If your cooker hood isn’t performing as expected, there are a few common reasons that could be affecting its efficiency. Here’s how to identify and resolve them.

Filter Build-Up

  • What to check: Grease and dirt naturally accumulate in filters over time, especially with frequent cooking.
  • What to do:
    • Clean metal grease filters regularly with warm soapy water or in the dishwasher (if applicable).
    • Replace carbon filters every 3 - 6 months in recirculating models. Find out how to clean or replace your filters here.

Installation Issues

  • What to check: Ducting that is too long, narrow, or poorly routed can reduce airflow and overall performance.
  • What to do: Ensure ducting follows the guidelines in your user manual - as short and straight as possible, with the correct diameter for your model.

Blocked Ducting

  • What to check: Obstructions such as debris, nesting, or damaged ductwork can block airflow.
  • What to do: Check for visible blockages. For thorough inspection or repairs, it may be best to speak to book a repair.

Fan Speed Settings

  • What to check: Lower fan speeds may be insufficient for intensive cooking tasks.
  • What to do: Use higher fan settings during heavy cooking (e.g. frying or boiling) to improve extraction.

Room Ventilation

  • What to check: Recirculating hoods rely on airflow within the room.
  • What to do: Improve overall ventilation by opening a window or ensuring there is adequate air circulation in the kitchen.

Mechanical Fault

  • What to check: A faulty motor or internal component could be affecting performance.
  • What to do: If you’ve tried the above steps and the issue persists, it may be a mechanical fault. Contact NEFF Customer Service to arrange a repair.

General Maintenance

  • What to check: Infrequent cleaning or missed maintenance tasks can lead to gradual performance loss.
  • What to do: Refer to your user manual for the recommended maintenance schedule and care guidelines to keep your hood working at its best.