

Low Fan Speed Setting

  • Cause: Running the fan at a low setting might not provide enough power for heavy cooking fumes.
  • Solution: Increase the fan speed to match the cooking intensity, especially when frying or boiling heavily.

Inadequate Ventilation

  • Cause: Recirculating cooker hoods rely on good room ventilation, and poor airflow can hinder their performance.
  • Solution: Ensure your kitchen is well-ventilated by opening windows or using an additional extractor fan if needed.

Faulty Fan or Motor

  • Cause: A malfunctioning motor or fan can result in poor extraction.
  • Solution: Contact us and book a repair to inspect and repair or replace faulty components.

Improper Maintenance

  • Cause: Lack of regular maintenance can lead to reduced performance over time.
  • Solution: Follow the cleaning and maintenance schedule outlined in your cooker hood’s user manual to ensure optimal performance.

If the issue persists despite following the guidance above, please contact Bosch Customer Service for further support or you can book a repair.

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