Uncertainty in heating ventilation and air condition equipment sound

Uncertainty in heating ventilation and air condition equipment sound is formally defined in each test standard. Results from an industry sponsored round robin study have been disseminated in recent years. However, the uncertainty of a specific measurement is only part of the story. Manufacturers predict sound levels of more product variations than they will ever build, let alone measure. This presentation will discuss how one manufacturer deals with uncertainty in sound power data which is intended to be used by customers to design quiet buildings.