: Specifies commercially available test instruments with higher accuracy than those previously listed in the 2006 standard.
: Clarifies data calculation methods to ensure they apply correctly to the wider variety of air devices currently on the market. What is Standard 70?
: Now includes a broader range of air-device types and sizes, specifically adding displacement ventilation and underfloor outlets. ashrae standard 702006 pdf updated
ASHRAE Standard 70 defines the laboratory methods for testing air outlets and inlets used in ducted and unducted systems. It is the benchmark manufacturers use to generate the performance data found in their product catalogs, such as grilles, registers, and diffusers. The standard provides uniform methods for determining:
: Testing for "throw" (how far air travels) at different terminal velocities. : Now includes a broader range of air-device
: Measuring the noise levels produced by air devices.
The 2023 update introduces several critical improvements over the 70-2006 (RA 2021) version to better align with modern HVAC technology: The standard provides uniform methods for determining: :
: Updates installation procedures and facility definitions to more accurately reflect how devices perform in their intended real-world applications.
