Vent Hood & Over-the-Range Microwave - CFM Rating and Sones

As of February 2020, we use a third party (AHAM) to certify hoods for CFMs and Sones. The California Energy Commision approved AHAM's rating program as equivalent to HVI's Certification rating program. In effect, both the AHAM listing and HVI listing meet Title 24 requirements. Therefore, GE Appliances now uses AHAM to comply with California's Title 24 requirements. Both these programs were created to provide a fair and credible method of comparing ventilation performance of similar products. For more information, visit: https://www.hvi.org/ and https://www.aham.org/AHAM.

Determining the CFM and Sones Rating for a Vent Hood or Over-the-Range Microwave

For CFM and Sones listings in AHAM, visit: AHAM-Certified Products Directory

Prior to February 2020, we published CFM and Sones ratings based on HVI's testing, therefore, hoods tested by HVI do not have all speeds listed as a published rating. If a speed rating is not listed by HVI , we do not have a CFM or Sones rating to provide.

For CFM and Sones listings in HVI, visit: HVI Certified Products Directory

For recirculating hoods, note:

• Advantium ovens, and most over-the-range microwaves are not tested and rated.
• Only products vented to the outside have CFM ratings. Non-vented hoods do not have CFM ratings.

Meanings of Ratings Abbreviations

AHAM/HVI usually lists just the low speed and working speed. 

• LS = Low Speed
• MS = Medium Speed
• WS = Working Speed (The lowest speed at which you get at least 100 CFMs)
• HS = High Speed
• BS = Boost Speed

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