Sone 523 Updated Now

Reality: Many local codes incorporate the International Mechanical Code (IMC) , which now references the updated acoustic standards. If you are doing a renovation, the inspector may require updated sone test reports.

Specifying quiet mechanical systems just got harder. You cannot rely on old spec sheets. When a client demands "maximum 1.5 sones for a master bath," you must ensure the product you select has been tested under the method. Using legacy data could lead to a callback when the homeowner complains about a noise level that is technically compliant but perceptually louder. sone 523 updated