Energy Manager

ASHRAE releases expanded version of Standard 90.1

October 25, 2019  By  Megan Hoegler

ATLANTA, Ga.— ASHRAE has released an expanded, revised version of Standard 90.1. ANSI/ASHRAE/IES Standard 90.1-2019, Energy Efficiency Standard for Buildings Except Low-rise Residential Buildings.

The new version contains over 100 changes from the 2016 version, including energy-saving measures.

“The goal of the 2019 version of 90.1 was to provide clearer guidance for exceeding efficiency goals,” said Drake Erbe, chair of the Standard 90.1 committee, in a release. “This new version focuses on energy-saving measures which we hope will reward designs for achieving energy cost levels above the standard minimum and result in more efficient buildings and more innovative solutions.”

The revised standard also includes significant changes to administration and enforcement, building envelope, lighting and mechanical, energy cost budget methods, performance rating method and clearer, more specific rules surrounding performance rating method.


Also new to the standard is the use of fan energy index (FEI) as the metric for efficiency provisions for commercial and industrial fans and blowers.

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