ASHRAE Standard 70-2006 , titled "Method of Testing the Performance of Air Outlets and Air Inlets," was originally published to provide uniform laboratory methods for testing and rating air distribution equipment. While this version is still widely cited, it has been superseded by a major update released in Accuris Standards Store Current Status and Updates As of 2026, ASHRAE 70-2023
is the most current and active edition of the standard. The 2006 version underwent several "Reaffirmations" (RA)—meaning it was reviewed and found still valid without changes—in 2011 and 2021 before the 2023 revision was finalized. Latest Active Version: ASHRAE 70-2023 Previous Version: ANSI/ASHRAE 70-2006 (RA 2021). Accuris Standards Store Key Improvements in the 2023 Update The 2023 edition available at the ASHRAE Bookstore
introduced significant technical updates to reflect modern HVAC technology: Accuris Standards Store Expanded Scope:
Now covers a broader range of air-device types and sizes, including modern displacement ventilation and underfloor outlets. Instrument Accuracy:
Specifies the use of newer, commercially available test instruments that offer higher precision than those available in 2006. Revised Procedures:
Redefines test facilities and installation procedures to better align with how these devices are actually used in contemporary buildings. Calculation Methods:
Clarifies data calculation methods to ensure they apply accurately across the new, wider range of covered devices. Accuris Standards Store Overview of Standard 70
Regardless of the version, the standard's primary role remains the definition of laboratory testing methods for determining: www.thenbs.com ASHRAE 70-2023 - Accuris Standards Store
While ASHRAE Standard 70-2006 remains a foundational document for the industry, it was officially superseded by ASHRAE 70-2023 in January 2023. The updated version reflects significant advancements in HVAC technology, particularly regarding displacement ventilation and more accurate measurement instrumentation. The Evolution of Standard 70: From 2006 to 2023 ashrae standard 702006 pdf updated
ASHRAE Standard 70 defines laboratory methods for testing the performance of air outlets and inlets.
Standard 70-2006 (RA 2021): This version was a "Reaffirmed" edition, meaning the original 2006 technical content was reviewed and kept active as an ANSI standard until the full 2023 revision.
Standard 70-2023 (Current): The latest update expands the scope to include modern air-device types and more stringent testing requirements. Key Updates in the 2023 Edition
The transition from the 2006 (RA 2021) version to the 2023 standard introduced several critical changes for HVAC engineers and manufacturers:
New Air-Device Categories: Added specific definitions and test methods for displacement ventilation and underfloor air outlets.
Enhanced Instrumentation: Specifies the use of commercially available test instruments with higher accuracy than those available in 2006.
Rotating Vane Anemometers: A new Normative Appendix F was added specifically for rotating vane anemometer flow measuring systems.
Draft Risk Assessment: Includes a new Informative Appendix E for assessing draft risk in displacement ventilation systems. ASHRAE Standard 70-2006 , titled "Method of Testing
Improved Calculations: Refined calculation methods to better represent how air devices perform in real-world applications. Accessing the Standard
If you are looking for the updated technical specifications, you should reference ASHRAE 70-2023.
Purchase Full Versions: Both the ASHRAE 70-2023 and the legacy Standard 70-2006 (RA 2021) are available for purchase in PDF format through retailers like Accuris and the ANSI Webstore.
Free Previews: Limited read-only versions of select standards are occasionally hosted on the ASHRAE Read-Only Versions page.
Safety & Compliance Warning: Always verify with local building codes which version of Standard 70 is legally mandated in your jurisdiction. While ASHRAE 70-2023 is the most current technical standard, some older local codes may still reference the 2006 or 2011 versions. Read-Only Versions of ASHRAE Standards
The number "2006" in your search refers to the year the standard was published.
Below is a detailed breakdown of the standard, what the "updated" versions look like, and how to access the document legally.
Q1: Can I use ASHRAE Standard 70-2006 for a new project in 2024? A: No. Building codes reference the "latest adopted edition." Using a 2006 standard for a new permit will result in plan rejection. You need the updated version (70-2020). What is ASHRAE Standard 70-2006
Q2: Is there a free PDF of the updated standard from ASHRAE? A: No. ASHRAE is a non-profit but relies on standard sales to fund research. However, you can read the standard for free at a participating ASHRAE Research Library (e.g., Georgia Tech, UIUC, or Texas A&M). No personal download is provided.
Q3: Does OSHA accept the 2006 version? A: OSHA (Occupational Safety and Health Administration) references ASME, not directly ASHRAE 70. However, OSHA’s process safety management (PSM) standard requires using "recognized and generally accepted good engineering practices" (RAGAGEP). In 2024, the 2006 version is no longer considered RAGAGEP. The updated RAGAGEP is 70-2020.
Q4: I bought an "updated" PDF online that says 70-2006 on the cover. Is it legitimate? A: No. An "updated" 2006 standard is a counterfeit. The date signifies a specific edition; it cannot be updated without changing the year. You have likely purchased a scanned draft. Request a refund and report the seller.
Officially titled "Method of Testing the Performance of Air Outlets and Inlets," ASHRAE Standard 70-2006 serves a vital role in the HVAC industry.
Before this standard, testing airflow performance could vary significantly between manufacturers, making it difficult for engineers to compare products "apples-to-apples." Standard 70 establishes a uniform method for testing, rating, and reporting the performance of:
Essentially, if you are selecting a diffuser for a conference room and need to know its throw, drop, and sound power level, the data you are looking at was likely generated using the protocols set in Standard 70.
Let’s address the elephant in the room. If you are searching for an “updated” version of the 2006 document, you are encountering a contradiction in terms.