![]() The standard was renamed ASHRAE 90.1 in 2001. This allows it to be updated multiple times in a year. In 1999 the ASHRAE Board of Directors voted to place the standard on continuous maintenance, based on rapid changes in energy technology and energy prices. ![]() There have been multiple editions to it since. The original standard, ASHRAE 90, was published in 1975. ![]() ANSI/ASHRAE/IES Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings is an published by and jointly sponsored by the that provides minimum requirements for energy efficient designs for buildings except for low-rise residential buildings (i.e., less than four storeys high, and ). ![]()
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