Log in or register to create Field Kits and Sales Worksheets. Why register?

7.4 System fan rated ≤ 3 sones if intermittent and ≤ 1 sone if continuous, or exempted

The following Solution Center guides provide specific guidance about ratings for intermittent and continuous fans:

Guide describing how to choose ENERGY STAR fans.

Guide describing how to select low-sone supply and exhaust fans for quiet, continuous operation.