Ventilation Hood Has Poor Airflow


  • Hood does not pull or draw enough air
  • Blower motor not working as expected or as well as expected
  • Hood does not draw air or has poor air flow

Steps to Verify Issue:

Many factors could contribute to poor ventilation performance. If any of the following do not comply with Wolf guidelines, a qualified HVAC professional may need to review the ventilation installation.

  1. Verify the equivalent duct run is not greater than 40' for downdrafts or 50' for all other ventilation hoods.
  2. A second damper installed in the ventilation ductwork could contribute to a vacuum within the ductwork, causing performance issues.
  3. A make-up air damper may be needed, as a lack of make-up air contributes to a vacuum within the ductwork, causing performance issues. Refer to Make-Up Air Damper for more information.
  4. See also, Ventilation Hood Blower Does Not Operate.

Refer to the Blower Motor Compatibility Chart for more information.


If a functional problem with the hood or blower exists, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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