ASHRAE 120-2022
Method of Testing to Determine Flow Resistance of HVAC Ducts and Fittings
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About This Item
ASHRAE 120-2022 is a technical standard for measuring the flow resistance of HVAC ducts and fittings, giving engineers and testing teams a consistent method to evaluate pressure-loss behavior. This matters when selecting, sizing, or comparing ductwork components, because flow resistance can affect system performance, fan energy use, and overall HVAC design quality. For buyers reviewing engineering references, ASHRAE 120-2022 supports more reliable test planning, specification review, and performance documentation. It is especially relevant for professionals who need a recognized testing basis for duct systems and fittings in building and facility work.
Overview of ASHRAE 120-2022
ASHRAE 120-2022 provides a recognized technical benchmark for determining the flow resistance of HVAC ducts and fittings. As an ASHRAE standard, it is intended to support consistent testing and comparable results across engineering and laboratory settings. The document is useful where duct pressure drop, airflow behavior, and component resistance need to be understood in a structured way. For teams working on HVAC design or verification, this standard can serve as a dependable reference for test methods and technical documentation tied to duct system performance.
How ASHRAE 120-2022 is used
ASHRAE 120-2022 is commonly used by HVAC engineers, test laboratories, commissioning teams, and QA/QC personnel involved in ductwork evaluation. It may support laboratory testing, product comparison, specification development, and technical review for ducts and fittings used in commercial building systems. Facility managers, consultants, and procurement teams may also rely on it when validating performance data or reviewing submittals for HVAC projects. In practice, it helps create a clearer basis for assessing airflow resistance in design, retrofit, and equipment-selection workflows.
Why teams rely on ASHRAE 120-2022
Teams rely on ASHRAE 120-2022 because a consistent test method improves confidence in performance data and reduces ambiguity in engineering decisions. When duct and fitting resistance is measured in a standardized way, it is easier to compare products, support system design, and document results for project records or compliance-related review. This is valuable for professionals managing airflow performance, fan selection, and system efficiency, especially where accurate technical reference material helps reduce rework and improve coordination across design, testing, and operations teams.
- HVAC duct and fitting flow resistance testing
- Standardized pressure-loss evaluation
- Engineering and laboratory reference use
- Specification and submittal review support
- Commissioning, QA/QC, and performance verification
- Publication Date: 2022
- Publisher: ASHRAE
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