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Buy the Standard!

The BACnet Standard, or ANSI/ASHRAE 135, defines the BACnet Protocol. The corresponding International Organization for Standardization (ISO) designation is ISO 16484-5. The Standard, with its errata or amendments, can be purchased, downloaded, and ordered either on the ASHRAE or ISO websites.

ASHRAE Bookstore:

For future versions or updates, please search for “BACnet 135” in the ASHRAE Bookstore search/help box.

ASHRAE 135 – The BACnet Standard

ASHRAE 135.1 – The BACnet Companion Standard (Method of Test for Conformance to BACnet)

To contact the ASHRAE Bookstore directly:

  • E-Mail: orders@ashrae.org
  • Telephone: 1-800-527-4723 (Toll-Free)

ISO Bookstore:

For the BACnet standard, search for “ISO 16484-5” on the ISO Bookstore, or use the following links:

For The BACnet Companion Standard (Method of Test for Conformance to BACnet) search for “ISO 16484-6” or use the following link:

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