Method of Testing HVAC Air Ducts ASHRAE

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The American National Standards Institute – Method of Testing HVAC Air Ducts ASHRAE (2016). This standard shall be used to determine the structural strength, dimensional stability, durability, and leakage characteristics of HVAC air ducts. A standardized set of comprehensive tests is used to ensure that products meet minimum structural requirements and to allow products to be compared to one another. Such tests should simulate structural stresses that the duct will experience in service and facilitate the application of safety factors. These tests include pressurizing the ductwork, applying superimposed loads, dropping weighted implements for impact or puncture, applying tension to the duct, bending the flexible duct 180 degrees, subjecting the ductwork to temperature and humidity changes, and bursting or collapsing the ductwork under pressure. After an individual test or a series of tests, leakage tests may be conducted to determine the effect of a structural or durability test on a specimen. During a test or series of tests, the ductwork is observed to determine if there is degradation and permanent damage.

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